673 results about "Pebble" patented technology

A constructive water resource recycling method is characterized in that great-sized water reservoirs, each of which has a drainpipe provided above for connecting to the ground surface, are buried in the underground soil; deep drainage trenches are selectively provided under the macadam stratum; the side walls of the deep drainage trenches have water inlets such that the rain can be led down to the soil via drainage bands, while trenches are covered by trench covers; the water contained in the water reservoirs can be drawn by water-drawing pipes to the ground surface for further utilization through a water pump of natural power; the great-sized water reservoirs are covered by soil and macadam stratum, and then an instantly permeable layer which is composed of macadam, pebbles or sand; finally, the instantly permeable layer is covered a concrete pavement and then drilled through to complete a constructive permeable pavement, thereby efficiently recycling the rain for fully utilization.

The invention belongs to the technical field of fruit trees and forestry cultivation, and discloses a method for promoting the lateral rooting of a annual carya illinoensis seed seedling, the root of a sprouting carya illinoensis seed seedling is mechanically cut, and a pair of scissors is utilized to cut the part below the fibrous root; and the seedling which is subjected to mechanical root cutting is transplanted into a nutrition pot, melon seed-shaped pebbles are laid on the bottom of the nutrition pot for 5 centimeters, and a nylon net is cushioned on the melon seed-shaped pebbles. A matrix is put in a container, the seedling is transplanted in a facility which is cold-proof and sun-proof for one month, a furrow which has the width of 13 centimeters and the depth of 20 centimeters is defined in a seedbed of a land, and the row spacing of the furrow is 30 centimeters. A layer of non-woven fabric is laid at the bottom of the furrow, a chemical rooting-resistant agent is coated on the non-woven fabric, and the nutrition pots which are planted with the seedlings are put on the non-woven fabric according to the planting distance of 20 centimeters, and are fixed finally. The water and fertilizer management period is normally carried out. The method can be used for effectively promoting the lateral rooting of the carya illinoensis seed seedling.

The invention discloses a construction method for undermining a connected channe between shield sections in a water-rich sand cobble stratum tunnel. The construction method comprises steps of preparing for construction, constructing for a precipitation well, performing grouting reinforcement on stratum around a segment of a connection port of the connected channel, performing pre-measurement line drawing for a segment dismounting part on the segment of the connection port of the connected channel, setting up a temporary steel support at the connected channel, setting up a pipe shed and performing pipe shed grouting reinforcement, cutting the segment dismounting part and monitoring segment deformation and vault crown settlement conditions in real time, beginning to perform earth rock excavation and initial stage support of the connected channel, performing earth rock excavation and initial stage support of a pump house, performing waterproof construction of the connected channel, performing secondary lining for the connected channel and the pump house and second lining back grouting, dismounting the steel support and cleaning the site, and accepting check. The construction method of the invention is applicable to the construction of the water-rich sand cobble stratum connected channel, is reasonable and strict in layout, safe in construction process and multiply guaranteed in construction quality.

The present invention discloses a riprap rock-fill concrete construction method, which relates to a construction method for the large volume concrete. The present invention adopts self-compacting concrete having superior anti-segregation performance and good plasticity-retention performance, and firstly the concrete is poured into a bin, and then block stones or pebbles with the particle size smaller than 4 cm are poured into the poured self-compacting concrete in a mechanical way or a manual way, and the self-compacting concrete can fill up and compact the vacancies caused in the block stone settlement path at any time, the high anti-segregation performance ensures that the self-compacting concrete does not segregate and bleed water under the impact of the block stones, and finally the self-compacted rock-fill concrete with high intensity is formed. The method has the advantages that the construction is convenient, and the present invention has significant effects on the aspects of improving the construction efficiency and saving the construction cost, and the rock-fill concrete formed has high degree of compaction, the cement used is less, the hydration temperature rise is low, the volume stability is good, and the comprehensive performance is excellent, meanwhile, the present invention also has the advantages of energy-saving, environmental protection and being easy for continuous construction.

