Reinforcing structure for bin opening and tool changing in upper-soft lower-hard stratum of shield tunneling machine
By using a combination of bored piles, grouting holes and dewatering well pipes in the soft and hard strata above the shield machine, the problems of high cost and long construction period of traditional cement reinforcement methods were solved, and a low-cost and efficient reinforcement effect was achieved.
Patent Information
- Application Number
- CN202422825259.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-20
AI Technical Summary
When existing shield machines change cutters in soft upper and hard lower strata, the traditional cement-based reinforcement method is costly and time-consuming, and easily causes cement slurry to contaminate the cutterhead, making it difficult to clean, and lacks an efficient and low-cost reinforcement structure.
A combination of bored piles, grouting holes, positive dewatering well pipes and side dewatering well pipes is used in conjunction with a pumping mechanism to lower the ground water level, and the ground is reinforced by injecting a mixture of cement liquid and water glass liquid to avoid contamination of the shield body.
It improves the stability and strength of the stratum, reduces construction costs and construction period, and achieves efficient and low-cost reinforcement effects.
Smart Images
Figure CN223330573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stratum reinforcement, in particular to a shield machine upper soft and lower hard stratum opening and cutter changing reinforcement structure. Background Art
[0002] Stratum reinforcement refers to the process of improving the physical and mechanical properties of natural strata (such as soil and rock) through a series of engineering and technical means to enhance their strength, stability and bearing capacity. Since the cutters of shield machines are subject to varying degrees of wear when tunneling in hard rock strata or soft upper and hard lower strata, when the surrounding rock is poor and the conditions for cutter replacement under pressure are not met, in order to ensure the stability of the stratum and prevent the occurrence of adverse phenomena such as stratum deformation and collapse, it is necessary to take effective measures to reinforce the existing stratum and then perform normal pressure excavation and cutter replacement.
[0003] The existing reinforcement methods used in shield machine scenarios often adopt cement-based reinforcement methods such as high-pressure rotary jet pile reinforcement and cement-soil mixing pile reinforcement. Although the effect is significant, the reinforcement cost is high, and the time to strengthen after reinforcement is long, which is not conducive to the construction period and cost control of shield machine. In addition, cement slurry is easily poured into the cutterhead, which is difficult to clean after opening. There is a lack of efficient reinforcement structures with short cycles and low costs in soft upper and hard lower strata, resulting in a long construction period and high costs for traditional cement-based reinforcement methods.
[0004] Therefore, those skilled in the art provide a shield machine with a soft upper and hard lower stratum opening and cutter changing reinforcement structure to solve the problems raised in the above background technology. Utility Model Content
[0005] The purpose of the utility model is to provide a shield machine with a soft upper and hard lower stratum opening and cutter changing reinforcement structure to solve the problems raised in the above background technology.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A shield machine cutter-changing reinforcement structure for soft upper and hard lower strata, comprising a stratum body, a shield machine body arranged inside the stratum body, and a high-efficiency reinforcement mechanism arranged inside the stratum body;
[0008] The high-efficiency reinforcement mechanism includes several identical bored piles, two side drainage well pipes are provided on both sides of several bored piles, two positive drainage well pipes are provided on the outside of several bored piles, and several identical grouting holes are opened on the upper surface of the stratum body. The top of each side drainage well pipe is fixedly connected to a first docking ring plate, the bottom end of each side drainage well pipe is fixedly connected to a first water filter pipe, the top of each positive drainage well pipe is fixedly connected to a second docking ring plate, and the bottom end of each positive drainage well pipe is fixedly connected to a second water filter pipe.
[0009] As a further solution of the present invention: the outer surfaces of several of the bored piles, the outer surfaces of the four side drainage well pipes and the outer surfaces of the two positive drainage well pipes are all fixedly connected to the inner wall of the stratum body, the outer surface of the shield body, the outer surface of the four first water filter pipes and the outer surface of the two second water filter pipes are all in contact with the inner wall of the stratum body, the bottom surfaces of the four first docking ring plates and the bottom surfaces of the two second docking ring plates are all in contact with the upper surface of the stratum body, and manhole covers are provided above the four first docking ring plates and above the two second docking ring plates. Four positioning columns are fixedly connected to the bottom surface of each manhole cover, wherein the bottom surfaces of the four manhole covers are in contact with the upper surface of the first docking ring plate, and the bottom surfaces of the other two manhole covers are in contact with the upper surface of the second docking ring plate, and the inner walls of the four first docking ring plates and the inner walls of the two second docking ring plates are in contact with the outer surfaces of the positioning columns.
