291 results about "Tube well" patented technology

To provide a deep well filtering structure that effectively prevents the subsidence and collapse of the well wall. [Solution] The deep well filtration structure of this invention includes a surface loess layer 1 and a well channel 7, with a concrete well side 8 poured onto the surface of the surface loess layer, a reinforced concrete permeable pipe and a reinforced concrete solid pipe 10 installed in sequence inside the well channel, a well pipe pallet 6 placed at the bottom end of the well channel, and below the surface loess layer, in sequence, a gravel-mixed loess layer 2, a gravel layer 3, a crushed stone-mixed loess layer 4 and an underground loess layer 5, and a clay ball-filled sealing layer 9 filled between the surface loess layer, the gravel-mixed loess layer and the reinforced concrete solid pipe.

The invention discloses a tunnel base soil body active drainage system device and method based on drainage nails, and relates to the technical field of tunnel construction. The device comprises capillary adsorption tube wells, side ditches and a pumping drainage device, the capillary adsorption tube wells are arranged on the two sides of the bottom of a tunnel, and the multiple capillary adsorption tube wells are arranged in the longitudinal direction of the tunnel; each capillary adsorption tube well is arranged in the vertical direction and extends into a base soil body below a tunnel bottom, each capillary adsorption tube well comprises a waterproof tube section, a water seepage tube section and a bottom precipitation tube section which are sequentially arranged, and every two adjacent tube sections are connected through a plugging connector. The side ditches are arranged on the two sides of the railway ballast and used for gathering and discharging water in the capillary adsorption tube wells. And the pumping and draining device is used for pumping and draining water in the capillary adsorption tube well into the side ditch. A natural filter layer can be formed under the capillary action of the water seepage pipe section, silt is effectively prevented from inrush, and therefore the method is suitable for long-term water pumping and drainage construction in the heavy haul railway base operation period, and frequent pipe well cleaning does not need to be carried out.

The invention discloses a parallel computing simulation method for thermal exploitation of a buried pipe well group in a geothermal reservoir, which comprises the following steps of: dispersing a grid volume unit of a buried pipe by adopting a parallel finite element unit method, and simplifying the buried pipe and circulating fluid in the pipe into a one-dimensional linear finite element unit; constructing a plurality of pipeline flow models arranged in an array, and combining the in-pipe one-dimensional linear units and the out-pipe three-dimensional volume units to obtain a well group type pipeline flow geometric model; a parallel finite element unit method is adopted to be combined with a non-isothermal pipeline flow physical field, an underground water seepage physical field and a porous medium heat transfer physical field to conduct multi-physical-field coupling, and a well group type pipeline flow numerical model is obtained; fluid flow and convective heat transfer in the buried pipe and pipe wall heat conduction are solved in a combined mode; and performing factor sensitivity analysis by changing different thermophysical parameters of the rock-soil body and heat exchange characteristic factors of the buried pipe well group. The invention provides a new method for researching fluid flowing and heat transfer behaviors of the buried pipe well group, and provides a new idea for optimal design and efficient simulation of thermal exploitation of the buried pipe well group in a geothermal reservoir.

The invention relates to the technical field of ground source heat pumps, and discloses a buried pipe type heat exchanger temperature distribution determining method which is based on a U-shaped buried pipe heat exchange system and comprises the steps that an equilibrium equation is established, and initial conditions and boundary conditions are set; calculating thermal resistance of each part according to thermophysical parameters of rock soil and a system; determining an initial drilling wall temperature distribution and an initial fluid temperature distribution before the system begins to operate; determining the heat flux density of the rock soil converged outside the well in each small section of the U-shaped buried pipe; establishing a line source model equation set, and calculating drilling wall temperature distribution in a system operation process; well wall temperature distribution in the system operation process is substituted into the balance equation, and fluid temperature distribution and heat exchange amount in the system operation process are obtained; and performing cycle calculation according to the cycle index and the operation period. According to the method, the ground heat exchanger model is established through the virtual heat source method, the temperature distribution condition of rock soil and fluid in the well in the operation cycle is obtained, and the thermal behavior of the tube well in the drilled well is predicted.

