1194 results about "Water stop" patented technology

The invention discloses a panel vertical seam water stop structure repair effect evaluation method, which comprises the following steps of: firstly, synchronously obtaining surface crack and internal defect data through cooperative detection of infrared thermal imaging and ultrasonic flaw detection; and carrying out space alignment on point cloud data generated by three-dimensional laser scanning and an ultrasonic detection result, and establishing a BIM model containing a crack three-dimensional form. A practical engineering environment is simulated in a laboratory to carry out material accelerated aging and test key indexes such as an elastic recovery rate, a base surface state is evaluated through a temperature and humidity sensor array in a construction stage, a six-axis grouting robot is adopted to execute accurate filling, a curing process is monitored by a synchronous pre-embedded optical fiber sensor, and after aging is simulated by combining a hydraulic test with climate, a construction period is shortened. A distributed optical fiber network is used for continuously collecting deformation data, a comprehensive evaluation model is constructed based on mechanics, durability and sealing indexes, and finally material selection and process parameters are optimized through machine learning.

The invention discloses a freezing pipe relative position adjusting structure for inter-pile freezing water stop, which comprises an inner ring stirrup, the inner ring stirrup is fixed on the inner ring of an outer ring stirrup of a reinforcement cage, a freezing pipe is positioned between the inner ring stirrup and the outer ring stirrup, and a driving device drives the freezing pipe to move around the inner ring stirrup so as to adjust the relative position of the freezing pipe. The operation of lowering the freezing pipe along with the reinforcement cage is transformed, the position of the freezing pipe is adjusted through the driving motor, the accuracy can be guaranteed in the lowering stage, and after lowering is finished, the freezing pipe can be precisely and secondarily adjusted through the driving motor according to the inclination measurement result of the vertical hole, so that the accuracy is further guaranteed; the high-precision requirement for lowering the freezing pipe in the reinforcement cage can be met, and compared with the situation that multiple workers need to repeatedly adjust the lifting point and prize and correct in alignment in traditional construction, the labor cost and the alignment time are greatly saved.

The invention relates to the technical field of underground water prevention and control, in particular to a tunnel two-step grouting plugging method for wide crack water gushing, which comprises the following steps of: constructing a grouting hole intersected with a wide crack or a concentrated water gushing channel according to a geological survey result; first rapid plugging slurry is injected into the crack through the grouting hole, and the first rapid plugging slurry can form a temporary water stopping barrier in the flowing water environment; the water outlet amount change and the grouting pressure change of the adjacent observation holes are monitored, and when the water outlet amount is remarkably reduced and / or the grouting pressure stably rises and forms a platform, it is judged that the temporary water stop barrier is formed; and second reinforcing grout is injected into the crack through the grouting holes, and after the second reinforcing grout is solidified, a permanent reinforcing body with mechanical strength is formed. By optimizing the grouting material and the process time sequence, effective combination of rapid plugging and long-term reinforcement is achieved, the grouting reliability is improved, and the engineering cost is reduced.

The application provides a tunnel lining cushion permeation characteristic test device and method, which comprises a constant pressure water supply system, a tunnel lining cushion simulation system, an outflow monitoring system and a mechanical water stop system. The constant pressure water supply system is located above the tunnel lining cushion simulation system, and pure water flows to the tunnel lining cushion under constant pressure through the constant pressure water supply system. The outflow monitoring system is located below the tunnel lining cushion simulation system, and the pressure outside the tunnel lining cushion is monitored in real time under the condition that the water flow is free to overflow. The mechanical water stop system realizes water stop of the contact positions of the above three different systems through a simple and effective mechanical structure. The test device can simulate the cushion seepage process under the influence of single factor or multiple factors such as different lining crack sizes, lining gap sizes and cushion blockage degrees. The application has a clever structure design and a simple method, and provides technical support for the test research of the tunnel lining cushion permeation characteristics.

