A shield tunnel underwater blasting mud guide control recovery device and method
By using end caps, dense steel wire mesh and mud collection device in underwater shield tunnel blasting, the problem of mud splashing in medium and high-pressure gas in underwater blasting is solved, safe control and material recovery are achieved, suitable for water The environment is simple in structure and low in cost.
Patent Information
- Application Number
- CN202010433972.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-05-21
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2040-05-21
AI Technical Summary
During the blasting of underwater shield tunnels, high-pressure gas drives the splash of mud and sealing substances. The traditional sealing method is available on the ground but cannot be applied in the water environment, resulting in safety hazards.
A device including end cap, dense steel wire mesh and mud collection floating row was designed. The blasting tube was fixed through casing and ring buckles. The dense steel wire mesh was used to filter high-pressure gas and mud, and collected it into mud collection floating row. It prevents splashing and allows gas to release pressure quickly, suitable for underwater environments.
It effectively prevents the splash of mud and sealing substances from being sprinkled, realizes safe control during underwater blasting, and can recover the sprayed mud and sealing substances. It is suitable for use in water environments, with a simple structure, convenient installation and low cost.
Smart Images
Figure CN111457809B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of shield tunneling, and in particular to a shield tunnel underwater blasting mud guiding control recovery device and method. Background Art
[0002] Currently, the method of "ground drilling and in-hole blasting" can be used to pre-treat the boulders and bedrock in the shield tunnel section. During the blasting process, since the area around the blasting site is relatively closed, most of the high-pressure gas generated by the explosion splashes through the blasting hole, thereby driving the mud in the hole to spray or gush out of the hole, splashing and even injuring people. The traditional solution is to first seal the blasting hole before blasting, and then use sandbags to press the top of the blasting hole to prevent the high-pressure gas from driving the mud and the sealing material in the hole to spray out. However, the covering method is available on the ground, but not on the water surface. Therefore, the solution to this problem needs to be reconsidered for the blasting of underwater tunnel rock. Summary of the invention
[0003] In view of the deficiencies in the prior art, the present invention aims to provide a shield tunnel underwater blasting mud guidance control recovery device and method.
[0004] In order to achieve the above object, the present invention adopts the following technical solution:
[0005] A shield tunnel underwater blasting mud guiding control recovery device comprises an end cover, a dense mesh and a mud collecting float; the end cover comprises a top cover and a ring buckle, the top cover and the ring buckle are connected by a sleeve, the inner diameter of the sleeve is larger than the outer diameter of the blasting tube, and the ring buckle is used to be buckled and fixed with the blasting tube; the dense mesh cover covers the top of the blasting tube, and its mesh mouth is fixed with the ring buckle; the mud collecting float has a through hole in the center, the aperture of the through hole is larger than the outer diameter of the blasting tube, and the mud collecting float passes through the blasting tube through the through hole and is laid flat on the water surface.
[0006] Furthermore, the sleeve is mainly composed of a plurality of connecting columns, and the connecting columns are arranged in a ring shape with gaps between them.
[0007] Furthermore, the top cover is arranged at an angle.
[0008] Furthermore, the inclination angle of the top cover is 45°.
[0009] Furthermore, draw ropes are provided on both sides of the periphery of the mud collecting floating row.
[0010] Furthermore, the mud collecting floating row is made of canvas material.
[0011] The present invention also provides a method for utilizing the above-mentioned shield tunnel underwater blasting mud guide control recovery device, the specific process is as follows:
[0012] After the blasting tube is installed, the mud collecting float is inflated, and then the blasting tube is passed through the through hole of the mud collecting float, and the mud collecting float is laid flat on the water surface; the casing is inserted into the upper end of the blasting tube, and the ring buckle is fastened to the blasting tube; thereafter, a dense mesh steel wire mesh cover is covered on the top of the blasting tube, and the mesh opening of the blasting tube is fixed on the ring buckle;
[0013] During the blasting process, the mud and blasting plugging objects brought out by the high-pressure gas are hit on the top cover through the casing, and the gas dissipates from the gap of the casing to release the pressure. The mud and plugging objects are also released after hitting the top cover, and at the same time rebound and fall into the dense-pore steel wire mesh. The dense-pore steel wire mesh blocks the mud and plugging objects to prevent them from splashing and injuring people. The mud is filtered by the dense-pore steel wire mesh and falls onto the mud collection float.
