6867results about How to "Short construction period" patented technology

The invention discloses a LNG / L-CNG skid-mounted gas station. The LNG / L-CNG skid-mounted gas station comprises a first sled base, a second sled base, a LNG pump sled, a low-temperature storage tank, aL-CNG pump sled and a gas filling machine; the L-CNG pump sled is arranged on the first sled base; the low-temperature storage tank, the L-CNG pump sled and the gas filling machine are integrated onthe second sled base in sequence; an unloading table is additionally arranged at the end, near the gas filling machine, of the second sled base; the end, near the low-temperature storage tank, of thesecond sled base is movably connected with the first sled base; the low-temperature storage tank discharges liquid by the head and tail ends; fences are arranged on two sides of the first sled base and the second sled base; the first sled base is connected with the end, near the low-temperature storage tank, of the second sled base; top cover plates are arranged at the tops of the fences; and thehorizontal plane of the top cover plates is higher than the horizontal plane of the top of the low-temperature storage tank. The LNG / L-CNG skid-mounted gas station has the following beneficial effects: through high integration degree, the country and industry standards are met, and the functions of an integrated gas station are expanded; and through the mode of discharging the liquid by the head and tail ends of the low-temperature storage tank, the generation of BOG is greatly reduced, and the liquid outlet speed is accelerated.

The invention relates to an atmospheric and vacuum distillation device with a vacuum flash tower and a method thereof. The atmospheric and vacuum distillation device with a vacuum flash tower is characterized in that the vacuum flash tower arranged in front of a vacuum furnace is connected with the vacuum furnace and a vacuum tower through a pump and a pipeline. Constant bottom oil (1) is introduced into the vacuum flash tower (2)at first, and the operation pressure at the top part of the vacuum flash tower is higher than the operation pressure at the top part of the vacuum tower (9) by10 to 200mmHg; Flash cap gas (3) is introduced into the upper part or the lower part of an outlet for a side product which is similar to Flash cap gas fraction; flash bottom oil (5) is introduced into the vacuum furnace (7) through a flash bottom oil pump (6); when the flash bottom oil is heated to 350 to 430 degrees, air-liquid mixing vacuum tower feed material is obtained through partial vaporization and is introduced into a flash evaporation segment (10) of the vacuum tower through a transfer line (8); and products with different fractions are drawn from the side of the vacuum tower and vacuum residue is drawn from the bottom of the vacuum tower. Through adding the vacuum flash tower to improve the working process of the atmospheric and vacuum distillation device, the invention achieves the advantages of increasing treatment capacity, increasing vacuum distillation yield, and reducing energy consumption.

The invention relates to an intelligent traffic control system and method based on a wireless Mesh ad hoc network. The control system comprises n traffic control nodes, m ZigBee area base stations, a mobile communication base station and a traffic control center, wherein the n traffic control nodes are positioned in all intersections, and all kinds of equipment in the n traffic control nodes are connected by an RS-232 / RS-485 bus; adjacent nodes realize a wireless Mesh ad hoc communication network by a ZigBee technology and exchange traffic data in real time; remote connection is carried out between each ZigBee area base station and the traffic control center by adopting GPRS / CDMA (General Packet Radio Service / Code Division Multiple Access) data transmission equipment through the mobile communication base station; and m and n are respectively integers of 1-100 and 2-256. The system organically combines an advanced ZigBee short-distance wireless communication technology and a modern intelligent network technology; and the control method of the invention adopts a self-coordinating intelligent distribution type control algorithm and can realize the optimal traffic signal control effect.

