Device for detecting water leakage at joint of upper wall and lower pile and plugging and repairing method

Abstract

The invention discloses an upper-wall lower-pile joint water leakage detection device and a plugging repair method, and relates to the technical field of constructional engineering.The upper-wall lower-pile joint water leakage detection device comprises a pressurized water injection system, an automatic water pumping system, a pressurized grouting system and a reinforcement cage body, a vertical pipe is installed in the reinforcement cage body, a circular pipe is connected with the bottom of the vertical pipe, and a grouting small hole is formed in the circular pipe; an early warning sensor is installed on the inner wall of the joint of the vertical pipe and the circular pipe, and pressure-bearing rubber pipes are arranged in the vertical pipe and the circular pipe. A round pipe, a vertical pipe, a pressure-bearing rubber pipe and an early warning sensor are installed in advance, after concrete is condensed to a certain degree, whether water enters the pipe or not is judged according to whether the early warning sensor gives an alarm or not, then whether a leakage point exists or not is judged, if the leakage point exists, cement grout is injected through a pressurization grouting system, and if not, a joint between an upper wall and a lower pile is tight, and the leakage point is not damaged. According to the method, the pipe is filled with the cement mortar with the strength grade of the upper wall and the lower pile, and leakage points can be found in advance and repaired.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a water leakage detection device at a joint of an upper wall and a lower pile and a blocking and repairing method. Background Art

[0002] In recent years, in order to solve the problem of underground continuous wall entering rock and trench wall stability in soft upper and hard lower composite strata, a construction technology of underground continuous wall with upper wall and lower piles has emerged. However, due to the limitations of current construction technology and construction process, especially the uncertain factors under complex geological conditions, leakage will occur at the joints of upper wall, lower pile and pile wall due to loose concrete pouring.

[0003] In the prior art, it is impossible to accurately detect whether there is leakage at the joints of the wall groove sections before the foundation pit soil is excavated and the ground-connected wall is exposed. Most of the time, the leakage points are found afterwards and then targeted plugging is carried out. In addition, due to the location of the leakage point, the plugging measures are costly and the plugging construction work is difficult.

[0004] Therefore, there is an urgent need for a water leakage detection device and a sealing and repair method at the joint between the upper wall and the lower pile to solve the above problems. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a water leakage detection device and a blocking and repair method for the joint between an upper wall and a lower pile, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for detecting water leakage at the joint between an upper wall and a lower pile comprises: a pressurized water injection system, an automatic water pumping system, a pressurized grouting system and a steel cage body, wherein the upper portion of the steel cage body is a wall steel cage, and the lower portion of the steel cage body is a pile steel cage, a plurality of groups of vertical pipes are installed at equal intervals in the wall steel cage, a circular pipe is installed at the connection between the wall steel cage and the pile steel cage, the circular pipe is connected to the bottom of the vertical pipe and communicated with the interior thereof, a plurality of groups of grouting holes are opened on the circular pipe, an early warning sensor is installed on the inner wall of the connection between the vertical pipe and the circular pipe, an integrated pressure-bearing rubber hose is arranged in the vertical pipe and the circular pipe, the pressurized water injection system is used to fill water and pressurize the pressure-bearing rubber hose, the automatic water pumping system is used to extract clean water from the pressure-bearing rubber hose, and the pressurized grouting system is used to pressurize and grout the vertical pipe and the circular pipe.

[0008] As a further solution of the present invention: the height of the vertical pipe is higher than the height of the wall reinforcement cage.

[0009] As a further solution of the present invention: the vertical pipe and the circular pipe are both steel pipes.

[0010] As a further solution of the present invention: the number of the vertical tubes, circular tubes and pile reinforcement cages is consistent.

[0011] A method for sealing and repairing a joint between an upper wall and a lower pile, comprising the above-mentioned device for detecting water leakage at a joint between an upper wall and a lower pile, and further comprising the following steps:

[0012] S1: Tie the vertical pipe inside the wall reinforcement cage, tie the round pipe at the connection between the wall reinforcement cage and the pile reinforcement cage, place the unfilled pressure-bearing rubber hose inside the vertical pipe and the round pipe, and lower the reinforcement cage body into the hole;

[0013] S2: Place the pressurized water injection system, the automatic water pumping system and the pressurized grouting system on the ground, connect the pressurized water injection system with the pressure-bearing rubber hose, and use the pressurized water injection system to fill the pressure-bearing rubber hose with water and pressurize it to expand it and fill the vertical pipe and the circular pipe cavity, and then pour;

[0014] S3: After the concrete pouring of the upper wall and the lower pile is completed and the concrete solidifies to a suitable strength, the water inside the pressure-bearing rubber hose is pumped out by the automatic pumping system, and then the pressure-bearing rubber hose is pulled out;

