Emergency plugging device for sudden water gushing of foundation pit and using method of emergency plugging device

Abstract

The invention discloses a foundation pit water inrush emergency plugging device and a using method thereof, and belongs to the technical field of foundation pit water inrush emergency plugging. The foundation pit water inrush emergency plugging device comprises a hollow supporting pipe and a shell, the shell is movably installed on the outer surface of the supporting pipe in the length direction, a pull rope is arranged on the outer surface of the shell, and a top pipe cap is detachably installed at one end of the shell; the top pipe cap and one end of the supporting pipe are coaxially arranged, a bottom pipe cap is arranged at the end, away from the top pipe cap, of the shell, a plurality of storage bins are distributed between the bottom pipe cap and the top pipe cap in the circumferential direction of the center axis of the supporting pipe, movable water absorption bags are placed in the storage bins, and water absorption resin is placed in each water absorption bag. The two-section type plugging device has the beneficial effects that two-section type plugging of the water gushing of the foundation pit is achieved through the water absorption bag and the hollow supporting pipe, and rapid and reliable plugging can be achieved in the emergency situation of the water gushing of the foundation pit.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency plugging of sudden water gushing from a foundation pit, and in particular to an emergency plugging device for sudden water gushing from a foundation pit and a method of using the device. Background Art

[0002] Pit water inrush refers to the situation in which a large amount of groundwater suddenly flows into the pit from the bottom or side walls due to excessive groundwater pressure or failure of local water-blocking curtains during the excavation of the pit, causing many hazards to the pit project. If not sealed in time, the sudden water inrush will cause foundation strength damage, slope sliding, pit wall instability and even landslides. In severe cases, it will cause production safety accidents and cause casualties to construction workers. Pit water inrush not only seriously threatens the safety of construction workers and the pit itself, but also causes dangerous situations such as foundation settlement and building tilt of buildings around the pit, causing adverse social impacts.

[0003] When a sudden water gushing occurs in a foundation pit, the earlier the treatment is carried out, the higher the success rate of plugging will be, and the more the economic and social benefits of the foundation pit project can be guaranteed. At present, the main technology for plugging sudden water gushing in foundation pits is cement-water glass double liquid grouting technology. However, when a sudden water gushing occurs, the grouting equipment is often not in place in time and the grouting materials cannot be prepared quickly, and the best plugging period when the sudden water gushing just begins is missed. The gushing water is accompanied by the gushing sand, which makes the gushing channel continue to expand, and finally makes the sudden water gushing treatment condition complicated and dangerous. Therefore, there is an urgent need for a sudden water gushing plugging equipment that can be kept in a standing state in the foundation pit project, available at any time, and easy to operate, so as to achieve efficient and reliable plugging of the sudden water gushing in the foundation pit as soon as possible when a sudden water gushing occurs. Summary of the invention

[0004] In order to overcome the problem of lack of emergency rapid sealing measures for sudden water gushing in foundation pits in the prior art, the present invention provides an emergency sealing device for sudden water gushing in foundation pits, including a hollow support tube and an outer shell, the outer surface of the support tube is movably mounted with the outer shell along the length direction, the outer surface of the outer shell is provided with a pull rope, a top pipe cap is detachably mounted on one end of the outer shell, the top pipe cap is coaxially arranged with one end of the support tube, a bottom pipe cap is arranged at the end of the outer shell away from the top pipe cap, a plurality of storage bins are circumferentially distributed along the central axis of the support tube between the bottom pipe cap and the top pipe cap, movable water-absorbing bags are placed in the plurality of storage bins, and water-absorbing resin is placed in each water-absorbing bag belt.

[0005] The two-stage blocking of sudden water gushing from the foundation pit is achieved through the water-absorbing bag and the hollow support pipe. The water-absorbing bag can achieve rapid initial blocking for emergency situations of sudden water gushing from the foundation pit, which can control the sudden water gushing from the foundation pit while greatly reducing the difficulty of subsequent blocking construction. After the initial blocking is completed, complete blocking can be easily achieved by injecting grouting materials through the hollow support pipe. The cooperation of the water-absorbing bag and the support pipe can achieve rapid and reliable blocking for emergency situations of sudden water gushing from the foundation pit.