The present invention relates to a building block of ecological slope protection vegetation, a fabrication method and a construction technique. The building block is composed of a growing bed body, a lath crib, planting troughs, a vegetation layer and a plant, the lath crib wraps the circumference of the growing bed body, the upper plane of the growing bed body is lower than the upper plane of the lath crib and concave, the vegetation layer is formed on the growing bed body, which matches the inner walls of the sectional area of the lath crib to form an integral building block, and more than one planting troughs are arranged on and run through the growing bed body. The design of the present invention is scientific, the structure is reasonable, the restoration of water ecology can reduce the operating cost, environment is improved, ecology is reinstated, harmonious natural beauty is enhanced, and the present invention is suitable for the nidification of small living creatures and the habitation and the survival of aquatic fishes, so that the cutting-off continuity of water and land regions is restored. The present invention is widely applied to channel slope protection, levee slopes, roadsides, airports, parks, public lands, household lawns, sports grounds, etc. The present invention is suitable for cold regions, damp regions, warm and damp intermediate zone, etc.

The invention relates to a device for detecting a surface shape of an optical aspheric surface by a sub-aperture stitching interferometer, which comprises an interferometer, a transmission sphere, an adjusting mechanism, a numerical control device and a computer, wherein parallel light emitted by the interferometer is changed into a standard spherical wave through the transmission sphere; the computer controls the action of the adjusting mechanism by the numerical control device to adjust the relative position of the interferometer and an aspheric surface to be detected so that the standard spherical wave is incided to each sub-aperture of the detected optical aspheric surface sequentially and returns to the interferometer; and the computer extracts phase distribution data of each sub-aperture measured by the interferometer for analysis and processing, and the error distribution of the surface shape of a full aperture of the detected optical aspheric surface is obtained by a stitching algorithm. The device broadens horizontal and vertical dynamic range tested by the interferometer, can detect surface shapes of large-aperture concave and convex aspheric surfaces and an off-axis aspheric surface in high resolution and high precision without other auxiliary optical elements, and has low testing cost and short construction period.

The invention discloses a carst region double-arch road tunnel construction method, which comprises the following steps; 1. carrying out construction preparation; 2. carrying out construction at channel openings; 3. adopting a three-pilot-tunnel method for constructing the channel inlet opening section, and adopting a step digging method for digging during the three-pilot-tunnel method construction; 4. adopting a middle-pilot-tunnel method for constructing the middle communication section of the channel, and adopting a full cross section method for digging during the middle-pilot-tunnel method construction; 5. adopting the three-pilot-tunnel method or the middle-pilot-tunnel method for constructing the channel outlet opening section, adopting the step digging method for digging when the middle-pilot-tunnel method is adopted for digging construction of the channel outlet opening section, and synchronously carrying out secondary lining construction from the front part to the back part in the digging construction process of the channel inlet opening section, the middle communication section of the channel and the channel outlet opening section. The invention has the advantages of reasonable design, simple and convenient construction, safe and reliable construction process, flexible construction mode, short construction period and greatly simplified construction steps, and effectively overcomes various defects during the traditional carst region double-arch road tunnel construction.

The invention discloses an automatic vehicle-mounted mobile power charging and exchanging station for an electric vehicle and a method for quickly exchanging a battery. The automatic vehicle-mounted mobile power charging and exchanging station comprises a tractor, a semitrailer and a battery box storage rack, a battery box, an automatic power exchanging device, a charging system, an electric quantity counting system, an automatic control unit and the like which are arranged on the semitrailer, wherein the storage rack can store a plurality of battery boxes three-dimensionally; the battery boxes are standard exchanging modules connected with a battery house on the lower part of a vehicle body by using a plurality of quick-opening locking bolts; the automatic power exchanging device comprises a lifting table, a transmigration machine, a shifting machine and a plurality of unlocking / locking bushings; the automatic power exchanging device can automatically transport and store the battery boxes, and lock or unlock the battery boxes and the battery house due to mutual matching of the lifting table, the unlocking / locking bushings and the quick-opening locking bolts, so automatic dismantling and exchange of the battery boxes can be realized; and the charging system is used for automatically charging the battery boxes. The station is complete in system, compact in structure, flexible in maneuvering, low in investment and short in construction period, so the automatic power charging / exchanging requirement of the battery of the electric vehicle can be met.

