Low water head construction adit plugging and leaking stoppage construction structure

Abstract

The utility model discloses a low-water-head construction adit plugging and leaking stoppage construction structure, and belongs to the technical field of low-water-head construction adits, the low-water-head construction adit plugging and leaking stoppage construction structure comprises a construction adit body, a concrete leaking stoppage plate body is connected to the interior of the construction adit body, a flexible sleeve is arranged on the outer ring of the concrete leaking stoppage plate body, and a spring is installed in the flexible sleeve; fixing rings are fixedly mounted at the bottom ends of the springs, outer rings of the fixing rings are fixedly mounted at the bottoms of the flexible sleeves, first steel bars are fixedly mounted at the bottom ends of the springs and penetrate through the fixing rings to be fixedly mounted in the concrete leaking stoppage plate body, and a plurality of flexible sleeves are arranged on the outer rings of the concrete leaking stoppage plate body; a consolidation grouting hole is formed in the outer ring of the concrete leaking stoppage plate body, a steel pipe is pre-buried in the consolidation grouting hole, a leading-out steel pipe is fixedly installed at the top end of the steel pipe, and one end of the leading-out steel pipe penetrates through a construction branch hole body; deformation, caused by grouting, of the surrounding rock is compensated to a certain degree, and the integrity and the sealing performance of the plugging structure can be kept easily.

Description

Technical Field

[0001] The present application relates to the technical field of low-head construction branch holes, and in particular to a low-head construction branch hole sealing and leak-stopping construction structure. Background Art

[0002] In water conservancy and hydropower projects, multiple branch tunnels are often designed to meet construction schedule requirements. After construction is completed, these branch tunnels need to be sealed to ensure the safe operation of the main tunnel.

[0003] However, the surrounding rock may deform during the grouting process, resulting in the existing sealing structure not being able to fit tightly against the surrounding rock surface, leading to leakage problems, and the sealing performance needs to be improved. Utility Model Content

[0004] In response to the shortcomings of the existing technology, this application provides a low-head construction branch hole sealing and plugging construction structure, which overcomes the shortcomings of the existing technology and aims to solve the problem that the surrounding rock may deform during the grouting process, resulting in the existing sealing structure being unable to fit tightly with the surrounding rock surface, causing leakage, and the problem that the sealing performance needs to be improved.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a low-head construction branch hole sealing and plugging construction structure, comprising a construction branch hole body, the interior of the construction branch hole body is connected to a concrete plugging plate body, the outer ring of the concrete plugging plate body is provided with a flexible sleeve, the interior of the flexible sleeve is installed with a spring, the bottom end of the spring is fixedly installed with a fixing ring, the outer ring of the fixing ring is fixedly installed on the bottom of the flexible sleeve, the bottom end of the spring is fixedly installed with a first steel bar, the first steel bar passes through the fixing ring and is fixedly installed inside the concrete plugging plate body, the outer ring of the concrete plugging plate body is provided with several groups of flexible sleeves, the outer ring of the concrete plugging plate body is provided with consolidation grouting holes, and steel pipes are pre-buried at the consolidation grouting holes, the top end of the steel pipe is fixedly installed with a lead-out steel pipe, one end of the lead-out steel pipe passes through the construction branch hole body.

[0006] By adopting the above technical solution, the flexible sleeve is connected to several groups of lead-out steel pipes through external grouting equipment. At this time, the tightness between the flexible sleeve and the construction branch tunnel body is improved by the spring. The slurry enters the steel pipe through the lead-out steel pipe and then enters the consolidation grouting hole. The slurry will penetrate along the channel of the consolidation grouting hole and diffuse into the cracks and pores of the surrounding rock, realizing the consolidation grouting of the surrounding rock. When the slurry pressure increases, the flexible sleeve will further expand when it absorbs water, and fit more closely to the surface of the surrounding rock, compensating to a certain extent for the deformation of the surrounding rock caused by grouting, which is conducive to maintaining the integrity and sealing of the sealing structure.

[0007] As a preferred technical solution of the present application, a guide rod is provided inside the spring, and a sliding rod is slidably connected to the top end of the guide rod.

[0008] By adopting the above technical solution, the guide rod guides the spring, and the top end of the guide rod is slidably connected to the slide rod, so that the slide rod extends synchronously when the flexible sleeve expands, thereby improving practicality during use.