The gravel geology pit-in-pit dewatering construction method comprises the following steps that a foundation pit dewatering tube well is excavated and arranged on the side edge of a large foundation pit, and the water level is lowered to the preset elevation; a local ultra-deep position dewatering well with the preset depth is excavated and arranged on the side edge of the pit in the pit, and a dewatering well protection cage formed by binding a reinforcing steel bar structure in a well pipe shape and densely covering a steel wire net is arranged; a submersible pump is put into the precipitation well protection cage, and the submersible pump is started for pit-in-pit precipitation; keeping rainfall, and carrying out formwork construction of a concrete cushion layer in the pit; and after the concrete cushion layer of the pit-in-pit reaches the strength, form removal is conducted, the submersible pump is taken out, the dewatering well at the local ultra-deep position is backfilled, and cushion layer construction of the large foundation pit is conducted. According to the construction method, formwork erecting construction of the concrete cushion layer in the pit is firstly carried out, then the dewatering well at the local ultra-deep position is backfilled, and then cushion layer construction of the large foundation pit is carried out, so that the integrity is guaranteed; by means of the dewatering well protection cage, the dewatering effect is guaranteed, cost is reduced, the dewatering well protection cage is denser after backfilling, and the structural strength is improved.

A method for simulating cross-seasonal heat storage of a buried pipe well group in a geothermal reservoir is characterized in that hot water and cold water are respectively injected in different seasons by arranging different injection ports in a countercurrent cross injection mode, so that a relatively balanced temperature distribution pattern of a'hot area 'and a'cold area' is formed in a stratum, and the volume structure of a buried pipe is simplified into a line unit model; discretizing the pipeline area by adopting a finite element method; on the basis, initial temperature field distribution of soil and initial parameters of fluid in a buried pipeline unit are set, a proper numerical solution method is selected to solve the pipeline unit model, and the stability of the calculation process and the accuracy of the result are ensured through real-time monitoring; in order to further analyze the influence of underground water seepage on the system performance, an underground water seepage module is introduced, and the difference between summer refrigeration and winter heat supply effects under the seepage condition or not is compared and researched; the invention further comprises a system, equipment and a storage medium for implementing the method.

The utility model provides a fabricated tube well steel floor slab structure, and belongs to the field of building construction. According to the technical scheme, the floor slab comprises a floor slab unit and a plurality of positioning sleeves arranged on the floor slab unit, tube wells are arranged in the positioning sleeves, limiting hanging pieces are arranged between the tube wells and the floor slab unit, tube well limiting pieces are further arranged on the positioning sleeves, and hoisting assemblies are arranged at the tops of the tube wells in the positioning sleeves. The tube well steel floor slab structure has the advantages that the tube well steel floor slab structure is assembled and prefabricated, meanwhile, the prefabricated floor slabs and the adjacent prefabricated floor slabs are connected together to form a complete floor slab structure, quality improvement, efficiency improvement and construction period shortening are facilitated, the tube well is further limited through the tube well limiting pieces and the limiting hanging pieces, and the service life of the tube well is prolonged. Therefore, combined construction of the fabricated tube well floor and the fabricated floor structure is achieved, and the construction efficiency of the tube well is greatly improved.

The utility model relates to an embedded modularized toilet which comprises a mounting frame, a drainage system, a tube well, a top plate, a bottom plate and side plates, the top plate, the bottom plate and the side plates are arranged on the mounting frame, and the tube well penetrates through the top plate and the bottom plate. Electromechanical equipment is arranged in the top plate, a plurality of sewage ports and a plurality of purified water ports are formed in the side plates, and connectors are fixed in the sewage ports and the purified water ports in a sealed mode. The bottom plate comprises a reinforcing plate, a waterproof structure and a decorative plate which are sequentially connected, the side edge of the waterproof structure extends upwards by a set height, and a drainage groove is formed in the decorative plate. The drainage system comprises a water collecting tank, a water collecting pipe and a drainage pipe, the water collecting pipe is arranged in the tube well and communicated with the connector in the sewage port through the drainage pipe, the drainage pipe is arranged in the side plate and / or the waterproof structure, and the water collecting tank is arranged in the drainage groove. According to the embedded modular toilet, construction waste and damage to floors are reduced, and the construction period is shortened; the waterproof structure is an integrated structure and is not easy to age and leak water; the side plate drainage improves the utilization rate of the clear height space of the module.