The floor penetrating sleeve structure comprises an original structural plate, a hole is formed in the original structural plate, a floor penetrating sleeve is arranged in the hole in the original structural plate in a penetrating mode, and a water stop ring connected with the floor penetrating sleeve in a sealed mode is arranged in the middle of the wall of the floor penetrating sleeve in the circumferential direction. The water stop ring is located at the top of the hole and is in sealed connection with the edge of the hole, and the wall of the floor penetrating sleeve is in sealed connection with the inner wall of the hole through a sealing structure. The invention further discloses a construction method of the floor penetrating sleeve structure for post-trepanning construction. The method can be used for quickly and conveniently carrying out post-positioned floor penetrating sleeve construction, and can be widely applied to the field of mechanical and electrical installation of constructional engineering.

The utility model provides a post-cast strip water stopping and plugging structure which comprises a structural steel bar, a water stopping steel plate, a fixing device, a reinforcing piece and a connecting piece, and the water stopping steel plate is parallel to the structural steel bar. The fixing devices abut against the two sides of the water stop steel plate in the thickness direction correspondingly, are aligned with the contour line of the to-be-poured structure and are connected with structural steel bars in a clamped mode. The two ends of the reinforcing pieces are connected to the fixing devices on the two sides of the same waterstop steel plate. The two ends of the connecting piece are connected to the corresponding reinforcing pieces on the two sides of the post-cast strip respectively. According to the utility model, the fixation of the water stop plate and the installation of the plugging structure are combined, the construction process is simplified, the installation and the disassembly are convenient, and the construction efficiency is improved; the fixing device and the water stop steel plate are tightly connected to form a plugging structure, so that good integrity and stability are achieved, and the concrete pouring quality effect of the post-cast strip part is improved; and the fixing device, the reinforcing piece and the connecting piece can be recycled, so that the construction cost is reduced.

The utility model discloses a prefabricated diaphragm wall type assembled subway entrance and exit structure which comprises side wall structures, a prefabricated top plate and a prefabricated bottom plate are arranged between the side wall structures of the entrance and exit, the prefabricated top plate and the prefabricated bottom plate are both connected with the side wall structures through ultrahigh concrete, and the side wall structures are formed by integrating an enclosure structure and a main body structure. The side wall structure comprises prefabricated underground diaphragm walls, and underground diaphragm wall inter-amplitude connecting assemblies are arranged between the adjacent prefabricated underground diaphragm walls. The foundation pit support structure, the waterproof curtain and the side wall of the main body structure are integrated, so that working hours and manufacturing cost are saved. According to the utility model, the connection scheme of the waterstop strip bags, the C / T inter-width connectors and the UHPC concrete wet joints is adopted between the prefabricated underground diaphragm walls, so that the waterproof and guiding effects are achieved. According to the utility model, the longitudinal tensioning connection scheme of the inter-width concave-convex tenons, the elastic sealing gaskets and the prestressed steel bars is adopted between the prefabricated plate widths, so that not only can shearing force be effectively transmitted, but also a water stopping effect can be achieved.

The invention discloses a water stopping device and method for a shield arrival stage, and relates to the technical field of tunnel construction.The water stopping device comprises a tunnel portal ring beam, a plurality of glass fiber ribs and concrete, the tunnel portal ring beam is arranged at a tunnel portal of a tunnel, and a backfill area is formed in the tunnel portal ring beam; the multiple glass fiber ribs are connected to the portal ring beam and arranged in the backfill area in a staggered mode to form a fastening net. The backfill area is filled with concrete, and a backfill wall is formed to block the tunnel portal; the cross section area of the backfill wall is larger than or equal to that of a cutterhead of the shield tunneling machine. The backfill area is filled with the concrete to form a backfill wall, before the shield tunneling machine reaches the tunnel portal, the backfill wall can block the tunnel portal, the situation of water gushing and sand gushing is avoided, and the water stopping effect is achieved; the multiple glass fiber ribs are arranged in the backfill area in a staggered mode to form a fastening net, and the overall rigidity and stability of the backfill wall are improved through the multiple glass fiber ribs.

