1914 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 color steel plate roofs, in particular to a leakage-proof color steel plate roof connecting structure and a mounting method thereof.By arranging pressing strips and sealing strips, the connecting ends of adjacent color steel plates can be pressed and sealed, so that water seepage at the joints of the adjacent color steel plates is effectively avoided, and the service life of the color steel plates is prolonged. And through the arrangement of the ridge plate, the rubber pressing strip and the water stop strip, the connecting end of the two color steel plate roofs can be sealed, so that the situation of ridge water leakage is prevented, and the use effect is good.

The invention provides a sealing structure of a floating tunnel pipe joint, which comprises a pipe joint I, a pipe joint II and a multi-layer sealing structure, the multi-layer sealing structure comprises a waterproof protection device fixedly connected with the pipe joint I and the pipe joint II and a multi-layer water stop structure arranged on the inner side of the waterproof protection device, and the multi-layer water stop structure is connected with the pipe joint I and the pipe joint II; the multi-layer water stop structure sequentially comprises a first water stop structure, a second water stop structure and a third water stop structure from outside to inside. And by arranging the waterproof protection device, the effectiveness and durability of the water stop structure are improved. And the rubber composite part is arranged at the end part of the metal water-stop belt, so that the reliability of connection between the first water-stop structure and the pipe joint is improved. The inflatable airbag is arranged in the center of the rubber body of the second water stop structure, so that the effectiveness of the sealing structure of the second water stop structure is improved. And a fixed press-fitting device is arranged in the third water stop structure, replacement is achieved by adjusting the tightness of a nut, and convenience and rapidness are achieved. The invention further provides a sealing method of the floating tunnel pipe joint connector.

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 invention discloses a water conservancy project water retaining construction water stop anti-seepage device which comprises a water stop plate, a switching assembly, a supporting assembly and a stretching assembly, one side of the water stop plate is fixedly connected with a positioning frame, the interior of the water stop plate and the interior of the positioning frame communicate with each other, and the two ends of one side of the water stop plate are each provided with a vertical groove allowing the supporting assembly to be unfolded. Scraping plates are fixedly connected to the two sides of the water stop plate and correspond to the stretching assemblies in position. By arranging the supporting assembly, the water stop plate is supported, and meanwhile the load borne by the water stop plate is effectively dispersed; by arranging the stretching assembly, plugging and water stopping are achieved by self-adaption to the width of the water channel, the stretching process has self-locking performance, and the risk that water flow leaks at the gap is further effectively reduced; and by arranging the switching assembly, the device is automatically switched to the water channel plugging operation after completing the supporting and unfolding operation, so that the operation amount of personnel is effectively reduced, and the working efficiency of the device is improved.

The invention relates to a water stop structure for a vertical jacking construction method, a tunnel structure and a tunnel construction method. The structure comprises a water stop frame which is arranged on the inner side of a tunnel segment and surrounds a segment opening by a circle, and further comprises a sealing ring, an oil immersion packing unit and a grouting hole, a first check block is arranged on the inner side wall of the water stop frame, and a sealing area is formed among the first check block, the water stop frame and a vertical pipe mechanism; the sealing ring and the oil immersion packing unit are respectively extruded and filled in the sealing area, the sealing ring is positioned above the oil immersion packing unit, and the grouting hole is formed in the inner side wall of the water stop frame and is communicated with the sealing area. The inner side wall of the water stop frame is provided with the sealing ring, the grouting hole and the oil immersion packing, the waterproof effect is good, and seawater leakage in the jacking process and after jacking can be avoided; the grouting holes and the oil-immersed packing are arranged in a combined mode, the oil-immersed packing is not dismantled in the construction period, the leakage risk in the construction period is avoided, and the oil-immersed packing is used for temporary water stopping and also used for water stopping in the operation period.

