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30results about How to "Guaranteed waterproof effect" patented technology

Construction method of earth cabin back filling and cabin entering operation during earth pressure shielding

ActiveCN102536253AIncrease the permeability coefficientDoes not have air pressure operating conditionsUnderground chambersTunnel liningHigh intensityOperability
The invention discloses a construction method of earth cabin back filling and cabin entering operation during earth pressure shielding. The construction method comprises the following steps: (1) injecting bentonite slurry outside the casing of a shield machine; (2) injecting polyurethane outside the body of a shield to form a seal ring; (3) injecting two-liquid slurry outside a tube piece to form a seal ring; (4) replacing muck in an earth cabin with bentonite, and carrying out muck replacement through the cooperation of the a bentonite injection system and a spiral conveyer; (5) carrying out pressure injecting on low, middle and high-strength cement bentonite mortar slurry, and allowing the bentonite slurry in the earth cabin to form cumulates with certain strength; (6) injecting slurry to a cutting ring of the shield machine and the top of a cutter head; (7) carrying out cabin entering operation by constructors; and (8) closing an earth cabin door after cutter replacement is completed, injecting and back-filling bentonite to the earth cabin to establish an earth pressure balanced mode to restore tunneling. The construction method disclosed the invention breaks through the difficulty of cabin entering operation below a special unstable formation and the difficulty of cabin entering operation under a building during shielding, and has the characteristics of high efficiency, strong operability and the like.
Owner:GUANGZHOU RAIL TRANSIT CONSTR SUPERVISION CO LTD

Strongly-permeable stratum deep foundation pit bottom sealing water stopping structure and construction method thereof

The invention discloses a strongly-permeable stratum deep foundation pit bottom sealing water stopping structure, which comprises diaphragm walls, underwater plain concrete boards, reinforced concrete partition walls, uplift piles and inner supports, wherein the diaphragm walls are arranged around the foundation pit througgh casting; the inner supports support the diaphragm walls; the reinforced concrete partition walls are formed on the foundation pit below the diaphragm walls through casting; the reinforced concrete partition walls and the diaphragm walls of each two faces form a casting block in a surrounding mode on the foundation base; the uplift piles are casted on the foundation base inside the block; each underwater plain concrete board is formed through casting at each block opening formed by the reinforced concrete partition walls and the diaphragm walls in a surrounding mode; and the uplift piles are firmly embedded in the underwater plain concrete boards. The underwater plain concrete boards enhance overall strength and ridigity of the foundation pit bottom, dual effects of reinforced pit bottom and permeation prevention are provided, influences on stability of the pit bottom by high pressure water and raised pit bottom caused by excavation of the foundation pit can be effectively solved, and lateral displacement of the pit wall and settlement deformation of the surrounding enviornment can be well reduced.
Owner:RANKEN RAILWAY CONSTR GROUP +1

Open pit mine inner dump aquifer communication method

The invention discloses an open pit mine inner dump aquifer communication method. The open pit mine inner dump aquifer communication method comprises the work procedures of plugging an original aquifer, building an artificial water-resisting layer, building an artificial aquifer, dredging the aquifer, conducting artificial water replenishing and the like. According to the open pit mine inner dumpaquifer communication method, the original aquifer is plugged with degradable plastics, water resource loss is reduced, and the safety of a pit is guaranteed; construction raw materials of the artificial water-resisting layer come from the mine lot, the construction difficulty is low, cost is low, and the waterproof effect is guaranteed; the aquifer adopts the manner that the middle part bulges, and it is avoided that natural settling of the inner dump causes the aquifer to be compacted, sink and even be blocked; the artificial aquifer is arranged into multiple strips, a water retaining wall is built to reduce the influence of the internal water pressure on the stability of the inner dump, artificial water replenishing according to regions in a later period can be achieved, and water cannot flow into the pit; the artificial water replenishing manner is adopted to accelerate communication between the artificial aquifer and the original aquifer of the inner dump, underground water circulation in the mine lot is guaranteed, pit water can be utilized, and pit water waste is reduced.
Owner:CHINA UNIV OF MINING & TECH