[0006] Preferably, the storage bin is fixed on a side of the bottom tube cap close to the top tube cap, one end of the water-absorbing bag close to the top tube cap passes through the storage bin and is fixed on the inner wall of the top tube cap, and the pull rope drives the outer shell, the bottom tube cap and the storage bin to separate so that the water-absorbing bag contacts the sudden water. At the same time, the water-absorbing bag and the top tube cap are connected to fix the water-absorbing bag at the water outlet so that the water-absorbing bag can absorb water and expand to play a blocking role.

[0007] Preferably, the water-absorbing bag is a nylon bag of 100-200 meshes, and each bag contains 20-100g of water-absorbing resin. The water-absorbing bag of this specification can withstand the impact of sudden water flow, and cooperate with the water-absorbing resin to play the role of water absorption and blocking.

[0008] Preferably, the surfaces of the outer shell, the top tube cap and the bottom tube cap are provided with sealing bags, and the interior of the sealing bags is in a vacuum state, so as to ensure that the water-absorbing resin is in a dry state when not in use.

[0009] Preferably, a check valve is provided on the inner wall of one end of the support tube close to the top tube cap.

[0010] Preferably, the check valve includes two semicircular baffles, a limit rod and a rotating shaft. A rotating shaft perpendicular to the central axis of the support tube is arranged on the inner wall of the support tube close to the top tube cap. One side of the straight edge of the baffle is hinged on the rotating shaft, and the outer diameter of the baffle is equal to the inner diameter of the support tube. The limit rod is arranged to intersect with the rotating shaft on the inner wall of the support tube on the side of the rotating shaft away from the top tube cap.

[0011] By arranging a check valve on the inner wall of one end of the hollow support pipe near the top pipe cap, it can be prevented that after the initial blocking is achieved, the grouting material is difficult to be injected into the water outlet due to excessive pressure at the water outlet or the sudden water flows back through the support pipe.

[0012] Preferably, a fixing assembly is provided at one end of the support tube away from the top tube cap, and the fixing assembly includes a base, a sleeve and a support column. The upper surface of the base is provided with a sleeve, and the end of the support tube away from the top tube cap is fixed on the inner wall of the sleeve, and the lower surface of the base is provided with a support column.

[0013] Preferably, the number of support columns is 3.

[0014] Preferably, an opening is provided on one side of the sleeve, and two fastening plates are oppositely provided on the outer surface of the sleeve at the opening, and a fastening screw is provided between the two fastening plates.

[0015] The fixing assembly plays the role of transmitting water pressure load. The lower part adopts three support rods, which can be inserted into the ground to provide stable support for the sealing material to resist the water pressure. In addition, the cooperation of the fastening plate and the fastening screws can adapt to support pipes of different sizes.

[0016] Preferably, both ends of the support tube are provided with detachable plugs to prevent foreign matter from entering the hollow support tube when not in use and affecting the use effect of the support tube.

[0017] In addition, the present invention also provides a method for using a foundation pit sudden water gushing emergency plugging device, comprising the following steps:

[0018] Step 1: fix the support column on the bottom surface near the water inflow port, then pass the end of the support pipe away from the top pipe cap through the sleeve, and open the sealing bag and the plug on the side close to the top pipe cap of the Haloxylon ammodendron tree;

[0019] Step 2: insert the end of the support pipe with the top pipe cap into the water inlet and adjust the position of the support pipe, then tighten the fastening screw to fix the support pipe in the sleeve;

[0020] Step 3: Pull the pull rope to move the outer shell, the top pipe cap and the storage bin toward the sleeve, so that the water-absorbing bag is released, absorbs water and expands, completing the initial plugging;

[0021] Step 4: Then open the plug close to the side of the sleeve, and inject the grouting material into the deep of the water outlet through the hollow support tube, and wait for the grouting material to harden and completely seal it.

[0022] Preferably, the water absorption and swelling time of the water-absorbing resin is 1-2 minutes.

[0023] Preferably, the hardening time of the grouting material is 5-8 minutes.

[0024] Preferably, the grouting material is a cement-water glass double liquid grouting material with a ratio of 1:1.

