Water injection type concrete diaphragm wall joint pipe

Abstract

The utility model provides a water injection type concrete diaphragm wall joint pipe which comprises a high-pressure flat hose, a pipe opening capable of injecting water into the high-pressure flat hose is formed in the top of the high-pressure flat hose, a balancing weight is arranged at the inner bottom of the high-pressure flat hose, a net bag is arranged at the outer bottom of the high-pressure flat hose in a sleeved mode, and a plurality of pull ropes are connected to the net bag. The other end of the pull rope extends to the top of the high-pressure flat hose and is used for winding and unwinding the high-pressure flat hose. A large-diameter high-pressure flat hose is sunk into a slotted hole of the diaphragm wall, a large-diameter vertical hole pipe is formed in a water filling manner, and a conventional steel joint pipe and a rubber inflatable diaphragm wall joint pipe are replaced in a manner of closing a pipe orifice of the high-pressure hose after water filling, so that the stability of internal pressure is ensured under the condition of bearing concrete pressure; the problems that the pulling force is too large in the pulling process of the super-large-diameter joint pipe, and the pulling time is difficult to master due to multiple pipe sections are solved, meanwhile, compared with an inflatable joint pipe, the pressure stability is better, the buoyancy influence is reduced, the safety is higher, and the cost is lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction field of cutoff wall, especially to a water injection type concrete cutoff wall joint pipe. BACKGROUND

[0002] In the construction of concrete cutoff wall, the joint pipe construction technology plays a crucial role in ensuring the continuity and impermeability of the wall. The existing technology requires that before pouring the concrete of the first-stage slot section, the joint pipe needs to be vertically and accurately lifted into the predetermined position of the slot hole with the help of professional lifting devices, ensuring the stability and good sealing of the pipe body. After the concrete enters the reasonable period from initial setting to final setting, the joint pipe is lifted slowly and gradually according to the established procedure using the lifting equipment, and the lifting force must be uniform and stable to make the joint pipe separate from the concrete and form a regular semicircular joint hole. During the construction of the second-stage slot section, the newly poured concrete can be closely connected with the joint hole, realizing the continuity and impermeability of the cutoff wall.

[0003] However, the current joint pipe technology has significant defects. The traditional rigid joint pipe is complex to connect and install due to the large number of pipe sections required for deep hole construction, making splicing difficult and severely affecting the sealing and stability. After the joint pipe is installed, it may tilt due to various factors, and even cannot be lowered to the bottom of the slot hole. In the pipe pulling process, the control of the pulling time becomes a key problem. If the pipe is pulled too early, the concrete does not reach the self-supporting strength, the joint hole wall may shrink and collapse, leading to construction failure. If the pipe is pulled too late, the concrete hardens and adheres to the joint pipe, increasing the friction force, which far exceeds the pulling force of the lifting equipment. In extreme cases, the joint pipe may be "cast" in the concrete, causing serious construction accidents, delaying the construction period, causing economic losses, and endangering the overall safety of the project.

[0004] The current Chinese patent CN218843169U discloses a rubber inflatable cutoff wall joint pipe, which uses an inflatable rubber capsule instead of a joint pipe, making it easy and simple to install and pull out, and reusable. However, the pressure stability of the rubber capsule is difficult to guarantee, and the construction process needs to be continuously and accurately monitored and the inflation pressure needs to be adjusted in time, which is complicated. Moreover, due to the large material buoyancy, the construction operation difficulty is increased, higher requirements are put forward for the construction technology and process, and the widespread application in actual projects is limited. Therefore, a water injection type concrete cutoff wall joint pipe is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a water injection type concrete cutoff wall joint pipe to solve the problems of excessive pulling force in the pulling process of the super-large diameter joint pipe, difficult to grasp the pulling time, difficult to guarantee the pressure stability of the inflatable rubber capsule, and large material buoyancy increasing the construction operation difficulty, and higher requirements for the construction technology and process.