[0014] After the blasting is completed, the dense mesh is removed from the ring buckle, and the blasting plugging materials or debris with larger particle sizes obtained by filtering it are collected and processed; the mud collection float is taken out and the mud it receives is recovered.
[0015] The beneficial effects of the present invention are as follows: by using the present invention, not only can the high-pressure gas be prevented from driving the mud and the sealing materials in the hole to spray out and splash and injure people, but the sprayed blasting sealing materials, debris and mud can also be recovered. It is particularly suitable for use in an underwater environment, and the device has a simple structure, is easy to install, has a low cost, and can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of the shield tunnel underwater blasting mud guide control recovery device in Example 1 of the present invention;
[0017] Figure 2 for Figure 1 Schematic diagram of the specific structure of the floating row for collecting medium mud;
[0018] Figure 3 for Figure 1 Schematic diagram of the specific connection between the middle end cover, blasting tube and dense-pore steel wire mesh. DETAILED DESCRIPTION
[0019] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.
[0020] Example 1
[0021] This embodiment provides a shield tunnel underwater blasting mud guide control recovery device, such as Figure 1-3As shown, it includes an end cover 1, a dense mesh steel wire mesh 2 and a mud collection floating row 3; the end cover 1 includes a top cover 11 and a ring buckle 12, the top cover 11 and the ring buckle 12 are connected by a sleeve 13, the inner diameter of the sleeve 13 is larger than the outer diameter of the blasting tube 100, and the ring buckle 12 is used to buckle and fix with the blasting tube 100; the dense mesh steel wire mesh 2 covers the top of the blasting tube 100, and its mesh mouth is fixed with the ring buckle 12; the mud collection floating row 3 has a through hole 31 in the center, the aperture of the through hole 31 is larger than the outer diameter of the blasting tube 100, and the mud collection floating row 3 passes through the blasting tube 100 through the through hole 31 and is laid flat on the water surface 200.
[0022] Furthermore, in this embodiment, the casing 13 is mainly composed of a plurality of connecting columns 131, each connecting column 131 is arranged in a ring shape and has a gap 132 between each other. Specifically, in this embodiment, the casing 13 is composed of four connecting columns 131 arranged equidistantly. The setting of the gap can make the gas rushing out of the blasting tube during blasting dissipate from the gap, thereby achieving the effect of rapid pressure relief.
[0023] Furthermore, in this embodiment, the top cover 11 is tilted. The top cover is tilted so that the mud and the plugging material can rebound more from the bottom of the top cover or pour into the dense mesh after hitting the top cover.
[0024] Specifically, in this embodiment, the inclination angle of the top cover 11 is 45°.
[0025] Further, in this embodiment, drawstrings 32 are provided on both sides of the periphery of the mud collection floating row 3. After the blasting is finished, the mud collection floating row 3 can be lifted and retracted by the drawstrings 32, which is convenient for operation.
[0026] Specifically, in this embodiment, the mud collecting floating row 3 is made of canvas material.
[0027] The specific area of the mud collection floating row 3 can be determined according to the mud flushing range generated by the blasting.
[0028] Example 2
[0029] This embodiment provides a method for utilizing the shield tunnel underwater blasting mud guide control recovery device as described in Embodiment 1, and the specific process is as follows:
[0030] After the blasting tube 100 is installed, the mud collecting floating row 3 is inflated, and then the blasting tube 100 is passed through the through hole 31 of the mud collecting floating row 3, and the mud collecting floating row 3 is laid flat on the water surface; the casing 13 is inserted into the upper end of the blasting tube 100, and the ring buckle 12 is buckled and fixed on the blasting tube 100; thereafter, the dense mesh steel wire mesh 2 is covered on the top of the blasting tube 100, and the mesh opening of the blasting tube 100 is fixed on the ring buckle 12;
[0031] During the blasting process, the mud and blasting plugging objects brought out by the high-pressure gas hit the top cover 11 through the casing 13, and the gas dissipates and releases pressure from the gap 132 of the casing 13. The mud and the plugging objects also release pressure after hitting the top cover 11, and at the same time rebound and fall into the dense-pore steel wire mesh 2. The dense-pore steel wire mesh 2 blocks the mud and the plugging objects to prevent them from splashing and injuring people. The mud is filtered by the dense-pore steel wire mesh 2 and falls onto the mud collection float 3.
