277 results about "External drainage" patented technology

An urethral drain having deep external drainage channels, a low-profiled bladder retention segment, and a reversibly detachable collection segment, facilitates the draining of urine and fluids from the bladder. The low-profiled retention means minimizes bladder irritations and the deep external channels reduce the occurrence of infections. Incorporation of a reduced diameter smooth segment on the catheter, proximate the location of the external urethral sphincter allows the patient to void normally and at will. Modifying the size of this smooth segment aids the function of a defective sphincter in controlling urine leakage. The drain can be worn concealed within the urethra. Flushing action from normal voiding washes out particulate matters in the urethra and the concealed drain further minimizes contamination. Together, these features improve quality of life for patients needing catheterization.

An ice making machine having a main body and an auxiliary table which is separable from the main body, wherein the main body of the ice making machine comprises a freezing unit for making ice pieces by freezing water separated into discrete cells; a cooling system connected to the freezing unit; an ice bin for storing ice pieces made by the freezing unit; a first water supply pipe for supplying water to the freezing unit; and a first drain pipe for discharging water remaining unfrozen in the freezing unit. The auxiliary table comprises a feed water receptacle and a drain receptacle, both having a space for containing a predetermined level of water; a second water supply pipe selectively connected to the first water supply pipe to supply water contained in the feed water receptacle to the freezing unit; and a second drain pipe selectively connected to the first drain pipe to direct water discharged from the freezing unit to flow to the drain receptacle. The first water supply pipe and first drain pipe of the main body can be selectively and respectively connected to an external water line for supplying water and an external drainage for discharging water remaining unfrozen in the freezing unit.

The invention discloses a low-smoke halogen-free flame-retardant multifunctional armored cable for ship and marine engineering in the technical field of cables, comprising an electric power cable, an instrument cable and a coaxial signal cable which are distributed like three stacked cube blocks, a double-layer shielding layer lapped by an aluminum foil polyester composite strip is respectively arranged outside the electric power cable, the instrument cable and the coaxial signal cable, wherein polyester strip lapping layers are arranged outside the double-layer shielding layers of the electric power cable and the instrument cable, a filling material with sector-shaped cross section is respectively arranged in clearances among the peripheries of all cables, the electric power cable, the instrument cable, the coaxial signal cable and the filling material are twisted into a cable bundle, an external drainage wire is arranged outside the cable bundle, a total shielding layer is wholly lapped at the periphery of the cable bundle, an internal sheath is arranged outside the total shielding layer, a weaved armored layer is arranged outside the internal sheath, and an external sheath is arranged outside the weaved armored layer. The cable has a plurality of functions of transmitting an electric power signal, an instrument signal and a video signal, small laying space and compact structure, and can be used in ship or marine engineering.

The invention discloses an ecological restoration management method for coal spontaneous combustion fire potential areas and standards and aims to provide an ecological restoration mode and technology for loess hilly-gully regions fragile in ecological environment and high in potential fire risk to meet the requirement of large-area ecological restoration projects. Methods and techniques are provided for ecological restoration of control regions by a series of ecological restoration methods including reclaiming land while mining by combination of topsoil resource exploitation, internal drainage and external drainage, performing erosion and torrent control works, adopting engineering technologies and biological methods for reclamation, planting trees for greening and the like.

The invention discloses a flocculation filtration cycling water device of a washing machine and the washing machine. A water containing barrel, a flocculation container and a filtering container are sequentially cyclically communicated through pipelines; flocculating agents are thrown into the flocculation container communicated with the water containing barrel, and the water containing barrel drains water to the flocculation container for flocculation treatment; the filtering container is communicated with the flocculation container and the water containing barrel, water after flocculation treatment in the flocculation container is filtered and then drained into the water containing barrel for recycling. The flocculation container and the filtering container are communicated with an external drainage part through a shared drainage control valve; the drainage control valve is of a three-way valve structure with two water inlets and one water outlet and on-off of the two water inlets controlled integrally; the two water inlets are communicated with the flocculation container and the filtering container respectively; the drainage control valve is internally provided with an isolation structure for preventing communication of the two water inlets. Flocculation and filtered sewage drainage are controlled by the same drainage control valve, the structure is simple, the cost is reduced, and the occupied space is reduced.

