A device for sealing water inrushes in water-rich sand layers that can replace the water-stopping membrane bag.

Abstract

This utility model discloses a sealing device for water seepage in a water-rich sand layer, capable of replacing the water-stopping membrane bag. It includes: a drainage pipe, a reverse filter membrane bag, a double-layer water-stopping membrane bag, a sleeve, an air inlet pipe, and a grouting pipe. The drainage pipe is a tube closed at the lower end and open at the upper end. The reverse filter membrane bag is permeable and is fitted onto the outer wall of the closed end of the drainage pipe, with the two sealed and fixedly connected. The reverse filter membrane bag communicates with the cavity of the drainage pipe, and its inner cavity is filled with filter material. The double-layer water-stopping membrane bag is fitted onto the sleeve and fixedly connected. The sleeve is fitted onto the drainage pipe, and the two are threaded together. The air inlet pipe communicates with the inner membrane chamber of the double-layer water-stopping membrane bag, and the grouting pipe communicates with the outer membrane chamber of the double-layer water-stopping membrane bag. This sealing device not only allows for the replacement of the water-stopping membrane bag when needed, better adapting to sealing seepage in different situations, but also helps reduce the amount of grouting material required for sealing.

Description

Technical Field

[0001] This utility model relates to the field of sand layer water inflow control technology, and in particular to a water-rich sand layer cavitation water inflow sealing device that can replace the water-stopping membrane bag. Background Technology

[0002] Water-rich sand layers, due to their low self-stabilization capacity and poor media cementation properties, are highly susceptible to water inrush and sand bursting disasters under engineering disturbances and groundwater action. How to quickly and effectively respond to water inrush and sand bursting disasters during underground engineering construction has long been a challenge for engineering technicians. Currently, the key to emergency treatment of water inrush and sand bursting disasters lies in rapid and effective backfilling of the outlet point to control the speed and scale of sand bursting. The commonly used method is to fill the burst hole with cotton yarn or other fiber materials, supplemented by sandbags for back pressure. However, this method has many problems. Therefore, patent application number 201710016322.9 proposes a device adapted for rapid drainage of water inrush and sand bursting in sand layers. This device can efficiently back pressure the outlet point while guiding the water flow and simultaneously filtering sand. However, a problem with this device is that the water-stopping membrane bag used to seal the burst hole cannot adapt to burst holes of different sizes under different conditions. For example, if the burst hole is large and exceeds the expansion limit of the water-stopping membrane bag, it is difficult to effectively seal the burst hole. Furthermore, in actual engineering projects, the size of a cavity will continue to increase over time after it has been sealed. The currently commonly used method of sealing cavities by one-time grouting is not suitable for situations where the cavity grows larger after sealing. Moreover, this sealing method requires on-site preparation of grouting materials and faces problems such as complex equipment preparation and difficult transportation, making it difficult to meet the "time-sensitive" engineering requirements of cavity sealing. Utility Model Content

[0003] This invention provides a water-sealing device for breaches in water-rich sand layers with replaceable waterstop bags. It not only allows for the replacement of the waterstop bags when needed, better adapting to the sealing of breaches under different conditions, but also helps reduce the amount of grout required for sealing. The technical solution of this invention is shown below.

[0004] A water-sealing device for breaching and sealing water in sandy layers, capable of replacing the water-stopping membrane bag, includes: a drainage pipe, a reverse filter membrane bag, a double-layer water-stopping membrane bag, a sleeve, an air inlet pipe, and a grouting pipe. The drainage pipe is a tube closed at the lower end and open at the upper end. The reverse filter membrane bag is permeable and is fitted onto the outer wall of the closed end of the drainage pipe, with the two sealed and fixedly connected. The reverse filter membrane bag communicates with the cavity of the drainage pipe, and its inner cavity is filled with filter media. The double-layer water-stopping membrane bag is fitted onto the sleeve and fixedly connected, with the double-layer water-stopping membrane bag positioned above the reverse filter membrane bag. The sleeve is fitted onto the drainage pipe, and the two are threaded together. The air inlet pipe communicates with the inner membrane chamber of the double-layer water-stopping membrane bag, and the grouting pipe communicates with the outer membrane chamber of the double-layer water-stopping membrane bag. Both the air inlet pipe and the grouting pipe are equipped with control valves.