The utility model discloses a rubber water-stop strip component convenient to install, which comprises a rubber water-stop strip body, sealing plates are fixedly connected to two sides of the rubber water-stop strip body, profile steel is arranged on two sides of the rubber water-stop strip body, a clamping groove is arranged on the front side of the profile steel, a clamping strip is arranged in an inner cavity of the clamping groove, and the rubber water-stop strip body is fixedly connected with the clamping strip. Connecting plates are fixedly connected between the clamping strips and the sealing plates, mounting grooves are formed in the front face and the back face of the profile steel, and baffles are arranged on the front face and the back face of the profile steel. The clamping strips can be clamped into the clamping grooves through the clamping grooves for quick connection, the clamping strips are subjected to limiting connection through the baffles, and compared with a traditional mode that a rubber water stop strip body is pried and plugged into a profile steel groove point by point through a wrench, the clamping type limiting connection is more convenient, time-saving and labor-saving; aging of the rubber water-stop strip can be reduced, the service life of the rubber water-stop strip is prolonged, and people can use the rubber water-stop strip conveniently.

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 utility model relates to the technical field of hydrogeological exploration, in particular to a coal field hydrogeological exploration layering water stopping device which comprises a fixing box, a pipeline is fixedly installed on the top of the fixing box, and the bottom end of the pipeline penetrates through the top of the fixing box and extends to the position below the bottom of the fixing box. According to the layered water stopping device for coal field hydrogeological exploration, through cooperative use of the fixing box, the pipeline, the first water stopping plate, the second water stopping plate, an annular sealing rubber belt, an adjusting lead screw, a limiting rod, an annular extrusion plate, a motor, a worm and a worm gear, the annular extrusion plate is controlled to move downwards to extrude the annular sealing rubber belt; the water stop plates are deformed to fill gaps around the first water stop plate and the second water stop plate, so that water leakage is effectively prevented, and the water stop effect of each layer is ensured. By extruding the annular sealing rubber belt, the device can achieve an effective sealing effect, and the annular sealing rubber belt is relatively low in manufacturing cost and is more economical and practical.

The present invention discloses a water-stopping and anti-seepage device for water retaining construction of a water conservancy project, comprising a water stop plate, a switching component, a support component and an extension component, one side of the water stop plate is fixedly connected with a positioning frame, and the insides of the water stop plate and the positioning frame are interconnected, both ends of one side of the water stop plate are provided with vertical grooves for the support component to unfold, and both sides of the water stop plate are fixedly connected with scrapers, and the scrapers correspond to the extension component. The present invention provides support to the water stop plate while effectively dispersing the load on the water stop plate by setting a support component; by setting an extension component, the width of the water channel is adaptively adjusted to achieve blocking and water stopping, and the extension process has self-locking properties to further effectively reduce the risk of water leakage at the gap; by setting a switching component, the device automatically switches to the water channel blocking operation after completing the support unfolding operation, effectively reducing the amount of operation of personnel to improve the working efficiency of the device.

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 invention relates to a precast concrete sheet pile water stop structure. Grooves are formed in the splicing faces of the two sides of a sheet pile, and connecting pieces are arranged on the grooves; the connecting piece comprises a fixing part, a connecting part and water stopping parts, the two ends of the connecting part are connected with the fixing part and the water stopping parts correspondingly, the fixing part is located in the grooves and connected with the sheet pile, and the two water stopping parts on the two opposite grooves are matched with each other and form a first face and a second face which are attached to each other; the first surface is provided with at least one convex peak, and the second surface is provided with a concave valley matched with the convex peak. The prefabricated concrete sheet pile water stop structure has the following advantages that the first face and the second face are attached, it is guaranteed that the two water stop parts are tightly combined, and water seepage is prevented; compared with traditional grouting water stopping, construction is complex, cost is high, the connecting piece can be installed in advance, after the sheet piles are spliced, the first face and the second face are attached to each other, and the sheet piles are automatically pressed and closed under the back side water and soil pressure to achieve the good water stopping effect.