Method for constructing external walls

The invention discloses a method for constructing external walls. The method includes steps of 1), arranging pouring formworks on two sides of each shear wall to be poured, and integrally connecting the pouring formworks on the two sides of each shear wall with each other by opposite pull lead screws; 2), pouring concrete between the formworks on the two sides of each shear wall, allowing the poured concrete to be formed to obtain the shear walls, detaching the opposite pull lead screws and the formworks on the two sides of each shear wall and allowing indoor and outdoor through holes to be formed in certain positions of the shear walls; 3), plugging opening ends of the outsides of the holes by rubber plugs; 4), injecting cement mortar or foaming agents in the holes from opening ends of the insides of the holes and enabling the holes to be compactly filled with the cement mortar or the foaming agents; 5), laying bricks to form brick walls between the adjacent shear walls and forming the integral external walls by the brick walls and the shear walls in an enclosed manner; 6), plastering internal wall surfaces of the external walls; 7), plastering external wall surfaces of the external walls. The opposite pull lead screws are detached from the certain positions of the shear walls. The method has the advantages that a process for plugging the holes is easy to operate and can be monitored, waterproof effects can be effectively guaranteed, the later maintenance cost can be saved, and the method has an excellent popularization and application prospect.
Owner:CHINA METALLURGICAL CONSTR ENG GRP

One-hole multi-pore-water-pressure-gauge burying structure and method

PendingCN108951595ATo achieve up and down connectivityOvercoming the problem of lowering to the predetermined depthIn situ soil foundationVertical planePore water pressure
The invention discloses a one-hole multi-pore-water-pressure-gauge burying method. According to the one-hole multi-pore-water-pressure-gauge burying method, embedded pipes with the diameter smaller than that of a drilled hole or a buried sleeve pipe at a preset position of a soil layer to be measured are arranged in advance, water holes are formed in the side wall of each embedded pipe, pore waterpressure gauges are arranged in the embedded pipes, and the embedded pipes are filled with fine sand; the sealed embedded pore water pressure gauges simulating the soil layers are formed, the embedded pipes are placed at preset positions, the outer layers of the embedded pipes are filled with clay, so that hole seal layers are formed, and then fine sand is used for filling; and then burying of the multiple pore water pressure gauges at different depths is completed. In this way, the situation that since soil conditions may change greatly, an obtained testing result cannot accurately reflect the pore water pressure change law at different depths within the same vertical plane can be effectively avoided, it is effectively avoided that the pore water pressure gauges vertically communicate, it is guaranteed that water seepage of a sand cushion around a probe of each pore water pressure gauge is fluent, the changes of the pore water pressures at different depths show obvious difference, and the testing result is accurate.
Owner:CHANGAN UNIV

Underground water obstruction device building method and underground water obstruction device

The invention provides an underground water obstruction device building method and an underground water obstruction device. The underground water obstruction device building method comprises the following steps that water isolation membranes are adhered to the ground to obtain a standby impermeable membrane, the sealing performance of the impermeable membrane is tested, the impermeable membrane isinclined at a set angle and is coiled into a reel shape after passing the sealing performance test, an impermeable membrane component in the reel shape is unfolded to form a smooth impermeable membrane through a slideway component arranged on a cut, and multiple smooth impermeable membranes form a whole in a sealing connection manner. In the underground water obstruction device building method, as the thickness of an adhesion position of each water isolation membrane is two times the thickness of the rest position, influence on the smoothness by coiling or unfolding can be avoided by enablingthe standby impermeable membrane to be inclined at a certain angle; and by adhering each water isolation membrane in a width direction on the ground surface, each water isolation membrane with an enough width and an enough length is formed, and the water isolation effect of the underground water obstruction device is fully ensured.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Construction method for tunnel bridge construction joint sealing system

The invention relates to a construction method for a tunnel bridge construction joint sealing system. The construction method comprises the steps that two U-shaped grooves are formed in the side wall of a frame bridge and the front end face and the rear end face of a bottom plate; a water-swelling sealing strip is installed in each U-shaped groove; the side wall and the front end face and the rear end face of the bottom plate with the water-swelling sealing strips installed are painted with a concrete adhesion agent; concrete is poured into an approach bridge formwork, and it is needed to be noted that strengthening ramming is conducted on joints in the ramming process. The construction method for the tunnel bridge construction joint sealing system has the advantages that the adhesion agent is transparent liquid, and thus the quality and the attractiveness of engineering are hardly influenced. Compared with cement which is permeable, the adhesion agent is waterproof, capable of being crystallized, and better in waterproof effect; the water-swelling sealing strip can swell with water in a narrow space and can fully prevent underground water from seeping into concrete. A multiple water blocking system can be formed, and the waterproof effect can be effectively ensured. The waterproof quality of engineering can be ensured while the cost is reduced.
Owner:CHINA RAILWAY SIXTH GRP TIANJIN RAILWAY CONSTR +1