The invention relates to a river pollution bottom sediment ecological remediation method. A bottom sediment stacking region is arranged at a river bank side, anti-seepage treatment is carried out on the bottom and the periphery of the bottom sediment stacking region, bottom sediments dug from a river and polluted by heave metals are added with a curing agent and are stacked in the bottom sediment stacking region; a separation region is arranged between the bottom sediment stacking region and a river water flow passage, and at least one separation wall is arranged in the separation region; an in-situ covering region is arranged in the dredged river water flow passage, first covering layers are laid at both the bottom of the separation region and the bottom of the in-situ covering region, a second covering layer and a third covering layer are also arranged on the first covering layer of the in-situ covering region, a filler of the first covering layer is a mixture of clay and the curing agent, the second covering layer is formed by sand grains, and the third covering layer is formed by pebbles and natural zeolite. According to the river pollution bottom sediment ecological remediation method disclosed by the invention, not only can the heavy metals in the bottom sediments be adsorbed, but also water can be accumulated, and a landscape function of the river is promoted; an in-situ remediation technology not only can prevent release of bottom sediment pollutants, but also can improve a water quality purification function of the river.

The composite water-purifying wetland system for northern low temperature region consists of three serially connected subsystems, including one stabilizing pond subsystem, one undercurrent wetland subsystem and one water draining pond subsystem. The stabilizing pond subsystem has one flexible partitioning wall to separate the pond into one front reservoir and one purifying area, and planted emergent vegetation zones and submerged plant zones. The undercurrent wetland subsystem consists of sand filtering modules, wetland modules and aerating water-distributing wells. The water draining pond subsystem consists of water draining canals and serially connected biological ponds. The present invention has well combined engineering measures and ecological measures to purifying polluted water for several times, saving in investment, high water purifying effect and high economic and ecological benefits.

A oscillating sorting conveyor is adapted for separating whole berries of wine grapes from undesirable components such as “shot berries” (immature grapes), stems, raisins, leaf material, bugs, pebbles and the like. The sorter deploys a downward tilting trough that is driven to oscillate. A screen is disposed at the bottom of the trough such that whole berries are conveyed over the screen while the undesirable components pass through the screen. The preferred embodiment of the screen has a non-uniform cross-section to improve the efficiency of removal the undesirable components without clogging or requiring constant maintenance. The preferred embodiment of the oscillating conveyor is driven by a cam and cam follower, in which the cam driving shaft is counterweighted to minimize vibration. The more preferred embodiments minimize damage to the grape berries while efficiently removing the undesirable components.

The tree-panting method includes the steps of drilling 3-5 deep holes at the bottom of the tree hole; inserting hollow anti-seepage pipes of biologically degradable material and containing 50-98% water in the holes and installing water retaining material in the hollow pipes; setting anti-seepage layer around the hollow pipes; covering the bottom of the tree hole with one layer of plant straw and spraying water; setting prefabricated container in the shape of flower pot into the hole; planting tree seedling in the container; watering; covering with film and pressing the film with soil or pebbles, etc.

The invention discloses an ecological floating bed device for lake water pollution restoration. The ecological floating bed device comprises a floating bed frame, a floating strip, a balance block, a planting filler, a fixing rope and a plant. The floating bed frame adopts a wood or bamboo support, a frame and stand columns. The floating strip is made of polyethylene foamed plastic. The planting filler is made of soft plant straws such as straws, maize leaves, thatch and the like. The fixing rope and a connecting rope are nylon ropes or hemp ropes or iron wires. The balancing block is made of gravel or grait. The gravel or grait is placed into a net bag. Each single ecological floating bed body is composed of 36 floating bed cells. The planting filler is made into the spherical shape or elliptic shape and is placed into the net bag. Meanwhile, the planting filler is fixed into each floating bed cell of the floating bed frame, and plants are planted into the planting filler. The ecological floating bed device is low in cost, firm and durable, and has the advantages of removing pollutant in lake water, relieving the water eutrophication, and being remarkable in economic and environmental benefits.

The invention discloses a concrete material having the functions of heat conduction and heat storage, and a preparation method thereof, and belongs to the technical field of building materials. The concrete material having the function of heat conduction and heat storage, disclosed by the invention, comprises 15-25 parts of cement, 15-25 parts of quartz sand, 15 -25 parts of natural pebbles, 10-15 parts of graphite, 20-30 parts of water, 1-3 parts of water reducing agents, 1-3 parts of expanding agents, 5-10 parts of phase-change polyethylene microcapsules and1-5 parts of aramid fibers. The preparation method comprises three steps: step 1) preparing cement slurry and performing the heat conduction on the cement slurry; step 2) preparing hot concrete slurry; step 3) pouring concrete. The working procedures are simple. Through the adoption of the concrete material and the preparation method, disclosed by the invention, the double purposes of good heat conducting effect and good heat storing effect for the concrete material having the functions of heat conduction and heat storage can be realized.