A low-cost removable drainage bag support structure that can be attached to any location on the patient's hospital garment or personal clothing, without any uncomfortable and cumbersome belts or other attachments that tie the drainage bag directly to the patient's body, and without use of any expensive and inefficient custom-made undergarments. An attachable, easily removable and disposable drainage bag support structure that can be easily and cost-effectively utilized with standard hospital garments, and at the same time safely and securely support drainage bags for the out-patients, allowing to place the drainage bag out-of-sight when in public and reducing interference with patient's mobility, whereby improving dignity and quality of life for the out-patients that must carry in public one or more drainage devices. A low-cost attachable support structure that allows quick and easy removal from the garment, easy disposal and also allows hospital staff to monitor and observe the content and condition of the drainage bag placed inside the support structure.

A cannula device for draining sub-retinal fluid externally to the eye includes a shaft, an outer sleeve, and an inner sleeve. The outer sleeve and the inner sleeve have a curve therein to access the back of the eye externally. The outer sleeve is extendable relative to the inner sleeve and the shaft, and the outer sleeve includes a penetrative tip to penetrate the sclera and provide access to the sub-retinal fluid to the inner sleeve.

A compressor oil diversion and collection system used in a compressor having a housing, a crankshaft having shaft seals, refrigerant and a compression device for compressing the refrigerant. The system includes a shaft sealing mechanism that uses a lubricant for preventing compressor refrigerant from leaking out of the compressor housing and has a space where the lubricant collects. A diversion mechanism is deployed for directing excess amounts of said lubricant from the space to a receiver for receiving the excess amounts of said lubricant from the diversion mechanism. The receiver may be in the form of an internal cavity which includes a removable cartridge located in the cavity for collecting the excess amounts of said lubricant, an external collection reservoir or an external drainage tube.

The invention discloses a neurosurgical anti-detachment drainage fixator including a strap, a fixing sleeve, a placement slot, a spring, a slide plate, a connecting plate, a mounting plate, an applicator, a connecting rod, a top pin, a fixing plate, a switch, and an alarm,, a neurosurgical anti-detachment drainage fixator has a clever structure, powerful functions and simple operation. By using the device, when the drainage tube at the treatment site of the patient is pulled by an external force, the device can alert doctors and nurses that the current drainage tube is in the pulled state, sothat the doctors and nurses can carry out corresponding treatment on the pulled drainage tube, effectively prevent the external drainage tube from being separated from the treatment part of the patient due to the external pulling force, and play a protective role on the patient.

The invention discloses a bile and pancreatic juice drainage tube which comprises a loop type bile external drainage tube and a pancreatic juice internal drainage tube. The loop type bile external drainage tube comprises a straight tube, an elastic loop pipe I and an elastic loop pipe II which are connected in sequence, wherein the elastic loop pipe I and the elastic loop pipe II are in the shapes of Archimedean curves one the whole. The pancreatic juice internal drainage tube comprises a drainage tube body and a tube cap located at the upper end of the drainage tube body, and a line II is arranged on the drainage tube body and penetrates through the side wall of the straight tube and extends in a tube cavity of the straight tube. The bile and pancreatic juice drainage tube reduces the probability of slipping of the loop type bile external drainage tube, does not stimulate bile duct mucosae, duodenal papilla, gastrointestinal mucosae and throat mucosae, and has an effect of preventing the pancreatic juice internal drainage tube from dislocating or escaping.

