A water drainage and plugging structure and method for high-temperature bedrock cracks in foundation pits

Abstract

The present invention discloses a water drainage and plugging structure for high-temperature bedrock cracks in a foundation pit, which relates to the field of construction engineering, including a spring and a sump, the spring and the sump are connected by a drainage ditch, and two sump wells are arranged side by side at the bottom of the sump. The present invention also discloses a water drainage and plugging method for high-temperature bedrock cracks in a foundation pit, including the following parts: A, spring part; B, drainage ditch part; C, sump well part and D, plugging of water outlet; by adopting the combination of graded crushed stone, reinforced concrete, non-woven fabric, finished iron bucket and waterproof airbag to form a plugging structure, the water outlet can be quickly and perfectly plugged. The present invention blocks the spring, drainage ditch and sump by combining graded crushed stone, non-woven fabric and reinforced concrete, then forms a sump well by combining the finished iron bucket with concrete, and plugs the sump well by rubber water-stop airbag, reinforced concrete and steel plate layer, thereby improving the plugging efficiency of the present invention.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, and in particular to a water drainage and plugging structure and method for high-temperature bedrock cracks in a foundation pit. Background Art

[0002] The usual method of basement floor construction is to lay a 10 cm concrete cushion, lay waterproofing membrane, tie the floor steel bars, and pour concrete. This will easily cause groundwater leakage in the floor surface. Due to the excessive groundwater pressure, leakage will occur even with a waterproof layer.

[0003] The existing technology conventionally adopts grouting and foaming methods, which are laborious, time-consuming, and costly, and affect the subsequent floor paint construction and delivery of the built basement. Therefore, it is necessary to invent a foundation pit high-temperature bedrock crack water drainage and sealing structure and method to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a foundation pit high-temperature bedrock crack water drainage and plugging structure and method to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a foundation pit high-temperature bedrock crack water drainage and plugging structure, comprising a spring and a sump, the spring and the sump are connected by a drainage ditch, two sump wells distributed side by side are arranged at the bottom of the sump, a pit groove is opened at the opening of the spring, the inside of the pit groove, the sump and the sump are all paved with graded crushed stone, the upper surface of the graded crushed stone is bonded and connected with a non-woven fabric layer, the upper surface of the non-woven fabric layer is cast with a cushion layer, a steel mesh is arranged in the cushion layer, and C20 concrete is cast on the outside of the sump protruding from the cushion layer.

[0006] Preferably, a rubber water-stopping airbag is arranged on the inner side of the upper end of one of the water-collecting wells, and C 30 early-strength concrete is poured at the wellhead of one of the water-collecting wells, and reinforcing ribs are embedded inside the C 30 early-strength concrete.

[0007] Preferably, a steel plate layer is provided at the lower end of the other water collection well, a pressure relief pipe is connected through the middle of the steel plate layer, the pressure relief pipe is sealed to the steel plate layer through a sealing flange, and a valve is connected to the bottom end of the pressure relief pipe.

[0008] Preferably, the first section of the water collection well is formed by welding two finished iron barrels connected together, and a carbon pipe is used to connect the two finished iron barrels at a height of 40 cm.

[0009] Preferably, the outer side of the lower end of the finished iron barrel is provided with a plurality of groups of vertically distributed through holes with equal intervals, and each group is provided with a plurality of through holes distributed in a ring array.

[0010] A method for draining and plugging high-temperature bedrock cracks in a foundation pit, comprising the following parts:

[0011] A. Spring location:

[0012] A-1: Dig a pit with a depth of not less than 1500mm and a diameter of 2000mm at the spring;

[0013] A-2: Fill the pit with graded crushed stone, then lay a non-woven fabric layer on the graded crushed stone, and then pour the cushion layer on the upper surface of the non-woven fabric layer;

[0014] B. Drainage ditch location: dig a 500mmX1000mm drainage ditch between the spring and the water collection well;

[0015] C. Location of water collection well:

[0016] C-1: Dig a sump at the sump, and then set up a sump at the bottom of the sump;

[0017] C-2: Two finished iron barrels with a diameter of 60 cm and a height of 90 cm are welded to form the first section of the water collection well. Holes are evenly opened below 30 cm on the outer wall of the finished iron barrels. At the same time, a 20 mm thick carbon pipe is used to connect the two finished iron barrels at a height of 40 cm.

