Advanced geological detection device for tunnel construction

Abstract

The invention relates to the technical field of shield construction, and particularly discloses a tunnel construction advanced geological detection device which comprises a drilling part, a coordination part and a driving part, the drilling part comprises a base tube, a plurality of sliding rods are slidably connected in the inner wall of the base tube, one ends of the sliding rods are jointly and fixedly connected with a drill bit, and the other ends of the sliding rods are jointly and fixedly connected with a rebound device; the springback device is fixed with the base tube, one end of the base tube is provided with an insertion hole, and one end of the drill bit is provided with a detection part; the coordinating part is mounted at one end of the driving part and comprises a mounting barrel, and one end of the mounting barrel is rotationally connected with the rotating plate. The shield tunneling machine has the beneficial effects that in the tunneling process of the shield tunneling machine, the drilling part does not need to be taken out and is always located in the detection hole in front of the shield tunneling machine, the geology in front of the shield tunneling machine can be detected, normal tunneling of the shield tunneling machine cannot be affected, a drilling device and a detection device do not need to be repeatedly installed, continuous construction operation is achieved to a certain degree, and the construction efficiency is improved. The construction time is greatly saved, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shield construction, in particular to an advanced geological detection device for tunnel construction. Background Art

[0002] Advance detection in shield construction is a key technology to ensure construction safety and prevent geological disasters. It is mainly used to identify obstacles, unfavorable geological bodies (such as caves, faults, weak interlayers, etc.) or underground facilities (such as pipelines, existing tunnels) ahead of excavation. In the existing technology, for advance detection, a through hole is set at the center of the shield cutter head, and then before the shield excavation, a drilling device is used to drill a detection hole at the tunnel face from the through hole, and then the drilling device is removed, and then the detection rod with the detection radar is extended into the detection hole for detection. For large-diameter shield pipes, it is necessary to drill multiple detection holes in the tunnel face. Each time the drilling device is removed and installed, and the detection rod with the detection radar needs to be extended into the detection hole multiple times, which results in a relatively slow detection process. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a tunnel construction advance geological detection device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A tunnel construction advance geological exploration device includes a drilling unit, a coordination unit, and a driving unit, wherein:

[0006] The drilling unit includes a base pipe, a plurality of sliding rods are slidably connected to the inner wall of the base pipe, one end of the plurality of sliding rods is fixedly connected to the drill bit, and the other end of the plurality of sliding rods is fixedly connected to the rebound device, which is fixed to the base pipe. A socket is provided at one end of the base pipe, and a detection component is installed at one end of the drill bit.

[0007] The coordination part is installed at one end of the driving part, and the coordination part includes a mounting barrel. One end of the mounting barrel is rotatably connected to the rotating plate, and one side of the rotating plate is fixedly connected to the plug rod. The plug rod and the socket are arranged in a one-to-one correspondence and can be plugged in and matched. A power device is installed in the mounting barrel, and the power device is used to drive the rotating plate to rotate.

[0008] Preferably, the rebound device includes a first circular ring and a second circular ring, a first spring is fixedly connected between the first circular ring and the second circular ring, the first circular ring is fixed to the inner wall of the base tube, and the second circular ring is fixedly connected to all the sliding rods.

[0009] Preferably, a central tube is provided at one end of the drill bit, and a plurality of water spray holes are provided on the drill bit, and the water spray holes are all connected to the central tube. A water supply pipe is provided at the center of the mounting barrel, and the water supply pipe passes through the rotating plate.

[0010] Preferably, a conical joint is provided at one end of the water supply pipe, and the conical joint can be plugged into and fitted with the central pipe.

[0011] Preferably, a sliding hole is provided on the outer wall of the base tube, the sliding hole is connected to the insertion hole, a support rod is slidably connected in the sliding hole, one end of the support rod is fixedly connected to the support plate, a second spring is fixedly connected between the bottom of the sliding hole and the support rod, and a conical hole is provided on one side of the support rod, and the conical hole is arranged corresponding to the insertion hole.