[0010] As a further solution of the present invention: the upper surface of each manhole cover is fixedly connected to a handle support, and the inner wall of each handle support is fixedly connected to a pull rod.
[0011] As a further solution of the present invention: a grip is provided inside each of the handle supports, and the inner wall of each of the grips is rotatably connected to the outer surface of the pull rod.
[0012] As a further solution of the present invention: a protective cover plate is commonly provided above the plurality of grouting holes, a soft gasket is fixedly connected to the bottom surface of the protective cover plate, and the bottom surface of the soft gasket is in contact with the upper surface of the stratum body.
[0013] As a further solution of the present invention: the upper surface of the protective cover is fixedly connected to a handlebar, and the outer surface of the handlebar is fixedly connected to an anti-slip sleeve.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] The utility model cooperates with each other of the stratum body, the shield machine body efficient reinforcement mechanism, bored piles, grouting holes, the positive water drop well pipe, the side water drop well pipe, the second docking ring plate, the first docking ring plate, the second water filter pipe and the first water filter pipe. The bored piles can increase the vertical strength of the stratum body in the direction of the cutter head of the shield machine body. The side water drop well pipe and the first water filter pipe can cooperate with the external pumping mechanism to lower the water level on both sides of the shield machine body in the stratum body. The positive water drop well pipe and the second water filter pipe can cooperate with the external pumping mechanism to lower the water level on the cutter head side of the shield machine body in the stratum body, thereby preventing the water in the stratum body from affecting the shield machine body. The stability of the stratum above the shield body is disturbed, and the stability of the stratum above the shield body is increased. In addition, the grouting holes do not contact the shield body, and a mixture of cement liquid and water glass liquid can be injected into the grouting holes, thereby reinforcing the stratum above the shield body, and the mixture will not pollute the shield body. The construction cost of the entire efficient reinforcement mechanism is low and simple, and it can be constructed in advance, which greatly reduces the construction period and cost, and avoids the problem of long construction period and high cost of traditional cement reinforcement methods due to the lack of a short-cycle and low-cost efficient reinforcement structure in the upper soft and lower hard strata. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of a shield machine with a cutter-changing reinforcement structure for soft upper and hard lower strata.
[0017] Figure 2 A schematic diagram of the three-dimensional structure of the stratum in a shield machine with a cutter-changing reinforcement structure in soft upper and hard lower strata;
[0018] Figure 3 It is a schematic diagram of a side-view cutaway three-dimensional structure of a stratum body in a shield machine's upper soft and lower hard stratum opening and cutter-changing reinforcement structure;
[0019] Figure 4 A schematic diagram of the three-dimensional structure of a manhole cover in a shield machine's cutter-changing reinforcement structure for soft upper and hard lower strata.
[0020] Figure 5 This is a schematic diagram of the upward-looking three-dimensional structure of a manhole cover in a shield machine's opening and cutting tool replacement reinforcement structure for soft upper and hard lower strata;
[0021] Figure 6 This is a schematic diagram of the upward-looking three-dimensional structure of the protective cover plate in the opening and cutting tool changing reinforcement structure of a shield machine in soft upper and hard lower strata.
[0022] In the figure: 1. Stratum; 2. Shield machine body; 3. High-efficiency reinforcement mechanism; 301. Bored pile; 302. Grouting hole; 303. Direct drainage well pipe; 304. Side drainage well pipe; 305. Second docking ring plate; 306. First docking ring plate; 307. Second water filter pipe; 308. First water filter pipe; 4. Manhole cover; 5. Positioning column; 6. Handle support; 7. Pull rod; 8. Grip; 9. Protective cover; 10. Soft gasket; 11. Handle bar; 12. Anti-slip sleeve. DETAILED DESCRIPTION
[0023] See also Figure 1-6 A shield machine cutter-changing reinforcement structure for soft upper and hard lower strata includes a stratum body 1, a shield machine body 2 is arranged inside the stratum body 1, and a high-efficiency reinforcement mechanism 3 is arranged inside the stratum body 1. The high-efficiency reinforcement mechanism 3 includes a plurality of identical bored piles 301, two side dewatering well pipes 304 are arranged on both sides of the plurality of bored piles 301, and two positive dewatering well pipes 303 are arranged on the outside of the plurality of bored piles 301. A plurality of identical grouting holes 302 are opened on the upper surface of the stratum body 1, and a protective cover plate 9 is arranged above the plurality of grouting holes 302. A soft gasket is fixedly connected to the bottom surface of the protective cover plate 9. 10. The bottom surface of the soft gasket 10 is in contact with the upper surface of the stratum 1. By setting the protective cover plate 9, the top of the grouting hole 302 can be blocked and protected before the cement liquid and water glass liquid mixture is injected, thereby effectively protecting the integrity of the top opening of the grouting hole 302. By setting the soft gasket 10, it has good softness and can support the protective cover plate 9 to a certain height relative to the grouting hole 302, thereby avoiding the protective cover plate 9 from directly squeezing the grouting hole 302 while ensuring the protective function of the protective cover plate 9, thereby improving the protective effect of the protective cover plate 9 on the top of the grouting hole 302.