The invention provides a coastal area foundation pit dewatering system and method, and belongs to the technical field of foundation pit dewatering, the coastal area foundation pit dewatering system comprises a foundation pit, a plurality of light well points, a deep tube well and an electroosmosis auxiliary module, and the light well points are annularly arranged in a shallow layer area on the periphery of the foundation pit; the deep tube well extends to a deep area from the ground; and a plurality of electro-osmosis auxiliary modules are arranged in the peripheral clay layer area of the foundation pit. The annularly-arranged light well points evenly intercept shallow underground water around the foundation pit, the deep pipe wells can rapidly reduce the deep underground water level, and the drainage problem of a low-permeability clay layer area is effectively solved through the synergistic effect of the arranged electro-osmosis auxiliary modules and the well points / pipe wells; the synchronous precipitation uniformity of the complex soil layer is improved, layered targeted precipitation design is adopted in a shallow area, a deep area and a clay layer area, and the overall precipitation efficiency is improved. According to the foundation pit dewatering system in the coastal area, the problem that in the prior art, in the environment with complex hydrogeological conditions, the dewatering efficiency of a single dewatering measure is low is solved.

The utility model discloses a device for preventing water leakage of a pipe opening of an electric power pipe well, and belongs to the technical field of water seepage prevention construction.The device comprises the electric power pipe well, an embedded pipe is embedded in the outer wall of one side of the electric power pipe well, a cable is arranged in the embedded pipe, and a well lid is placed at the top of the electric power pipe well; a limiting block is arranged at the position, below the well lid, in the electric tube well, and limiting grooves are symmetrically formed in the positions, on the two sides of the limiting block, of the inner wall of the electric tube well; according to the electric power tube well, the limiting groove is formed, the adjusting block and the limiting block are limited and fixed in the electric power tube well, then the well lid, the waterproof cover and the extrusion block can be sequentially connected to the connecting rod in a sleeving mode, the waterproof cover can be clamped to the top of the electric power tube well by screwing the fixing ring, and therefore the connecting position of the electric power tube well and the well lid is sealed; part of rainwater is prevented from flowing into the power tube well from a gap between the power tube well and the well lid, so that it is ensured that the cable is in a safe environment, and the cable is prevented from being damaged.

A method for simulating heat storage of a buried pipe well group in a geothermal reservoir adopts staggered arrangement to replace traditional sequential arrangement, so that the distance between buried pipes is more reasonable, heat interference is minimized, the volume shape of the buried pipes is simplified into a linear unit structure, pipeline volume units are dispersed by adopting a finite element method based on various theories, and the heat storage efficiency of the buried pipe well group is improved. The calculated amount is reduced; and fluid heat transfer characteristics in the pipeline are accurately captured. Then setting soil initial temperature field distribution and initial parameters of fluid in a buried pipeline unit, solving a pipeline unit model by adopting a proper numerical calculation method, and performing real-time monitoring to ensure that a calculation result is stable and accurate; factor sensitivity analysis is carried out by changing in-well parameters and operation parameters, the influence of rock-soil body thermophysical parameters and buried pipe heat exchange characteristic factors on the geothermal reservoir thermal exploitation efficiency is comprehensively researched, and a scientific basis is provided for optimal design and operation of a buried pipe well group. The invention further comprises a system, equipment and a storage medium for implementing the method.

The invention relates to the technical field of rock stratum fracturing monitoring, and discloses a hydraulic fracturing underground fluid monitoring method based on steel cased well electromagnetic exploration, a terminal and a readable storage medium. The method comprises the steps that waveform voltage is injected into a monitoring area to generate an excitation electric field; acquiring electric field data of a plurality of dominant measuring points, wherein the plurality of dominant measuring points are located in a set range of any steel cased well in the monitoring area; and generating a hydraulic fracturing underground fluid distribution model according to the electric field data. According to the method, the electric fields of the dominant measuring points around the steel cased well are obtained, due to the fact that ground electric field or magnetic field anomalies caused by underground resistivity changes mainly appear around the well mouth under the condition that the steel cased well exists, the anomalies caused by underground fracturing fluid can be more effectively captured through fewer receiving measuring points, the signal-to-noise ratio of data is high, and the accuracy of the data is improved. Therefore, the search efficiency is high, the operation is stable, and misleading by noise is not easy to occur.