The invention discloses a highway operation safety-based mobile monitoring and early warning system and method. The system comprises a data acquisition unit, a data storage unit, a data processing unit, an electronic display screen and a wireless communication module, wherein the data acquisition unit, the data storage unit, the electronic display screen and the wireless communication module are all connected with the data processing unit; the system is arranged on a vehicle; and an accumulator is adopted to provide power. The method specifically comprises the following steps of: constructing a basic database; acquiring dynamic data by the data acquisition unit in real time; comparing real-time road condition parameters with safe road condition parameters by the data processing unit to generate early warning information; and transmitting the real-time road condition parameters and the early warning information to a monitoring center by the wireless communication module. According to the system and the method, the defects of the conventional fixed monitoring system and patrol vehicle can be made up, real-time detection and analysis of the highway road condition parameters are effectively improved, and the highway operation safety level and the emergency management capacity are improved.

The invention belongs to the technical field of river water body pollution control and in particular relates to a multiple-element compound flocculating settling agent and the application of the multiple-element compounded flocculating settling agent in arsenic pollution water body treatment. The multiple-element compounded flocculating settling agent is prepared by compounding malysite, aluminium salt, hypermanganate, polyacrylamide and aqueous solution. The multiple-element compounded flocculating settling agent can be applied in the arsenic pollution water body treatment to remove arsenic in the arsenic pollutant water body. The concentration of the arsenic in the treated water can meet or is superior to the specified requirement of three types of water on the arsenic concentration in the national earth surface water environment quality standard (less than 0.05 mg / L). The invention also can be used for removing heavy metals such as copper, chromium, cadmium, lead and the like in water by sedimentation. The multiple-element compounded flocculating settling agent can be used together with a multiple-element compounded metal oxide arsenic removal setting agent in static or flowing arsenic pollution water body treatment for removing the arsenic in the water body polluted by arsenic.

The invention discloses a bridge structure safe state emergency monitoring and pre-warning method based on a wireless sensor network. The network with a sensor module which is arranged on the two sides or bottom stress point of the bridge or stress bearing parts of beams and columns is used for collecting bridge temperature and humidity, vibration amplitude, stress strain data of the beams and the columns, and data of the frequency and the amplitude of the bridge structure change. The sensor module wirelessly receives and sends with a collection node and a base station node by a wireless communication module, and sends the collected and processed data; the wireless receiving and sending collection node is connected with the base station node, and the base station node is connected with a computer by the network. The wireless sensor network realizes bridge structure safe state emergency monitoring and pre-warning, the sensor system processes, systematically decomposes and transforms the data to obtain the required parameters, and is connected to the computer by the network, and various software and hardware with realizable diagnostic function diagnose the received data.

The invention discloses a high-temperature-resistant, anti-corrosion and thermal-insulation coating which comprises components in parts by weight as follows: 45-60 parts of film-forming resin, 20-30 parts of a pigment and filler, 15-30 parts of an aid and 25-30 parts of a solvent. The invention further designs a preparation technology of the high-temperature-resistant, anti-corrosion and thermal-insulation coating. The technology comprises steps as follows: firstly, mixing the film-forming resin with the pigment and the filler, sequentially adding an antifoaming agent, a leveling agent, a coupling agent, a crosslinking agent and a curing agent, and evenly stirring the mixture at the normal temperature to obtain the high-temperature-resistant, anti-corrosion and thermal-insulation coating. The coating has the advantages of environment-friendliness, low cost, high hardness, long service life, good heat resistance, good flexibility, good high-temperature resistance and the like.

The invention discloses a multipoint synchronous push construction method for a porous large-span continuous steel truss girder, which comprises the following steps of: (1) assembling a steel truss girder assembling platform and a push slideway in a shoreside bridge pier position; (2) assembling a section of steel truss girder and a guide girder on the steel truss girder assembling platform; (3) installing a vertical jack for carrying out support conversion on the steel truss girder and then installing a continuous push jack, a steel strand and an electrohydraulic integrated control system; (4) operating the electrohydraulic integrated control system for carrying out push operation on the steel truss girder; and (5) after the push operation of the section of steel truss girder is finished, continuously assembling the steel truss girder on the steel truss girder assembling platform, carrying out next push operation, repeating the step for circulating operation and finishing the push construction of the porous large-span steel truss girder. The invention has the advantages of short construction period, safe construction, quality guarantee, low cost, and the like, realizes the push operation of the large-span steel truss girder, saves the construction cost, and reduces the pollution to a river channel.

