Grouting and leaking stoppage device and waterproof curtain grouting system applying same

Abstract

The utility model discloses a grouting and leaking stoppage device and a waterproof curtain grouting system applying the same. The grouting and leaking stoppage device comprises a cylindrical waterproof bag and a water injection pipeline arranged on one side of the waterproof bag. The water stopping bag comprises a cylindrical first bag body and a cylindrical second bag body arranged on the outer ring of the first bag body in a sleeving mode, the ends of the two bag bodies are sealed and provided with binding openings, a water injection cavity is formed between the first bag body and the second bag body, and the water injection pipeline is located at one end of the water stopping bag body and communicated with the water injection cavity. The waterproof curtain grouting system comprises the grouting leaking stoppage device and further comprises a grouting pipe, and the grouting pipe penetrates through the first bag. The grouting plugging device can plug a gap between a grouting pipe and a drill hole, effectively solves the problem of leakage at the drill hole of a waterproof curtain, is simple and compact in structure and convenient to operate, can be quickly operated, saves time and labor, and improves the construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of geological construction, in particular to a grouting plugging device and a water-stopping curtain grouting system using the grouting device. Background Art

[0002] In a foundation pit with a high groundwater level, when drilling, anchoring or soil nailing are carried out on highly permeable strata such as sand layers, silt sand and gravel, it is often necessary to drill through the water-stop curtain. After the water-stop curtain is drilled through, the drilling and grouting effect is likely to be poor, and a large amount of water seepage in the borehole may even cause local collapse. As the depth of the foundation pit increases, the groundwater pressure continues to increase, and the leakage in the gap between the borehole and the drill rod becomes serious. Not only can the construction effect not be guaranteed, but there are also huge safety hazards for construction personnel. The patent document with application number CN201010257603.1 discloses an anchor rod construction method for preventing drilling water from sandblasting. The waterproof plug is formed by preparing anti-spray filler and placing it in the borehole. The outer edge of the waterproof plug is tightly combined with the borehole wall on the water-stop curtain through the quick-setting material. The drill rod enters the back of the water-stop curtain from the waterproof plug, thereby blocking the channel of soil and water loss in the hole. This method requires the preparation of anti-spray filler before each construction, which consumes man-hours and affects construction efficiency. Utility Model Content

[0003] In order to solve the technical problem of easy leakage at the drilling holes of the water-stop curtain existing in the above-mentioned background technology, the utility model provides a grouting plugging device and a water-stop curtain grouting system using the same.

[0004] The technical solution of this utility model is as follows:

[0005] A grouting plugging device comprises a cylindrical water-stopping bag and a water injection pipe arranged on one side of the water-stopping bag. The water-stopping bag is placed at a drilling hole with leakage, and the inside of the water-stopping bag is filled through the water injection pipe to achieve plugging of the drilling hole.

[0006] The water-stopping bag comprises a first cylindrical bag and a second cylindrical bag sleeved on the outer ring of the first bag. The ends of the two bags are sealed and provided with binding openings. A water injection cavity is formed between the first bag and the second bag.

[0007] The water injection pipe is located at one end of the water-stopping bag and is connected to the water injection cavity. Slurry or water is filled into the water injection cavity through the water injection pipe. After the water injection cavity is filled, the first bag can be squeezed inwards and the second bag can be squeezed outwards.

[0008] Furthermore, a tightening piece is provided at one end of the water injection pipe away from the water injection chamber. After the water injection chamber is filled, the tightening piece is locked to prevent the liquid in the water injection pipe and the water injection chamber from being lost.

[0009] Further preferably, the length of the water-stopping bag is not less than 150 mm and not more than 200 mm, which can block the drilled holes in a larger range while avoiding excessive size and reducing waste of manufacturing materials.

[0010] As a preferred embodiment, the binding opening is an elastic opening, and the diameter of the elastic opening ranges from 14 mm to 22 mm. The elastic opening can tightly wrap pipes of different sizes.

[0011] Preferably, the inner diameter of the first bag is not less than 22 mm and not more than 25 mm, ensuring that various commonly used pipes can pass through the first bag during the construction process, so as to ensure that the water-stop bag can be located between the pipes and the drilled holes.