[0015] S4: Wait for a period of time: that is, to ensure that the external water can penetrate into the circular tube; if there is water leakage, the water enters the tube through the grouting holes and passes through the early warning sensor, then the early warning sensor will sound an alarm, and then use the automatic pumping system on the ground to drain the water entering the tube, and then use the pressurized grouting system to perform pressurized grouting into the tube. Under the action of pressure, the slurry is injected into the concrete gap around the steel pipe through the grouting holes on the circular tube, filling the concrete densely to achieve the effect of plugging the leak; if there is no water, the joints of the upper wall and lower piles are tight and no treatment is required. Only the pressurized grouting system needs to be used to fill the tube with cement mortar of the strength grade of the upper wall and lower piles.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention installs several groups of circular tubes, vertical tubes, pressure-bearing rubber tubes and early warning sensors with several grouting holes on the steel cage body in advance. After the concrete solidifies to a certain extent, it is judged whether water enters the tube by whether the early warning sensor alarms, and then whether there is a leakage point. If a leakage point is found, cement slurry is injected into the tube through a pressurized grouting system. The cement slurry is injected into the concrete gap around the steel pipe through the grouting holes to fill the concrete densely to achieve the effect of plugging the leakage. If there is no leakage, the joints between the upper wall and the lower piles are tight and do not need to be processed. Only cement mortar with the strength grade of the upper wall and the lower piles needs to be filled in the tube. The present invention can find the leakage point in advance and repair it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1The present invention is a schematic structural diagram of a device for detecting water leakage at a joint between an upper wall and a lower pile according to an embodiment of the present invention.

[0019] In the figure: 1. Vertical pipe; 2. Pressure-bearing rubber hose; 3. Circular pipe; 4. Early warning sensor; 5. Pressurized water injection system; 6. Automatic pumping system; 7. Pressurized grouting system. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the embodiment of the present invention, please refer to Figure 1 , a water leakage detection device and a sealing and repair method for the joint of an upper wall and a lower pile, comprising: a pressurized water injection system 5, an automatic water pumping system 6, a pressurized grouting system 7 and a steel cage body, the upper part of the steel cage body is a wall steel cage, the lower part of the steel cage body is a pile steel cage, a plurality of groups of vertical pipes 1 are installed at equal intervals in the wall steel cage, a circular pipe 3 is installed at the connection between the wall steel cage and the pile steel cage, the circular pipe 3 is connected to the bottom of the vertical pipe 1 and communicated with the inside thereof, a plurality of groups of grouting holes are opened on the circular pipe 3, an early warning sensor 4 is installed on the inner wall of the connection between the vertical pipe 1 and the circular pipe 3, an integrated pressure-bearing rubber hose 2 is arranged in the vertical pipe 1 and the circular pipe 3, the pressurized water injection system 5 is used to fill water and pressurize the pressure-bearing rubber hose 2, the automatic water pumping system 6 is used to extract the clean water in the pressure-bearing rubber hose 2, and the pressurized grouting system 7 is used to pressurize and grout in the vertical pipe 1 and the circular pipe 3.

[0022] In this embodiment, the pressurized water injection system 5 can use a booster water pump connected to the pressure-bearing rubber hose 2 placed in the vertical pipe 1, and use a hose joint to connect the joint of the booster water pump to the pressure-bearing rubber hose 2 to perform pressurized water injection;

[0023] The pressurized grouting system 7 is composed of a grouting pump and a grouting pipeline, the grouting pipeline is connected to the vertical pipe 1, and is connected by bolts, and then the grouting pipeline is extended to the connection between the vertical pipe 1 and the circular pipe 3, and static pressure grouting is adopted;

[0024] The automatic water pumping system 6 is composed of an automatic pressurized water pump and a water pumping pipeline, which are connected by bolts, and then the water pumping pipeline is extended to the connection between the vertical pipe 1 and the circular pipe 3 to pump water.

[0025] In this embodiment, the purpose of using the pressure-bearing rubber hose 2 is to pressurize and inject water into the pressure-bearing rubber hose 2 before pouring concrete, so that it expands and fills the inner walls of the vertical pipe 1 and the circular pipe 3 to prevent the vertical pipe 1 and the circular pipe 3 from being damaged due to air pressure. When the concrete solidifies to a certain extent, the water in the pressure-bearing rubber hose 2 is pumped out by the automatic pumping system 6, making it easier to pull out the pressure-bearing rubber hose 2.

[0026] As an embodiment of the present invention, please refer to Figure 1 The height of the vertical pipe 1 is higher than the height of the wall reinforcement cage, so as to facilitate the subsequent pressurized water injection, pumping and pressurized grouting operations.

[0027] As an embodiment of the present invention, the vertical pipe 1 and the circular pipe 3 are both steel pipes, so as to prevent the vertical pipe 1 and the circular pipe 3 from being damaged due to excessive external concrete pressure.

[0028] As an embodiment of the present invention, the number of the vertical pipes 1, the circular pipes 3 and the pile reinforcement cages is the same.