The utility model discloses a water stopping device and system for underground water layered monitoring, the water stopping device comprises a base body column and a water swelling rubber layer, and the water swelling rubber layer is arranged on the side surface of the base body column; the guide rings are arranged on the upper side and the lower side of the base body column and used for limiting the water swelling rubber layer; and the hollow pipe penetrates through the base body column and the guide ring. The defects that current single-hole layered monitoring work is mostly achieved through variable-diameter hole-forming construction or water stop plugs, but the variable-diameter hole-forming construction or the water stop plugs are large in occupied area, high in manufacturing cost, limited in monitored target layer and incapable of or not suitable for long-time water stop are overcome. The water swelling rubber layer containing the sodium polyacrylate super absorbent resin is adopted as a water stop material, the monitoring probe is lowered to a water-resisting layer between different water-bearing layers in cooperation with the connecting rod, and permanent monitoring of the multi-target water-bearing layer is achieved.

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 relates to the technical field of building construction, in particular to a roof double-layer inner drainage device which comprises a base layer and further comprises a pre-buried downpipe buried in the base layer, an annular wing plate is horizontally fixed to the top end of the outer side wall of the pre-buried downpipe, and the lower surface of the annular wing plate is attached to the upper surface of the base layer. A water stop ring is horizontally fixed to the outer side wall of the pre-buried downpipe and buried in the base layer, an inner drainage pipe is inserted into the pre-buried downpipe, a protective cover is installed at the top end of the inner drainage pipe, a positioning clamping ring is horizontally arranged on the outer side wall of the inner drainage pipe, and the lower surface of the positioning clamping ring is attached to the upper surface of the annular wing plate. The problems that according to an existing downpipe drainage system, the heat preservation performance is reduced and mildewing is caused due to the fact that water accumulation in a heat preservation layer cannot be effectively treated, accumulated water permeating into a roof from the roof damages a building structure, and a downpipe is prone to being blocked are solved.

The utility model discloses a dike ecological anti-seepage panel structure which comprises geotechnical cloth, a graded broken stone cushion layer, a plain concrete cushion layer, a reinforced concrete anti-seepage panel and a reinforced concrete wave wall. The geotechnical cloth, the graded broken stone cushion layer, the plain concrete cushion layer and the reinforced concrete anti-seepage panel are sequentially arranged on the surface-cleaned current embankment body from bottom to top; the reinforced concrete anti-seepage panel is divided into a horizontal section reinforced concrete anti-seepage panel and a slope section reinforced concrete anti-seepage panel, horizontal and longitudinal parting seams are arranged between the horizontal section reinforced concrete anti-seepage panel and the slope section reinforced concrete anti-seepage panel, and water stop copper sheets are arranged between the parting seams; the top of the reinforced concrete anti-seepage panel is connected with the reinforced concrete wave wall, and a water stop copper sheet is arranged between the top of the reinforced concrete anti-seepage panel and the reinforced concrete wave wall; the horizontal section reinforced concrete anti-seepage panel is provided with a tooth wall extending into the foundation; the reinforced concrete anti-seepage panel is provided with a notch, planting soil is laid on the notch, and green plants are planted on the notch for slope protection. The anti-seepage ecological landscape structure has the advantages of seepage prevention, ecological landscape, strong structural durability, and land and investment saving.

The utility model provides a waterstop detection device. The waterstop detection device comprises a detection bench; the two fixing assemblies are arranged on the detection table in a mirror image mode, and each fixing assembly comprises a movable plate arranged on the detection table in a sliding mode, a pushing piece arranged on the movable plate, two semi-conical clamping blocks arranged on the pushing piece and a locking ring which is arranged on the detection table in a sliding mode and is opposite to the conical surfaces of the two semi-conical clamping blocks; the driving assembly is connected with the two movable plates. According to the waterstop detection device, the two movable plates can move oppositely and slide towards the locking ring through the driving assembly, and when the semi-conical clamping blocks extend into the locking ring, the locking ring pushes and limits the conical surfaces of the semi-conical clamping blocks, so that the two semi-conical clamping blocks get close to each other and clamp and lock the waterstop. And then, the semi-conical clamping block and the locking ring continue to slide and stretch the water-stop belt, so that the automatic clamping and locking effect in the stretching test process of the water-stop belt is achieved.