The invention relates to rainwater treatment and recycle, and provides a rainwater runoff strengthening treatment and recycling parking space and a sidewalk system. A waterproof layer, a pebble supporting layer, an adsorptive filler layer, a filter filler layer, a steel grating plate layer and a permeable layer are sequentially arranged in a pit with depth of 1.2 to 1.5 meters from bottom to top;the system also comprises a recycle water well which takes the waterproof layer as the well bottom, takes concrete as the well wall and penetrate other layers; and a water collecting pipe layer is horizontally arranged in the pebble supporting layer, and the water collecting pipe layer consists of water collecting pipes connected across and provided with holes, wherein one or more water collecting pipes are connected to the recycle water well through an opening on the wall of the recycle water well. The system has multiple functions of water penetration, filtration, adsorption, storage, rainwater recycle and the like, and can quickly and efficiently reduce urban rain flood; and specific rainwater treatment fillers can be selected according to the pollution characteristics of regional rainwater runoff, so that the blockage of the lower basic filler is avoided, the accommodating capacity of the system on pollutants is increased and the service life of the system is prolonged.

The invention provides an off-site treatment method and system for mud polluted by heavy metals in a river. The method comprises the following steps of: (1) conveying dug bottom mud to the bank, washing off pebble, macadam and coarse sand, and performing thermal refining treatment on the bottom mud containing a leacheate; (2) performing mud and water separation on the bottom mud subjected to the thermal refining treatment; (3), sieving mud fluid subjected to the mud and water separation, and sieving out medium-fine sand; (4) removing coarse mud from the undersized mud fluid; (5) performing mud and water separation on the mud fluid, and conditioning the bottom mud with relatively high concentration by use of a flocculant; (6) dewatering the conditioned mud fluid; (7)mixing and stirring the dewatered bottom mud and a stabilizer solution, and performing stable consolidation treatment. The system comprises a roller stone washer, a mud collection pool, a spiral sand washer, a mud fluid mixing and conditioning pool, a mud fluid precipitation pool, a vibrating sieve, a hydraulic swirler, a mud fluid condensation pool, a mud fluid conditioning pool, mechanical dewatering equipment and stable consolidation stirring equipment. The method and the system are convenient to implement and operate, good in treatment effect and free from secondary pollution.

The invention discloses a thermal hydraulic characteristic testing device and method for tritium blowing helium of a breeding blanket pebble bed of a fusion reactor. The thermal hydraulic characteristic testing device for the tritium blowing helium of the breeding blanket pebble bed of the fusion reactor is mainly used for researching the flow and heat transfer characteristics of the tritium blowing helium of the solid breeding blanket layer of the fusion reactor between breeding agent pebbles of the pebble bed. The thermal hydraulic characteristic testing method includes that using a non-contact type high-frequency induction power to heat quasi metal breeding agent pebbles to simulate high-power density nuclear heat generated by the breeding agent pebbles in the pebble bed, researching the thermal hydraulic characteristics of the pebble bed under changed tritium blowing helium temperature, speed and pressure, breeding agent pebble arrangement mode, size and power density and the like, measuring the temperature distribution of the breeding agent pebbles and pebble bed wall surface, and obtaining a convection heat transfer correlation equation and a flow resistance relation to provide supports for testing and demonstrating the nuclear heat transmission of the neutron deposition in the pebble bed on the breeding agent pebbles and the tritium blowing helium flow and heat transfer characteristics under laboratory conditions, verifying the feasibility of a solid breeding blanket designing scheme and the correctness of a numerical method and data, and researching and developing Chinese solid experiment blanket modules of ITER.