Dewatering structure for preventing underground structure from floating upwards and construction method thereof

PendingCN113718808ASimple constructionAnti-floating direct and effectiveProtective foundationTube wellWater pipe
The invention discloses a dewatering structure for preventing an underground structure from floating upwards and a construction method thereof. The dewatering structure comprises a water drain pipe, a water stop plate and a gravel filter layer; the drain pipe is arranged at the bottom of a water-collecting well, and the lower end of the drain pipe extends into a soil body below a cushion layer; water drain hole channels are formed in the side wall of the water drain pipe and located in the soil body at intervals; a pipeline of the water drain pipe is filled with an expansive concrete core, and the top face of the expansive concrete core is lower than the top end of the water drain pipe; a plugging plate is arranged in the pipeline of the water drain pipe and located on the top face of the expansive concrete core; the water drain pipe above the plugging plate is filled with a sealant; the water stop plate is annular and is welded to the outer side wall of the water drain pipe; the periphery of the water drain pipe is filled with the gravel filtering layer, and the top face of the gravel filtering layer is flush with the bottom face of the cushion layer; and the outer side of the gravel filtering layer is wrapped with geotechnical cloth. The technical problems that a traditional bottom plate reserved dewatering pipe well is complex in construction procedure, leakage is prone to occurring in the later period, and the dewatering well is damaged or stops running in the construction period of a basement main body structure are solved.
Owner:新城控股集团实业发展有限公司

A retaining wall and construction method applied to the reinforcement of flood control dikes in flood control projects

The invention discloses a retaining wall applied to reinforcement of a flood protection engineering floodwall and a construction method, and solves the problem of weakening of the strength of a floodwall caused by formation of recesses due to scouring of a foundation by easy permeation of water into the foundation from joints due to closing of the joints between stones by concrete, wherein commonfloodwalls are built by the stones, and the floodwall is reinforced through building of the retaining wall in the prior art. A frame structure consisting of multiple longitudinal frames and transverseframes is used as the foundation; a first baffle plate, a second baffle plate and a clamping plate are provided; interval space for casting the concrete is respectively formed among the first baffleplate, the second baffle plate and the clamping plate; the clamping plate comprises a concrete plate basal body, and waterproof cloth for wrapping the concrete plate basal body; and the reinforced floodwall built through the retaining wall has the advantages of improvement of the tightness of the retaining wall, difficult scouring of the foundation by water entering the back surface of the retaining wall and improvement of the strength of the floodwall.
Owner:SHENZHEN DONGSHEN ENG CO LTD

Waterproof band, waterproof structure between prefabricated parts and construction method of waterproof structure

The invention provides a waterproof band, a waterproof structure between prefabricated parts and a construction method. The waterproof band comprises a plate band, wherein a band end which is thickerthan the plate band is arranged on the end of the plate band. The waterproof structure comprises two adjacent prefabricated parts, wherein reserved channels are formed in the prefabricated parts, thewaterproof band is arranged between the two prefabricated parts, and the band ends of the waterproof band are arranged in the reserved channels, so that the waterproof band has a waterproof function in a gap between the two prefabricated parts. The construction method comprises the step of arranging the band end on the end of the waterproof band in the reserved channels of the prefabricated partsafter the prefabricated parts are assembled and constructed so as to form the waterproof structure in the gap between the two adjacent prefabricated parts. The waterproof structure has the advantagesthat the problems of difficulty in sealing and water isolation and waterproof construction between the two adjacent prefabricated parts are solved, the gap between the two adjacent prefabricated partsis blocked through the waterproof band, the waterproof effect between the two adjacent prefabricated parts is effectively guaranteed, the structure is simple, and construction is convenient.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Construction method of unsealed concrete combined cofferdam under rock geological conditions

The invention discloses a modular coffer construction method for concrete without subsealing in the geologic condition of stratum: Firstly, a strutting piece and a guide frame are welded all around the outside of a steel barrel of a prepared cushion cap; Secondly, a lock steel pipe pile is downwards inserted along the guide frame, and the bottom of the lock steel pipe pile should reach the surface of a strong weathered rock; Thirdly, the inner of the steel pipe pile is downwards excavate vortically by a rotary drill rig, after deepening to the inner of a weak weathered rock, a drilled pile on the bottom of the steel pipe pile is constructed; Fourthly, after finishing all the drilled piles on the bottom of the steel pipe pile, a closed coffer is formed; Then, the river water in the coffer is drawn out and a support is installed in the coffer; After that, a submerged pump is arranged in coffer to draw out the percolating water, and then a foundation cleaning is dug by a digger to the bottom of the cushion cap; Finally, the concrete cushion is poured to the bottom of the cushion cap, and the cushion cap construction can be finished in the waterless and dry environment. The construction method has the advantages that the stratum does not need to be blown up under the water, the construction difficulties and amount are reduced, the whole stability of the coffer is strong, and the construction efficiency is high.
Owner:中铁七局集团有限公司勘测设计研究院