The invention relates to the field of water conservancy construction waterproofing, and discloses a water conservancy project construction water stopping device which comprises a water stopping base frame. A water floating water stopping mechanism; the water floating water stopping mechanism is arranged on the front side of the water stopping base frame, and the water floating water stopping mechanism is used for automatically stopping water after the water level rises; the linkage water level prompting mechanism is triggered while the water stopping mechanism acts, the floating ball drives the water level prompting rod to move upwards along with rising of the water level, when the water level is high, the water level prompting rod moves upwards to the upper side of the water level prompting plate, and water conservancy constructors observe the position relation between the water level prompting rod and the water level prompting plate, so that the water level prompting rod can prompt the water level. The current water level condition can be visually known in real time, corresponding measures such as drainage strengthening and construction scheme adjusting can be conveniently taken in time, construction safety is ensured, the linkage prompting mechanism organically combines the water stopping action and water level monitoring, the timeliness and accuracy of water level monitoring are improved, and the water level monitoring efficiency is improved. And a more reliable guarantee is provided for safe construction of a water conservancy project.

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 utility model relates to the technical field of hydraulic engineering, in particular to an inter-aqueduct joint water stop device which comprises aqueduct bodies, aqueduct piers and waterproof assemblies, a plurality of aqueduct bodies are arranged in parallel, the adjacent aqueduct bodies are bonded through adhesives, the upper end faces of the aqueduct piers are connected with the aqueduct bodies, and the waterproof assemblies are connected to the upper end faces of the adjacent aqueduct bodies. According to the utility model, the telescopic component adjusts the width of the connecting plate to fit the joint between the connecting plate and the aqueduct, so that the deformation and damage of the connecting plate caused by thermal expansion and cold contraction of the aqueduct main body are avoided, and the adjusting component moves and drives the waterproof strip to move vertically, so that the waterproof strip clings to the inner wall of the aqueduct main body; water leakage caused by inclined displacement of the waterproof baffles due to abrasion of the waterproof strips or displacement and height difference of the aqueduct bodies is prevented, the positioning assemblies limit movement of the connecting plates in the vertical direction, and meanwhile the positioning assemblies limit movement of the aqueduct bodies on the two sides.

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 discloses an anti-seepage and water-stopping structure used in water conservancy and hydropower engineering, and specifically relates to the technical field of water conservancy and hydropower engineering, including a foundation soil layer, a dam body arranged on the top surface of the foundation soil layer, a water storage tank is fixedly installed on one side of the outer surface of the dam body, and a plurality of driving blocks are fixedly installed on the inclined side of the outer surface of the water storage tank, and a sliding rod is fixedly installed inside the driving block. The anti-seepage and water-stopping structure used in water conservancy and hydropower engineering described in the utility model, in actual work, when water waves hit the buffer plate, two support arms will push two moving blocks away from each other, so that the two moving blocks squeeze two buffer springs, and the elasticity of the buffer springs can reduce the impact force when the water waves hit, and the reinforcing ribs and the reinforcing plate can support the inside of the water storage tank when the water waves hit, so as to facilitate buffering when the water waves hit, so as to avoid shortening the service life of the water storage tank due to the hitting of the water waves.