[0009] As a preferred technical solution of the present application, the concrete plugging plate includes a first concrete plate, which is installed inside the construction branch tunnel. A waterproof layer is fixedly installed on one side of the first concrete plate, and a second concrete plate is installed on one side of the waterproof layer.

[0010] By adopting the above technical solution, a waterproof layer is added between the first concrete slab and the second concrete slab to form a double waterproof barrier, thereby further improving the waterproof performance of the structure.

[0011] As a preferred technical solution of the present application, the number of the springs and the lead-out steel pipes is at least four groups, and the springs and the lead-out steel pipes are arranged at intervals.

[0012] By adopting the above technical solution, the springs and the lead-out steel pipes are arranged at intervals, which is conducive to the four groups of springs to evenly support the flexible sleeve, and the slurry enters the surrounding rock evenly and smoothly through the lead-out steel pipe for consolidation grouting, which is conducive to improving the sealing effect.

[0013] As a preferred technical solution of the present application, a gap is formed between the consolidation grouting hole and the steel pipe, and an anchoring agent is filled in the gap.

[0014] By adopting the above technical solution, the gap between the consolidation grouting hole and the steel pipe is filled with the anchoring agent to prevent slurry leakage during the grouting process.

[0015] As a preferred technical solution of the present application, a plurality of groups of second steel bars are fixedly installed on the outer ring of the lead-out steel pipe, and one side of the second steel bar is installed inside the construction branch tunnel body.

[0016] By adopting the above technical solution, the stability of the lead-out steel pipe when connected to the construction branch tunnel is enhanced by the second steel bar.

[0017] As a preferred technical solution of the present application, the flexible sleeve is made of expanded rubber.

[0018] By adopting the above technical solution, the flexible sleeve is made of collision rubber. When it comes into contact with water or other liquids, it absorbs liquid molecules and expands in volume, thereby fitting more closely to the surface of the surrounding rock.

[0019] As a preferred technical solution of the present application, a soft pad is fixedly installed on the top end of the spring, and the soft pad is fixedly installed on the inner wall of the flexible sleeve.

[0020] By adopting the above technical solution, the protection of the flexible sleeve is improved by the soft pad, and the possibility of the spring causing damage to the flexible sleeve is reduced.

[0021] Beneficial effects of this application:

[0022] 1. It is connected to several groups of lead-out steel pipes through external grouting equipment. At this time, the tightness between the flexible sleeve and the construction branch tunnel is improved by the spring. The slurry enters the steel pipe through the lead-out steel pipe and then enters the consolidation grouting hole. The slurry will penetrate along the channel of the consolidation grouting hole and diffuse into the cracks and pores of the surrounding rock to achieve consolidation grouting of the surrounding rock. When the slurry pressure increases, the flexible sleeve will further expand when it absorbs water, and fit more closely with the surface of the surrounding rock, compensating to a certain extent for the deformation of the surrounding rock caused by grouting, which is conducive to maintaining the integrity and sealing of the sealing structure.

[0023] 2. The guide rod guides the spring, and a slide rod is slidably connected to the top of the guide rod, so that the slide rod extends synchronously with the expansion of the flexible sleeve, thereby improving the practicality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of this application;

[0026] Figure 3 This is a schematic diagram of the concrete plugging plate structure;

[0027] Figure 4 This is a partial structural diagram of this application.