[0012] As a preferred embodiment, the material of the water-stop bag is EPDM rubber or non-woven fabric. EPDM rubber is a highly elastic and strong material with excellent aging resistance. Non-woven fabric has good water-repellent and breathable properties, and is antibacterial and alkali-corrosion-resistant, and is not easily affected by erosion.

[0013] A water-stop curtain grouting system includes the above-mentioned grouting plugging device and a grouting pipe, which is arranged through a first bag. After the grouting pipe passes through the first bag, it is placed together with the first bag at the drilled hole of the water-stop curtain to fill the gap between the grouting pipe and the drilled hole to avoid leakage.

[0014] Furthermore, the binding opening is tightly wrapped around the outer ring of the grouting pipe to prevent the water-stop bag from slipping during use.

[0015] During the specific construction process, if water seepage is found in the borehole during grouting drilling of the water-stop curtain, the grouting and plugging device will be immediately placed on the outer ring of the grouting pipe, and then the grouting pipe will be operated to pass through the borehole of the water-stop curtain, and the grouting and plugging device will be placed at the borehole. After determining the position, water is injected into the water injection cavity of the water-stop bag through the water injection pipe. After the water injection cavity is fully filled, the water-stop bag can squeeze the grouting pipe inward and the hole wall outward to seal the gap between the borehole and the grouting pipe, so as to avoid water seepage in the borehole. After the sealing is completed, the grouting pipe will be grouted.

[0016] Through the above design, the utility model provides a grouting plugging device and a water-stop curtain grouting system using the same, which can effectively solve the leakage phenomenon at the drilling hole of the water-stop curtain, and has a simple and compact structure, is easy to operate, can be operated quickly, saves time and effort, and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 A schematic diagram of a water-stop curtain grouting system in an embodiment;

[0019] Figure 2 A cross-sectional view of a grouting plugging device in an embodiment;

[0020] The components represented by the reference numerals in the figure are:

[0021] 1. Water-stop bag; 11. First bag; 12. Second bag; 13. Water injection cavity; 14. Binding port; 2. Water injection pipe; 21. Tightening piece; 3. Grouting pipe. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0023] Example

[0024] This embodiment first provides a grouting leak-stopping device, including a cylindrical water-stopping bag 1 and a water injection pipe 2 arranged on one side of the water-stopping bag 1. The water-stopping bag 1 is placed at a leaking drill hole, and the interior of the water-stopping bag 1 is filled through the water injection pipe 2 to seal the drill hole.

[0025] The water-stop bag 1 includes a first cylindrical bag 11 and a second cylindrical bag 12 sleeved on the outer circle of the first bag 11 . The ends of the two bags are sealed and provided with a binding opening 14 . A water injection cavity 13 is formed between the first bag 11 and the second bag 12 .

[0026] As a preferred embodiment, the material of the water-stop bag 1 is EPDM rubber or non-woven fabric. EPDM rubber is a highly elastic and strong material with excellent aging resistance. Non-woven fabric has good water-repellent and breathable properties, and is antibacterial and alkali-corrosion-resistant, and its strength is not easily affected by erosion.

[0027] Further preferably, the length of the water-stopping bag 1 is not less than 150 mm and not more than 200 mm, which can block the drilled holes in a larger range while avoiding being too large in size and reducing waste of manufacturing materials.

[0028] Preferably, the inner diameter of the first bag 11 is not less than 22 mm and not more than 25 mm, ensuring that various commonly used pipes can pass through the first bag 11 during the construction process, so as to ensure that the water-stop bag 1 can be located between the pipe and the drill hole.

[0029] As a preferred embodiment, the binding opening 14 is an elastic opening, and the diameter of the elastic opening ranges from 14mm to 22mm. The elastic opening can tightly wrap pipes of different sizes. The binding opening 14 may also not have an elastic structure, and directly adopt an inner diameter of 22mm, and tighten it with a nylon tie.

[0030] The water injection pipe 2 is located at one end of the water-stopping bag 1 and is connected to the water injection chamber 13. Slurry or water is filled into the water injection chamber 13 through the water injection pipe 2. When the water injection chamber 13 is filled, the first bag 11 can be squeezed inward and the second bag 12 can be squeezed outward.