The present invention discloses a water-stopping and leak-proofing structure and a water-stopping and leak-proofing method for a locking steel pipe pile cofferdam, comprising a first semi-arc plate, a second semi-arc plate and a third semi-arc plate, the inner concave surface of the second semi-arc plate can fit with the outer wall of the first locking steel pipe pile constituting the cofferdam, the inner concave surface of the third semi-arc plate can fit with the outer wall of the second locking steel pipe pile constituting the cofferdam, the first locking steel pipe pile and the second locking steel pipe pile are adjacent; one side of the outer convex surface of the first semi-arc plate is sealedly connected to one side of the outer convex surface of the second semi-arc plate, the other side of the outer convex surface of the first semi-arc plate is sealedly connected to one side of the outer convex surface of the third semi-arc plate, the top of the first semi-arc plate is flush with the tops of the second semi-arc plate and the third semi-arc plate, the bottom of the first semi-arc plate is flush with the bottoms of the second semi-arc plate and the third semi-arc plate, a cavity is formed between the outer convex surfaces of the first semi-arc plate, the second semi-arc plate and the third semi-arc plate, and the leak-proofing effect of the present invention is good.

The invention discloses a seabed vertical jacking riser section water stop frame and a construction method, the seabed vertical jacking riser section water stop frame comprises a water stop frame body arranged below a jacking opening and a water stop layer arranged on the inner side of the water stop frame body, and a plurality of grouting holes are formed in the periphery of the water stop frame body; the mud jacking hole is communicated with the inner side and the outer side of the water stop frame body, and a mud jacking valve is arranged at the mud jacking hole; when the jacking pipe joint penetrates through the jacking opening, the inner side of the water stopping layer abuts against the outer side of the jacking pipe joint, a gap between the outer side of the jacking pipe joint and the inner side of the water stopping frame body is blocked, and when water leaks in the gap between the outer side of the jacking pipe joint and the inner side of the water stopping frame body, the grouting valve is opened, and grouting is conducted on the inner side of the water stopping frame body, so that the water stopping purpose is achieved. The vertical jacking construction method has the effect of improving the water leakage problem in the vertical jacking construction process.

The utility model provides an anti-seepage structure for a reserved hole of a cast-in-place floor, which is used for solving the problems of poor plugging effect and easy water seepage of a pipeline and the reserved hole of the floor in the prior art. Comprising a pipe body, a plugging template, a plugging layer, an anti-seepage assembly and a sealing assembly, and the pipe body is arranged in a reserved hole of a floor in a penetrating mode; the plugging template sleeves the outer wall of the pipe body and abuts against the bottom of the floor slab; the plugging layer is filled between the inner wall of the floor reserved hole and the outer wall of the pipe body; the anti-seepage assembly comprises an inclined plate and a water stop plate, the two ends of the inclined plate are fixedly connected with the outer wall of the pipe body and one end of the water stop plate respectively, the water stop plate is horizontally arranged at the top of the floor and completely covers the plugging layer, at least two plugging holes are formed in the water stop plate and communicate with the plugging layer, and water seepage holes are formed in the outer wall of the pipe body. The water seepage holes are formed in the upper part of one end, fixedly connected with the inclined plate, of the pipe body; the sealing assembly is used for sealing the connecting position of the anti-seepage assembly and the floor. The structure can effectively prevent water leakage.

The invention relates to the technical field of buildings, in particular to a building waterproof expansion joint which comprises a water stop belt, a center plate and two building components. The water stop belt is fixedly arranged between the two building components. Each building component is provided with a supporting seat, and first cavities are defined between the two supporting seats and the center plate. A second cavity is defined between the center plate and the supporting base and the upper cover plate on the same side. A third cavity is defined by the two supporting bases, the center plate and the water stop belt. According to the waterproof expansion joint for the building, the supporting base, the center plate and the upper cover plate are adopted for primary water prevention, further water prevention is achieved through the water stop belt, after air in the first cavity enters the second cavity and the third cavity, a pressure barrier is formed in the second cavity and the third cavity, water is prevented from entering from the upper cover plate and the center plate, and the water-proof effect is achieved. And the waterproof effect of the building waterproof expansion joint is improved.