[0012] Beneficial effects of the present invention: The tunnel construction advanced geological detection device provided by the present invention does not need to be taken out during the shield machine excavation process. The drilling part is always in the detection hole in front of the shield machine, which can detect the geology in front of the shield machine without affecting the normal excavation of the shield machine. There is no need to repeatedly install the drilling device and the detection device, which realizes continuous construction operations to a certain extent, greatly saves construction time and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a basic structural diagram of a tunnel construction advance geological detection device provided by the present invention;

[0014] Figure 2 yes Figure 1 Working status diagram;

[0015] Figure 3 yes Figure 1 sectional view of

[0016] Figure 4 yes Figure 3 A magnified view of point A;

[0017] Figure 5 yes Figure 4 The enlarged view at point N;

[0018] Figure 6 yes Figure 2 sectional view of

[0019] Figure 7 It is a diagram of the use of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] like Figure 1-Figure 7 As shown, a tunnel construction advance geological detection device of this embodiment includes a drilling part 1, a coordination part 3 and a driving part 2.

[0022] The drilling unit 1 includes a base pipe 11 , a plurality of slide bars 12 are slidably connected to the inner wall of the base pipe 11 , and one end of the plurality of slide bars 12 is fixedly connected to a drill bit 13 . The drill bit 13 is a flat rotary drill bit, and the outer diameter of the drill bit 13 is larger than the outer diameter of the base pipe 11 .

[0023] The other ends of multiple sliding rods 12 are commonly fixedly connected to the rebound device, which is fixed to the base tube 11. The rebound device includes a first ring 16 and a second ring 17. A first spring 18 is fixedly connected between the first ring 16 and the second ring 17. The first ring 16 is fixed to the inner wall of the base tube 11, and the second ring 17 is fixedly connected to all the sliding rods 12.

[0024] The end of the drill bit 13 facing the base pipe 11 is equipped with a detection component 14. The detection component 14 includes a mounting plate on which is mounted a detection radar with wireless signal function. The detection radar's detection method is a matter of prior art and will not be described in detail here. The detection component 14 can extend into the base pipe 11.

[0025] The coordinating unit 3 is mounted on one end of the drive unit 2, which utilizes a hydraulic cylinder mounted inside the shield. The coordinating unit 3 comprises a mounting barrel 31, with a rotating plate 32 pivotally connected to its opening at one end. A plug rod 33 is fixedly connected to one side of the rotating plate 32. A socket 19 is provided at one end of the base tube 11, with the plug rod 33 corresponding to and capable of plugging into the socket 19. The mounting barrel 31 houses a power unit that drives the rotating plate 32. The power unit comprises a motor 35 fixed to the inner wall of the mounting barrel 31. A gear 36 is fixedly connected to the main shaft of the motor 35. A gear ring 34 is fixedly connected to one side of the rotating plate 32, with the gear 36 meshing with the gear ring 34.

[0026] A central tube 15 is provided at one end of the drill bit 13. The drill bit 13 is provided with a plurality of water spray holes 131, all of which are connected to the central tube 15. A water supply pipe 8 is provided at the center of the mounting barrel 31 and extends through the rotating plate 32. A tapered connector 81 is provided at one end of the water supply pipe 8, which is adapted to engage with the central tube 15.

[0027] The method for performing advance detection using the above-mentioned tunnel construction advance geological detection device is as follows:

[0028] S1. Drilling a corresponding initial detection hole 300 on the tunnel face 200;

[0029] S2. The drilling unit 1 is passed through the cutter head groove of the shield machine 100 and inserted into the initial detection hole;