[0006] To solve the above technical problems, the utility model adopts the technical scheme: a water injection type concrete anti -seepage wall joint pipe, including high -pressure flat hose, the top of high -pressure flat hose is provided with the pipe orifice that can inject water to its inside, the inner bottom of high -pressure flat hose is provided with counterweight, the outer bottom is equipped with net bag, be connected with a plurality of pull rope on the net bag, the other end of pull rope extends to the top of high -pressure flat hose for receiving and releasing high -pressure flat hose.

[0007] In the preferred embodiment, the bottom end of the pull rope is connected to the net bag at multiple points through multiple bottom locks.

[0008] The high -pressure flat hose, the pull rope and the net bag are externally provided with a release agent.

[0009] In the preferred embodiment, the high -pressure flat hose is externally provided with multiple groups of connecting ears, the number of groups of connecting ears corresponds to the number of pull ropes, the number of connecting ears in each group is multiple and arranged vertically, and multiple side connecting locks are arranged on the pull rope, the side connecting locks are connected to the corresponding connecting ears.

[0010] In the preferred embodiment, the counterweight includes high -density particles filled in the inner bottom of the high -pressure flat hose, and a sealing sheet arranged above the high -density particles to seal them.

[0011] In the preferred embodiment, the high -pressure flat hose includes a woven main body located in the middle, and a thermoplastic elastomer is arranged on both sides of the woven main body.

[0012] In the preferred embodiment, the woven main body is a polyester woven body and / or an aramid woven body.

[0013] In the preferred embodiment, an upper valve hole of the high -pressure flat hose is provided with a valve hole, which is used to connect a pressurizing device or an air extraction device.

[0014] In the preferred embodiment, a closing assembly for closing the pipe orifice is further included, which includes a sealing rubber plate that can be placed in the pipe orifice, and two clamping plates that clamp the pipe orifice from the outside, the length of the sealing rubber plate is adapted to the length of the pipe orifice in the flat state, the sealing rubber plate and the top of the two clamping plates are provided with a plurality of corresponding connecting seats, a top bolt nut is arranged between the corresponding connecting seats, and end bolt nuts are further arranged at both ends of the two clamping plates.

[0015] In the preferred embodiment, the opposite sides of the two clamping plates are provided with clamping sealing strips.

[0016] In the preferred embodiment, the two sides of the sealing rubber plate are provided with inner embedding grooves corresponding to the clamping sealing strips.

[0017] The utility model provides a kind of water injection type concrete cutoff wall joint pipe, by adopting large-diameter high-pressure flat hose sinks into cutoff wall slot hole, to form large-diameter vertical hole pipe in water filling mode, the mode of closing high-pressure hose nozzle after water filling replaces conventional steel joint pipe and rubber inflatable cutoff wall joint pipe, to meet the case of being able to withstand concrete pressure, ensure its internal pressure stability, solve the problem that the pipe pulling process of super-large diameter joint pipe is too large, and the pipe segment is not good to grasp when pulling, compared with inflatable joint pipe, the pressure stability is better, reduce buoyancy influence, higher safety and lower cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further described below in connection with drawings and examples:

[0019] Figure 1 It is the flat state structure diagram of high-pressure flat hose of the utility model;

[0020] Figure 2 It is the inflation state structure diagram of high-pressure flat hose of the utility model;

[0021] Figure 3 It is the half cut structure diagram of high-pressure flat hose of the utility model;

[0022] Figure 4 It is the utility model Figure 1 A structure enlarged view in;

[0023] Figure 5 It is the utility model Figure 3 B structure enlarged view in;

[0024] Figure 6 It is the structure diagram of closed assembly of the utility model;

[0025] Figure 7 It is the explosion structure diagram of closed assembly of the utility model;