The invention discloses a negative-ion water purification ceramic ball. The negative-ion water purification ceramic ball comprises, by weight, 55-76 parts of Gui mineral, 32-54 parts of elbaite, 28-49 parts of basalt, 11-17 parts of potassium feldspar, 9-17 parts of zeolite, 8-14 parts of germanite, 12-17 parts of kaolin, 6-11 parts of indianite, 14-20 parts of bryozoatum, 7-14 parts of shell powder, 17-22 parts of pebble, 12-19 parts of pearl powder, 30-35 parts of pi-mineral balls, 11-15 parts of tourmaline balls, 14-18 parts of selenium-rich mineralized balls, 4-7 parts of negative-potential balls, 65-90 parts of limonite balls, 38-47 parts of medical stone balls, 3-5 parts of activated carbon, 68-83 parts of tourmaline, 12-20 parts of far-infrared powder, 50-88 parts of clay, 13-22 parts of sepiolite, 40-60 parts of inorganic nano-selenium mineral powder, 40-58 parts of negative-potential mineral powder, 45-63 parts of adhesive, other 45-50 parts of kaolin and 20-40 parts of medical stone. The negative-ion water purification ceramic ball has the advantages that high-concentration efficient and durable negative ions can be released by the negative-ion water purification ceramic ball, electrolytic actions can be carried out between the negative-ion water purification ceramic ball and water, accordingly, hydroxide ions with negative electricity can be generated, macromolecule groups in the water can be diminished, and the dissolving capacity and the permeability of the water can be improved.

The invention provides a method for replacing a shield cutter in a sand-pebble layer, which comprises the following steps: a, preparation steps before replacing the cutter are as follows: (1) selecting a position for replacing the cutter; (2) establishing a dewatering well to cause a shield cut position to completely be in the range of a drawdown curve; and (3) modifying soil mass in a soil storehouse, carrying out grouting on the upper part of a shield shell, pressing and injecting oil greases for a shield tail, dredging and washing grouting pipelines; b, steps for replacing the cutter are as follows: (1) carrying out dewatering construction and emptying the soil mass in the soil storehouse when the water level in the dewatering well reaches the required water level; and (2) installing a blanking plate in an empty position between the two pairs of cutter heads, rotating the cutter heads and performing replacement of the curter; and c, steps for recovering tunneling after replacing the cutter are as follows: (1) dismantling the blanking plate, closing the door of the soil storehouse and injecting inert serous fluid into the soil storehouse until soil pressure reaches the set soil pressure; and (2) recovering the tunneling. By utilizing the method, timely and effective replacement of worn cutters in the sand-pebble layer can be realized and the operation is relatively simple and safe.

The present invention relates to backward draining system of face plate rock-fill dam body and its construction process, and aims at preventing backward water head caused damage of mat base and concrete plate seam. During construction of the dam, backward draining system is set, which includes water collecting body comprising pebbles in certain volume set inside the dam and in certain distance to the toe board, and water draining pipe connected between the toe board and the water collecting body and comprising vertical section of pored steel pipe, inclined pipe in the toe board and horizontal pipe in between. After finishing the construction, the water draining pipe is blocked. The present invention is used in the concrete face plate dam and asphalt concrete face plate dam engineering under construction.

The invention relates to a plugging-resistant freeze-resistant pervious concrete pavement brick. The plugging-resistant freeze-resistant pervious concrete pavement brick mainly comprises a plugging-resistant surface layer and a base layer, wherein the plugging-resistant surface layer is positioned on the base layer and consists of the following materials components in a compounding ratio and in parts by weight: 80-100 parts of cement, 310-360 parts of coarse sand, 7-11 parts of silica fume, 6-10 parts of VAE emulsion, 25-35 parts of water and 0.8-1.2 parts of a water reducing agent; the base layer consists of the following material components in the compounding ratio and in parts by weight: 90-110 parts of cement, 220-260 parts of pebbles, 70-110 parts of coarse sand, 8-12 parts of silica fume, 8-12 parts of VAE emulsion, 0.1-0.4 of polyethylene fibers, 25-35 parts of water and 0.8-1.2 parts of a water reducing agent. New material components are designed, so that the concrete brick provided by the invention has good pervious freeze-thaw resistant effects and is not easy to plug.