The invention discloses an underground power tube well cable hole waterproof plugging structure, and relates to the technical field of underground power tube wells, the underground power tube well cable hole waterproof plugging structure comprises two half tube sleeves which can be folded, and each half tube sleeve comprises a straight tube and a circular truncated cone tube which are connected; the first plugging unit comprises a plurality of first plugging blocks which are distributed in a circumferential array mode, and the first plugging blocks are connected to the circular truncated cone pipe in a sliding mode; the second plugging unit comprises a plurality of first plugging blocks which are distributed in a circumferential array; according to the waterproof plugging structure for the cable hole of the underground power tube well, after the two half tube sleeves are jointed and inserted into a cable pipeline, the first plugging blocks and the second plugging blocks located at the narrow opening end of the circular truncated cone tube can be conveniently inserted into the cable pipeline; afterwards, the peripheral side faces of the first plugging blocks and the peripheral side faces of the second plugging blocks can be driven to abut against the inner wall of the cable pipeline in a sealed mode through an arranged transmission mechanism, so that sealing between the two half pipe sleeves which are folded and the cable pipeline is completed, and meanwhile the two half pipe sleeves can be rapidly installed in the cable pipeline.

The invention discloses a sand-avoiding anti-blocking gutter inlet device suitable for desert photovoltaic and wind power bases. Comprising a rain grate, a well body, a well chamber and a gutter inlet pipe, the structure is characterized in that: (1) the gutter inlet pipe is an upper sand-avoiding gutter inlet pipe which is arranged at the upper part of the side wall of the well body and can avoid desilting at the lower part of the well chamber; a sand blocking groove capable of blocking rain and sand from flowing into the well chamber is additionally formed in the outer wall of the well body; (3) the rain grate is a sand blocking and shielding type rain grate; (4) a hand-held well container is arranged in the well chamber, and a hand-held groove container is arranged in the sand blocking groove, so that wet sand, seedlings and grass are convenient to clean; and (5) a rat-proof and mosquito-repellent valve is arranged on the sand blocking groove. The invention has the advantages that: (1) wind sand and rain sand can be prevented from flowing into a well chamber and a rainwater pipe network to possibly cause waterlogging to erode power generation equipment; (2) the water collection effect can be improved; mice and mosquitoes can be prevented from going in and out of the well chamber to propagate and spread diseases. The sand-avoiding anti-blocking gutter inlet device serves as a starting part of a rainwater pipe network and is suitable for being used when rainwater collecting facilities are built and the rainwater pipe network is laid in desert photovoltaic and wind power bases.

The utility model discloses a tube well pipeline assembly type installation structure which comprises a plurality of tube well pipeline assembly units which are sequentially spliced in the vertical direction, and each tube well pipeline assembly unit comprises a supporting plate, a plurality of sleeves arranged on the supporting plate, a pipeline arranged in the sleeves, a pipe joint arranged at the end of the pipeline and a support fixedly arranged on the outer side of the pipeline. The support is fixedly connected with a building wall through a fastener. The tube well is assembled in a prefabricated manufacturing and on-site mounting mode, and is poured synchronously with a building main body, so that the construction period is short, the construction cost is reduced, the structural stability is high, the construction operation is convenient, and the practicability is high.

The invention provides a deep foundation pit dewatering and drainage construction method based on water level control and a control system.The deep foundation pit is provided with an upper berm, a lower berm and an excavation base face, dewatering tube wells are arranged on the excavation face and the upper berm, and first water pumps of the dewatering tube wells are used for water pumping and drainage; an inverted filter layer is arranged on the slope surface of a lower berm and an excavation base plane, dewatering and drainage are conducted in cooperation with a slope toe drainage ditch and a water collecting well, water level sensors in a river and the water collecting well are used for collecting the water level in real time, optimization decision making is conducted in combination with the water level, then a first water pump is driven to conduct power adjustment, and the dewatering and drainage construction efficiency is improved through a corresponding control decision making method.