The invention relates to the technical field of water-rich tunnel engineering, in particular to a curtain grouting device for water stop of a water-rich tunnel, which comprises a flange plate, the flange plate is mounted on a grouting machine through bolts, a plurality of conveying pipes are mounted on one side of the flange plate, and a grouting pipe is mounted at the tail end of the conveying pipe farthest from the flange plate; splicing structures are installed between every two adjacent conveying pipes and between the conveying pipes and the grouting pipes, plugs are installed at the tail ends of the grouting pipes, and annular bags are fixed to the outer sides of the splicing structures at the ends of the grouting pipes through installation structures. By means of the installation structure, the annular bag body is convenient to replace, the front check ring and the rear check ring have a guiding effect on deformation of the annular bag body, the annular bag body can abut against the inner wall of a grouting hole more quickly under the condition that the inflation amount is reduced, the position of the annular bag body can be independently controlled by people through the electric walking wheels so that the grouting area can be changed, and the grouting efficiency can be improved. The practicability and the applicability are better, and the grouting efficiency and the curtain quality can be improved.

The invention relates to the technical field of tunnel construction, in particular to a curtain grouting device for tunnel water stopping, which mainly comprises a machine body and further comprises an adjusting mechanism arranged on one side of the machine body and a fixing mechanism arranged on one side of the machine body. By screwing a nut, controlling the position of an adjusting block and fixing the adjusting block, the adjusting block drives an adjusting column and a fixing strip to rotate by a certain angle through an adjusting groove, drives a fixing block and an arc-shaped plate to rotate by a certain angle, loosens a hose, drives a connecting sleeve and a fixing rod to rotate by a certain angle, and the fixing rod moves into the inner wall of the arc-shaped plate and drives a cylinder to move into the inner wall of a mounting groove; the clamping column and the clamping groove are clamped to fix the cylinder and further fix the connecting sleeve, so that a certain angle is formed between the connecting sleeve and the fixing sleeve, the hose and the grouting head are connected by a certain length and are in an arc-shaped bent state, it is guaranteed that the joint of the hose and the grouting head cannot be bent by a large angle to be damaged, and slurry on the inner wall of the hose smoothly circulates; and therefore, the grouting efficiency and quality are improved.

The utility model relates to the technical field of steel pipe pile construction, in particular to a grouting water stop device. The grouting water stopping device comprises a primary lock catch and a secondary lock catch which are connected with the steel pipe pile, the primary lock catch is provided with a water seepage monitoring sensor, a liquid inlet hole is formed in the end face of the secondary lock catch, a liquid flowing hole is formed in the side wall of the secondary lock catch, and the liquid inlet hole is communicated with the liquid flowing hole; and a grouting mechanism is arranged at the top of the sub lock catch and comprises a liquid inlet pipe and an insertion pipe, the liquid inlet pipe is arranged at the top of the insertion pipe and communicates with the insertion pipe, and the insertion pipe can be inserted into the liquid inlet hole. Through the cooperation of the insertion pipe and the liquid inlet hole and the connection of the insertion pipe and the liquid inlet pipe, cement slurry can enter the liquid inlet hole conveniently, and therefore the water stopping and plugging effects are achieved.

The utility model discloses a combined type top-down pipe jacking working well which comprises a well chamber, a plurality of stabilizing piles and a plurality of horizontally-arranged concrete well rings, and the well chamber is vertically dug. The stabilizing piles are vertically inserted into the well chamber, the side wall of each stabilizing pile is attached to the inner wall of the well chamber, and the side walls of the adjacent stabilizing piles are connected in a sealed mode so that all the stabilizing piles can define a stabilizing frame. All the concrete walling cribs are sequentially stacked in the well chamber from top to bottom, and the outer wall of each concrete walling crib abuts against the inner wall of the stabilizing frame. The problems that a water stopping and soil fixing structure of a reverse well arranged in a soft soil area or a high underground water level area is complex, cost is high, and the water stopping and soil fixing effect is not ideal can be solved.