[0026] In the drawing: high-pressure flat hose 1;Thermoplastic elastomer 101;Braided main body 102;Pipe opening 2;Counterweight 3;Large density fine particle 301;Sealing sheet 302;Mesh bag 4;Pulling rope 5;Bottom lock 6;Connecting lug 7;Closed assembly 8;Sealing rubber plate 801;Clamp plate 802;Clamping sealing strip 803;Connecting seat 804;Top bolt nut 805;End bolt nut 806;Inlay groove 807;Valve hole 9;Side connecting lock 10. DETAILED DESCRIPTION

[0027] Example 1

[0028] As Figures 1-5As shown, a water injection type concrete cutoff wall joint pipe comprises a high-pressure flat hose 1, the high-pressure flat hose 1 comprises a woven main body 102 in the middle, the woven main body 102 is provided with a thermoplastic elastomer 101 on the inner and outer sides, and the woven main body 102 is a polyester woven body and / or an aramid woven body, wherein the woven main body 102 is a main body frame, and the thermoplastic elastomer 101 serves as an inner liner and an outer liner. In the manufacturing process, the woven main body 102 is first woven into the skeleton structure of the hose. The structure gives the hose basic compression and tensile resistance by virtue of the high strength and high toughness of the woven fibers. Then, the thermoplastic elastomer 101 is uniformly and firmly attached to the inner and outer surfaces of the woven main body 102. The thermoplastic elastomer 101 has excellent flexibility, sealing performance and certain wear resistance. In cooperation with the woven main body 102, the high-pressure flat hose 1 has multiple advantages of softness, bendability, wear resistance and high pressure resistance, so that the high-pressure flat hose 1 can stably operate in a complex and harsh working environment.

[0029] It should be noted that the diameter of the high-pressure flat hose 1 is the same as the thickness of the cutoff wall, the wall thickness is 3-5 mm, and the pipe length is slightly greater than the depth of the cutoff wall slot hole.

[0030] The top of the high-pressure flat hose 1 is provided with a pipe opening 2 through which water can be injected into the interior of the high-pressure flat hose 1. After the high-pressure flat hose 1 is placed in the cutoff wall slot hole, water can be injected into the interior of the high-pressure flat hose 1 through the pipe opening 2, so that the high-pressure flat hose 1 is inflated to the shape of a joint pipe, and then the pipe opening 2 is closed. Thus, the internal pressure stability is ensured under the condition that the concrete pressure can be borne. Compared with the inflatable joint pipe, the incompressibility of water makes the joint pipe after water injection relatively easier in pressure control, and water in a certain range will not easily produce large volume fluctuations due to pressure changes like gas, so it is not necessary to frequently monitor and adjust the pressure like inflation, which reduces the complexity and difficulty of operation, and can more stably play the role of the joint pipe, reduces construction problems caused by unstable pressure, and because the density of water is greater than that of air, the overall weight of the joint pipe after water injection is relatively increased, which can effectively reduce the inconvenience caused by large buoyancy, makes the position of the joint pipe in the slot hole more stable, and is beneficial to ensure the construction quality and reduce the situation that the position of the joint pipe deviates or is difficult to accurately set to the bottom due to buoyancy problems.

[0031] A counterweight 3 is arranged at the inner bottom of the high-pressure flat hose 1, which is used to offset the buoyancy in the process of lowering and filling the hose, and to ensure that the hose sinks smoothly to the predetermined depth. In the embodiment, the counterweight 3 comprises high-density particles 301 filled in the inner bottom of the high-pressure flat hose 1, such as sandstone materials, and a sealing sheet 302 arranged above the high-density fine particles 301 to seal them. The sealing sheet 302 can be made of the same material as the thermoplastic elastomer 101.