The invention provides a sponge urban road structure which avoids the deposition of pavement rainwater, comprising a roadway drainage asphalt pavement, a greening planting tray and an external drainage pipe. Two symmetrical middle protective plates are fixed through concrete mosaic at the inner end side of the roadway drainage asphalt pavement, and a concrete channel is arranged between the two middle protective plates. The invention comprehensively realizes a sponge city road structure avoiding pavement rainwater deposition through the mutual cooperation of the various structures, Construction of sidewalks, A 6CM thick permeable brick pavement pave through that sidewalk, 3CM medium sand level layer are sequentially laid under that water-permeable brick pavement of the sidewalk, 10CM permeable cement concrete base course and 10CM subgrade mixed with crushed stone, so that the sidewalk can reach more than 70% of the water permeability, and can create a low-carbon environmental protection of the natural living environment, maintain the ecological balance of the city, maintain good water permeability of the ground, moisture retention.

The invention provides a percutaneous minimally invasive stereotactic puncture treatment system for intracranial lesions. The treatment system comprises a puncture part, a guide part, a limit part and a drainage part. The drainage part comprises a drainage tube and an external drainage device. The puncture part is sleeved with the drainage tube and a drill of the puncture part is exposed. The guide part fixes the drainage tube and the puncture part in the puncture direction. The limit part controls the displacement of the drainage tube and the puncture part in the puncture direction. When a puncture is finished, the puncture part is removed from the drainage tube, and by connecting the external drainage device with the drainage tube, irrigation and drainage are achieved. The percutaneous minimally invasive stereotactic puncture treatment system for intracranial lesions, which is used for treatment and biopsy of intracranial lesions, not only achieves minimal trauma, high puncture accuracy, high safety, few complications, good curative effects, and rapid recovery, but also boasts less technical difficulty and easy operation, and therefore the percutaneous minimally invasive stereotactic puncture treatment system for intracranial lesions is suitable for treatment and biopsy of superficial intracranial lesions, especially for treatment and biopsy of deep or minimal intracranial lesions, and has a wide range of application.

The invention discloses a visible cerebral ventricle and subdural external drainage system. The visible cerebral ventricle and subdural external drainage system comprises a visible cerebral ventricle puncture system and a drainage system. The visible cerebral ventricle puncture system comprises a visible puncture guiding core, and LED light sources and a miniature camera are coaxially arranged at the intracranial end of the visible puncture guiding core. The wall of a puncture sheath is see-through, and millimeter scales are arranged on the outer wall of the puncture sheath. The visible cerebral ventricle and subdural external drainage system has the remarkable advantages that as the miniature camera can be connected to one end of the visible puncture guiding core, and a monitor is connected to the other end of the visible puncture guiding core, cerebral puncture is completely performed in a direct-viewing mode, precision is improved, and it is avoided that due to operation based on a rule of thumb, the cerebral tissue is damaged, or cerebral hemorrhage occurs. As miniature vanes (fixing clamps) are arranged at the position distant from the cerebral ventricle by 10 cm-15 cm and used for fixing a drainage tube at the incised skin, the defect that a drainage tube used for the current clinic is simply bound and fixed through threads is overcome.

The invention discloses a solid-liquid separation mechanism capable of adjusting the effluent flow rate and the sludge concentration and a using method thereof, and belongs to the field of sludge treatment equipment. The solid-liquid separation mechanism comprises a mixing and flocculating box, the upper portion of the mixing and flocculating box is provided with a discharge port, a fixed support plate and a driving shaft are arranged in the mixing and flocculating box, the driving shaft is sleeved with a stirring shaft frame which is provided with stirring shafts and a pushing rod, the stirring shaft is provided with stirring blades and scraper plates, a water filtering assembly is arranged between the stirring shaft frame and the fixed support plate and comprises fixed rings, gaskets and floating rings, the lower portion of the water filtering assembly is connected with a drainage pipe which is connected with a three-way pipe, the two ends of a straight way of the three-way pipe are each connected with a butterfly valve, and the upper end of the straight way is in threaded connection with a flow rate adjusting pipe and is connected into an external drainage tank; a cleaning pipe is arranged in the mixing and flocculating box and provided with a plurality of water spray nozzles. According to the solid-liquid separation mechanism, the sludge concentration can be increased, and the effluent flow rate and the concentrated sludge concentration can be freely adjusted.

