Mould bag grouting rapid pipe embedding device for high-pressure water gushing plugging and construction method

Abstract

The invention discloses a mold bag grouting rapid pipe embedding device for high-pressure water gushing plugging and a construction method, and relates to the technical field of tunnel and underground engineering waterproof plugging. Comprising a slurry jetting pipe, the outer wall of the slurry jetting pipe is fixedly connected with a mold bag structure through an end pipe clamp, and the interior of the mold bag structure is grouted to block a water gushing opening. Through the synergistic effect of the mold bag material and the grouting process, rapid fixing and sealing of the orifice pipe under the high-pressure water gushing condition are achieved, the problems that a traditional pipe embedding process is prone to failure and low in efficiency are solved, and the safety and reliability of inclined shaft water plugging construction are improved.

Description

Technical Field

[0001] The invention relates to the technical field of waterproofing and plugging of tunnels and underground projects, and in particular to a mold bag grouting rapid pipe-inserting device and a construction method for high-pressure water gushing plugging. Background Art

[0002] In traditional inclined shaft grouting and water plugging construction, the orifice pipe is often fixed by pre-buried steel pipes and then poured with cement slurry. However, under high-pressure water gushing conditions, the following problems exist: 1. The slurry is easily dispersed: the high-pressure water flow causes the cement slurry to be diluted or washed away before solidification, making it difficult to form an effective seal; 2. The construction efficiency is low: multiple repeated grouting processes are required, the process is complicated, and it takes a long time; 3. There are great safety hazards: the water gushing pressure can easily cause the orifice pipe to loosen or even spray out, threatening construction safety.

[0003] The existing technology lacks a fast and stable pipe-inserting solution for high-pressure dynamic water environments, and innovative processes are urgently needed to improve plugging efficiency and safety. Therefore, it is necessary to provide a mold bag grouting fast pipe-inserting device and construction method for high-pressure water-gushing plugging. Summary of the invention

[0004] The main purpose of the present invention is to provide a mold bag grouting rapid pipe insertion device and construction method for high-pressure water gushing plugging, which is particularly suitable for the rapid insertion and grouting plugging of orifice pipes under high-pressure water gushing conditions at great burial depths, so as to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A mold bag grouting rapid pipe-inserting device for high-pressure water gushing plugging comprises a grouting pipe, the outer wall of which is fixedly connected to a mold bag structure through an end pipe clamp, and the internal grouting of the mold bag structure is used to plug the water gushing outlet.

[0007] Furthermore, the mold bag structure includes a mold bag and a plurality of mold bag grouting pipes, the mold bag grouting pipes are used for grouting or exhaust, a plurality of flower holes are provided on the mold bag grouting pipes, the mold bag grouting pipes are arranged inside the mold bag, and one end of the mold bag grouting pipes extends out of the mold bag, and the mold bag and the mold bag grouting pipes are fixedly connected to the outer wall of the grouting pipe through the end pipe clamp.

[0008] Furthermore, the mold bag is made of a double-layer high-strength fiber fabric, the outer layer is made of tear-resistant nylon cloth, and the inner layer is made of permeable non-woven fabric.

[0009] Furthermore, the end pipe clamp is made of lead wire.

[0010] A construction method for high-pressure water gushing plugging mold bag grouting rapid pipe laying, using a high-pressure water gushing plugging mold bag grouting rapid pipe laying device, comprising the following steps:

[0011] S1: Drilling positioning, drilling according to the designed hole spacing;

[0012] S2: Install the mold bag, tie the mold bag to the grouting pipe and push it to the area where the water inlet is located;

[0013] S3: High-pressure grouting, injecting slurry into the mold bag at a set pressure, and the mold bag expands and contacts the hole wall;

[0014] S4: Close the slurry and stabilize the pressure. After the grouting pressure reaches the design value, close the valve and let it stand until the slurry finally solidifies.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Quick sealing: The mold bag forms a pressure-resistant sealing layer within 5-10 minutes after expansion to resist the impact of high-pressure water surge;

[0017] Efficient construction: The time for single-hole pipe laying is shortened to 30 minutes, which is three times more efficient than traditional processes;

[0018] Safe and reliable: The mold bag and slurry work together, the orifice pipe pull-out force is ≥50kN, eliminating the risk of nozzle spraying;

[0019] Environmental protection and energy saving: the slurry is non-toxic and the mold bag is degradable, meeting the requirements of green construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a mold bag grouting rapid pipe-inserting device for high-pressure water gushing plugging in the present invention.

[0021] Among them, 1- grouting pipe; 2- end pipe clamp; 3- mold bag; 4- mold bag grouting pipe; 5- flower hole. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0023] Example 1

[0024] Combination Figure 1 The present invention provides a mold bag grouting rapid pipe inserting device for high-pressure water gushing plugging, comprising a grouting pipe 1, the outer wall of the grouting pipe 1 is fixedly connected to a mold bag structure through an end pipe clamp 2, and the internal grouting of the mold bag structure is used to plug the water gushing outlet.