The application provides a foundation pit supporting structure of deep silt stratum and a construction method thereof. The foundation pit supporting structure comprises cast-in-situ bored piles arranged in rows and a water stop curtain. The water stop curtain comprises a plurality of rotary jet piles located in the silt layer and the upper stratum thereof and a plurality of swing jet piles located in the lower stratum of the silt layer. The cast-in-situ bored piles are constructed by using rotary drilling machines; adjacent rotary jet piles are overlapped and engaged with each other; adjacent swing jet piles are overlapped and engaged with each other; and adjacent cast-in-situ bored piles are not engaged with each other. The application combines the construction of the water stop curtain and the cast-in-situ bored piles, firstly constructs the rotary jet piles of the water stop curtain, overlaps and engages the rotary jet piles with each other, then constructs the cast-in-situ bored piles by using rotary drilling machines in the rotary jet piles, the diameter of the rotary jet piles is larger than that of the cast-in-situ bored piles, the former serves as the water stop curtain and also serves as the temporary casing during the construction of the latter, one pile has two uses, the construction process is reduced, the engineering cost is lowered, and the application has good popularization value.

The invention relates to a water stop material injection method and an electric junction box. A water stop material filling method for filling a water stop material into a lead-out port of an electric wire provided in an electrical junction box includes injecting the water stop material through a first hole formed in a hollow filling portion surrounding an outer side of the lead-out port and communicating with the lead-out port.

The utility model provides a prefabricated channel relates to water conservancy engineering irrigation and drainage channel technical field. The prefabricated channel realizes the effective link of section through setting up support step and lap overstep at U type channel groove both ends, effectively avoids the dislocation of assembling lap joint and the damage of water stop, the joint of each section U type channel groove is constituted the combined type seepage prevention system by the joint surface sealing filler and the built -in water stop band, has improved the leakproofness and water stop effect of joint surface greatly, the top of channel groove adopts hidden type protection cover plate to cover, can strengthen the safety protection of irrigation and drainage channel, can slow down the silting of groove bottom obviously, is favorable to the later operation management maintenance, the wall body adopts the gradual expansion structure of overcurrent surface vertical, retaining soil surface inclination, can guarantee the overcurrent surface after the assembly of each adjacent U type channel groove is always even and straight, avoids the heterofacial convex, improves the flow state, U type channel groove adopts the whole prefabricated thin wall type structure, safe and stable, economic and practical, simple structure, can prefabricate or purchase the factory prefabricated product on the spot.

This invention discloses a water-stopping structure and construction method for vertical joints in ultra-long dam panels. The structure includes a mortar pad filled with grooves in the vertical joint. A neoprene rubber gasket is placed on the upper surface of the mortar pad, and a water-stopping copper sheet is placed on the neoprene rubber gasket. The water-stopping copper sheet includes a copper lug and two side wings positioned opposite each other on either side of the copper lug. The copper lug is filled with a flexible material and sealed with tape. The flexible filling material includes a neoprene rubber rod placed at the bend inside the copper lug and a polyethylene closed-cell foam board placed on one side of the neoprene rubber rod. A composite water-stopping layer covers the upper surfaces of the two side wings of the water-stopping copper sheet. Through this multi-layered synergistic seepage prevention structure, the rigid water-stopping load-bearing capacity and the flexible water-stopping deformation are adapted to each other, improving the water-stopping effect.

The present application provides a kind of pile between cast-in-place retaining wall single-sided formwork and construction method, arc stress reinforcement is reliably welded with pile foundation main reinforcement, whole arc stress reinforcement is in the interior of pile between wall body, water stop screw used in single-sided formwork is firmly welded with arc reinforcement, the first reinforcing of single-sided formwork outside adopts one screw configuration two vertical steel pipes vertical reinforcement, most outside is provided with horizontal steel pipe horizontal reinforcement to ensure the integrity of single-sided formwork, the present application is suitable for the installation and reinforcement of pile between retaining wall single-sided formwork, construction cycle is greatly shortened, and cost reduction effect is remarkable.