[0031] Furthermore, a tightening piece 21 is provided at one end of the water injection pipe 2 away from the water injection chamber 13 . After the water injection chamber 13 is filled, the tightening piece 21 is locked to prevent the liquid in the water injection pipe 2 and the water injection chamber 13 from being lost.

[0032] The present embodiment also provides a water-stop curtain grouting system, including the above-mentioned grouting plugging device, and also includes a grouting pipe 3, which is arranged through the first bag 11. After passing through the first bag 11, the grouting pipe 3 is placed at the grouting drilled hole of the water-stop curtain to fill the gap between the grouting pipe 3 and the drilled hole to avoid leakage.

[0033] Furthermore, the binding opening 14 is tightly wrapped around the outer ring of the grouting pipe 3 to prevent the water-stopping bag 1 from slipping during use.

[0034] During the specific construction process, if water seepage is found in the borehole during grouting drilling of the water-stop curtain, the grouting and leak-proofing device is immediately mounted on the outer ring of the grouting pipe 3, and then the grouting pipe 3 is operated to pass through the borehole of the water-stop curtain, and the grouting and leak-proofing device is placed at the borehole. After determining the position, water is injected into the water injection cavity 13 of the water-stop bag 1 through the water injection pipe 2. After the water injection cavity 13 is fully filled, the water-stop bag 1 can squeeze the grouting pipe 3 inwardly and squeeze the hole wall outwardly to seal the gap between the borehole and the grouting pipe 3, so as to avoid water seepage in the borehole. After the sealing is completed, grouting of the grouting pipe 3 is started.

[0035] In a specific implementation, the water injection pipe 2 and the water injection cavity 13 can not only be injected with water, but also can be filled with curable slurry (such as cement slurry). If water is injected and filled, then after the grouting of the grouting pipe 3 is completed, the grouting pipe 3 is retracted, the tightening part 21 of the water injection pipe 2 is opened, the water in the water injection cavity is drained, the water-stop bag is recovered, and the borehole is immediately closed; if grouting is injected and filled, then after the grouting of the grouting pipe 3 is completed, the grouting pipe 3 is retracted, and the water-stop bag is directly closed at the borehole.

[0036] Through the above design, the utility model provides a grouting leak-proof device and a water-stop curtain grouting system using the same, which can effectively solve the leakage phenomenon at the drilling hole of the water-stop curtain, prevent the grouting slurry from being unable to solidify due to leakage and the subsequent possible safety hazards. The utility model has a simple and compact structure, is easy to operate, can be operated quickly, saves time and effort, and improves construction efficiency.

Claims

1. A grouting plugging device, characterized in that: It comprises a cylindrical water-stopping bag (1) and a water injection pipe (2) arranged on one side of the water-stopping bag (1); The water-stopping bag (1) comprises a first cylindrical bag (11) and a second cylindrical bag (12) sleeved on the outer ring of the first bag (11); the ends of the two bags are sealed and provided with a binding opening (14); a water injection cavity (13) is formed between the first bag (11) and the second bag (12); The water injection pipe (2) is located at one end of the water-stopping bag (1) and is connected to the water injection cavity (13).

2. A grouting plugging device according to claim 1, characterized in that: A tightening piece (21) is provided at one end of the water injection pipe (2) away from the water injection chamber (13).

3. A grouting plugging device according to claim 1, characterized in that: The length of the water-stopping bag is not less than 150 mm and not more than 200 mm.

4. A grouting plugging device according to claim 1, characterized in that: The binding opening (14) is an elastic opening, and the diameter of the elastic opening ranges from 14 mm to 22 mm.

5. A grouting plugging device according to claim 1, characterized in that: The inner diameter of the first pouch (11) is not less than 22 mm and not more than 25 mm.

6. A grouting plugging device according to claim 1, characterized in that: The material of the water-stop bag (1) is EPDM rubber or non-woven fabric.

7. A water-stop curtain grouting system, comprising a grouting plugging device according to any one of claims 1 to 5, characterized in that: It also comprises a grouting pipe (3), wherein the grouting pipe (3) is arranged through the first bag (11).

8. A water-stop curtain grouting system according to claim 7, characterized in that: The binding opening (14) is tightly wrapped around the outer ring of the grouting pipe (3).

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