[0030] S3, the coordinating part 3 is pushed forward by the driving part 2, and the coordinating part 3 is connected to the drilling part 1. During this process, the rotating plate 32 moves forward and contacts the base pipe 11. At this time, the insertion rods 33 are inserted into the insertion holes 19 one by one, and the coordinating part 3 is continuously pushed forward. The rotating plate 32 squeezes the base pipe 11, so that the base pipe 11 moves forward and contacts the drill bit 13. At this time, the detection component 14 is located in the base pipe 11. The rotating plate 32 is driven to rotate by the power device. Under the action of the insertion rod 33, the drilling part 1 is rotated, thereby making the drill bit 13 The drilling unit 1 drills forward as a whole. After drilling a certain distance, the driving unit 2 pulls the coordination unit 3 back into the back space of the shield machine. At this time, the drill bit 13 contacts the bottom of the detection hole. Under the action of the first spring 18, the base pipe 11 will retreat. After the base pipe 11 retreats, the detection component 14 is exposed to the outside. During the detection process, the detection signal will not be shielded by the base pipe 11, which facilitates the detection component 14 to detect the surrounding geology. When the drilling unit 1 drills forward, the detection component 14 is retracted into the base pipe 11 for protection, and the detection component 14 is damaged during the drilling process. After the coordination part 3 leaves the drilling part 1, in order to prevent the tail of the base pipe 11 from tilting, a sliding hole 110 is provided on the outer wall of the base pipe 11, and the sliding hole 110 is connected to the insertion hole 19. The support rod 91 is slidably connected in the sliding hole 110, and one end of the support rod 91 is fixedly connected to the support plate 92. A second spring 93 is fixedly connected between the bottom of the sliding hole 110 and the support rod 91. A tapered hole 94 is provided on one side of the support rod 91, and the tapered hole 94 is arranged corresponding to the insertion hole 19. During the drilling process, when the insertion rod 33 is inserted into the insertion hole 19, the insertion rod 33 is also inserted into the tapered hole 94, so that the support rod 91 retracts into the sliding hole 110. When the drilling is completed and the coordination part 3 leaves the drilling part 1, the insertion rod 33 moves outward under the action of the second spring 93, thereby supporting the base pipe 11 through the support plate 92 to prevent the base pipe 11 from deflecting. At the same time, during the drilling process, water is injected into the central tube 15 through the water supply pipe 8 and sprayed out from the water spray hole 131, which makes the geology moist and facilitates the drilling of the drilling unit 1. In this way, after the detection is completed, there is a certain excavation distance between the tail of the drilling unit 1 and the cutter head of the shield machine 100, and the shield machine 100 can now excavate forward by this distance. After the shield machine stops excavating, the drive unit 2 pushes the coordination unit 3 forward, so that the drilling unit 1 drills forward a certain distance. This is repeated. During the excavation of the shield machine, the drilling unit 1 does not need to be taken out again. It is always in the detection hole in front of the shield machine, and can detect the geology in front of the shield machine without affecting the normal excavation of the shield machine. Compared with the existing technology, there is no need to repeatedly install the drilling device and the detection device, which realizes continuous construction operations to a certain extent, greatly saves construction time, and improves construction efficiency.

Claims

1. A device for advanced geological exploration in tunnel construction, characterized by: It comprises a drilling unit (1), a coordination unit (3) and a driving unit (2), wherein: The drilling part (1) includes a base pipe (11), a plurality of sliding rods (12) are slidably connected in the inner wall of the base pipe (11), one end of the plurality of sliding rods (12) is fixedly connected to a drill bit (13), the other end of the plurality of sliding rods (12) is fixedly connected to a rebound device, the rebound device is fixed to the base pipe (11), one end of the base pipe (11) is provided with a socket (19), and one end of the drill bit (13) is equipped with a detection component (14); The coordination part (3) is mounted on one end of the driving part (2). The coordination part (3) comprises a mounting barrel (31). One end of the mounting barrel (31) is rotatably connected to a rotating plate (32). One side of the rotating plate (32) is fixedly connected to an insertion rod (33). The insertion rod (33) is arranged in a one-to-one correspondence with the insertion hole (19) and can be plugged in and matched. A power device is installed in the mounting barrel (31), and the power device is used to drive the rotating plate (32) to rotate.

2. The device for advanced geological exploration for tunnel construction according to claim 1, characterized in that: The rebound device comprises a first circular ring (16) and a second circular ring (17), a first spring (18) is fixedly connected between the first circular ring (16) and the second circular ring (17), the first circular ring (16) is fixed to the inner wall of the base tube (11), and the second circular ring (17) is fixedly connected to all the sliding rods (12).

3. The device for advanced geological exploration for tunnel construction according to claim 1, characterized in that: A central tube (15) is provided at one end of the drill bit (13), and a plurality of water spray holes (131) are provided on the drill bit (13), and the water spray holes (131) are all connected to the central tube (15). A water supply pipe (8) is provided at the center of the mounting barrel (31), and the water supply pipe (8) passes through the rotating plate (32).

4. The device for advanced geological exploration for tunnel construction according to claim 3, characterized in that: One end of the water supply pipe (8) is provided with a tapered joint (81), and the tapered joint (81) can be plugged into and matched with the central pipe (15).

5. The device for advanced geological exploration for tunnel construction according to claim 1, characterized in that: A sliding hole (110) is provided on the outer wall of the base tube (11), the sliding hole (110) is communicated with the insertion hole (19), a support rod (91) is slidably connected in the sliding hole (110), one end of the support rod (91) is fixedly connected to the support plate (92), a second spring (93) is fixedly connected between the bottom of the sliding hole (110) and the support rod (91), a tapered hole (94) is provided on one side of the support rod (91), and the tapered hole (94) is arranged corresponding to the insertion hole (19).

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