[0028] In the figure: 1. Construction branch tunnel; 2. Concrete plugging plate; 201. First concrete slab; 202. Waterproof layer; 203. Second concrete slab; 3. Flexible sleeve; 4. Spring; 5. Fixing ring; 6. First steel bar; 9. Consolidation grouting hole; 10. Steel pipe; 11. Lead-out steel pipe; 12. Guide rod; 13. Sliding rod; 14. Second steel bar; 15. Cushion. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] Reference Figure 1-3 A low-head construction branch hole sealing and plugging construction structure includes a construction branch hole body 1, the interior of the construction branch hole body 1 is connected to a concrete plugging plate body 2, the outer ring of the concrete plugging plate body 2 is provided with a flexible sleeve 3, a spring 4 is installed inside the flexible sleeve 3, the bottom end of the spring 4 is fixedly installed with a fixing ring 5, the outer ring of the fixing ring 5 is fixedly installed on the bottom of the flexible sleeve 3, the bottom end of the spring 4 is fixedly installed with a first steel bar 6, the first steel bar 6 is passed through the fixing ring 5 and fixedly installed inside the concrete plugging plate body 2, the outer ring of the concrete plugging plate body 2 is fixedly installed on the bottom of the flexible sleeve 3, and the outer ring of the concrete plugging plate body 2 is fixedly installed on the bottom of the flexible sleeve 3. The ring is provided with several groups of flexible sleeves 3, the outer ring of the concrete plugging plate body 2 is provided with consolidation grouting holes 9, and a steel pipe 10 is pre-buried at the consolidation grouting hole 9, and a lead-out steel pipe 11 is fixedly installed at the top of the steel pipe 10, and one end of the lead-out steel pipe 11 is passed through the construction branch hole body 1; the concrete plugging plate body 2 includes a first concrete plate 201, the first concrete plate 201 is installed inside the construction branch hole body 1, a waterproof layer 202 is fixedly installed on one side of the first concrete plate 201, and a second concrete plate 203 is installed on one side of the waterproof layer 202.

[0031] It is connected to several groups of lead-out steel pipes 11 through external grouting equipment. At this time, the tightness between the flexible sleeve 3 and the construction branch cave body 1 is improved by the spring 4. The slurry enters the steel pipe 10 through the lead-out steel pipe 11 and then enters the consolidation grouting hole 9. The slurry will penetrate along the channel of the consolidation grouting hole 9 and diffuse into the cracks and pores of the surrounding rock to achieve consolidation grouting of the surrounding rock. When the slurry pressure increases, the flexible sleeve 3 will further expand when it absorbs water, and fit more closely to the surface of the surrounding rock, compensating to a certain extent for the deformation of the surrounding rock caused by grouting, which is conducive to maintaining the integrity and sealing of the sealing structure; by adding a waterproof layer 202 between the first concrete slab 201 and the second concrete slab 203, a double waterproof barrier is formed to further improve the waterproof performance of this structure.

[0032] Reference Figure 1 The spring 4 is provided with a guide rod 12 inside, and the top of the guide rod 12 is slidably connected to the slide rod 13; the number of the spring 4 and the lead-out steel pipe 11 is at least four groups, and the spring 4 and the lead-out steel pipe 11 are arranged at intervals; the outer ring of the lead-out steel pipe 11 is fixedly installed with several groups of second steel bars 14, and one side of the second steel bar 14 is installed inside the construction branch cave body 1; the guide rod 12 plays a guiding role on the spring 4, and at the same time, the slide rod 13 is slidably connected to the top of the guide rod 12, so that the slide rod 13 extends synchronously when the flexible sleeve 3 expands, thereby improving the practicality during use; the spring 4 and the lead-out steel pipe 11 are arranged at intervals, which is beneficial for the four groups of springs 4 to evenly support the flexible sleeve 3, and the slurry enters the surrounding rock evenly and smoothly through the lead-out steel pipe 11 for consolidation grouting, which is beneficial to improve the sealing effect; the second steel bar 14 is used to enhance the stability of the lead-out steel pipe 11 when connected to the construction branch cave body 1.

[0033] Reference Figure 1 A gap is formed between the consolidation grouting hole 9 and the steel pipe 10, and an anchoring agent is filled in the gap; the flexible sleeve 3 is made of rubber; the gap between the consolidation grouting hole 9 and the steel pipe 10 is filled with the anchoring agent to prevent slurry leakage during the grouting process; a soft pad 15 is fixedly installed on the top of the spring 4, and the soft pad 15 is fixedly installed on the inner wall of the flexible sleeve 3.

[0034] Reference Figure 1 A cushion 15 is fixedly installed on the top of the spring 4, and the cushion 15 is fixedly installed on the inner wall of the flexible sleeve 3; the cushion 15 improves the protection of the flexible sleeve 3 and reduces the possibility of the spring 4 causing damage to the flexible sleeve 3.