Construction method of earth cabin back filling and cabin entering operation during earth pressure shielding

ActiveCN102536253BIncrease the permeability coefficientDoes not have air pressure operating conditionsUnderground chambersTunnel liningOperabilitySlurry
The invention discloses a construction method of earth cabin back filling and cabin entering operation during earth pressure shielding. The construction method comprises the following steps: (1) injecting bentonite slurry outside the casing of a shield machine; (2) injecting polyurethane outside the body of a shield to form a seal ring; (3) injecting two-liquid slurry outside a tube piece to form a seal ring; (4) replacing muck in an earth cabin with bentonite, and carrying out muck replacement through the cooperation of the a bentonite injection system and a spiral conveyer; (5) carrying out pressure injecting on low, middle and high-strength cement bentonite mortar slurry, and allowing the bentonite slurry in the earth cabin to form cumulates with certain strength; (6) injecting slurry to a cutting ring of the shield machine and the top of a cutter head; (7) carrying out cabin entering operation by constructors; and (8) closing an earth cabin door after cutter replacement is completed, injecting and back-filling bentonite to the earth cabin to establish an earth pressure balanced mode to restore tunneling. The construction method disclosed the invention breaks through the difficulty of cabin entering operation below a special unstable formation and the difficulty of cabin entering operation under a building during shielding, and has the characteristics of high efficiency, strong operability and the like.
Owner:GUANGZHOU RAIL TRANSIT CONSTR SUPERVISION CO LTD

Strip mine dump based on platform catchment planting pits

The invention discloses a strip mine dumping site based on platform catchment planting pits. A thick water-resisting layer is laid in the final construction forming stage of each step of the strip mine dumping site; a planting pit is dug in the thick water-resisting layer through a double-layer round sleeve; after the double-layer round sleeve is inserted into the thick water-resisting layer, the inner-layer sleeve and a water-resisting layer material in the inner-layer sleeve are taken out together, and the outer-layer sleeve is left in the thick water-resisting layer; paving a water storage layer at the bottom of the planting pit; after the water storage layer is laid, a soil cylinder is placed in the center in the outer sleeve; a gap is formed between the outer wall of the soil cylinder and the inner wall of the outer sleeve; the gap is filled with broken stones to form a water guide ring; and an evaporation retardant layer is laid on the upper surfaces of the thick water-resisting layer and the planting pits. The water storage layer and the water guide ring gather surface rainfall, and a local water-rich environment is provided for vegetation planting; most of surface rainfall enters the soil of the planting pit through the water guide ring, and soil salinization caused by migration and evaporation of fine particles in the soil due to natural infiltration of water is avoided.
Owner:CHINA UNIV OF MINING & TECH

Bottom-sealing water-stop structure for deep foundation pit in highly permeable stratum and construction method thereof

The invention discloses a bottom-sealing water-stop structure for a deep foundation pit in a strong water-permeable stratum, which comprises an underground continuous wall, an underwater plain concrete board, a reinforced concrete partition wall, an uplift pile and an inner support, and the underground continuous wall is arranged around the foundation pit by pouring , the internal support is supported on the underground diaphragm wall, and the foundation pit under the underground diaphragm wall is poured to form a reinforced concrete partition wall, and the reinforced concrete partition wall and the underground diaphragm wall on each two sides are enclosed at the base to form a pouring For the warehouse, uplift piles are poured under the base of the warehouse, and each warehouse opening enclosed by the reinforced concrete partition wall and the underground diaphragm wall is poured to form an underwater plain concrete slab, and the above-mentioned uplift piles are embedded in the underwater plain Inside the concrete slab. The underwater plain concrete slab increases the overall strength and stiffness of the pit bottom, and has dual functions of pit bottom reinforcement and anti-seepage. It can better reduce the lateral displacement of the pit wall and the settlement deformation of the surrounding environment.
Owner:RANKEN RAILWAY CONSTR GROUP +1