The invention relates to the technical field of settlement post-cast strips, in particular to a pre-closed advanced water stop grouting device and method.The pre-closed advanced water stop grouting device comprises a basement top plate, a bottom plate, a cover plate and a grouting sleeve and further comprises a self-adaptive adjusting assembly; the self-adaptive adjusting assembly comprises an inner cylinder, an outer cylinder, a spring, a sealing ring and a pre-tightening force adjusting component, and when the building body settles, the cover plate descends to drive the outer cylinder to descend, and then the spring is extruded; the springs on the two sides generate reverse buffering force after being compressed, the force is transmitted to the cover plate through the outer cylinder, the internal stress of the cover plate caused by differential settlement is effectively counteracted, and it is avoided that a sealing structure at the joint of the cover plate and a basement top plate cracks due to rigid pulling; and after the settlement is stable, pressure grouting is performed through the grouting sleeve, so that the problems of cracking of the cover plate and failure of sealing structures such as a sealant and a waterproof coiled material due to rigid pulling are solved.

The utility model relates to basement outer wall water stop steel plate place exempts from cutting exempts from reinforcing's assembly type stirrup, including upper ellipse hoop, lower ellipse hoop, stand hoop, sleeve, telescopic adjusting lever, round cake shape steel clamp plate, single limb mountain type muscle, water stop steel plate, be provided with many stand hoops between upper ellipse hoop and lower ellipse hoop, the outside of stand hoop is provided with the sleeve, and single limb mountain type muscle is connected with stand hoop through the sleeve, the inside of every stand hoop is provided with telescopic adjusting lever, and the end of telescopic adjusting lever is fixed round cake shape steel clamp plate, water stop steel plate inserts the cavity that upper ellipse hoop, lower ellipse hoop, stand hoop enclose, and round cake shape steel clamp plate is located at both sides of water stop steel plate, and the round cake shape steel clamp plate of water stop steel plate both sides is close to water stop steel plate. The utility model basement outer wall water stop steel plate place stirrup adopts assembly type stirrup structure, can effectively avoid the collision problem of the steel bar of basement outer wall and shear wall edge component or frame column intersection, guarantees water stop effect.

The utility model discloses an assembly type canal lining device, and belongs to the technical field of water conservancy projects. The device comprises a horizontal module and a slope module, the horizontal module is provided with a clamping groove opening, a clamping groove hole, a tenon and a first expansion rubber water stop block, and the slope module is provided with a tenon, a clamping groove opening, a clamping groove hole and a second expansion rubber water stop block. All the modules are connected through tenon-clamping groove structures, the horizontal modules and the slope modules are connected to adapt to the current gradient of a channel, and the adjacent horizontal modules and slope modules are connected to adapt to the bottom slope and the width of the channel correspondingly. And the water stop blocks on the module tenons and the elastic sealing materials at the joints form a multiple water stop structure. The device is simple in structure, convenient to operate, good in water stopping effect, high in adaptability and capable of effectively overcoming the defects of an existing canal lining technology, improving the canal system water utilization coefficient and reducing water resource waste.

The invention discloses a water-bearing stratum exploration hole segmented water pressure test method which comprises the following steps: S1, drilling to a final hole in a test field, and designing the position of each test section; s2, assembling a test system, sleeving an upper water stop device and a lower water stop device, and putting the upper water stop device and the lower water stop device into a hole; s3, an upper packer of the upper water stop device and a lower packer of the lower water stop device are pressurized and expanded; s4, carrying out water pressure test work on the first test section; s5, pressure relief is conducted on the upper packer and the lower packer; s6, the steps S3 to S5 are repeated, and the water pressure test work is completed; s7, carrying out a merging water pressing test, and calculating a deviation coefficient; and S8, grading the water pressure test work quality based on the numerical value interval of the deviation coefficient. The upper water stopping device and the lower water stopping device can be lifted relatively to adjust the distance between the upper packer and the lower packer, so that the length and the position of a test section can be adapted, and the working efficiency of a water pressing test is improved; and through the deviation coefficient alpha, the water pressure test work quality of each test section is evaluated, and the precision of exploration work is improved.