The present invention provides a deep-water construction method of a bridge at water pebble soil and argillaceous sandstone areas and an auxiliary working platform. A foundation adopts two foundations of steel pipe piles and anchor piles. The steel pipe piles are formed through inserting and piling by a pile hammer, and borne in pebble soil and argillaceous sandstone, pilebolck distributive girders of the steel pipe piles adopt profile steel, a main longitudinal girder is a Bailey girder or a girder at other types, the profile steel is arranged on the main longitudinal girder, a faceplate adopts a riffled steel plate, a protective railing is arranged on the edge, and thus a combined type working platform on which mechanical equipment of large gantry cranes, crawler cranes and the like can walk is formed. According to the invention, the steel pipe piles and the anchor piles are mutually matched, the steel pipe piles are mainly used for bearing the load on the platform, the anchor piles are mainly used for bearing water flowing force, a trestle stand and a drilled platform are integrated, the trestle stand and the platform can be propelled synchronously towards the river from the shore side during construction, so that the combined type working platform is quickly formed, materials, equipment and the personnel pass the combined type working platform, and thus multiple processes of construction of pile foundations and pile caps of deep-water foundations of large bridges at deep-water pebble soil and argillaceous sandstone areas of rivers, lakes and seas can be performed.

The invention discloses a water-rich sandy cobble stratum shield short-range underneath pass rigid bridge construction method which mainly includes the two steps of abutment grouting and pre-reinforcement and a shield tunneling technology measure. After abutment grouting and pre-reinforcement are finished, a sleeve valve pipe in an abutment is buried and constructed, and after sleeve valve pipe burying, shield construction is performed. According to the method, a related pre-reinforcement method is provided for a shield tunneling machine to pass underneath a bridge and a river in future, shield tunneling machine excavation parameters are provided, the method is economical and reasonable, operation is easy, cost is low, and technical parameters are provided for similar engineering in future.

A container for underwater placement on a sea, lake or river bottom. The container has openings in the sides, top and bottom and is filled with ballast of large boulders, cobble, crushed coral, cast concrete modules or other materials. The openings allow water and water currents, as well as marine organisms, to pass freely therethrough. Over time, a wide assortment of marine organisms infiltrate and colonize the nooks, crevices and cavities of the ballast, thus utilizing the habitat as they would an artificial reef. One or more hitch points are provided on the container for attaching mooring lines for ships, boats, floating wind turbines or other floating structures, thereby allowing the artificial reef to anchor such structures.

The invention discloses a method for casting nodular cast iron with a large section. The carbon content and the number of graphite pebbles per unit area are increased, so that the problem of fragmented graphite can be solved; the ideal carbon content is 4.1 to 4.3 percent; the silicon content is 2.0 to 2.2 percent; instantaneous inoculation is added on the basis of the original inoculation, namely during pouring, pouring cup inoculation is performed by using 1 percent of No.75 silicon powder with the granularity of between 0.3 and 1mm; generally, common rare-earth-magnesium-silicon-iron alloy is used as nodulizer and has a wide application range, but during production of the nodular cast iron with the large section, decaying spheroidisation resistance and distortion-invariant capacity of the graphite are low; and in order to overcome the disadvantages, the improved scheme of D-2 heavy rare earth nodulizer is adopted, and during spheroidization, the common rare-earth-magnesium-silicon-iron alloy accounts for 60 percent and the D-2 heavy rare earth nodulizer accounts for 40 percent based on the total weight of the nodular cast iron. The method has the advantages that: the problems of graphite distortion, a small number of spheroidal graphite and fragmented graphite are solved, so that the spheroidization of the central position of a casting is improved and the requirement of a template of an injection molding machine can be fully met.

The invention provides a permeable overflow dam combining functions of water level control and water purification, which comprises a solid dam body, a permeable dam body and water purifying media arranged in the permeable dam body, wherein the solid dam body is in a water-proof solid structure formed by casting concrete or reinforced concrete, and the height of the dam top of the solid dam body is the height of a higher water level in the lowest water level required by a river channel ecological system or the lowest water level required by river channel landscape environment; the permeable dam body is a lattice fence formed by casting concrete or reinforced concrete, a plurality of reinforced concrete partition walls are cast in the permeable dam body along a river width direction, a plurality of no-fines concrete walls are cast in the permeable dam body along a water flow direction, and the height of the dam top of the permeable dam body is higher than the designed normal water level of the overflow dam and is lower than that of the designed flood level of a river channel; and the water purifying media are pebbles, vermiculites, zeolites or spherical water purifying fillers. The invention not only can meet the requirement of raising the water level without influencing the flood discharge capacity but also can effectively purify water and improve river water environment quality.

