Grouting anti-pollution device for shield to pass through earth surface karst cave in karst area

By designing a shield structure to grout and anti-pollution device through surface caves in karst areas, using a combined structure of components such as connecting silo and intubation, the problem of slurry spilling caused by the grouting tube back and forth is solved, and the pollution prevention effect of the grouting process is achieved.

CN223089335UActive Publication Date: 2025-07-11CHINA RAILWAY NO 8 ENG GRP CO LTD +1
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Patent Information

Application Number
CN202422282650.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-19
Publication Date
2025-07-11
Estimated Expiration
2034-09-19

AI Technical Summary

Technical Problem

During the grouting process of caves, the grouting pipe needs to be pulled back and forth, causing the slurry to flow out of the grouting pipe and causing surface pollution.

Method used

A shield structure grouting and anti-pollution device through the surface cave of karst area was designed. By connecting the silo, the tube, the support rod, the adjustment rod, the air injection pipe, the gas pipe, the disk, the rod, the block, the support spring and the sealing ring, the sealing and angle control of the grouting pipe is achieved to avoid the spilling of the slurry.

Benefits of technology

Effectively prevent slurry from contaminating the surface, improve the sealing performance and angle control capabilities of the grouting tube, and ensure the cleanliness of the grouting process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of karst cave grouting, in particular to a grouting anti-pollution device for a shield to penetrate through a karst area earth surface karst cave, which comprises a connecting bin and an inserting pipe, a supporting rod is fixedly connected to the outer surface of the connecting bin, an adjusting rod is sleeved on the surface of the supporting rod through threads, and a surface passage of the inserting pipe is connected with an air injection pipe. The outer surface of the gas injection pipe is sleeved with a gas conveying pipe, the outer surface of the insertion pipe is sleeved with an abutting disc, the outer surface of the abutting disc is connected with an abutting rod in a penetrating mode, and a movable groove is formed in the surface of the gas injection pipe in a penetrating mode. The elastic rotation effect of the abutting block on the gas injection pipe is achieved through the connection of the abutting block and the supporting spring, the sleeving and sealing operation of the gas delivery pipe on the gas injection pipe is completed through the connection of the supporting spring and the sealing ring, and the regulation and control effect of the using length of the binding belt on the supporting block is achieved through the connection of the control rod and the pressing plate. And the angle limiting performance of the grouting pipe used on the connecting bin is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of karst cave grouting, in particular to a pollution prevention device for shield tunneling through surface karst caves in karst areas during grouting. Background Technique

[0002] A karst cave is a cave formed by groundwater eroding and dissolving rocks. Its spatial structure is unstable and prone to geological disasters. The principle of karst cave grouting is to inject materials to fill the karst cave space, enhance its bearing capacity and stability, so as to achieve the purpose of preventing and controlling geological disasters. When operating existing karst cave grouting, during the grouting process, the grouting pipe needs to be pulled back and forth to facilitate the injection of slurry. During this process, the slurry will flow out of the grouting pipe, causing pollution to the surface of the grouting port. Content of the Utility Model

[0003] The purpose of the utility model is to provide a pollution prevention device for shield tunneling through surface karst caves in karst areas during grouting, so as to solve the problem that during the grouting process, the grouting pipe needs to be pulled back and forth to facilitate the injection of slurry, and during this process, the slurry will flow out of the grouting pipe, causing pollution to the surface of the grouting port as mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution. A pollution prevention device for shield tunneling through surface karst caves in karst areas during grouting includes a connection bin and an insertion pipe. The outer surface of the connection bin is fixedly connected with a support rod. The surface of the support rod is sleeved with an adjusting rod through a thread. The surface of the insertion pipe is connected to an air injection pipe through a passage. The outer surface of the air injection pipe is sleeved with an air delivery pipe. The outer surface of the insertion pipe is sleeved with a resisting disc. The outer surface of the resisting disc is penetrated and connected with a resisting rod. An activity groove is penetrated and opened on the surface of the air injection pipe. An abutting block is movably connected to the inner side of the activity groove. A support spring is fixedly connected to the surface of the abutting block. A sealing ring is fixedly connected to the outer surface of the abutting block.

[0005] Preferably, the insertion pipe and the connection bin are connected through a passage. The insertion pipe is inserted into the karst cave grouting. The air delivery pipe is connected to the insertion pipe through the air injection pipe through a passage.