The invention provides an underground comprehensive pipe gallery belt water-stop disassembly-free end mold and a construction method. The underground comprehensive pipe gallery belt water-stop disassembly-free end mold comprises annular prefabricated concrete, and annular water-stop belts are arranged on the end faces of the two sides of the prefabricated concrete; the prefabricated concrete is further provided with an annular flexible deformation joint, and an annular U-shaped water stop strip is arranged in the flexible deformation joint; the flexible deformation joint is located between the two end faces of the prefabricated concrete and divides the prefabricated concrete into two parts. An outer step and an inner step which extend outwards are arranged on the two sides of the annular waterstop, and the height of the outer step and the height of the inner step are larger than or equal to the height of the annular waterstop. A horizontal waterstop reserved hole is formed in one side of the annular waterstop. According to the scheme of end mold prefabrication and disassembly-free and side wall cast-in-place, the structure which is complex in structure and high in anti-permeability performance contribution is arranged on the disassembly-free end mold, factory prefabrication is conducted, and large-batch, high-quality and low-cost production can be achieved through batch production and equipment assistance. And the size of the disassembly-free end mold is relatively small, so that the transportation cost is not high.

The invention provides an underground space communication reserved hole wall body later-stage hole communication construction method, an existing prefabricated wall body comprises a main body structure area and a reinforcing structure area, and a water stop opening method is arranged on the butt joint face of the existing prefabricated wall body, and the method comprises the steps that firstly, an automatic lock catch water stop system is installed in the reinforcing structure area of the existing prefabricated wall body, and an automatic lock catch water stop system is installed in the reinforcing structure area of the existing prefabricated wall body; a spherical rubber water stop belt is placed in the water stop opening; secondly, a to-be-built basement soil body is excavated, and to-be-built basement floors are sequentially constructed from bottom to top; 3, taking out the wall body of the hole, and arranging a vertical support at the same time; constructing a first reinforcing column on the left side of the hole; the reserved hole wall body and the existing prefabricated wall body are in butt joint and locked; sequentially taking out each wall body unit, additionally arranging a vertical support, and arranging a second reinforcing column; and fourthly, the reinforcing structure area is constructed, the existing basement floor, the existing prefabricated wall and the basement floor to be built are connected, and the lintels, the first reinforcing columns and the second reinforcing columns form a complete communicating hole.

The utility model discloses a novel Chinese-style tile structure which comprises two sets of keels, the installation heights of the two sets of keels are different, and a set of installation bottom tile bosses are installed in the middle of the upper surface of each set of keels in a bolting mode. A plurality of groups of full-length bottom tiles are equidistantly mounted on the upper surfaces of the two groups of mounting bottom tile bosses in a bolting manner, a plurality of groups of cover tiles are mounted between the two adjacent groups of full-length bottom tiles in a covering manner, and the groups of cover tiles are alternately mounted in a covering manner; and a water stop step is arranged on the upper surface of the cover tile. The firm shell is formed through punch forming, the appearance of the shell is completely consistent with that of an argil tile, the weight is light, installation is convenient, cover tiles are effectively limited through a full-length bottom tile, meanwhile, through cooperation of a water stop step, a connecting inserting groove and a rear side baffle, all the cover tiles can be stably overlapped and covered, waterproof treatment can be effectively conducted, and the service life of the cover tiles is prolonged. In addition, due to the fact that the cover tiles are light in structural weight and safe in structure, the overall installation difficulty of the device is lowered.

The present application relates to a waterproof structure for a connection node between a new and an old underground structure and a construction method thereof, which relates to the field of waterproof construction of underground projects. The structure includes a water stop plate fixed to a ground connection wall, the water stop plate being arranged at a subsequent connection between the top plate of the underground structure and the bottom plate of a newly constructed underground space; and a waterproof roll member, the waterproof roll member being arranged along the height direction of the ground connection wall, the waterproof roll member being in conflict with the ground connection wall, the water stop plate, and the top plate of the underground structure. The water stop plate is used to prevent the waterproof roll member from being damaged when the ground connection wall is broken, and the water stop plate and the waterproof roll member are used together to be folded and laid to the bottom of the bottom plate of the newly constructed underground space after the ground connection wall is broken. The water stop plate protects the waterproof roll member from being damaged when the ground connection wall is broken, and the water stop plate and the waterproof roll member are folded and laid on the bottom plate of the newly constructed underground space as a waterproof structure for the newly constructed underground space and the existing subway station project, which has the effect of convenient construction.