Outdoor charging pile

The invention discloses an outdoor charging pile. The outdoor charging pile comprises a cabinet body, the cabinet body comprises an air inlet assembly and an air outlet assembly, and the air inlet assembly and the air outlet assembly each comprise a fairing, a ventilation movable door, a waterproof shutter and a row of waterproof silencing pieces. The waterproof shutters and the waterproof silencing sheets are arranged in the fairing, the row of waterproof silencing sheets are positioned behind the waterproof shutter, the waterproof silencing pieces and the waterproof shutters are all inclinedupwards, and the inclination angle of the waterproof silencing sheet is greater than that of the waterproof shutter, wherein the waterproof shutter can achieve the waterproof effect. Moreover, the waterproof silencing sheet is positioned behind the waterproof shutter, while the silencing effect is realized, the waterproof effect can be further improved with the inclination angle of the waterproofsilencing sheet larger than that of the waterproof shutter, so that the waterproof effect is guaranteed while noise is reduced, the shell protection grade IP55 is met, the noise of the system is reduced, and the cabinet meets the requirement that the noise is smaller than 65 dB.
Owner:SHENZHEN SINEXCEL ELECTRIC

Groundwater blocking device construction method and groundwater blocking device

The invention provides an underground water obstruction device building method and an underground water obstruction device. The underground water obstruction device building method comprises the following steps that water isolation membranes are adhered to the ground to obtain a standby impermeable membrane, the sealing performance of the impermeable membrane is tested, the impermeable membrane isinclined at a set angle and is coiled into a reel shape after passing the sealing performance test, an impermeable membrane component in the reel shape is unfolded to form a smooth impermeable membrane through a slideway component arranged on a cut, and multiple smooth impermeable membranes form a whole in a sealing connection manner. In the underground water obstruction device building method, as the thickness of an adhesion position of each water isolation membrane is two times the thickness of the rest position, influence on the smoothness by coiling or unfolding can be avoided by enablingthe standby impermeable membrane to be inclined at a certain angle; and by adhering each water isolation membrane in a width direction on the ground surface, each water isolation membrane with an enough width and an enough length is formed, and the water isolation effect of the underground water obstruction device is fully ensured.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

A kind of open-pit mine dump aquifer penetration method

The invention discloses a method for penetrating an aquifer in an open-pit mine dump, which comprises the steps of blocking the original aquifer, rebuilding an artificial water-resisting layer, recreating the artificial aquifer, dredging the aquifer, artificially replenishing water, and the like. In the present invention, degradable plastics are used to block the original aquifer, which reduces the loss of water resources and ensures the safety of the mine pit; the raw materials for the construction of the artificial water-resisting layer come from the mining area, the construction difficulty is small, the cost is low, and the water-repelling effect is guaranteed; The aquifer adopts the form of an uplift in the middle to avoid the natural settlement of the inner dump site causing the aquifer to be compacted and subsidence or even blocked; the artificial aquifer is arranged in strips, and the construction of retaining walls reduces the impact of internal water pressure on the stability of the inner dump site. Realize artificial water replenishment in sub-regions in the later stage without letting water flow into the pit; adopt artificial water replenishment to accelerate the connection between the artificial aquifer and the original aquifer in the inner dump site, ensure the circulation of groundwater in the mining area, and use the pit water to reduce pit water waste.
Owner:CHINA UNIV OF MINING & TECH

A waterproof switch with intermittent heat dissipation

The invention discloses a waterproof switch with intermittent heat dissipation, belonging to the field of switches. A waterproof switch with intermittent heat dissipation comprises a switch main body, a pair of circulating water tanks are fixedly connected to the side walls of the switch main body, and an air cooling device is fixedly connected to the top of the switch main body. The upper and lower ends of a pair of circulating water tanks are respectively connected with a heat dissipation pipe and a heat conduction pipe. The heat dissipation pipe and the heat conduction pipe respectively pass through the switch main body and the air cooling box. A partition board is connected between the switch main body and the air cooling box. There are a plurality of evenly distributed ventilation holes drilled on the upper part, a floating seal and a sealing plate are installed in the partition plate, a water retaining column is inserted into the sealing plate, one end of the water retaining column is fixedly connected with the floating sealing bag, and the other end of the water retaining column is inserted into the partition inside the board. When the switch is overheated, the width of the ventilation hole of the device can be automatically changed, the change of the ventilation volume of the switch can be realized, and the water resistance of the device can be ensured after the width of the ventilation hole is changed.
Owner:深圳市易锐科通信技术有限公司
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