The invention provides a protective method for removing an arch bridge, which belongs to the technology field of bridge removal. The method aims to provide a protective bridge removal method with safety, high efficiency and no pollution. The technical points include: building up a new trestle, erecting a gantry crane, carrying out the bridge removal in a reverse order of the bridge building including bridge decking, coping, column, beam, arch rib and arch support in sequence. The removal stage of the arch rib especially includes removing by adopting methods of top-supporting under the arch, arch box transverse stop and horizontal restraining rope, which better solves the difficult problem of the protective bridge removal with safety, high efficiency and no pollution in a complex construction environment of guaranteeing under-arch navigation, high security level, short construction period and various unpredictable elements, manages to meet the design requirements of the removal safety factor in the protective bridge removal process and the limit control under various removal working conditions and guarantees the removal quality and the construction safety. The removal method has low cost and remarkable social benefit reflected in the direct economic analysis, which is a protective removal method of large-span bridges with safety, high efficiency and practicability.

The invention discloses a construction method of a large-span subway station main body by using an arched cover method and a station main body structure. The construction method comprises the following steps: 1. making first-phase preparations; 2. excavating main body pilot tunnels at the left side and the right side, and carrying out primary support and top beam construction; 3. excavating a middle-part main body pilot tunnel, carrying out primary support and arch buckling construction, and refilling the earthwork; 4. carrying out earthwork excavation on a main body structure in the station, and prestressing force anchor cable construction; 5. carrying out secondary lining construction on the main body structure in the station; and 6. carrying out secondary lining and arch buckling construction on the station main body. The station main body structure comprises the main body structure in the station, a central post, a central plate and a main body arch part, wherein, the main body arch part comprises a middle arch fragment and two side arch fragments respectively arranged in the two side main body pilot tunnels formed by excavation in advance; and the main body arch part comprises a primary support system and a station main body arch buckling secondary lining structure from the outside to the inside. The station main body structure provided by the invention has reasonable design, simple construction steps, convenience in realization, small construction difficulty and rapid construction speed; the subway station formed by the construction method has a stable structure and a good use effect.

The invention belongs to the material field for removing the arsenic in water by settlement, more particularly relates to polyelement composite metal oxide arsenic removal settlement agent and an application method thereof based on iron oxide, manganese oxide, and aluminum oxide. The invention uses an ectopic preparation method or situ preparation method for preparing and obtaining polyelement composite metal oxide arsenic removal settlement agent which comprises hydrated iron oxide, hydroxyl-hydrated ferric hydroxide, hydrated aluminum oxide, hydroxyl-hydrated alumina, hydrated manganese oxide and the like. The polyelement composite metal oxide arsenic removal settlement agent can be used for removing the arsenic pollutants in water bodies such as lakes, reservoirs, rivers, groundwater, drinking water, industrial waste water, and the like; in addition, the settlement agent can also be used for removing the heavy metals such as copper, chromium, cadmium, lead, and the like, and the pollutants such as iron, manganese, phosphates, and the like in water by settlement.

The present invention is characterized by using pre-fabricated H-type channel steel, member bar made up by using aluminium alloy section material with special section, specially-made connecting disk, connecting component, metal outer wall plate, reinforced concrete slab and conventional heat-insulating sound-insulating material, wood plate, gypsum board and screw bolt, etc. to assemble the column beam frame, roof truss, roffing, wall and floor of building, and adopting assembling method to implement building work.