[0024] The top of each side drainage well pipe 304 is fixedly connected to a first docking ring plate 306, and the bottom end of each side drainage well pipe 304 is fixedly connected to a first water filter pipe 308. The upper surface of the protective cover plate 9 is fixedly connected to a handle bar 11, and the outer surface of the handle bar 11 is fixedly connected to an anti-slip sleeve 12. The first water filter pipe 308 can filter impurities at the bottom of the side drainage well pipe 304 and prevent impurities from entering the side drainage well pipe 304 and blocking the side drainage well pipe 304. By providing the handle bar 11, it is convenient to lift the protective cover plate 9 by hand, and then it is convenient to move the protective cover plate 9. By providing the anti-slip sleeve 12, the anti-slip property of the outer surface of the handle bar 11 can be increased.
[0025] The top of each positive drainage well pipe 303 is fixedly connected to a second docking ring plate 305. The outer surfaces of several bored piles 301, the outer surfaces of four side drainage well pipes 304 and the outer surfaces of two positive drainage well pipes 303 are fixedly connected to the inner wall of the formation body 1. The bottom surfaces of the four first docking ring plates 306 and the bottom surfaces of the two second docking ring plates 305 are in contact with the upper surface of the formation body 1. A well cover 4 is provided above the four first docking ring plates 306 and the two second docking ring plates 305. The bottom surface of each well cover 4 is fixedly connected to four positioning columns 5, wherein the bottom surfaces of the four well covers 4 are all in contact with the first pair of The upper surface of the connecting ring plate 306 is in contact with each other, and the bottom surfaces of the other two manhole covers 4 are in contact with the upper surface of the second connecting ring plate 305. The inner walls of the four first connecting ring plates 306 and the inner walls of the two second connecting ring plates 305 are in contact with the outer surface of the positioning column 5. By setting the manhole cover 4, external debris can be prevented from falling into the side precipitation well pipe 304 and the main precipitation well pipe 303 when they are not in use. By setting the positioning column 5, it can be positioned and docked with the first connecting ring plate 306 and the second connecting ring plate 305, thereby ensuring that the manhole cover 4 is more stable when covering the side precipitation well pipe 304 and the main precipitation well pipe 303.
[0026] The bottom end of each positive drainage well pipe 303 is fixedly connected to a second water filter pipe 307. The outer surface of the shield body 2, the outer surface of the four first water filter pipes 308 and the outer surface of the two second water filter pipes 307 are all in contact with the inner wall of the formation body 1. The second water filter pipe 307 can filter impurities at the bottom of the positive drainage well pipe 303 and prevent impurities from entering the positive drainage well pipe 303 and blocking the positive drainage well pipe 303. The upper surface of each manhole cover 4 is fixedly connected to a handle support 6, and the inner wall of each handle support 6 is fixedly connected to a pull rod 7. A handle 8 is provided inside each handle support 6, and the inner wall of each handle 8 is rotatably connected to the outer surface of the pull rod 7. By providing the handle 8, it can be rotated around the outer surface of the pull rod 7 inside the handle support 6, and then the manhole cover 4 can be conveniently lifted away from the first docking ring plate 306 and the second docking ring plate 305 after holding the handle 8, thereby facilitating the assembly or disassembly of the manhole cover 4.