The surgical drain anchoring device includes a resilient, flexible pad having an upper surface, an opposing lower surface, a centrally positioned aperture, and a slit extending radially outward from the aperture to the perimeter of the device. A neck member positioned on the upper surface defines a central channel aligned with the aperture, and a tapered member aligned with the aperture extends from the lower surface so that a surgical drain can pass through the neck, the aperture, and the tapered member. An outer ridge member adapted for attachment of an external drainage bag thereto also extends from the upper surface. The external drainage bag includes a primary opening configured to attach onto the outer ridge member and a secondary opening configured to drain fluid from the drainage bag. The device can also include a strap, tie, or clip configured for securing the neck around the surgical drain.

The present invention provides a sulfate type saline-alkali pond construction system and an ecological breeding and planting method. The construction system comprises a ring-like outer channel, one end of the ring-like outer channel is provided with a water inlet communicated with an external water source, and the other end of the ring-like outer channel is provided with a water outlet communicated with an external drainage channel; the area enclosed by the ring-like outer channel is divided into m*n planting regions, each planting region comprises a rice field and a field ridge, a circular trench and a channel ridge which successively surround the rice field from inside to outside, an inner channel communicated with the ring-like outer channel is disposed between any two adjacent plantingregions, and each field ridge and each channel ridge are respectively provided with a water gate; m and n are integers greater than or equal to 2. Ecological breeding and planting operation can be well performed in saline-alkali areas, direct influence of water between the channel and the rice field can be relieved, the rice field can also be prevented from being influenced by the excessively high water level in the production period, and fish can also be prevented from entering the rice field.

The invention provides a collection device for a subway stray current. The collection device comprises an AC / DC module, a first voltage acquisition circuit, a second voltage acquisition circuit, an ADC module, a CPU and a 485 isolation circuit. The AC / DC module connected with an external alternating-current power supply converts an alternating-current voltage signal into a direct-current voltage signal and provides the direct-current voltage signal for the ADC module and the CPU. The first voltage acquisition circuit is connected with a reference electrode; and the second voltage acquisition circuit is connected with a subway track. The ADC module is used for converting the reference voltage signal and the subway track voltage signal into two paths of digital signals respectively and transmitting the signals to the CPU. The CPU compares the two paths of digital signals to carry out logical operation and transmits the operation result to an external electric drainage cabinet by the 485 isolation circuit. According to the invention, the reference electrode signal and the subway track voltage signal are collected and compared to identify the subway stray current amplitude and the identification result is sent to the external drainage system, so that the stray current can be drained timely and thus the stable operation of the subway is guaranteed.

The present invention provides a flush toilet or a drain pedestal that prevents clogging of pipes by aligning the direction of dirt passing through a drain trap without hindering the discharge capacity of drain by siphon action. The drain socket of the present invention is a drain socket that connects the outlet (7) of the elbow drainage channel of the flush toilet body (5) and the drain pipe (2) arranged outside the flush toilet body, and is characterized in that: It has: a drainage seat body (3) connected to the inlet of the elbow drainage road and the outlet connected to the drainage pipe; a siphon induction part arranged on the inner wall of the drainage seat body to induce the siphon effect (11); and a rectifying plate (4) extending from the inner wall surface toward the inner side of the flow path at the upstream of the siphon induction part of the drain socket body.

An embodiment of the present invention provides an aqueous humor drainage device and a manufacturing method thereof, belonging to the field of medical instruments. The aqueous humor drainage device comprises an aqueous humor dispersion disk, an intraocular drainage tube and an external drainage tube, the aqueous humor diffusing disk is located under the conjunctiva in the upper part of the eyeball, in the suprascleral region, both the intraocular drainage tube and the external drainage tube are connected with the aqueous humor diffusion disk, the input part of the intraocular drainage tube isused for communicating with the anterior chamber region or the posterior chamber region in the eye, the output part of the intraocular drainage tube is used for communicating with the input part of the external drainage tube, and the output part of the external drainage tube is used for communicating with the conjunctival region on the lower surface of the eye. The aqueous humor drainage device can improve the condition of fiber wrapping, meanwhile, the aqueous humor drainage device can still effectively drain the aqueous humor under the condition of fiber wrapping, the service life of the aqueous humor drainage device is prolonged, the structure design is reasonable, and the practicability is strong.