The invention relates to a curing agent for curing marine poor subsoil, which belongs to the technical field of poor subsoil curing. The curing agent for curing the marine poor subsoil is composed by the components of cement clinker, granulating slag or slag, silica fume, polycarboxylic acid type water-reducer, lime, plaster, anhydrous sodium sulphate, caustic soda, sodium silicate and sodium fluosilicate. The adulteration amount of the poor subsoil curing agent is 5%-12% in application, good curing functions can be realized, and the curing agent for curing the marine poor subsoil can be applied in the poor soil curing of building sites, road embankments, roadbeds and ground base layers. The invention has the advantages that: the components of the curing agent are simple, the compatibility is reasonable, the doping amount is less, and the curing effect is good; and during the application process, the construction period is short, the construction cost is low, the induration bearing capacity is high, the induration compression modulus is strong, and the induration permeable resistance is strong.

The invention discloses a segment assembled simple box girder movable trestle construction method. The required construction simple box girder has single hole or multiple holes, and is assembled by a plurality of longitudinal (i.e. along bridge direction) segment box grinders; the method comprises the following steps: prefabricating all the segment box girders for assembling the simple box girder in concentration; assembling and erecting the first hole grinder, which comprises the steps of: assembling and erecting the trestle (i.e. assembling platform), hanging the segments on to the assembling platform according to the assembling sequence and adjusting the arch degree, line style and position accurately, constructing the segments on the assembling platform by segment assembling construction technology until complete the whole hole grinder construction, and dismounting the trestle and moving to the next hole grinder; and performing the subsequent hole grinders in order according to the construction steps of the first hole grinder. the invention achieves the advantages of simple steps, low construction difficulty, short construction cycle and low onetime fund investment; can solves the practical problems existing in the segment assembling construction process of current large-span bridge fabrication machine.

A suspension maglev rail transit system includes an orbital system, a suspension system, a control system and a car system, wherein the control system comprises a drive system, a guidance system and asuspension control system, wherein the track system is suspended in the air through upright posts, the car system is suspended vertically below the track system through the suspension system, and thedrive system and the guidance system cooperate to drive the car system to operate in the track system. The invention utilizes the levitation force with the permanent magnet repulsion force as the main force and the electromagnetic regulation as the auxiliary force to suspend the car on the air track, and realizes the stable operation through the non-contact traction of the linear motor. The invention has the advantages of low energy consumption, high safety, no land occupation, low cost, strong climbing ability, small turning radius and wide adaptability.

The invention discloses a hot tapping plugging construction method of a long natural gas delivery pipeline. The method specifically comprises the following implementation steps of: performing non-stop tapping operation; performing non-stop plugging operation; disassembling a pipeline of a cutting section; performing end connecting operation; restoring; and performing anti-corrosive backfill. The construction process of the method has the characteristics of reliability, economy, safety, simplicity in operation of an entire construction process, light labor intensity, no influence on downstream gas utilization, short working period, cost saving, suitability for various environments and the like, so that the method is increasingly generalized and applied in natural gas reconstruction and expansion projects.

The invention discloses a long tunnel fast construction process. The tunnel construction method in the direction from the entrance to the exit and the tunnel construction method in the direction from the exit to the entrance are the same and each construction section is respectively constructed from back to front. The construction process is as follows: 1, excavating construction at an initial construction section, the process is as follows: performing advance geology forecast, determining the excavating construction method for the current construction section, excavating and primary supporting; 2, excavating construction at the next construction section; 3, repeating the step 2 for multiple times until the construction tunnel is through, wherein in the tunnel construction process, found water seepage areas are timely subjected to draining treatment, and the secondary lining construction is synchronously performed on the tunnel holes formed by excavating from front to back. The long tunnel fast construction method is reasonable in design, simple and convenient in construction, safe in the construction process, short in construction process and fast in construction progress, thus effectively solving the defects and shortcomings such as large equipment investment, long construction period and slow construction progress of the existing long tunnel construction.