[0006] Preferably, the support rods are distributed in three groups on the outer surface of the connection bin. The adjusting rod is correspondingly connected to the support rod. The resisting disc is in a disc shape. The resisting rods are symmetrically distributed in two groups on both sides of the resisting disc.

[0007] Preferably, the abutting block is rotationally connected to the air injection pipe through the activity groove. The outer surface of the abutting block is in an arc shape. The abutting block is elastically rotationally connected to the activity groove through the support spring.

[0008] Preferably, the abutting blocks are evenly distributed on the outer surface of the injection pipe, both ends of the support spring are fixedly connected to the surfaces of the abutting blocks and the injection pipe, the sealing ring is made of rubber, and the sealing ring is sleeved on the outer surface of the injection pipe through the abutting blocks.

[0009] Preferably, a fixing block is fixedly connected to the upper surface of the connection bin, a connection cylinder is fixedly connected to the surface of the fixing block, a screw rod is threadedly connected to the surface of the connection cylinder, a support block is fixedly connected to the surface of the screw rod, a restraint belt is arranged on the surface of the support block, a slot is formed through the surface of the support block, a control rod penetrates through the outer surface of the support block, and a pressing plate is movably connected to the surface of the control rod.

[0010] Preferably, the support block acts on the upper position of the connection bin through the screw rod and the connection cylinder, one end of the restraint belt is fixedly connected to the support block, the other end of the restraint belt penetrates through the surface of the support block through the slot, and the pressing plate is in abutting contact with the restraint belt through the control rod.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. Through the connection of the connection bin and the insertion pipe, the protection effect of grouting is realized, avoiding the spillage of slurry. Through the connection of the injection pipe and the air delivery pipe, and the connection of the air delivery pipe and the air pump, the air injection operation of the insertion pipe is realized, facilitating the flow of slurry. Through the connection of the movable groove and the abutting block, and the connection of the abutting block and the support spring, the elastic rotation effect of the abutting block on the injection pipe is realized. Through the connection of the support spring and the sealing ring, the socket sealing operation of the air delivery pipe on the injection pipe is completed.

[0013] 2. Through the connection of the abutting plate and the abutting rod, the position of the abutting plate on the insertion pipe is adjusted under the action of the abutting rod. Through the connection of the support rod and the adjusting rod, the position control effect of the connection bin during use is achieved under the action of the adjusting rod. Through the connection of the fixing block and the connection cylinder, and the connection of the connection cylinder and the screw rod, and the connection of the screw rod and the support block, the support effect of the acting position of the support block is realized. Through the connection of the restraint belt and the slot, and the connection of the control rod and the pressing plate, the control effect of the use length of the restraint belt on the support block is achieved, improving the angle limitation performance of the grouting pipe when used on the connection bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the engineering schematic diagram of the present utility model;

[0015] Figure 2 is the front view three-dimensional schematic diagram of the structure of the present utility model;

[0016] Figure 3 is the front view sectional three-dimensional schematic diagram of the structure of the present utility model;

[0017] Figure 4 Schematic diagram of the three-dimensional section of the support block of the present utility model;

[0018] Figure 5 For the present utility model Figure 3 Partial three-dimensional exploded view of the structure of the injection gas pipe in the present utility model.

[0019] In the figure: 1. Connection bin; 2. Insertion pipe; 3. Support rod; 31. Adjusting rod; 4. Injection gas pipe; 41. Gas transmission pipe; 42. Activity slot; 43. Blocking block; 44. Support spring; 45. Sealing ring; 5. Blocking plate; 51. Blocking rod; 6. Fixed block; 61. Connection cylinder; 62. Screw rod; 63. Support block; 64. Binding belt; 65. Insertion slot; 66. Control rod; 67. Pressing plate. Specific implementation mode

[0020] Please refer to Figures 1-5 One embodiment provided by the present utility model:

[0021] A grouting anti-pollution device for shield tunneling through surface karst caves in karst areas, including a connection bin 1 and an insertion pipe 2. The outer surface of the connection bin 1 is fixedly connected with a support rod 3. The surface of the support rod 3 is sleeved with an adjusting rod 31 through threads. The surface of the insertion pipe 2 is connected to an injection gas pipe 4 through a passage. The outer surface of the injection gas pipe 4 is sleeved with a gas transmission pipe 41. The outer surface of the insertion pipe 2 is sleeved with a blocking plate 5. The outer surface of the blocking plate 5 is penetrated and connected with a blocking rod 51. The surface of the injection gas pipe 4 is penetrated and provided with an activity slot 42. The inner side of the activity slot 42 is movably connected with a blocking block 43. The surface of the blocking block 43 is fixedly connected with a support spring 44. The outer surface of the blocking block 43 is fixedly connected with a sealing ring 45. Through the connection of the connection bin 1 and the support rod 3, under the connection of the support rod 3 and the adjusting rod 31, the regulation effect of the use position of the connection bin 1 is realized. Under the connection of the blocking plate 5 and the blocking rod 51, through the abutment of the blocking rod 51 and the insertion pipe 2, the further use support operation of the insertion pipe 2 is completed.