The invention relates to an efficient waterproof and moistureproof electric power tube well and a construction technology thereof, and relates to the technical field of electric power engineering, the efficient waterproof and moistureproof electric power tube well comprises a well chamber and a shaft, the shaft is arranged at the top of the well chamber, the well chamber comprises a bottom plate, an inner well wall, an outer well wall and a top plate, and the inner well wall and the outer well wall are arranged at the top of the bottom plate and are arranged at intervals. By adopting the double-layer structure of the high-strength waterproof concrete and the stainless steel lining, the overall waterproof grade of the electric power tube well is remarkably improved, it is ensured that the cable is prevented from being damaged by external moisture, the service life is prolonged, and the probability of occurrence of the damp problem in the tube well is successfully restrained after the constant-temperature dehumidification device is arranged; the risk that electrical equipment is affected with damp and damaged is greatly reduced, the situation of an operation site is mastered in time and a response is made in time by means of the intelligent monitoring platform, and the operation and maintenance efficiency and the service quality are greatly improved.

The invention discloses a top-down pipe-jacking well wall-hanging sliding type concrete pouring device and a construction method thereof, and the device comprises an annular guide rail which is detachably installed on the inner wall of a previous pipe section of a jacking pipe; the flow guide plate is obliquely arranged, a first rolling wheel abutting against the inner wall is installed at the lower end of the flow guide plate, a supporting rod is connected to the upper end of the flow guide plate, the end, away from the flow guide plate, of the supporting rod is arranged on the annular guide rail in a sliding mode, and a feeding gap is formed between the lower end of the flow guide plate and the inner wall; the feeding gap is aligned to a top pouring opening of the next pipe section; and the side baffles are formed on the two opposite sides of the flow guide plate correspondingly, and the side baffles and the upper surface of the flow guide plate are enclosed to form a discharging channel. The method solves the problem that concrete segregation is easily caused by adopting a long chute in a traditional construction method in concrete pouring of a pipe-jacking well wall structure constructed by a reverse construction method.

The utility model discloses an underneath-penetrating buried section tunnel drainage structure which comprises a water collecting pipe buried at the bottom of a tunnel, a connecting opening is formed in the water collecting pipe, a downcast pipe well is connected to the connecting opening in a threaded mode, a connecting sleeve is arranged outside the connecting opening in a sleeving mode, an elastic piece is arranged between the connecting sleeve and the connecting opening, and a connecting rod is arranged on the inner wall of the connecting sleeve. The connecting rod penetrates and extends into the connecting port, and the connecting rod is connected with a detection ball through an inhaul cable. When the downcast tube well is installed on the water collecting pipe, if the water collecting pipe is in a deflection state, the detection ball can pull the connecting sleeve to bounce through the connecting rod, so that the connecting sleeve and the connecting port are in a non-concentric state, and normal screwing of the downcast tube well at the connecting port is hindered. Compared with the prior art, when the drainage structure is installed, the water collecting pipe can be prevented from being in an inclined state, and therefore the situation that a water inlet of the downcast tube well deviates from the center of the bottom of the tunnel is not prone to occurring.

The present invention provides a groundwater over-exploitation early warning system and a groundwater level monitoring method, wherein the groundwater over-exploitation early warning system includes a pipe well, a well cover, a gas pressure sensor, a control component, an alarm component, and a gas compensation component; the lower end of the pipe well is provided with a water inlet, and the upper end is a wellhead; the well cover is provided on the wellhead of the pipe well and is sealed with the pipe well; the gas pressure sensor is provided in the pipe well; the control component is communicatively connected to the gas pressure sensor; the alarm component is communicatively connected to the control component; the gas compensation component is connected to the pipe well and is electrically connected to the control component to compensate for changes in the total amount of gas in the pipe well caused by the respiration of microorganisms in the pipe well. The groundwater level monitoring method uses the above-mentioned groundwater over-exploitation early warning system to measure the groundwater level. The groundwater over-exploitation early warning system and the groundwater level monitoring method provided by the present invention can monitor the groundwater level when the pipe well is closed.

The invention discloses an underground water monitoring well device and a construction method thereof.The underground water monitoring well device comprises a well pipe, the well pipe comprises a plurality of pipe joints connected in sequence, every two vertically adjacent pipe joints are rotationally connected through a rotating structure, a gap is formed between every two adjacent pipe joints, and the rotating structures are in sealed connection with the pipe joints through sealing structures; wherein the rotating structure comprises a spherical hinge base and a spherical hinge rotationally connected to the spherical hinge base, the spherical hinge base is fixed to the position, close to the upper end, in the lower pipe joint, the spherical hinge base is provided with a channel penetrating through the spherical hinge base in the extending direction of the pipe joint, and the spherical hinge is provided with a through hole penetrating through the spherical hinge; the fixing sleeve is fixed to the upper end of the pipe joint located on the lower portion, a fixing groove is formed in one side of the fixing sleeve, the elastic piece is connected into the fixing groove and connected with the sealing sleeve, the inner wall of the sealing sleeve abuts against the outer wall of the spherical hinge, and the well pipe can be smoothly put into a drill hole without repeated pipe putting.