[0018] C-3: The first section of the water collection well is filled with graded crushed stone within 500mm around it. The part of the water collection well extending out of the cushion layer is poured with C20 concrete together with the surrounding of the water collection pit to the top of the chopstick board. It is sealed 48 hours after the C20 concrete pouring is completed;

[0019] D. Blocking of water outlet:

[0020] D-1: Before plugging, lower the water level of the water collection well to 200mm below the cushion layer to ensure that there is no water during plugging;

[0021] D-2: Use a rubber water-stopping airbag to first block one of the water collection wells. The rubber water-stopping airbag is 200mm lower than the wellhead of the water collection well.

[0022] D-3: After the rubber water-stop airbag is inflated, C 30 early-strength concrete is poured on the upper side of the rubber water-stop airbag, and reinforcing ribs are set inside the C 30 early-strength concrete;

[0023] D-4: When another water collection well is blocked, a 5mm thick steel plate layer is set on the top of the finished iron barrel. The middle of the steel plate layer is connected to a pressure relief pipe through a flange. The pressure relief pipe is connected to the bottom of the inner cavity of the water collection well at the edge of the pit with a φ100 galvanized steel pipe, and a valve is added at the bottom of the pressure relief pipe. The valve will be closed 48 hours after the C20 concrete pouring is completed.

[0024] Preferably, when the cushion layer is poured at the spring eye site, a steel mesh is arranged in the cushion layer, and the steel mesh is a 12@200 bidirectional single-layer steel mesh.

[0025] Preferably, the water collection well is 500 mm lower than the water filtration layer.

[0026] Preferably, the size of the rubber water-stop airbag is φ600mm×650mmX20mm, and when the C30 early-strength concrete is poured, reinforcing ribs are arranged inside, and the reinforcing ribs are 12@200 single-layer bidirectionally arranged.

[0027] Technical effects and advantages of the present invention:

[0028] 1. The present invention blocks springs, drainage ditches and water collection pits by combining crushed stone, non-woven fabrics and reinforced concrete, and then forms a water collection well by combining finished iron barrels with concrete, and blocks the water collection well by using rubber water-stop airbags, reinforced concrete and steel plate layers, thereby improving the blocking efficiency of the present invention and reducing the construction cost;

[0029] 2. The present invention forms a plugging structure by combining graded crushed stone, reinforced concrete, non-woven fabrics, finished iron barrels and waterproof airbags, which can quickly and perfectly plug the water outlet. The materials used in the present invention are low-cost and easy to obtain. Some materials can be made on-site, which is economical and will not cause pollution or impact on the on-site environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a top view schematic diagram of the overall structure of the present invention.

[0031] Figure 2 It is a cross-sectional schematic diagram of the pit structure of the present invention.

[0032] Figure 3 It is a cross-sectional schematic diagram of the overall structure of the present invention.

[0033] Figure 4 It is a partial cross-sectional schematic diagram of the water collection well structure of the present invention.

[0034] In the figure: 1. Spring; 2. Drainage ditch; 3. Collection pit; 4. Collection well; 5. Pit; 6. Graded crushed stone; 7. Non-woven fabric layer; 8. Cushion layer; 9. Steel mesh; 10. C 20 concrete; 11. Rubber water-stop airbag; 12. C 30 early-strength concrete; 13. Reinforcement ribs; 14. Steel plate layer; 15. Pressure relief pipe; 16. Valve; 17. Finished iron drum; 18. Carbon tube; 19. Through hole. DETAILED DESCRIPTION

[0035] 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.

[0036] The present invention provides Figure 1-4 A foundation pit high-temperature bedrock crack drainage and plugging structure shown in the figure includes a spring 1 and a sump 3, the spring 1 and the sump 3 are connected by a drainage ditch 2, two sump wells 4 distributed side by side are arranged at the bottom of the sump 3, a pit 5 is opened at the opening of the spring 1, and the inside of the pit 5, the sump 3 and the sump 4 are all paved with graded crushed stone 6, and the upper surface of the graded crushed stone 6 is bonded and connected with a non-woven fabric layer 7, and the non-woven fabric layer 7 is arranged to prevent cement slurry from flowing into the pit when the cushion layer 8 is poured. The upper surface of the non-woven fabric layer 7 is poured with a cushion layer 8, and a steel mesh 9 is arranged in the cushion layer 8. The steel mesh 9 is a 12@200 bidirectional single-layer steel mesh, and the outer side of the sump 4 protruding from the cushion layer 8 is poured with C20 concrete 10.