[0025] Beneficial effects:

[0026] The beneficial effects produced by the technical solution of the present invention are as follows:

[0027] (1) The present invention realizes two-stage plugging of sudden water gushing from a foundation pit through a water-absorbing bag and a hollow support tube. The water-absorbing bag can realize rapid initial plugging in response to an emergency situation of sudden water gushing from a foundation pit, thereby controlling the sudden water gushing from the foundation pit and greatly reducing the difficulty of subsequent plugging. After the initial plugging is completed, complete plugging can be easily achieved by injecting grouting material through the hollow support tube. The cooperation of the water-absorbing bag and the support tube can realize rapid and reliable plugging in response to an emergency situation of sudden water gushing from a foundation pit.

[0028] (2) By providing a check valve on the inner wall of one end of the hollow support pipe near the top pipe cap, it is possible to prevent the situation in which the grouting material is difficult to be injected into the water outlet due to excessive pressure at the water outlet after the initial plugging is achieved, or the sudden water flows back through the support pipe.

[0029] (3) The fixing assembly plays the role of transmitting water pressure load. The lower part adopts three support rods, which can be inserted into the ground to provide stable support for the plugging material to resist the water pressure. In addition, the combination of fastening plates and fastening screws can adapt to support pipes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure of the foundation pit sudden water emergency plugging device of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the fixed components of the foundation pit sudden water inrush emergency plugging device of the present invention;

[0033] Figure 3 This is a schematic diagram of the check valve structure of the foundation pit sudden water emergency plugging device of the present invention.

[0034] Figure 4 It is a schematic diagram of the initial blocking when the foundation pit sudden water inrush emergency blocking device of the present invention is used;

[0035] Figure 5 It is a schematic diagram of complete blocking when the foundation pit sudden water gushing emergency blocking device of the present invention is used.

[0036] In the figure: 1. support pipe; 2. shell; 3. pull rope; 4. top pipe cap; 5. bottom pipe cap; 6. storage bin; 7. water-absorbing bag; 8. water-absorbing resin; 9. sealing bag; 10. check valve; 11. baffle; 12. limit rod; 13. rotating shaft; 14. fixing assembly; 15. sleeve; 16. pedestal; 17. support column; 18. fastening plate; 19. fastening screw; 20. plug; 21. foundation pit; 22. water outlet; 23. water channel; 24. pressurized water; 25. ground building; 26. grouting machine; 27. grouting material. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. 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.

[0038] This embodiment can achieve rapid and reliable blocking of sudden water gushing from the foundation pit through the cooperation of the water-absorbing bag and the support pipe. It solves the problem of rapid blocking of sudden water gushing from the foundation pit in a short time. The specific implementation is as follows:

[0039] like Figures 1 to 5 As shown, an emergency plugging device for sudden water inrush in a foundation pit comprises a hollow support pipe 1 and an outer shell 2. The outer surface of the support pipe 1 is movably mounted with the outer shell 2 along the length direction. The outer surface of the outer shell 2 is provided with a pull rope 3. A top pipe cap 4 is detachably mounted on one end of the outer shell 2. The top pipe cap 4 is coaxially arranged with one end of the support pipe 1. A bottom pipe cap 5 is arranged at the end of the outer shell 2 away from the top pipe cap 4. A plurality of storage bins 6 are circumferentially distributed along the central axis of the support pipe 1 between the bottom pipe cap 5 and the top pipe cap 4. Movable water-absorbing bags 7 are placed in the plurality of storage bins 6. Water-absorbing resin 8 is placed in each water-absorbing bag belt.

[0040] The two-stage blocking of sudden water gushing from the foundation pit is achieved by the water-absorbing bag 7 and the hollow supporting tube 1. The water-absorbing bag 7 can achieve rapid initial blocking for emergency situations of sudden water gushing from the foundation pit, thereby controlling the sudden water gushing from the foundation pit and greatly reducing the difficulty of subsequent blocking construction. After the initial blocking is completed, complete blocking can be easily achieved by injecting grouting material through the hollow supporting tube 1. The cooperation of the water-absorbing bag 7 and the supporting tube 1 can achieve rapid and reliable blocking for emergency situations of sudden water gushing from the foundation pit.