[0032] The outer bottom of the high-pressure flat hose 1 is sleeved with a mesh bag 4, which is a steel wire mesh bag. The mesh bag is woven with high-strength corrosion-resistant steel wire, and has fine and moderate mesh holes, which can hold and protect the hose and prevent the hose from being damaged by tension. A plurality of pull ropes 5 are connected to the mesh bag 4, and the other ends of the pull ropes 5 extend to the top of the high-pressure flat hose 1, which is used to wind and unwind the high-pressure flat hose 1. In this embodiment, the pull ropes 5 are steel wire ropes, and the number of the pull ropes 5 is four, which are evenly distributed around the mesh bag 4.

[0033] In the preferred embodiment, the bottom ends of the pull ropes 5 are connected to the mesh bag 4 by a plurality of bottom locks 6, thereby ensuring the stability of winding and unwinding.

[0034] In the preferred embodiment, a plurality of groups of connecting ears 7 are arranged on the outside of the high-pressure flat hose 1, and the number of the groups of connecting ears 7 corresponds to the number of the pull ropes 5. Each group of connecting ears 7 has a plurality of connecting ears 7 arranged vertically. A plurality of side connecting locks 10 are arranged on the pull ropes 5, and the side connecting locks 10 are connected to the corresponding connecting ears 7.

[0035] In this way, the pull ropes 5 can closely adhere to the pipe wall throughout the process, and the steel wire ropes can uniformly transmit the force, thereby effectively sharing the tension of the hose during lowering and lifting, preventing the hose from being damaged due to excessive local stress, and protecting the integrity of the hose structure in all directions.

[0036] It should be noted that the side connecting locks 10 and the bottom locks 6 mentioned in this embodiment are special locks for steel wire ropes, which are common products on the market, and therefore will not be described in detail. In addition, before lowering the high-pressure flat hose 1, a release agent that is easy to release should be applied to the outer surface of the high-pressure flat hose 1, the pull ropes 5 and the mesh bag 4.

[0037] In the preferred embodiment, a closable valve hole 9 is arranged above the high-pressure flat hose 1, which is used to connect a pressurizing device or a vacuumizing device. Through the valve hole 9, the pressurizing device or the vacuumizing device can be connected when the pipe opening 2 is closed, thereby facilitating pressure stabilization during use and vacuumizing during recovery.

[0038] In use, the high-pressure flat hose 1 is smoothly lifted by a hoisting lifting device through the pull ropes 5, and is slowly lowered into the diaphragm wall slot hole. During the process, the stress state of the steel wire rope and the verticality of the hose are closely observed. After being lowered in place, the bottom is lifted to be suspended, which is not more than 100 cm. After being vertically placed for a period of time, the hose is sunk to the bottom. Water is injected into the hose until it is filled, and then the pipe opening 2 is closed to prevent water leakage and air mixing. Then, the pressurizing device is connected, and the concrete pouring operation outside the pipe is started. After the concrete pouring outside the pipe reaches the top and exceeds the final setting time of the concrete, the pipe opening 2 is opened to put the deep well submersible pump to pump out the water in the pipe, and then the pipe opening 2 is closed again. The vacuumizing device is started to vacuumize the inside of the hose to reach a vacuum state. The hose is smoothly separated from the concrete by using the principle of negative pressure. Finally, the hose is completely taken out of the slot hole at a stable low speed by using the hoisting lifting device.

[0039] Example 2

[0040] Further explanation in conjunction with Example 1, such as Figures 6-7 The structure shown also includes a sealing assembly 8 for sealing the pipe opening 2, which includes a sealing rubber plate 801 that can be placed in the pipe opening 2 and two clamping plates 802 that hold the pipe opening 2 from the outside. The length of the sealing rubber plate 801 is adapted to the length of the pipe opening 2 in its flat state, so that the sealing rubber plate 801 can be placed into the pipe opening 2. The top of the sealing rubber plate 801 and the two clamping plates 802 are provided with a plurality of corresponding connecting seats 804. The corresponding connecting seats 804 are provided with top bolts and nuts 805. The two clamping plates 802 and the sealing rubber plate 801 are connected by the top bolts and nuts 805. By tightening the nuts, the two clamping plates 802 clamp the sealing rubber plate 801 to achieve the effect of sealing the pipe opening 2. The two clamping plates 802 are also provided with end bolts and nuts 806 located at both ends, thereby further improving the locking force. The ends of the clamping plates 802 and the connecting seats 804 are provided with holes for bolts to pass through.