[0022] Furthermore, the insertion pipe 2 and the connection bin 1 are connected through a passage. The insertion pipe 2 is inserted into the karst cave grouting. The gas transmission pipe 41 is connected to the insertion pipe 2 through the injection gas pipe 4 through a passage. Through the connection of the insertion pipe 2 and the connection bin 1, under the action of the insertion pipe 2, the grouting operation of the karst cave is realized. Under the connection of the injection gas pipe 4 and the gas transmission pipe 41, under the action of the gas transmission pipe 41 and the air pump, the flow of the slurry in the insertion pipe 2 is assisted.

[0023] Furthermore, the support rods 3 are distributed in three groups on the outer surface of the connection bin 1. The adjusting rod 31 is correspondingly connected to the support rod 3. The blocking plate 5 is in a disc shape. The blocking rods 51 are symmetrically distributed in two groups on both sides of the blocking plate 5. Through the connection of the support rod 3 and the adjusting rod 31, under the threaded connection of the adjusting rod 31 and the support rod 3, the support operation during the use of the connection bin 1 is completed. Under the connection of the blocking plate 5 and the blocking rod 51, through the action of the blocking rod 51, the regulation effect of the position of the blocking plate 5 on the insertion pipe 2 is realized.

[0024] Further, the abutting block 43 is rotatably connected to the injection gas pipe 4 through the movable slot 42. The outer surface of the abutting block 43 is arc-shaped. The abutting block 43 is elastically rotatably connected to the movable slot 42 through the support spring 44. Through the connection of the injection gas pipe 4 and the movable slot 42, and under the connection of the movable slot 42 and the abutting block 43, the regulation effect of the connection angle of the abutting block 43 on the injection gas pipe 4 is achieved.

[0025] Further, the abutting blocks 43 are evenly distributed on the outer surface of the injection gas pipe 4. Both ends of the support spring 44 are fixedly connected to the surfaces of the abutting block 43 and the injection gas pipe 4. The sealing ring 45 is made of rubber. The sealing ring 45 is sleeved on the outer surface of the injection gas pipe 4 through the abutting block 43. Through the connection of the abutting block 43 and the support spring 44, under the action of the support spring 44, the regulation effect of the connection angle of the abutting block 43 on the movable slot 42 is achieved. Under the connection of the sealing ring 45 and the abutting block 43, through the abutting contact between the sealing ring 45 and the injection gas pipe 4, the connection sealing performance of the gas transmission pipe 41 on the injection gas pipe 4 is improved.

[0026] Further, a fixing block 6 is fixedly connected to the upper surface of the connection bin 1. A connection cylinder 61 is fixedly connected to the surface of the fixing block 6. A screw rod 62 is threadedly connected to the surface of the connection cylinder 61. A support block 63 is fixedly connected to the surface of the screw rod 62. A restraint belt 64 is arranged on the surface of the support block 63. A slot 65 is penetrated and opened on the surface of the support block 63. A control rod 66 is penetrated and connected to the outer surface of the support block 63. A pressing plate 67 is movably connected to the surface of the control rod 66. Through the connection of the connection bin 1 and the fixing block 6, under the connection of the fixing block 6 and the connection cylinder 61, and the threaded connection between the screw rod 62 and the connection cylinder 61, the regulation and support operation of the use position of the support block 63 on the connection bin 1 is completed.

[0027] Further, the support block 63 acts on the upper position of the connection bin 1 through the screw rod 62 and the connection cylinder 61. One end of the restraint belt 64 is fixedly connected to the support block 63. The other end of the restraint belt 64 penetrates through the surface of the support block 63 through the slot 65. The pressing plate 67 is in abutting contact with the restraint belt 64 through the control rod 66. Through the connection of the support block 63 and the restraint belt 64, through the penetrated connection of the restraint belt 64 and the slot 65, and the connection of the control rod 66 and the pressing plate 67, the pressing plate 67 is made to abut and support the restraint belt 64, and the regulation operation of the use length of the restraint belt 64 on the support block 63 is completed.