[0005] Furthermore, the inner cavity of the reverse filter membrane bag and the cavity of the drainage tube are connected through a drainage hole opened on the drainage tube.

[0006] Furthermore, the reverse filter membrane bag is a double-layer membrane bag. Optionally, the reverse filter membrane bag is made of reverse filter geotextile.

[0007] Furthermore, the particle size of the filter media in the inner membrane bag of the reverse filtration membrane bag is smaller than the particle size of the filter media in the outer membrane bag. Optionally, the particle size of the filter media in the inner membrane bag of the reverse filtration membrane bag is 0.5~1.5mm, and the particle size of the filter media in the outer membrane bag is 1.5~3.5mm.

[0008] Furthermore, the filter material includes at least one of sand, gravel, ceramsite, coal gangue, etc.

[0009] Furthermore, the upper end of the drainage tube is a conical opening, and the side wall of the conical opening has a drainage hole.

[0010] Furthermore, a limit rod is fixed on the upper outer wall of the sleeve to increase the stability of the sealing device.

[0011] Compared with the prior art, the present invention has achieved at least the following beneficial effects:

[0012] (1) The water-rich sand layer cavitation sealing device of this utility model realizes the detachable connection between the double-layer water-stopping mold bag and the sleeve through the structure formed by the double-layer water-stopping mold bag and the sleeve. Thus, the double-layer water-stopping mold bag can be removed from the drainage pipe when needed and quickly replaced to adapt to the sealing of cavities under different conditions and improve the applicability of the sealing device.

[0013] (2) The device of this utility model for sealing water-bearing sand layer breaches uses a double-layer water-stopping mold bag. During use, air is first injected into the inner membrane chamber of the mold bag to expand it, thus providing initial and rapid sealing of the breach. Then, sealing slurry is injected into the outer membrane chamber of the double-layer water-stopping mold bag, which hardens to completely seal the breach. This method not only reduces the amount of sealing slurry used, but also allows for a faster hardening and sealing process. Furthermore, because the double-layer water-stopping mold bag expands using both air and slurry, air can be quickly pumped in at the initial stage of a disaster to expand and seal the breach. As the breach size increases, air can be replenished at any time to adapt to the increasing breach size, effectively preventing sudden changes in the scale of the disaster. Attached Figure Description

[0014] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0015] Figure 1 This is a front view of the water-filled sand layer breach sealing device in the following embodiments.

[0016] Figure 2 The following is a schematic diagram of the internal structure of the water-rich sand layer breach sealing device in the embodiments below.

[0017] The markings in the diagram represent: 1-drainage pipe, 2-reverse filter membrane bag, 3-double-layer water-stopping mold bag, 4-sleeve, 5-air inlet pipe, 6-grouting pipe, 7-filter material, 8-drainage hole, 9-drainage hole, 10-limiting rod, 11-sandbag. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] For ease of description, the words "up," "down," "left," and "right" appearing in this utility model only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings. They do not limit the structure and are merely for the purpose of facilitating the description of this utility model and simplifying the description. They do not indicate or imply that the device or component referred to needs to have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] refer to Figure 1 and Figure 2Example: A water-sealing device for breaches in water-rich sand layers, capable of replacing the water-stopping membrane bag, includes: a drainage pipe 1, a reverse filter membrane bag 2, a double-layer water-stopping membrane bag 3, a sleeve 4, an air inlet pipe 5, and a grouting pipe 6. Specifically:

[0021] The drainage tube 1 is a galvanized steel pipe that is closed at the bottom and open at the top, and it has good corrosion resistance. The reverse filter membrane bag 2 can be made of materials with a specification of 400~500g / cm³. 2 Made of reverse-filter geotextile, it has excellent water permeability and sand filtration capabilities. The reverse-filter membrane bag 2 is fitted onto the lower outer wall of the drainage pipe 1, and both ends of the reverse-filter membrane bag 2 are tied to the drainage pipe 1 to seal and fix the connection. The reverse-filter membrane bag 2 is filled with filter material 7 (selectable from sand, gravel, ceramsite, coal gangue, etc.), and its particle size can be arbitrarily selected between 0.5 and 3.5 mm, so as to intercept the sand in the water-sand mixture, prevent the water inrush from carrying the sand out of the breach and causing the breach to continue to expand, thus avoiding the engineering disaster caused by this. The inner cavity of the reverse-filter membrane bag 2 and the cavity of the drainage pipe 1 are connected through the drainage hole 8 opened on the drainage pipe 1, so that the water inrush filtered by the filter material 7 can be discharged through the drainage pipe 1, preventing the water inrush from spreading in the sand layer and causing secondary disasters.

[0022] The double-layer water-stopping membrane bag 3 is made of a waterproof and airtight material. It is fitted onto the sleeve 4, and both ends of the double-layer water-stopping membrane bag 3 are tied to the sleeve 4 to seal and fix the connection. The double-layer water-stopping membrane bag 3 is located above the reverse filter membrane bag 2. The sleeve 4 is fitted onto the drainage pipe 1, and the two are connected by the external thread on the outer wall of the drainage pipe 1 and the internal thread on the inner wall of the sleeve 4, so that the sleeve 4 and the double-layer water-stopping membrane bag 3 can be removed from the drainage pipe 1. One end of the air inlet pipe 5 is connected to the inner membrane chamber of the double-layer water-stopping membrane bag 3, and one end of the grouting pipe 6 is connected to the outer membrane chamber of the double-layer water-stopping membrane bag 3. Both the air inlet pipe 5 and the grouting pipe 6 are equipped with valves for controlling their on / off state.

[0023] refer to Figure 2In this embodiment, the water-filling sealing device is first extended into the cavity to block the water inflow point, with the upper end of the drainage pipe 1 located outside the cavity. Then, the air inlet pipe 5 is connected to an air pump to fill the inner membrane chamber of the double-layer water-stopping bag 3 with air, causing the double-layer water-stopping bag 3 to expand and press against the side wall of the cavity for rapid initial sealing. Next, sealing grout (such as cement-water glass double-liquid grout) is injected into the outer membrane chamber of the double-layer water-stopping bag 3 through the grouting pipe 6. After hardening, it completely seals the cavity. During this process, since sealing the cavity does not require completely filling the double-layer water-stopping bag 3 with sealing grout, but only injecting sealing grout into the outer membrane chamber, the amount of sealing grout used can be effectively reduced. Furthermore, because less sealing grout is used, the hardening and sealing process can be completed more quickly. Simultaneously, after the sealing slurry is injected, the expansion of the outer membrane bag chamber compresses the air-filled inner membrane bag chamber, thereby improving the sealing of the rupture under the counter-compression force. Furthermore, the structure formed by the double-layer water-stopping mold bag 3 and the sleeve 4 allows the double-layer water-stopping mold bag 3 to be removed from the drainage pipe 1 when needed. Then, another sleeve 4 and other sizes of water-stopping mold bags 3 connected to it can be installed on the drainage pipe 1, enabling rapid replacement of other sizes of water-stopping mold bags 3 to adapt to the sealing of ruptures under different conditions and improve the applicability of the sealing device.

[0024] In another implementation, refer to Figure 2 In the above embodiment, the filter membrane bag 2 of the sealing device has a double-layer structure formed by an inner membrane bag and an outer membrane bag, and the particle size of the filter material 7 in the inner membrane bag is smaller than that in the outer membrane bag. For example, the particle size of the filter material 7 in the inner membrane bag is 0.5~1.5mm, and the particle size of the filter material 7 in the outer membrane bag is 1.5~3.5mm. This structure can maintain good water permeability while retaining sand in the flowing water.