[0041] Specifically, the storage bin 6 is fixed on one side of the bottom tube cap 5 close to the top tube cap 4, and one end of the water-absorbing bag 7 close to the top tube cap 4 passes through the storage bin 6 and is fixed on the inner wall of the top tube cap 4. The pull rope 3 drives the outer shell 2, the bottom tube cap 5 and the storage bin 6 to separate so that the water-absorbing bag 7 contacts the sudden water. At the same time, the water-absorbing bag 7 and the top tube cap 4 are connected to fix the water-absorbing bag 7 at the water outlet so that the water-absorbing bag 7 can absorb water and expand to play a blocking role.

[0042] Specifically, the water-absorbing bag 7 is a nylon bag of 100-200 meshes, and 20-100g of water-absorbing resin 8 is placed in each bag. The water-absorbing bag 7 of this specification can withstand the impact of sudden water flow, and at the same time cooperate with the water-absorbing resin 8 to play the role of water absorption and blocking.

[0043] Specifically, the surfaces of the housing 2, the top tube cap 4 and the bottom tube cap 5 are provided with a sealing bag 9, and the interior of the sealing bag 9 is in a vacuum state, ensuring that the water-absorbing resin 8 is in a dry state when not in use.

[0044] Specifically, a check valve 10 is provided on the inner wall of one end of the support tube 1 close to the top tube cap 4 .

[0045] Specifically, the check valve 10 includes two semicircular baffles 11, a limiting rod 12 and a rotating shaft 13. A rotating shaft 13 perpendicular to the central axis of the support tube 1 is arranged on the inner wall of the support tube 1 close to the top pipe cap 4. One side of the straight side of the baffle 11 is hinged on the rotating shaft 13, and the outer diameter of the baffle 11 is equal to the inner diameter of the support tube 1. The limiting rod 12 and the rotating shaft 13 are arranged to intersect on the inner wall of the support tube 1 on the side of the rotating shaft 13 away from the top pipe cap 4.

[0046] By arranging a check valve 10 on the inner wall of one end of the hollow support pipe 1 close to the top pipe cap 4, it is possible to prevent the situation in which the grouting material is difficult to be injected into the water outlet or the sudden water flows back through the support pipe 1 due to excessive pressure at the water outlet after the initial blocking is achieved.

[0047] Specifically, a fixing assembly 14 is provided at one end of the support tube 1 away from the top tube cap 4, and the fixing assembly 14 includes a base 16, a sleeve 15 and a support column 17. The sleeve 15 is provided on the upper surface of the base 16, and the end of the support tube 1 away from the top tube cap 4 is fixed on the inner wall of the sleeve 15, and the support column 17 is provided on the lower surface of the base 16.

[0048] Specifically, the number of the supporting columns 17 is three.

[0049] Specifically, an opening is provided at one side of the sleeve 15 , and two fastening plates 18 are oppositely provided on the outer surface of the sleeve 15 at the opening, and a fastening screw 19 is provided between the two fastening plates 18 .

[0050] The fixing assembly 14 serves to transfer the water pressure load. The lower part adopts three support rods which can be inserted into the ground to provide stable support for the plugging material to resist the water pressure. In addition, the cooperation between the fastening plate 18 and the fastening screw 19 can adapt to support pipes 1 of different sizes.

[0051] Specifically, both ends of the support tube 1 are provided with detachable plugs 20 to prevent foreign objects from entering the hollow support tube 1 when not in use and affecting the use effect of the support tube 1 .

[0052] A method for using a foundation pit sudden water gushing emergency plugging device comprises the following steps:

[0053] Step 1: fix the support column 17 to the bottom surface near the water inflow port, then pass the end of the support pipe 1 away from the top pipe cap 4 through the sleeve 15, and open the sealing bag 9 and the plug 20 on one side close to the top pipe cap 4 of the Haloxylon ammodendron tree;

[0054] Step 2: insert one end of the support pipe 1 provided with the top pipe cap 4 into the water inlet and adjust the position of the support pipe 1, then tighten the fastening screw 19 to fix the support pipe 1 in the sleeve 15;

[0055] Step 3: Pull the pull rope 3 to move the outer shell 2, the top pipe cap 4 and the storage bin 6 toward the sleeve 15, so that the water-absorbing bag 7 is released, absorbs water and expands, completing the initial plugging;

[0056] Step 4: Then open the plug 20 near the side of the sleeve 15, and inject the grouting material into the deep of the water outlet through the hollow support pipe 1 by the grouting machine, and wait for the grouting material to harden and completely seal.