[0035] Working principle: It is connected to several groups of lead-out steel pipes 11 through external grouting equipment. At this time, the tightness between the flexible sleeve 3 and the construction branch cave body 1 is improved by the spring 4. The slurry enters the steel pipe 10 through the lead-out steel pipe 11 and then enters the consolidation grouting hole 9. The slurry will penetrate along the channel of the consolidation grouting hole 9 and diffuse into the cracks and pores of the surrounding rock to achieve consolidation grouting of the surrounding rock. When the slurry pressure increases, the flexible sleeve 3 will further expand when it absorbs moisture, and fit more closely with the surface of the surrounding rock, compensating to a certain extent for the deformation of the surrounding rock caused by grouting, which is conducive to maintaining the integrity and sealing of the sealing structure. The spring 4 is guided by the guide rod 12, and the sliding rod 13 is connected to the top of the guide rod 12 in a sliding manner, so that the sliding rod 13 extends synchronously with the expansion of the flexible sleeve 3, thereby improving the practicality during use.

[0036] A waterproof layer 202 is added between the first concrete slab 201 and the second concrete slab 203 to form a double waterproof barrier, further improving the waterproof performance of the structure. The springs 4 and the lead-out steel pipe 11 are arranged at intervals, which facilitates the four groups of springs 4 to evenly support the flexible sleeve 3. The slurry enters the surrounding rock evenly and smoothly through the lead-out steel pipe 11 for consolidation grouting, which facilitates improving the sealing effect.

[0037] At the same time, the gap between the consolidation grouting hole 9 and the steel pipe 10 is filled with an anchoring agent to prevent slurry leakage during the grouting process; the second steel bar 14 is used to enhance the stability of the connection between the lead-out steel pipe 11 and the construction branch hole 1;

[0038] In addition, a cushion 15 is fixedly mounted on the top of the spring 4 , and the cushion 15 is fixedly mounted on the inner wall of the flexible sleeve 3 . The cushion 15 improves the protection of the flexible sleeve 3 and reduces the possibility of the spring 4 causing damage to the flexible sleeve 3 .

[0039] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A low-head branch hole sealing and leak-proof construction structure, comprising a branch hole body (1), characterized in that: The interior of the construction branch hole (1) is connected to a concrete plugging plate (2); the outer ring of the concrete plugging plate (2) is provided with a flexible sleeve (3); a spring (4) is installed inside the flexible sleeve (3); a fixing ring (5) is fixedly installed at the bottom end of the spring (4); the outer ring of the fixing ring (5) is fixedly installed at the bottom of the flexible sleeve (3); a first steel bar (6) is fixedly installed at the bottom end of the spring (4); the first steel bar (6) passes through the fixing ring (5) and is fixedly installed inside the concrete plugging plate (2); the outer ring of the concrete plugging plate (2) is provided with a plurality of groups of flexible sleeves (3); the outer ring of the concrete plugging plate (2) is provided with consolidation grouting holes (9), and a steel pipe (10) is pre-buried at the consolidation grouting holes (9); a lead-out steel pipe (11) is fixedly installed at the top end of the steel pipe (10); one end of the lead-out steel pipe (11) passes through the construction branch hole (1).

2. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: A guide rod (12) is provided inside the spring (4), and a sliding rod (13) is slidably connected to the top end of the guide rod (12).

3. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: The concrete plugging plate body (2) comprises a first concrete plate (201), the first concrete plate (201) being installed inside the construction branch hole body (1), a waterproof layer (202) being fixedly installed on one side of the first concrete plate (201), and a second concrete plate (203) being installed on one side of the waterproof layer (202).

4. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: The number of the springs (4) and the lead-out steel pipes (11) is at least four groups, and the springs (4) and the lead-out steel pipes (11) are arranged at intervals.

5. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: A gap is formed between the consolidation grouting hole (9) and the steel pipe (10), and an anchoring agent is filled in the gap.

6. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: Several groups of second steel bars (14) are fixedly mounted on the outer ring of the lead-out steel pipe (11), and one side of the second steel bars (14) is mounted inside the construction branch tunnel body (1).

7. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: The material of the flexible sleeve (3) is rubber.

8. A low-head construction branch hole sealing and leak-proof construction structure according to claim 1, characterized in that: A soft pad (15) is fixedly mounted on the top end of the spring (4), and the soft pad (15) is fixedly mounted on the inner wall of the flexible sleeve (3).

Images