The utility model provides a waterproof structure for construction of an ultra-deep foundation pit in an urban updated industrial factory building. The waterproof structure for construction of the ultra-deep foundation pit in the urban updated industrial factory building comprises a secant pile body, and a steel pipe pile support is arranged outside the secant pile body; a tube well is arranged on the outer side of the steel pipe pile support. According to the technical scheme, preliminary waterproofing is achieved through tight meshing of the secant pile body; the waterproof performance is improved through the reinforcing effect of the steel pipe pile support; the water level in the foundation pit and the leakage risk are reduced under the assistance of dewatering of the tube well; and finally, construction of multiple waterproof barriers is achieved, and construction safety and foundation pit stability are ensured.

The application relates to the technical field of water conservancy engineering foundation pit pipe well landfill, and particularly discloses a water conservancy engineering foundation pit pipe well landfill construction method, which specifically comprises the following steps: early preparation, construction preparation, landfill operation and post-treatment. The water conservancy engineering foundation pit pipe well landfill construction method is also used in a water conservancy engineering foundation pit pipe well landfill construction device, which comprises a fixing mechanism and a moving mechanism. According to the cooperation between the fixing mechanism and the moving mechanism, the filling material of the foundation pit can be filled layer by layer during the process of filling the foundation pit pipe well. The filling material is continuously filled layer by layer, and the filling process can be vibrated, so that the filling material is uniformly distributed and compacted, the filling layer has better stability, the continuous layer-by-layer filling method can make the landfill operation more standardized, and the filling work can be more efficiently completed.

The utility model provides a dewatering well sealing system in a foundation pit, which comprises a foundation bottom plate and a steel sleeve penetrating through the foundation bottom plate, two ends of the steel sleeve are respectively communicated with a dewatering well pipe and a plugging ball valve, and the plugging ball valve is used for controlling connection and disconnection of the steel sleeve. A water stop ring plate is arranged in the foundation slab, and the outer wall of the steel sleeve is sleeved with the water stop ring plate. According to the plugging ball valve, the dewatering well pipe is sealed through the plugging ball valve which is higher in blocking capacity and bearing capacity, the problem that in the prior art, graded gravel and micro-expansive concrete cannot press gushing water, so that the sealing quality of a pipe well is low or well sealing fails is solved, and the plugging ball valve is high in construction efficiency and low in construction cost; the dewatering well pipe, the steel sleeve and the plugging ball valve are fixed in a welding mode, and the problems of stress damage and leakage caused by the fact that a flange cover and the steel sleeve are connected through bolts in the prior art are solved.

The utility model discloses vertical pipe hoisting equipment for a super high-rise pipe well, which comprises a bearing rod, a limiting cover arranged at the upper part of the bearing rod, a bearing bottom support arranged at the bottom of the bearing rod, the bearing bottom support comprises a circular mounting block, turnover brackets arranged on two sides of the mounting block, a limiting block fixedly arranged at one end of each turnover bracket, and connecting pieces arranged on two sides of the mounting block. The connecting pieces are connected with the overturning brackets through rotating shafts, a supporting plate is embedded in the bottom of the mounting block and connected with the mounting block through screws, and the two ends of the supporting plate clamp the bottoms of the two overturning brackets respectively; the hoisting device has the advantages of being simple in structure, convenient to support and fix the tube well stand column and stable in hoisting.

The utility model provides a multistage salt-cavity salt-cavern gas storage utilizing an insoluble substance interlayer, and belongs to the technical field of salt-cavity salt-cavern gas storage. The first tube well penetrates through the cover layer and then communicates with a first cavity in the first rock stratum, the second tube well sequentially penetrates through the cover layer, the first cavity and the first thick interlayer and then communicates with a second cavity, and the second cavity penetrates through the second rock stratum, the thin interlayer and the third rock stratum; the third tube well sequentially penetrates through the cover layer, the first cavity, the first thick interlayer, the second cavity and the second thick interlayer and then communicates with the third cavity located in the fourth rock stratum. According to the multi-stage salt cavity and salt cavern gas storage, the characteristics of the insoluble substance thick interlayers are utilized, the thick interlayers are reserved during water-soluble cavity making, salt layers adjacent to the interlayers are divided into independent cavities through the insoluble substance thick interlayers, the multiple cavities are combined in a grading mode through the tubular column, and the multi-stage salt cavity and salt cavern gas storage is formed.