The invention discloses a method for preparing alkali-activated coal gangue concrete from coal gangue mainly and belongs to the method applied to preparation of alkali-activated coal gangue concrete.According to the method, coal gangue blocks are broken into coal gangue particles with different grain size range, the coal gangue particles are used as gel materials, fine aggregates and rough aggregates respectively for preparing the alkali-activated coal gangue, and thus, consumption of non-renewable resources such as cement, sand and pebbles is omitted. Besides, the alkali-activated coal gangue concrete is featured by early strength and high strength, and has functions of shortening maintenance time, accelerating construction progress and reducing construction cost, can substitute for cement concrete, can not only avoid the environmental pollution caused by accumulation of a great amount of industrial solid wastes, but weaken dependency on cement and reduce consumption of the non-renewable resources, and has a great significance for China, the country has the problems of energy deficiency and severe environmental pollution.

A roof lawn used as the putting green of golf is sequentrally from bottom to top composed of a water-proof layer consisting of two building fibre net layers and one plastic film layer between said two fibre net layers, a water draining layer made of pebbles, a filter layer made of non-woven cloth, a soil matrix layer made of sand and organic fertilizer, and a lawn layer.

The invention discloses a roadbed soil displacement field and seepage field visualized testing apparatus under seepage moving vehicle dynamic load and a testing method thereof. The visualized testingapparatus comprises a seepage system, a roadbed simulation system, a load simulation system and a data acquisition system, and the seepage system is composed of a water supply case and a feed pipe; the feed pipe is connected with the bottom of a test model groove, multilayer pebbles are sprayed in the test model groove, and saturated and transparent soil is placed on the multilayer pebbles to simulate the roadbed fill soil; an engineering pile is buried in the saturated and transparent soil to simulate the piled roadbed; the load simulation system is composed of a support, a hydraulic oil pumpapparatus, a servo actuating arm, a roller, and a computer; and the data acquisition system is composed of a laser, a CCD camera and a computer. The technology can realize the visualized observationof the roadbed soil displacement field and the soil displacement field under the seepage moving vehicle dynamic load, and the testing apparatus has the advantages of simpleness, economic performance and high feasibility.

The invention relates to a method for forming an ecological embankment of vertical revetment live branch bundles. The method is characterized in that a row of wood piles or concrete imitative wood piles is driven along the bankside toe line of a riverway, twigs of willows, alders or black poplars are bunched into live branch bundles, gravels, pebbles, haydites and zeolites are filled in the live branch bundles, and the live branch bundles are arranged between the wood piles or the concrete imitative wood piles and the bankside of the riverway parallel to the riverbank. Therefore, the problems of renovating vertical revetment waterfront plants along the riverway and constructing an ecological embankment are solved. The live branches used by the embankment have good tolerance to water logging, thereby quickly budding and forming a vegetation system, creating good living environment for riverbank living things, and beautifying riverbank landscape, and on the other side, plants, purifying filter materials and surface-attached microorganisms have better purifying effects on pollutant and improve the water quality of the riverway. The embankment is very convenient to construct, maintain and manage, and has better transformation and application prospects of the ecological renovation of the vertical revetment.

The invention is a saline soil region strongly ramming and drainage pile foundation processing method, called PDP strongly ramming method for short, comprising the steps of: firstly making pile machine in position, then starting the pile machine to make pile pipe vertically sink from the set position to the designed depth, casting gravels, screes, rough sand and other rough particular pile materials into the sunk pipe; after completing casting materials and drawing the pipe to form drainage pile; constructing other drainage piles; laying a layer of rough particular materials in the covering position of each drainage pile on the surface of the processed region to form a drainage surface layer; making click strong ramming on the drainage surface layer to form rammed pits; when the ground water in the foundation seeps into each drainage piles and converges through the drainage surface layer into the rammed pits, pumping out the ground water from the rammed pits to the outside of the construction site; and finally backfilling the rammed pits and leveling. And it can save foundation processing expenses, improve construction quality and raise working efficiency.