[0025] The mold bag structure includes a mold bag 3 and a plurality of mold bag grouting pipes 4, wherein the mold bag grouting pipes 4 are used for grouting or exhausting, and a plurality of flower holes 5 are arranged on the mold bag grouting pipes 4, and the arrangement of the plurality of flower holes 5 can facilitate uniform grouting into the mold bag, the mold bag grouting pipes 4 are arranged inside the mold bag 3, and one end of the mold bag grouting pipes 4 extends out of the mold bag 3, and the mold bag 3 and the mold bag grouting pipes 4 are fixedly connected to the outer wall of the grouting pipe 1 through the end pipe clamp 2.

[0026] The mold bag 3 is made of double-layer high-strength fiber fabric, the outer layer is made of tear-resistant nylon cloth, and the inner layer is made of permeable non-woven fabric.

[0027] The end pipe clamp 2 is made of lead wire, and the mold bag structure is fixed by binding with the lead wire.

[0028] In this embodiment, two mold bag grouting pipes 4 are provided, and the length of one mold bag grouting pipe 4 extending into the mold bag 3 is greater than the length of the other mold bag grouting pipe 4 extending into the mold bag 3. When grouting is injected into the mold bag 3, the mold bag grouting pipe 4 with a longer length extending into the mold bag 3 is used for grouting, and at this time, the mold bag grouting pipe 4 with a shorter length extending into the mold bag 3 can assist in exhaustion to ensure the uniformity of grouting.

[0029] The present invention realizes the rapid fixation and sealing of the orifice pipe under high-pressure water gushing conditions through the synergistic effect of the mold bag structure and the grouting process, solves the problems of easy failure and low efficiency of the traditional pipe-inserting process, and improves the safety and reliability of inclined well water plugging construction.

[0030] Example 2

[0031] A construction method for high-pressure water gushing plugging mold bag grouting rapid pipe laying, using a high-pressure water gushing plugging mold bag grouting rapid pipe laying device, comprising the following steps:

[0032] S1: Drilling positioning, drilling according to the designed hole spacing;

[0033] S2: Install the mold bag, tie the mold bag to the grouting pipe and push it to the area where the water inlet is located;

[0034] S3: High-pressure grouting, injecting slurry into the mold bag at a set pressure, and the mold bag expands and contacts the hole wall;

[0035] S4: Close the slurry and stabilize the pressure. After the grouting pressure reaches the design value, close the valve and let it stand until the slurry finally solidifies.

[0036] Before positioning the S1 borehole, construction preparation is required. The mold bag size and slurry ratio should be designed according to geological parameters (water pressure, hole diameter); the slurry, mold bag structure and drilling equipment should be prepared.

[0037] After the grouting is completed and the pressure is stabilized, the acceptance criteria include a sealing test process, that is, there is no water seepage at the orifice after the valve is closed and the pressure gauge is stable at above 1.0MPa.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A mold bag grouting rapid pipe-inserting device for high-pressure water gushing plugging, characterized in that: It comprises a grouting pipe, the outer wall of which is fixedly connected with a mold bag structure through an end pipe clamp, and the internal grouting of the mold bag structure is used to block the water gushing outlet.

2. The mold bag grouting rapid pipe-inserting device for high-pressure water inrush plugging as claimed in claim 1 is characterized in that: The mold bag structure includes a mold bag and a plurality of mold bag grouting pipes, wherein the mold bag grouting pipes are used for grouting or exhausting, and a plurality of flower holes are arranged on the mold bag grouting pipes, the mold bag grouting pipes are arranged inside the mold bag, and one end of the mold bag grouting pipes extends out of the mold bag, and the mold bag and the mold bag grouting pipes are fixedly connected to the outer wall of the grouting pipe through the end pipe clamp.

3. The mold bag grouting rapid pipe-inserting device for high-pressure water inrush plugging as claimed in claim 2 is characterized in that: The mold bag is made of double-layer high-strength fiber fabric, the outer layer is made of tear-resistant nylon cloth, and the inner layer is made of permeable non-woven fabric.

4. The mold bag grouting rapid pipe-inserting device for high-pressure water inrush plugging as claimed in claim 1 is characterized in that: The end pipe clamp is made of lead wire.

5. A construction method for high-pressure water gushing plugging by mold bag grouting and rapid pipe laying, using the mold bag grouting and rapid pipe laying device for high-pressure water gushing plugging according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Drilling positioning, drilling according to the designed hole spacing; S2: Install the mold bag, tie the mold bag to the grouting pipe and push it to the area where the water inlet is located; S3: High-pressure grouting, injecting slurry into the mold bag at a set pressure, and the mold bag expands and contacts the hole wall; S4: Close the slurry and stabilize the pressure. After the grouting pressure reaches the design value, close the valve and let it stand until the slurry finally solidifies.

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