The utility model discloses a waterproof structure of a bridge joint, which belongs to the technical field of bridge waterproofing, and comprises a gap, an adhesive is fixedly connected with the inner part of the gap close to the side edge, a water stop strip is filled in the adhesive, the top of the gap is fixedly connected with a cover plate, and the top of the cover plate is fixedly connected with a waterproof layer. A set of water inlet holes are formed in the bottom of the cover plate, water guide grooves are formed in the two sides of the water inlet holes, a drainage groove is formed in one side of each water guide groove, a sealing block is slidably connected to the interior of each water guide groove, and a filtering mechanism is arranged at the end, close to the outer side, of each drainage groove and comprises a connecting cylinder. According to the bridge drainage device, seepage water can be drained in time, the problem of water accumulation at bridge joints is solved, the bridge safety is improved, a filtering assembly is arranged, external impurities can be filtered, the problem that hole grooves are blocked is solved, and smooth drainage work is guaranteed.

The utility model discloses a kind of gas pipeline water stop, it is related to gas pipeline conveying equipment technical field, comprising: water stop body and gas-liquid separation mechanism and free-floating ball type trap, gas-liquid separation mechanism is set in water stop body, to form in water stop body top air passage and bottom drain passage, air passage is communicated with gas outlet pipe, drain pipe is communicated with drain passage;Free-floating ball type trap is installed in the bottom of drain pipe, to form liquid storage cavity in drain pipe, after the water of liquid storage cavity exceeds design height, drive free-floating ball type trap's float ball to rise and then open free-floating ball type trap and discharge water exceeding design height from the drain port of free-floating ball type trap, without manual intervention, can automatically control drainage according to the change of water level in liquid storage cavity, improve the timeliness and efficiency of drainage, ensure that ponding in pipeline system does not too much affect operation.

The utility model provides a tubular pile cofferdam construction water stop test device, which relates to the technical field of tubular pile cofferdam construction, and comprises a test box, a soil table and a plurality of tubular piles, and two groups of mortise lock structures are respectively arranged on the peripheral surface of each tubular pile; every two adjacent pipe piles are connected together through a mortise lock assembly, and each mortise lock assembly comprises a set of mortise lock structures arranged on one pipe pile and a set of mortise lock structures arranged on the other pipe pile, and each mortise lock structure comprises a female lock catch and a first insertion block; the mortise lock structure is arranged on the other pipe pile and comprises a sub lock catch and a second insertion block; the interlocking assembly comprises a bolt, a nut and two insertion plates; one insertion plate is inserted into the first insertion block; the other insertion plate is inserted into the second insertion block; a bolt penetrates through the two insertion plates and then is locked by a nut; and under the constraint of the bolts, the two inserting plates are bent and buckled to form a pouring space. The pipe pile cofferdam water stop test device solves the problems that in the prior art, a pipe pile cofferdam water stop test is inconvenient to operate, a pipe pile is inconvenient to pull out under the action of slurry solidification after the test is completed, and the test efficiency is affected.

The utility model provides a dewatering well plugging structure, which relates to the technical field of building construction and comprises a double-layer reinforcement cage sleeved in a dewatering well, the double-layer reinforcement cage comprises a reinforcement cage body and a rectangular support frame, the upper end of the reinforcement cage body is connected with the rectangular support frame, a first steel pipe is sleeved on the inner side of the reinforcement cage body, and a second steel pipe is sleeved on the inner side of the first steel pipe. An outer water stop ring is welded to the outer side of the rectangular supporting frame to form a first sealing structure; the partition plate is welded to the inner side of the rectangular supporting frame and covers the first steel pipe to form a second sealing structure, the rectangular supporting frame is filled with a second water stop strip, so that a third sealing structure is formed at the joint, and the multiple sealing structures can ensure the plugging and waterproof closing effects of the joint of the dewatering well and the foundation bottom plate in the later period.