[0057] Specifically, the water absorbing and swelling time of the water absorbing resin 8 is 1-2 minutes.

[0058] Specifically, the hardening time of the grouting material is 5-8 minutes.

[0059] Specifically, the grouting material is a cement-water glass double liquid grouting material with a ratio of 1:1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An emergency plugging device for sudden water inrush in a foundation pit, characterized in that: It includes a hollow support tube and an outer shell, the outer surface of the support tube is movably mounted with the outer shell along the length direction, the outer surface of the outer shell is provided with a draw rope, a top tube cap is detachably mounted on one end of the outer shell, the top tube cap is coaxially arranged with one end of the support tube, a bottom tube cap is arranged at the end of the outer shell away from the top tube cap, a plurality of storage bins are circumferentially distributed along the central axis of the support tube between the bottom tube cap and the top tube cap, movable water-absorbing bags are placed in the plurality of storage bins, and water-absorbing resin is placed in each of the water-absorbing bag belts.

2. The emergency plugging device for sudden water inrush in a foundation pit according to claim 1, characterized in that: The storage bin is fixed on a side of the bottom tube cap close to the top tube cap, and one end of the water-absorbing bag close to the top tube cap passes through the storage bin and is fixed on the inner wall of the top tube cap.

3. The foundation pit water inrush emergency plugging device according to claim 1, characterized in that: The water-absorbing bags are nylon bags with mesh sizes of 100-200, and each bag contains 20-100g of water-absorbing resin.

4. The foundation pit water inrush emergency plugging device according to claim 1, characterized in that: Sealing bags are arranged on the surfaces of the shell, the top tube cap and the bottom tube cap, and the interior of the sealing bags is in a vacuum state.

5. The foundation pit sudden water inrush emergency plugging device according to claim 1, characterized in that: A check valve is arranged on the inner wall of one end of the support tube close to the top tube cap.

6. The foundation pit sudden water inrush emergency plugging device according to claim 4, characterized in that: The check valve includes two semicircular baffles, a limiting rod and a rotating shaft. A rotating shaft perpendicular to the central axis of the support tube is arranged on the inner wall of the support tube close to the top tube cap. One side of the straight edge of the baffle is hinged on the rotating shaft, and the outer diameter of the baffle is equal to the inner diameter of the support tube. The limiting rod is arranged to intersect with the rotating shaft on the inner wall of the support tube on the side of the rotating shaft away from the top tube cap.

7. The foundation pit sudden water inrush emergency plugging device according to claim 1, characterized in that: A fixing assembly is provided at one end of the support tube away from the top tube cap, and the fixing assembly includes a base, a sleeve and a support column. The sleeve is provided on the upper surface of the base, and one end of the support tube away from the top tube cap is fixed to the inner wall of the sleeve, and the support column is provided on the lower surface of the base.

8. The foundation pit sudden water inrush emergency plugging device according to claim 7, characterized in that: An opening is arranged on one side of the sleeve, and two fastening plates are arranged opposite to each other on the outer surface of the sleeve at the opening, and a fastening screw is arranged between the two fastening plates.

9. The foundation pit sudden water inrush emergency plugging device according to claim 1, characterized in that: Both ends of the support tube are provided with detachable plugs.

10. A method for using a foundation pit water inrush emergency plugging device, using a foundation pit water inrush emergency plugging device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: fix the support column on the bottom surface near the water inflow port, then pass the end of the support pipe away from the top pipe cap through the sleeve, and open the sealing bag and the plug on one side close to the top pipe cap of the Haloxylon ammodendron tree; Step 2: insert the end of the support pipe with the top pipe cap into the water inlet and adjust the position of the support pipe, then tighten the fastening screw to fix the support pipe in the sleeve; Step 3: Pull the pull rope to move the outer shell, the top pipe cap and the storage bin toward the sleeve, so that the water-absorbing bag is released, absorbs water and expands, completing the initial plugging; Step 4: Then open the plug close to the side of the sleeve, and inject the grouting material into the deep of the water outlet through the hollow support tube, and wait for the grouting material to harden and completely seal it.

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