[0027] The working principle of the present invention is as follows: according to the position of the shield machine body 2 where the cutter head needs to be changed, firstly, a positive drainage well pipe 303, a second water filter pipe 307, a second docking ring plate 305, a side drainage well pipe 304, a first water filter pipe 308 and a first docking ring plate 306 are assembled inside the stratum 1 around the shield machine body 2; then, an external water pumping mechanism is used to respectively evacuate the water around the shield machine body 2 in the stratum 1 through the positive drainage well pipe 303 and the side drainage well pipe 304; then, an external drilling mechanism is used to drill holes in the direction of the cutter head of the shield machine body 2; then, a steel cage is placed in each hole and poured, and finally a plurality of bored piles 301 are formed; then, an external small punching mechanism is used to drill holes in the positive direction of the shield machine body 2; A number of grouting holes 302 are drilled on the top, and a mixture of cement liquid and water glass liquid is introduced into each grouting hole 302 through an auxiliary pipe. When the mixture of cement liquid and water glass liquid in the grouting hole 302 solidifies, the stratum body 1 around the shield body 2 can be reinforced and the overall strength of this part of the stratum body 1 can be increased. The construction cost of the entire high-efficiency reinforcement mechanism 3 is low and simple, and it can be constructed in advance, which greatly reduces the construction time and cost. The design of the upper soft and lower hard stratum opening and cutting reinforcement structure of the entire shield machine effectively solves the problem of long construction period and high cost of traditional cement reinforcement methods due to the lack of a short-cycle and low-cost high-efficiency reinforcement structure in the upper soft and lower hard strata.
[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A shield machine cutter-changing reinforcement structure for soft upper and hard lower strata, comprising a stratum body (1), characterized in that: A shield machine body (2) is provided inside the stratum body (1), and a high-efficiency reinforcement mechanism (3) is provided inside the stratum body (1); The high-efficiency reinforcement mechanism (3) comprises a plurality of identical bored piles (301), two side drainage well pipes (304) are provided on both sides of the plurality of bored piles (301), two positive drainage well pipes (303) are provided on the outside of the plurality of bored piles (301), a plurality of identical grouting holes (302) are opened on the upper surface of the stratum body (1), the top end of each of the side drainage well pipes (304) is fixedly connected to a first docking ring plate (306), the bottom end of each of the side drainage well pipes (304) is fixedly connected to a first water filter pipe (308), the top end of each of the positive drainage well pipes (303) is fixedly connected to a second docking ring plate (305), and the bottom end of each of the positive drainage well pipes (303) is fixedly connected to a second water filter pipe (307).
2. A shield machine cutter-changing reinforcement structure for upper soft and lower hard strata according to claim 1, characterized in that: The outer surfaces of the bored piles (301), the outer surfaces of the four side drainage well pipes (304) and the outer surfaces of the two front drainage well pipes (303) are all fixedly connected to the inner wall of the stratum (1); the outer surface of the shield machine (2), the outer surfaces of the four first water filter pipes (308) and the outer surfaces of the two second water filter pipes (307) are all in contact with the inner wall of the stratum (1); the bottom surfaces of the four first docking ring plates (306) and the bottom surfaces of the two second docking ring plates (305) are all in contact with the upper surface of the stratum (1); the four A manhole cover (4) is provided above the first docking ring plate (306) and above the two second docking ring plates (305), and the bottom surface of each manhole cover (4) is fixedly connected to four positioning columns (5), wherein the bottom surfaces of the four manhole covers (4) are in contact with the upper surface of the first docking ring plate (306), and the bottom surfaces of the other two manhole covers (4) are in contact with the upper surface of the second docking ring plate (305), and the inner walls of the four first docking ring plates (306) and the inner walls of the two second docking ring plates (305) are in contact with the outer surfaces of the positioning columns (5).
3. The shield machine cutter-changing reinforcement structure for upper soft and lower hard strata according to claim 2, characterized in that: The upper surface of each manhole cover (4) is fixedly connected to a handle support (6), and the inner wall of each handle support (6) is fixedly connected to a pull rod (7).
4. The shield machine cutter-changing reinforcement structure for upper soft and lower hard strata according to claim 3, characterized in that: A grip (8) is provided inside each of the handle supports (6), and the inner wall of each of the grips (8) is rotatably connected to the outer surface of the pull rod (7).
5. The shield machine cutter-changing reinforcement structure for upper soft and lower hard strata according to claim 1, characterized in that: A protective cover plate (9) is commonly provided above the plurality of grouting holes (302), the bottom surface of the protective cover plate (9) is fixedly connected to a soft gasket (10), and the bottom surface of the soft gasket (10) is in contact with the upper surface of the stratum body (1).
6. The shield machine cutter-changing reinforcement structure for upper soft and lower hard strata according to claim 5, characterized in that: The upper surface of the protective cover plate (9) is fixedly connected to a handlebar (11), and the outer surface of the handlebar (11) is fixedly connected to an anti-slip sleeve (12).