[0041] Both clamping plates 802 are provided with clamping sealing strips 803 on opposite sides. The sealing performance is improved by the compression deformation of the clamping sealing strips 803 when they are locked with the sealing rubber plate 801.

[0042] Both sides of the sealing rubber plate 801 are provided with embedded grooves 807 corresponding to the clamping sealing strip 803, so that the clamping sealing strip 803 can be embedded in the embedded grooves 807, further improving the sealing performance.

[0043] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A grout-tight concrete diaphragm wall joint pipe, characterized by: The utility model provides a high pressure flat hose (1), the top of high pressure flat hose (1) is provided with the pipe orifice (2) that can inject water to its inside, the inner bottom of high pressure flat hose (1) is provided with counterweight (3), the outer bottom is equipped with net bag (4), net bag (4) is connected with a plurality of pull rope (5), the other end of pull rope (5) extends to the top of high pressure flat hose (1), is used for the take -up of high pressure flat hose (1).

2. The grout-tight diaphragm wall joint pipe according to claim 1, characterized in that: The bottom end of the pull rope (5) is connected to the net bag (4) by a plurality of bottom locks (6). The high pressure flat hose (1), the pull rope (5) and the net bag (4) are provided with a release agent outside.

3. The grout-tight diaphragm wall joint pipe according to claim 1 or 2, characterized in that: The high pressure flat hose (1) is provided with a plurality of connecting ears (7) outside, the number of connecting ears (7) corresponds to the number of pull ropes (5), the number of each group of connecting ears (7) is multiple and vertically arranged, a plurality of side connecting locks (10) are arranged on the pull rope (5), and the side connecting locks (10) are connected with the corresponding connecting ears (7).

4. The grout-tight diaphragm wall joint pipe according to claim 1, wherein: The counterweight (3) includes high-density particles (301) filled in the inner bottom of the high pressure flat hose (1), and a sealing sheet (302) arranged above the high-density particles (301) to seal the high-density particles (301).

5. The grout-tight diaphragm wall joint pipe according to claim 1, characterized in that: The high pressure flat hose (1) includes a woven main body (102) in the middle, and thermoplastic elastomers (101) are arranged on the inner and outer sides of the woven main body (102).

6. The grout-tight diaphragm wall joint pipe according to claim 5, characterized in that: The woven main body (102) is a polyester woven body and / or an aramid woven body.

7. The grout-tight diaphragm wall joint pipe according to claim 1, characterized in that: An upper valve hole (9) of the high pressure flat hose (1) is provided with a sealing rubber plate (801) that can be placed in the pipe orifice (2), and two clamping plates (802) that clamp the pipe orifice (2) from the outside, the length of the sealing rubber plate (801) is adapted to the length of the pipe orifice (2) in the flat state, the sealing rubber plate (801) and the top of the two clamping plates (802) are provided with a plurality of corresponding connecting seats (804), a top bolt nut (805) is arranged between the corresponding connecting seats (804), and end bolt nuts (806) are further arranged at both ends of the two clamping plates (802).

8. The grout-tight diaphragm wall joint pipe according to claim 1, characterized in that: The opposite sides of the two clamping plates (802) are provided with clamping sealing strips (803).

9. The grout-tight diaphragm wall joint pipe according to claim 8, characterized in that: The two sides of the sealing rubber plate (801) are provided with inner embedding grooves (807) corresponding to the clamping sealing strips (803).

10. The grout-tight diaphragm wall joint pipe according to claim 9, characterized in that: ​

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