The invention discloses an intraperitoneal Y-T type hepatic duct-duodenum biliary tract external drainage tube. The drainage tube is composed of a Y-type drainage tube with a Y-type structure and a T-type drainage tube arranged on the Y-type drainage tube, wherein the top end of the Y-type drainage tube is divided into a left shunt tube and a right shunt tube; the left shunt tube is inserted into the left intrahepatic tube of a human body while the right shunt tube is inserted into the right intrahepatic tube of the human body; and a biliary tract duodenum internal drainage tube at the tail end of the Y-type drainage tube is inserted into the duodenum; and a biliary tract external drainage tube is also arranged at a lateral end of the middle part of the Y-type drainage tube. The intraperitoneal Y-T type hepatic duct-duodenum biliary tract external drainage tube disclosed by the invention is novel in design, easy to operate and reliable in work; meanwhile, since the tail end of the Y-type drainage tube is inserted into the duodenum, the intrahepatic bile can be drained to the duodenum through the Y-type tube so as to assist intra-intestinal food digestion; and the T-type drainage tube is arranged outside the human body, thus decompression drainage and support can be realized, the biliary tract healing is facilitated, and the bile conditions and post-operation cholangiography are convenient to observe.

The invention discloses a water bag type gall external drainage tube. The water bag type gall external drainage tube comprises a drainage tube section I, a drainage tube section II and a drainage tube section III which are communicated in sequence, wherein a ball bag thin film sleeves the outer wall of the drainage tube section II; the cross section of the ball bag thin film is in a plum blossom shape; the drainage tube section I is internally provided with a pipeline I communicated with the drainage tube section II and a pipeline II communicated with the ball bag thin film; the other end of the pipeline II is connected with a pipe by a cap and the other end of the pipe is connected with a three-way valve; the cap is provided with a cylindrical head part and a circular-platform-shaped tail part; the small end of the circular-platform-shaped tail part is fixedly connected with the cylindrical head part. The water bag type gall external drainage tube has higher tension and is prevented from being released; the water bag type gall external drainage tube is suitable for common bile ducts with different diameters; the water bag type gall external drainage tube has no damages to bile duct mucosa, duodenal papilla and upper gastrointestinal tract mucosa when being put in or taken out; the water bag type gall external drainage tube can be prevented from displacement and the obstruction of the biliary tract is not caused.

A drainage system (1) for installation in a wet area such as a shower stall. The drainage system (1) comprises an outer drainage conduit (2) adapted to extend within a subfloor (100) of a wet area and an inner drainage conduit (3). The conduit (2) comprises a rim (20) and a pipe body (21). The inner drainage conduit (3) also comprises a rim (30) and a pipe body (31). The rim (30) and pipe body (31) are nestable within the outer drainage conduit (2). When nested, the pipe bodies (21, 31) are adapted to be connectively sealed together using sealant, the rims (20, 30) are adapted to hold a waterproofing membrane (107) between the rims (20, 30,) and to be connectively sealed in a water-tight manner to the waterproofing membrane (107) using sealant or, in the absence of a waterproofing membrane (107), the rims (20, 30) are adapted to be connectively sealed together using sealant in a water-tight manner.

The invention discloses a training facility for increasing the field viability of andrias davidianus. The training facility is characterized by comprising a mountain spring water purifying pool, andrias davidianus culturing pools, a training pool and a forage fish culturing pool, wherein the mountain spring water purifying pool, the andrias davidianus culturing pools, the training pool and the forage fish culturing pool are provided with water inlet ends and water outlet ends; the water inlet end of the mountain spring water purifying pool is connected with upstream river water, and the wateroutlets of the mountain spring water purifying pool are connected with the water inlet ends of the andrias davidianus culturing pools; the water outlet ends of the andrias davidianus culturing pools are connected with the water inlets of the training pool; the water outlet end of the training pool is connected with the water inlet end of the forage fish culturing pool; the water outlet end of theforage fish culturing pool is connected with an external drainage ditch. The invention also provides a method for training and culturing the andrias davidianus by utilizing the training facility. Through artificial training, the initiative predation capability of the andrias davidianus can be strengthened, andrias davidianus fries which can adapt to a field natural environment and have strong bodies, strong swimming ability, operation resistance and strong initiative predation capability can be cultured under an artificial condition, and a good release effect can be finally realized.