[0029] A method for sealing and repairing a joint between an upper wall and a lower pile, comprising the above-mentioned device for detecting water leakage at a joint between an upper wall and a lower pile, and further comprising the following steps:

[0030] S1: Tie the vertical pipe 1 inside the wall reinforcement cage, tie the circular pipe 3 at the connection between the wall reinforcement cage and the pile reinforcement cage, place the unfilled pressure-bearing rubber hose 2 inside the vertical pipe 1 and the circular pipe 3, and lower the reinforcement cage body into the hole;

[0031] S2: placing the pressurized water injection system 5, the automatic water pumping system 6 and the pressurized grouting system 7 on the ground, connecting the pressurized water injection system 5 with the pressure-bearing rubber hose 2, and the pressurized water injection system 5 fills water into the pressure-bearing rubber hose 2 to make it expand and fill the inner cavity of the vertical pipe 1 and the circular pipe 3, and then pouring;

[0032] S3: After the concrete pouring of the upper wall and the lower pile is completed and the concrete solidifies to a suitable strength, the automatic pumping system 6 is used to pump out the clean water inside the pressure-bearing rubber hose 2, and then the pressure-bearing rubber hose 2 is pulled out;

[0033] S4: Wait for a period of time: that is, to ensure that the external water can penetrate into the circular tube 3; if there is water leakage, the water enters the tube through the grouting holes and passes through the early warning sensor 4, then the early warning sensor 4 sends out an alarm, and then the automatic pumping system 6 is used on the ground to drain the water entering the tube, and then the pressurized grouting system 7 is used to perform pressurized grouting in the tube. Under the action of pressure, the slurry is injected into the concrete gap around the steel pipe through the grouting holes on the circular tube 3, and the concrete is filled densely to achieve the effect of plugging the leak; if there is no water, the joints of the upper wall and lower piles are tight and no treatment is required. Only the pressurized grouting system 7 needs to be used to fill the tube with cement mortar of the strength grade of the upper wall and lower piles.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water leakage detection device at the joint of upper wall and lower pile, characterized in that: include: A pressurized water injection system, an automatic water pumping system, a pressurized grouting system and a steel cage body, wherein the upper part of the steel cage body is a wall steel cage, and the lower part of the steel cage body is a pile steel cage. Several groups of vertical pipes are installed at equal intervals in the wall steel cage, and a circular pipe is installed at the connection between the wall steel cage and the pile steel cage. The circular pipe is connected to the bottom of the vertical pipe and communicates with the interior thereof. Several groups of grouting holes are opened on the circular pipe, and an early warning sensor is installed on the inner wall of the connection between the vertical pipe and the circular pipe. An integrated pressure-bearing rubber hose is provided in the vertical pipe and the circular pipe. The pressurized water injection system is used to fill water and pressurize the pressure-bearing rubber hose, and the automatic water pumping system is used to extract clean water from the pressure-bearing rubber hose, and the pressurized grouting system is used to pressurize and grout into the vertical pipe and the circular pipe.

2. A water leakage detection device for the joint between upper wall and lower pile according to claim 1, characterized in that: The height of the vertical pipe is higher than the height of the wall reinforcement cage.

3. The device for detecting water leakage at the joint between the upper wall and the lower pile according to claim 1, characterized in that: The vertical pipe and the circular pipe are both steel pipes.

4. A water leakage detection device for the joint between upper wall and lower pile according to claim 1, characterized in that: The number of the vertical tubes, circular tubes and pile reinforcement cages is the same.

5. A method for sealing and repairing the joint between an upper wall and a lower pile, comprising a device for detecting water leakage at the joint between an upper wall and a lower pile as claimed in any one of claims 1 to 4, characterized in that: The following steps are also included: S1: Tie the vertical pipe inside the wall reinforcement cage, tie the round pipe at the connection between the wall reinforcement cage and the pile reinforcement cage, place the unfilled pressure-bearing rubber hose inside the vertical pipe and the round pipe, and lower the reinforcement cage body into the hole; S2: Place the pressurized water injection system, the automatic water pumping system and the pressurized grouting system on the ground, connect the pressurized water injection system with the pressure-bearing rubber hose, and use the pressurized water injection system to fill the pressure-bearing rubber hose with water and pressurize it to expand it and fill the vertical pipe and the circular pipe cavity, and then pour; S3: After the concrete pouring of the upper wall and the lower pile is completed and the concrete solidifies to a suitable strength, the water inside the pressure-bearing rubber hose is pumped out by the automatic pumping system, and then the pressure-bearing rubber hose is pulled out; S4: Wait for a period of time: that is, to ensure that the external water can penetrate into the circular tube; if there is water leakage, the water enters the tube through the grouting holes and passes through the early warning sensor, then the early warning sensor will sound an alarm, and then use the automatic pumping system on the ground to drain the water entering the tube, and then use the pressurized grouting system to perform pressurized grouting into the tube. Under the action of pressure, the slurry is injected into the concrete gap around the steel pipe through the grouting holes on the circular tube, filling the concrete densely to achieve the effect of plugging the leak; if there is no water, the joints of the upper wall and lower piles are tight and no treatment is required. Only the pressurized grouting system needs to be used to fill the tube with cement mortar of the strength grade of the upper wall and lower piles.

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