The utility model provides an inspection well sludge depth detection device easy to operate, which comprises an operating rod and an inserting rod, a plurality of fixing rings are arranged on the outer side of the operating rod along the axial direction, the plurality of fixing rings are connected through at least two wires arranged at intervals, a metal rod is arranged at the lower part of each wire, and an alarm assembly is detachably arranged at the top of the operating rod. The alarm assembly is electrically connected with the wire, the metal rod is used for detecting the top position of sludge, and the insertion rod is detachably arranged on the lower portion of the operation rod and used for detecting the bottom position of the sludge. The device is compact in structure and convenient to operate, the efficiency of measuring sludge in the tube well is greatly improved, and the quality of sludge depth measurement is guaranteed.

The utility model discloses a rear assembly type building integrated tube well system. The rear assembly type building integrated tube well system is composed of a bearing sleeve system, a prefabricated assembly type tube well wallboard system, a solar lighting system and an identification system. The bearing sleeve system comprises a bearing sleeve, a flame-retardant material inner pipe and a wedge-shaped clamping piece; the bearing sleeve is an inverted conical structure pipe; the bottom of the bearing sleeve is mounted in a reinforced concrete structure floor slab; the bearing sleeve and the floor slab structure are synchronously poured and fixed; the height of the bearing sleeve is slightly greater than the thickness of the floor; the diameter of the bearing sleeve is larger than that of a vertical pipeline penetrating through a floor. A plurality of square clamping grooves are formed in the inner wall of the bearing sleeve at equal intervals, and the clamping grooves are used for installing and fixing wedge-shaped clamping pieces; the utility model has the advantages that the operation difficulty caused by narrow space in the tube well construction can be improved, the daily maintenance and use are considered at the same time, the standardized construction and intelligent use of the tube well are realized on the project, and the quality and the function of the traditional building tube well are improved.

The utility model relates to a raft inner downcast tube well multifunctional plugging cap which comprises a plugging cap body, the plugging cap body is cylindrical, the upper end of the plugging cap body is sealed, the lower end of the plugging cap body is open, and a valve is arranged in the middle of the upper end of the plugging cap body. A plurality of water stop steel plates with outer edges turned downwards are sequentially arranged on the periphery of the middle of the plugging cap body from top to bottom, and a circle of expansion water stop strips are arranged at the lower ends of the water stop steel plates around the plugging cap body. According to the multifunctional plugging cap, plugging of the downcast tube well and recycling of the tube well can be achieved, the plugging efficiency and the plugging quality of the tube well can be effectively improved, in addition, after the multifunctional plugging cap is adopted, the tube well can be converted into a construction water well, and the multifunctional plugging cap can be suitable for different construction water use scenes by being combined with valves of different sizes.

The utility model relates to a kind of pneumatic precipitation monomer double-cavity water storage replacement device, including the upper water storage cavity and lower water storage cavity being arranged in tube well, the pressure sensor is separately arranged in the bottom of upper water storage cavity, lower water storage cavity, first water inlet check valve is equipped in the side of upper water storage cavity, second water inlet check valve is equipped in the side of lower water storage cavity, first water pipeline and second water pipeline that respectively extend into the bottom of upper water storage cavity and lower water storage cavity are respectively equipped in the side of the top of upper water storage cavity, first gas pipeline and second gas pipeline that respectively extend into the top of upper water storage cavity and lower water storage cavity are respectively equipped in the other side of the top of upper water storage cavity, check valve is respectively equipped in the outer leakage part of first water pipeline and second water pipeline and is jointly connected with a drain pipe, solenoid valve is respectively equipped in the outer leakage part of first gas pipeline and second gas pipeline and is jointly connected with an air inlet pipe.The utility model realizes the continuous work of drainage and water inlet, and greatly improves precipitation effect.