[0037] Specifically, a rubber water-stopping airbag 11 is arranged on the inner side of the upper end of one of the water-collecting wells 4, which plays a plugging role, and C 30 early-strength concrete 12 is poured at the wellhead of one of the water-collecting wells 4, which plays a further plugging role. Reinforcement ribs 13 are embedded in the interior of the C 30 early-strength concrete 12, and the reinforcement ribs 13 are 12@200 single-layer bidirectional arrangements, which improve the strength of the C 30 early-strength concrete 12. A steel plate layer 14 is arranged at the lower end of the other water-collecting well 4, which plays a plugging role. A pressure relief pipe 15 is connected through the middle of the steel plate layer 14, and the pressure relief pipe 15 is sealed and connected to the steel plate layer 14 through a sealing flange. A valve 16 is connected to the bottom end of the pressure relief pipe 15, and the pressure relief pipe 15 cooperates with the valve 16 to relieve pressure.

[0038] More specifically, the first section of the water collection well 4 is welded together by two finished iron barrels 17, and a carbon tube 18 is used to connect the two finished iron barrels 17 at a height of 40 cm. A plurality of groups of vertically distributed through holes 19 with equal intervals are provided on the outer side of the lower end of the finished iron barrel 17, and each group is provided with a plurality of through holes 19 distributed in a circular array. The setting of the through holes 19 plays a role in guiding water.

[0039] The present invention also discloses a method for draining and plugging high-temperature bedrock cracks in a foundation pit, comprising the following parts:

[0040] A. Spring 1:

[0041] A-1: Dig a pit 5 with a depth of not less than 1500mm and a diameter of 2000mm at the spring 1, mainly used for pumping water during the construction of the sump 3;

[0042] A-2: Fill the pit 5 with graded crushed stone 6, then lay a non-woven fabric layer 7 on the graded crushed stone 6 to prevent cement slurry from flowing into the pit when pouring the cushion layer 8, and then pour the cushion layer 8 on the upper surface of the non-woven fabric layer 7. When pouring the cushion layer 8, set a steel mesh 9 in the cushion layer 8. The steel mesh 9 is a 12@200 bidirectional single-layer steel mesh;

[0043] B. Drainage ditch 2: Dig a 500mmX1000mm drainage ditch 2 between the spring 1 and the water collection well 4 to ensure that water can be smoothly discharged into the water collection well 4;

[0044] C. Water collection well 4 parts:

[0045] C-1: Dig a water collection pit 3 at the water collection well 4, and then set a water collection well 4 at the bottom of the water collection pit 3. The water collection well 4 is 500mm lower than the water filter layer;

[0046] C-2: Two finished iron barrels 17 with a diameter of 60 cm and a height of 90 cm are welded to form the first section of the water collection well 4. Holes are evenly opened below 30 cm on the outer wall of the finished iron barrel 17. At the same time, a 20 mm thick carbon pipe 18 is used to connect the two finished iron barrels 17 at a height of 40 cm to increase the capacity of the water collection well 4.

[0047] C-3: The first section of the water collection well 4 is within 500mm of the periphery, and the graded crushed stone 6 is used to fill the water collection well 4. The part of the water collection well 4 extending out of the cushion layer 8 is poured with C20 concrete 10 together with the periphery of the water collection pit 3 to the top of the chopstick board. After the pouring of C20 concrete 10 is completed for 48 hours, it is sealed;

[0048] D. Blocking of water outlet:

[0049] D-1: Before plugging, lower the water level of the water collection well 4 to 200mm below the cushion layer 8 to ensure that there is no water during plugging;

[0050] D-2: Use a rubber water-stopping airbag 11 to first block one of the water collection wells 4. The rubber water-stopping airbag 11 is 200 mm lower than the wellhead of the water collection well 4. The size of the rubber water-stopping airbag 11 is φ600 mm×650 mmX20 mm.

[0051] D-3: After the rubber water-stop airbag 11 is inflated, C 30 early-strength concrete 12 is poured on the upper side of the rubber water-stop airbag 11, and reinforcing ribs 13 are arranged inside the C 30 early-strength concrete 12. The reinforcing ribs 13 are arranged in a single layer and in two directions at 12@200;