The invention discloses a pressure monitoring and adjusting device for an external drainage system. The pressure monitoring and adjusting device has the advantages that intracranial pressure data of apatient are detected by a detection device and transmitted to a controller, the controller transmits the intracranial pressure data to a display screen for display, so that a doctor can acquire the current intracranial pressure of a patient in real time, and determination of a therapeutic schedule of medical staff and therapy are accelerated. Besides, the acquired intracranial pressure of the patient is compared with intracranial pressure and intracranial pressure adjusting bottle relative adjustment height data in a database by the controller, an intracranial pressure adjusting bottle is adjusted to a corresponding height, a lifting device is driven by a lead screw, the lifting process is stable, and intracranial infection of the patient caused by lifting instability of the intracranialpressure adjusting bottle is avoided. When the intracranial pressure adjusting bottle rises to be abutted to a lead screw fixing plate, the abutting detection device generates abutting signals and transmits the abutting signals to the controller, the controller outputs alarm signals and the intracranial pressure data to an external hospital duty room, and an operator on duty timely finds and handles the abnormal condition of the patient.

The invention discloses drainage equipment for guaranteeing bridge traffic safety. The drainage equipment comprises a bridge body, a guardrail is fixedly arranged on the top end face of the bridge body, a lifting cavity with an upward opening is formed in the bridge body, a shaft sleeve chute with an upward opening is formed in the inner bottom wall of the lifting cavity, a drainage mechanism is arranged on the inner wall of the right side of the lifting cavity, a deceleration strip is slidably arranged in the lifting cavity, and a first through hole is formed in the deceleration strip in a left-right penetrating mode; under the conditions of rainstorm and the like, poor drainage caused by blockage of the filter screen in the bridge drainage pipeline is avoided; and the deceleration stripis lifted when too much water is accumulated, so that vehicles running on the bridge slow down, traffic accidents caused by road slip in rainy days are avoided, the emergency drainage channel is automatically punched to drain water outwards to decelerate accumulated water on the bridge floor, and the driving safety on the bridge floor is guaranteed.

The invention discloses an integrated full-automatic hand washing device, comprising an equipment cabinet, a display screen, a control panel, a sensor, an upper water pipe, a hand dryer, an electric heater, a halter, a lower water pipe, a cleaning fluid storage tank, a cleaning fluid pump, a disinfectant storage tank, a disinfectant pump and a clean water pump. The integrated full-automatic hand washing device is characterized in that the control panel is respectively connected with the sensor, the display screen, the cleaning fluid pump, the disinfectant pump, the clean water pump and the hand dryer through circuits and used for controlling these components through programs; the cleaning fluid storage tank is connected with the cleaning fluid pump; the disinfectant storage tank is connected with the disinfectant pump; a clean water source is connected with the clean water pump through the upper water pipe; the outlets of the cleaning fluid pump, the disinfectant pump and the clean water pump are connected with the halter through pipelines; and the lower water pipe is connected with an external drainage pipeline. The integrated full-automatic hand washing device has the advantages of time saving, water saving, constant temperature and comfortableness; and as long as a cleaning part is close to the halter, the whole cleaning processes of cleaning, disinfecting and drying can be conveniently completed in one step according to cleaning time and cleaning process specified by basic hygienic standard.