[0025] In another implementation, refer to Figure 1 and Figure 2 In the above embodiment, the upper end of the drainage pipe 1 of the sealing device is a tapered opening, and the side wall of the tapered opening has a drainage hole 9. Therefore, when it is necessary to connect the upper end of the drainage pipe 1 to the drainage pipe for drainage, the tapered opening facilitates quick connection between the two. Simultaneously, when it is not necessary to connect the drainage pipe, the drainage hole 9 on the tapered opening can also serve a drainage function, avoiding the problem of reduced drainage efficiency due to the reduced diameter of the upper end of the drainage pipe 1.

[0026] In another implementation, refer to Figure 1In the above embodiment, a limiting rod 10 is fixed on the upper outer wall of the sleeve 4 of the sealing device. This limiting rod 10 not only serves as a handle to facilitate the disassembly and connection between the sleeve 4 and the drainage tube 1, but also provides support on the surface of the sand layer during use (see reference). Figure 2 This improves the stability of the sealing device, preventing it from tilting and affecting construction efficiency. Furthermore, after sealing is complete and sandbags 11 are placed on the breach, the sealing device can maintain good stability and firmness using the limiting rod 10 pressed under the sandbags 11.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for sealing water inrushes in water-rich sand layers that can replace the water-stopping membrane bag, characterized in that, include: A drainage tube, wherein the drainage tube is a tube that is closed at the lower end and open at the upper end; A reverse filter membrane bag, which has a water-permeable function, is fitted on the outer wall of the closed end of the drainage tube and the two are sealed and fixedly connected. The reverse filter membrane bag and the lumen of the drainage tube are connected, and the inner cavity of the reverse filter membrane bag is filled with filter material. A sleeve, which is fitted onto the drainage tube and the two are threaded together; A double-layer water-stopping membrane bag is fitted onto the sleeve and the two are fixedly connected, with the double-layer water-stopping membrane bag located above the reverse filter membrane bag; An air inlet pipe is connected to the inner membrane bag chamber of the double-layer water-stopping mold bag; The grouting pipe is connected to the outer membrane chamber of the double-layer water-stopping bag, and both the air inlet pipe and the grouting pipe are equipped with control valves.

2. The replaceable water stop membrane bag of the water-rich sand layer breach and gushing water plugging device according to claim 1, characterized in that, The inner cavity of the reverse filter membrane bag and the cavity of the drainage tube are connected through a drainage hole opened on the drainage tube.

3. The replaceable water stop membrane bag of the water-rich sand layer breach and water inflow sealing device according to claim 1, characterized in that, The reverse filtration membrane bag is a double-layer membrane bag.

4. The replaceable water stop membrane bag of the water-rich sand layer breach and water inflow plugging device according to claim 1, characterized in that, The reverse filter membrane bag is made of reverse filter geotextile.

5. The replaceable water stop membrane bag of the water-rich sand layer breach and gushing water plugging device according to claim 3, characterized in that, The particle size of the filter media in the inner membrane bag of the reverse filtration membrane bag is smaller than that in the outer membrane bag.

6. The replaceable water stop membrane bag of water-rich sand layer breach and gushing water plugging device according to claim 5, characterized in that, The inner membrane bag of the reverse filtration membrane bag has a filter media particle size of 0.5~1.5mm, and the outer membrane bag has a filter media particle size of 1.5~3.5mm.

7. The replaceable water stop membrane bag of water-rich sand layer breach and gushing water plugging device according to claim 1, characterized in that, The filter media includes at least one of sand, gravel, ceramsite, and coal gangue.

8. The replaceable water stop membrane bag of the water-rich sand layer breach and gushing water plugging device according to any one of claims 1-7, characterized in that, The upper end of the drainage tube is a conical opening, and the side wall of the conical opening has a drainage hole.

9. The replaceable water stop membrane bag of the water-rich sand layer breach and gushing water plugging device according to any one of claims 1-7, characterized in that, A limit rod is fixed on the upper outer wall of the sleeve.

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