[0052] D-4: When another water collection well 4 is blocked, a 5mm thick steel plate layer 14 is set on the top of the finished iron barrel 17. The middle of the steel plate layer 14 is connected with a pressure relief pipe 15 through a flange. The pressure relief pipe 15 is connected to the bottom of the inner cavity of the water collection well 4 at the edge of the pit with a φ100 galvanized steel pipe, and a valve 16 is added at the bottom of the pressure relief pipe 15. The valve is closed 48 hours after the pouring of C20 concrete 10 is completed.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water drainage and plugging structure for high-temperature bedrock cracks in a foundation pit, comprising a spring (1) and a sump (3), characterized in that: The spring (1) and the sump (3) are connected via a drainage ditch (2); two sump wells (4) arranged side by side are arranged at the bottom of the sump (3); a pit groove (5) is provided at the opening of the spring (1); the insides of the pit groove (5), the sump (3) and the sump well (4) are all paved with graded crushed stone (6); a non-woven fabric layer (7) is bonded to the upper surface of the graded crushed stone (6); a cushion layer (8) is cast on the upper surface of the non-woven fabric layer (7); a steel mesh (9) is arranged inside the cushion layer (8); C20 concrete (10) is cast on the outer side of the portion of the sump (4) protruding from the cushion layer (8); a rubber water-stopping airbag (11) is arranged on the inner side of the upper end of one of the sump wells (4); and C30 early-strength concrete (12) is cast at the wellhead of one of the sump wells (4); 30 The interior of the early-strength concrete (12) is inlaid with reinforcing ribs (13); the lower end of the other water collection well (4) is provided with a steel plate layer (14), the middle of the steel plate layer (14) is penetrated by a pressure relief pipe (15), the pressure relief pipe (15) is sealed and connected to the steel plate layer (14) through a sealing flange, and the bottom of the pressure relief pipe (15) is connected to a valve (16); the first section of the water collection well (4) is welded and connected by two finished iron barrels (17), and a carbon tube (18) is used to connect the two finished iron barrels (17) at a height of 40 cm; the outer side of the lower end of the finished iron barrel (17) is provided with a plurality of groups of vertically distributed through holes (19) with equal spacing, and each group is provided with a plurality of through holes (19) distributed in a circular array; the size of the rubber water-stop airbag (11) is φ600mm×650mmX20mm, and the C When the 30 early strength concrete is poured, a reinforcing rib (13) is arranged inside the concrete, and the reinforcing rib (13) is arranged in a 12@200 single layer and in two directions.

2. A method for draining and plugging high-temperature bedrock cracks in a foundation pit, characterized in that: Includes the following sections: A. Spring (1) Location: A-1: Dig a pit (5) with a depth of not less than 1500mm and a diameter of 2000mm at the spring (1); A-2: Fill the pit (5) with graded crushed stone (6), then lay a non-woven fabric layer (7) on the graded crushed stone (6), and then pour a cushion layer (8) on the upper surface of the non-woven fabric layer (7); B. Drainage ditch (2): Dig a 500mm x 1000mm drainage ditch (2) between the spring (1) and the water collection well (4); C. Water collection well (4) location: C-1: digging a water collection pit (3) at the water collection well (4), and then setting a water collection well (4) at the bottom of the water collection pit (3); C-2: Two finished iron barrels (17) with a diameter of 60 cm and a height of 90 cm are welded to form the first section of the water collection well (4), holes are evenly opened below 30 cm on the outer wall of the finished iron barrels (17), and a 20 mm thick carbon pipe (18) is used to connect the two finished iron barrels (17) at a height of 40 cm; C-3: The first section of the water collection well (4) is filled with graded crushed stone (6) within a range of 500 mm. The part of the water collection well (4) extending out of the cushion layer (8) is poured with C20 concrete (10) together with the surrounding of the water collection pit (3) to the top of the chopstick board. After the pouring of C20 concrete (10) is completed for 48 hours, it is sealed; D. Blocking of water outlet: D-1: Before plugging, lower the water level of the water collection well (4) to 200 mm below the cushion layer (8) to ensure that there is no water during plugging; D-2: Use a rubber water-stopping airbag (11) to first block one of the water collection wells (4), and the rubber water-stopping airbag (11) is 200 mm lower than the wellhead of the water collection well (4); D-3: After the rubber water-stop airbag (11) is inflated, C30 early-strength concrete (12) is poured on the upper side of the rubber water-stop airbag (11), and reinforcing ribs (13) are arranged inside the C30 early-strength concrete (12); D-4: When another water collection well (4) is blocked, a 5 mm thick steel plate layer (14) is set on the top of the finished iron barrel (17). The middle of the steel plate layer (14) is connected to a pressure relief pipe (15) through a flange. The pressure relief pipe (15) is connected to the bottom of the inner cavity of the water collection well (4) at the edge of the pit using a φ100 galvanized steel pipe. A valve (16) is added at the bottom of the pressure relief pipe (15). The valve is closed 48 hours after the pouring of C20 concrete (10) is completed.

3. A method for draining and plugging high-temperature bedrock cracks in a foundation pit according to claim 2, characterized in that: When the cushion layer (8) is poured at the spring eye (1), a steel mesh (9) is arranged in the cushion layer (8), and the steel mesh (9) is a 12@200 bidirectional single-layer steel mesh.

4. A method for draining and plugging high-temperature bedrock cracks in a foundation pit according to claim 2, characterized in that: The water collection well (4) is 500 mm below the water filtration layer.

Images