The invention relates to a water-saving seedling nursery. The water-saving seedling nursery comprises a soil layer, a protection layer, a water absorption layer, a water storage layer, a water inlet pipe, water conveying pipes, sprayers and a drainage port, wherein the seedling nursery structure sequentially comprises the soil layer, the protection layer, the water absorption layer and the water storage layer from top to bottom; the water inlet pipe is located in the water storage layer; the water conveying pipes extend to the ground from the water storage layer; the sprayers are connected with the water conveying pipes and located above the soil layer; a protection net is arranged in the protection layer; a water absorption material is placed in the water absorption layer; the sprayers are atomization sprayers; pin holes are formed in the protection net; the water absorption material in the water absorption layer is made of absorbent cotton and sponge; the sprayers are made of metal, water sprayed from the sprayers have a simulated rainfall effect, and absorption of the seedling nursery is facilitated; the water storage layer is connected with the external drainage port. Self-sufficient, recyclable and water-saving irrigation is adopted, rainwater on a rainy day is collected, irrigation is performed through atomization spraying, and water resources are saved.

The invention relates to an earthquake-proof processing method for a liquefiable sandy soil foundation. The method adopts the technical proposal that: the technological flow of the method for integrating dynamic vibration and static loading is as follows: the dynamic vibration method is utilized to perform construction on a reinforced vertical displacement hull on the liquefiable sandy soil foundation and the static method is utilized to perform loading and prepressing. Firstly, a sand cushion is laid on the surface of the liquefiable sandy soil foundation to be as an external drainage channel of the vertical displacement hull for drainage; secondly, the type and the distribution of the reinforced vertical displacement hull are worked out, and the diameter and the space of a sleeve of the reinforced vertical displacement hull and the diameter of a sand well are determined; thirdly, the reinforced vertical displacement hull is drilled into the liquefiable sandy soil foundation; fourthly, the static method is utilized to perform loading and prepressing; and finally, loading and prepressing raw materials can adopt materials such as sand, stones, soil and so on, and the loading height depends on factors such as the properties of liquefiable sandy soil, the engineering properties, the engineering earthquake resistant design requirements and so on. The method has the advantages that: the earthquake resistance of the liquefiable sandy soil foundation is improved; the environmental pollution is reduced; and the construction cost is lower.

The invention discloses a solid-liquid separation device based on sewage treatment. The device comprises a device body, wherein a solid-liquid separation cavity is formed in the device body, a water inlet pipe is fixed on the upper side of the solid-liquid separation cavity, the lower end of the water inlet pipe is communicated with the solid-liquid separation cavity, and the upper end of the water inlet pipe is connected with an external drainage pipe; a filter screen is fixed in the solid-liquid separation cavity, and a water treatment device is arranged on the lower side of the solid-liquidseparation cavity. The separation cavity in the solid-liquid separation device is obliquely arranged, solid waste is mutually squeezed and dewatered through a push plate when being conveyed, so thatsolids and liquid can be completely separated initially. Separated water can be deodorized and drained, environmental water pollution is reduced, the separated solids are centrifugally dewatered, so that the lowest water content of the solids is reached, and subsequent waste classification and recovery treatment is facilitated. The device has high solid-liquid separation efficiency, and is convenient to install and use.

The invention discloses an automatic pressure regulation type sluicing control device for a tunnel in a high-pressure water-abundant area. The device is arranged at the bottom of each cable groove of an operation tunnel in a wall footing limited discharge area of the tunnel in the high-pressure water-abundant area. A water inlet of the device is connected a lining back underground water seepage pipeline, and a water outlet of the device is connected with a tunnel transverse water discharge pipe. A water control valve 100, a Y-type pipeline filter 200 and an adjustable sluice valve 300 are sequentially arranged between the water inlet and the water outlet to form an automatic pressure regulation type slicing control mechanism. The automatic pressure regulation type sluicing control device has advantages that lining external drainage and an internal tunnel drainage system can be flexibly combined, a sluicing threshold is set, and automatic water drainage is realized along with water quantity changes, so that water pressure applied to linings is adjusted; further, silt in underground water can be filtered while filtered substances can be changed at any time to effectively reduce sluice valve damage probability, the sluice valve can also be replaced at any time, convenience in use is achieved, and tunnel lining structural safety is guaranteed.