[0028] Working principle: When using the connection bin 1, insert the injection tube 2 into the grouting hole. Under the connection of the support rod 3 and the adjusting rod 31, and through the connection of the abutting plate 5 and the abutting rod 51, the support effect of the using position of the connection bin 1 is achieved. Through the connection of the gas injection pipe 4 and the movable groove 42, under the connection of the movable groove 42 and the abutting block 43, and the connection of the abutting block 43 and the support spring 44, the elastic connection operation of the abutting block 43 on the gas injection pipe 4 is completed. Under the connection of the sealing ring 45 and the abutting block 43, the sealing performance of the connection between the gas transmission pipe 41 and the gas injection pipe 4 is improved. Under the connection of the fixing block 6 and the connecting cylinder 61, through the connection of the connecting cylinder 61 and the screw rod 62, the regulation operation of the using position of the support block 63 is carried out. Under the through connection of the binding belt 64 and the slot 65, through the connection of the control rod 66 and the pressing plate 67, the regulation effect of the position of the binding belt 64 in the slot 65 is achieved, and the angle limitation operation of the placement of the grouting pipe in the connection bin 1 is realized. Under the action of the connection bin 1 and the injection tube 2, the diversion operation of the grouting liquid is completed, avoiding the pollution of the ground surface by the slurry.

Claims

1. A grouting anti-pollution device for shield tunneling through surface karst caves in a karst area, comprising a connection bin and an insertion pipe, characterized in that: The outer surface of the connection bin is fixedly connected with a support rod, the surface of the support rod is sleeved with an adjusting rod through a thread, the surface of the insertion tube is connected with an air injection tube through a passage, the outer surface of the air injection tube is sleeved with an air delivery tube, the outer surface of the insertion tube is sleeved with a pressing disc, the outer surface of the pressing disc is penetrated and connected with a pressing rod, the surface of the air injection tube is penetrated and provided with a movable groove, the inner side of the movable groove is movably connected with a pressing block, the surface of the pressing block is fixedly connected with a support spring, and the outer surface of the pressing block is fixedly connected with a sealing ring.

2. The grouting anti-pollution device for shield tunneling through surface karst caves according to claim 1, wherein: The insertion tube and the connection bin are connected through a passage, the insertion tube is inserted into the karst cave grouting, and the air delivery tube is connected with the insertion tube through the air injection tube through a passage.

3. A grouting anti-pollution device for a shield tunneling through a surface karst cave in a karst area according to claim 1, characterized in that: The support rods are distributed in three groups on the outer surface of the connection bin, the adjusting rod is correspondingly connected with the support rod, the pressing disc is in a disc shape, and the pressing rods are symmetrically distributed in two groups on both sides of the pressing disc.

4. A grouting anti-pollution device for shield tunneling through surface karst caves in a karst area according to claim 1, characterized in that: The pressing block is rotatably connected with the air injection tube through the movable groove, the outer surface of the pressing block is in an arc shape, and the pressing block is elastically rotatably connected with the movable groove through the support spring.

5. The grouting anti-pollution device for surface karst caves when a shield tunneling machine passes through a karst area according to claim 1, wherein: The pressing blocks are uniformly distributed on the outer surface of the air injection tube, both ends of the support spring are fixedly connected to the surfaces of the pressing block and the air injection tube, the sealing ring is made of rubber, and the sealing ring is sleeved on the outer surface of the air injection tube through the pressing block.

6. A grouting anti-pollution device for shield tunneling through surface karst caves according to claim 1, characterized in that: The upper surface of the connection bin is fixedly connected with a fixing block, the surface of the fixing block is fixedly connected with a connecting cylinder, the surface of the connecting cylinder is threadedly connected with a screw rod, the surface of the screw rod is fixedly connected with a support block, a restraint belt is arranged on the surface of the support block, a slot is penetrated on the surface of the support block, a control rod is penetrated and connected to the outer side surface of the support block, and a pressing plate is movably connected to the surface of the control rod.

7. The grouting anti-pollution device for shield tunneling through surface karst caves according to claim 6, characterized in that: The support block acts on the upper position of the connection bin through the screw rod and the connecting cylinder, one end of the restraint belt is fixedly connected with the support block, the other end of the restraint belt penetrates through the surface of the support block through the slot, and the pressing plate is in abutting contact with the restraint belt through the control rod.