[0032] After the blasting is completed, the dense mesh 2 is removed from the ring buckle, and the blasting plugging materials or slag with larger particle sizes obtained by filtering it are collected and processed; the mud collection float 3 is taken out and the mud it receives is recovered.
[0033] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the present invention.
Claims
1. A shield tunnel underwater blasting mud guidance control recovery device, It is characterized in that The invention comprises an end cover (1), a dense mesh steel wire mesh (2) and a mud collecting floating row (3); the end cover (1) comprises a top cover (11) and a ring buckle (12); the top cover (11) and the ring buckle (12) are connected via a sleeve (13); the inner diameter of the sleeve (13) is larger than the outer diameter of the blasting tube (100); the ring buckle (12) is used for buckling and fixing with the blasting tube (100); the dense mesh steel wire mesh (2) covers the top of the blasting tube (100); the mesh opening of the dense mesh steel wire mesh (2) is fixed with the ring buckle (12); the mud collecting floating row (3) has a through hole (31) at the center; the aperture of the through hole (31) is larger than the outer diameter of the blasting tube (100); the mud collecting floating row (3) passes through the blasting tube (100) through the through hole (31) and is laid flat on the water surface (200).
2. The shield tunnel underwater blasting mud guidance control recovery device according to claim 1, It is characterized in that The sleeve (13) is mainly composed of a plurality of connecting columns (131), and the connecting columns (131) are arranged in a ring shape and have gaps (132) between them.
3. The shield tunnel underwater blasting mud guidance control recovery device according to claim 1, It is characterized in that The top cover (11) is arranged tilted.
4. The shield tunnel underwater blasting mud guidance control recovery device according to claim 3, It is characterized in that The inclination angle of the top cover (11) is 45°.
5. The shield tunnel underwater blasting mud guidance control recovery device according to claim 1, It is characterized in that Draw ropes (32) are provided on both sides of the periphery of the mud collection floating row (3).
6. The shield tunnel underwater blasting mud guidance control recovery device according to claim 1, It is characterized in that The mud collecting floating row (3) is made of canvas material.
7. A method for utilizing the shield tunnel underwater blasting mud guidance control recovery device according to claim 2, It is characterized in that The specific process is: After the blasting tube (100) is installed, the mud collecting float (3) is inflated, and then the blasting tube (100) is passed through the through hole (31) of the mud collecting float (3), and the mud collecting float (3) is laid flat on the water surface; the casing (13) is inserted into the upper end of the blasting tube (100), and the ring buckle (12) is buckled and fixed on the blasting tube (100); thereafter, the dense mesh steel wire mesh (2) is covered on the top of the blasting tube (100), and the mesh opening of the dense mesh steel wire mesh (2) is fixed on the ring buckle (12); During the blasting process, the mud and blasting plugging objects brought out by the high-pressure gas are hit onto the top cover (11) through the casing (13), and the gas dissipates and releases pressure from the gap (132) of the casing (13). After the mud and the plugging objects hit the top cover (11), they also release pressure and rebound into the dense-pore steel wire mesh (2). The dense-pore steel wire mesh (2) blocks the mud and the plugging objects to prevent them from splashing and injuring people. The mud is filtered by the dense-pore steel wire mesh (2) and then falls onto the mud collection float (3). After the blasting is completed, the dense mesh wire mesh (2) is removed from the ring buckle, and the blasting plugging materials or slag with larger particle sizes obtained by filtering it are collected and processed; the mud collection float (3) is taken out and the mud received by it is recovered.