The invention discloses a method for connecting slotted sections in underground construction of diaphragm wall of 'deep wall, large thickness and needing rock-socketed' applied to large acale bridges and construction foundation pit excavation. The method comprises the following steps: establishing a guide wall and a construction platform; constructing I phase slotted section of the diaphragm wall; constructing of a slotted eye of II phase slotted section of the diaphragm and jagged section surface of the I phase slotted section; forming an underground diaphragm wall; cleaning and brushing the wall of the II phase slotted section repeatedly up and down by a special steel brush carried by a hydraulic grab, until the steel brush does not have obvious spare, deposit on the bottom of the eye does not increase; releasing a reinforcing cage and casting concrete so as to complete the connection of I phase slotted section and II phase slotted section after the II phase slotted section is completed; forming a complete diaphragm wall after connection. After the method is adopted, the progress of the construction of the underground diaphragm wall is greatly improved; construction cost is saved; construction problems, such as concrete circumferential motion prevention, water seepage in seam and the like can be completely solved by the jagged connection section so as to improve construction quality and safety reliability.

The invention discloses a construction method of a large-volume concrete bearing platform with one-time pouring in winter, comprising the following steps of: step 1, binding steel reinforcement cages; step 2, laying cooling water pipelines and temperature measuring elements; step 3, constructing formed templates, wherein the construction process comprises delimiting template lines and constructing formed brick dies; step 4, pouring concrete; and step 5, conserving and finishing surface: finishing surface in time when completing the pouring of the concrete, carrying out the surface finishing twice, carrying out the first surface finishing when pouring the concrete to the top, carrying out the second surface finishing when the concrete is initially congealed, and adopting a mode that external stores water for conserving when the concrete is initially congealed. The invention has the advantages of reasonable design, simple construction method step, convenient operation, short construction period, one-time pouring molding and strong maneuverability, the large-volume concrete bearing platform constructed for molding in winter has good quality, the poured concrete is not frozen, and the surface of the bearing platform can not have temperature cracks.

The invention belongs to a remote intelligent meter reading system field, is a remote intelligent meter reading system configured being used for remoter meter reading, bidirectional data transmission of an electrical meter, a water meter and an gas meter. Transmission of intelligent bidirectional data between a local end meter reading computer to a user terminal is realized by a new data transmission manner and via a common mobile communication network and low-voltage electric power carrier communication, so as to realize an object of remote controlling and user meter reading. Complementation can be performed between two communications of the common mobile communication network and the low-voltage electric power carrier communication, thereby realizing bidirectional transmission, conversion, transferring of different commnucation mode data. The remote intelligent meter reading system can directly read counting data of user's electric power meter, gas meter and water meter by the local end meter reading computer via a local area network composed of the common mobile communication network, an intelligent data collocting concentrator and the low-voltage electric power carrier communication, and peform remote control on the electric power meter, the gas meter and the water meter.

The invention relates to a construction method for a support structure of a coal tower template for a tamping type coke oven, which comprises the following steps of 1, treating a base of a steel structure supporting platform; 2, manufacturing and installing the steel structure supporting platform; 3, prepressing the steel structure supporting platform: the prepressing materials are a resistance wall for the coke oven and a precast slab for a basement, the steel structure supporting platform is overloaded and prepressed according to 110% design load, an observing point is arranged, and the prepressing time is seven days, and the observation is carried out once a day; 4, installing each falsework of the template; and 5, removing the falsework and the steel structure supporting platform. The construction method can realize effective monitoring by well design of a large-span, high-support and heavy-load template support system, particularly is the first in the country in coal towers with a span of 34.045 meters but the beam does not have cracks, solves the difficult problem of construction of a large-span, high-support and heavy-load structure, adapts to the coking technique to be developed in large size and tamping type coke ovens, and has the advantages of short construction period, revolving material saving, safety, reliability, easy quality control and high concrete strength.

The invention relates to a combined lightweight steel structure building and an assembling method thereof. The combined lightweight steel structure building comprises ground beams, angular upright posts, upright posts, ring beams, sandwich panels, a roof, staircases, doors and windows. The key technical points of the combined lightweight steel structure building are as follows: a plurality of floor bottom girders in parallel are arranged on the ground; four ground beams are arranged on the circumference of each floor bottom girder in turn; bolt fastening sheets which are connected with the ground beams and the ring beams are arranged on joints of upper ends and lower ends of each angular upright post and each upright post respectively; limit baffle plates of wall panels are arranged on angular upright posts and upright posts near the outside of the building; bolt fastening limit treadle bars of the wall panels are arranged on upright posts near the inside of the building; the wall panels comprise wall panels provided with door bodies or wall panels provided with window bodies; metal section supporting layers which are suitable to be connected with balcony bottom girders or / and corridor bottom girders are uniformly distributed between two adjacent floors; metal floor slabs are laid on the metal section supporting layers; and the roof is as follows: a waterproof ridge section is arranged on the upper part of a ridge main girder; the edge of a roof slab is embedded into the ridge section; and a roof slab slot section provided with a drainage channel is arranged on the upper part of a ramp beam of the roof.

A box culvert pushing construction method integrating comprehensive grouting, pressure maintaining and pipe roof support is characterized in that a box culvert is pushed under the pipe roof support on a culvert pushing construction working surface, and simultaneously, comprehensive grouting, lubrication, friction reduction and pressure maintaining measures are taken to control pavement sedimentation. The construction method comprises the steps of pushing the box culvert under the pipe roof support, performing the comprehensive grouting in places, forming a pressure maintaining lubrication film around a box culvert pushing body, and micro-controlling grouting under the pavement to reduce the pavement sedimentation. The method has the benefits that the pipe roof support, comprehensive grouting as well as pressure maintaining and lubrication measures are added in the construction method based on a common culvert pushing method; the prefabricated box culvert is pushed under the protection of a pipe roof; the whole construction process integrates underground water sealing, temporary tunnel face reinforcing and ground elevation micro-control measures; crossing construction can be accomplished under the condition that normal traffic of an expressway is ensured; land requisition and side rod construction expenses are not required to be increased; the risk and construction cost are low; the construction period is short; compared with the prior conventional culvert pushing technology, the method shows good superiority.

The invention discloses an underground multi-stage intelligent high pressure gas pulse formation fracturing device and a method thereof, belongs to the technical field of fracturing completion of oil and gas wells, and particularly relates to two technical sachems of the device and the method. The method is used for fracturing the underground layer by the underground multi-stage intelligent high pressure gas pulse formation fracturing device. The device is controlled by each stage of intelligent pressure encoding detonator to gradually detonate by stages at proper time to generate a large amount of high pressure gas according to the set working mode, the dynamic high pressure pulse pressure is formed in the well or holes of a formation, the formation is fractured to form a plurality of cracks, and the permeability of fluid in the formation is increased, so the oil and gas are easily produced. The device and the method have the advantages that the cyclic multiple pressure pulses which are controlled at proper pressure can be generated, so the formation can generate the compression-expansion-compression alternating 'resonance', the cracks are promoted to effectively extend, and a new fracturing network is formed, so the permeability of the formation is improved; the pollution to the formation and environment in the fracturing process is avoided; the method is suitable for the water-sensitive and acid-sensitive formation; the construction cycle is short, the cost is low, the equipment is simple and convenient, and the limitation by terrain and water sources is avoided.

The invention discloses a peaty soft soil stratum subway station construction technology. A main structure of a constructed subway station comprises base plates, side walls, top plates and middle plates distributed between the top plates and the base plates. Underground consecutive walls are arranged on outer sides of the two side walls. The base plates, the side walls, the middle plates and the top plates are all of a rebar concrete structure formed by pouring waterproof concrete. The subway station construction technology comprises the following steps: (1) underground consecutive wall construction, (2) foundation reinforcement, namely, three-shaft stirring piles are used for reinforcing the foundation of excavated foundation pits, (3) vacuum water falling, namely conducting vacuum well point water falling construction on the foundation pits needing excavating, (4) foundation pit excavation, namely, an open excavation method is used for conducting earthwork excavation on the foundation pits needing excavating with a plurality of excavating layers from top to bottom, (5) subway station main structure construction. The method is simple, convenient to realize, quick in construction speed, capable of being ensured in construction quality easily, and good in construction effect, and enables the subway station construction process of peaty soft soil stratum to be completed simply, quickly and with high quality.