A cave surveying and detecting device for strong water-rich karst development areas

Abstract

The application discloses a cave surveying and detecting device for strong water-rich karst development areas, which comprises a mobile vehicle, a lifting platform arranged on the mobile vehicle, a cylindrical body rotationally connected to the middle part of the lifting platform, a cutting edge arranged at the lower end of the cylindrical body, a plurality of guide vertical pipes arranged in an annular array in the cylindrical body, a horizontal pipe arranged at one end of each guide vertical pipe, an arc-shaped pipe arranged between the guide vertical pipe and the horizontal pipe, and a plurality of measuring rods penetrating through the guide vertical pipe, the arc-shaped pipe and the horizontal pipe. The plurality of square rods can be sequentially inserted into the guide vertical pipe, transported along the guide vertical pipe, the arc-shaped pipe and the horizontal pipe, and kept in a horizontal state by extending out of the horizontal pipe. The outermost square rod is blocked by the inner wall of the cave, so that the boundary range of the cave below can be calculated according to the extending distance, the boundary of the cave is marked on the ground, and it is convenient to select whether to excavate or to carry out multi-point drilling and grouting reinforcement within the boundary range, thereby facilitating the making of a subsequent construction scheme.

Description

Technical Field

[0001] This invention relates to the field of karst cave detection technology, and in particular to a karst cave exploration and detection device for areas with strong water-rich karst development. Background Technology

[0002] Karst caves are one of the most common karst formations encountered during tunnel construction in karst regions. Hidden karst caves along the tunnel route are a major source of hazard risks during tunnel construction. In coastal areas with abundant and shallow groundwater, karst caves at the tunnel roof are more likely to cause collapse and cracking, while those at the tunnel floor can lead to uneven settlement and subsidence. Karst caves at the tunnel shoulders can affect tunnel deformation and damage the tunnel lining and support. Therefore, detecting karst caves along the tunnel route is a crucial step in the advanced forecasting of tunnel construction.

[0003] At present, the technology for advanced prediction of karst caves and tunnels is gradually being developed and applied. Advanced prediction technology can locate karst caves to a certain extent and predict the type of karst cave. However, after the karst cave is discovered, the internal conditions of the karst cave are rarely explored, such as the approximate boundary range of the karst cave. Therefore, it is not convenient to choose which measure to use for treatment, such as excavation, filling or grouting, based on the structure of the karst cave. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a karst cave exploration and detection device for areas with strong water-rich karst development, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for exploring and detecting karst caves in areas with abundant water includes a mobile vehicle with a lifting platform. A cylinder is rotatably connected to the middle of the lifting platform. A cutting edge is provided at the lower end of the cylinder. Multiple guide tubes are arranged in a ring array inside the cylinder. A horizontal tube is provided at one end of each guide tube. An arc-shaped tube is provided between the guide tubes and the horizontal tubes. Multiple measuring rods are inserted into the guide tubes, the arc-shaped tubes, and the horizontal tubes.

[0007] Preferably, the mobile vehicle includes a frame, a through groove is provided in the middle of the frame, a guide column is fixedly connected to one end of the upper side of the frame, a lifting cylinder is fixedly connected to the upper side of the lifting platform, and the telescopic rod of the lifting cylinder is fixedly connected to the frame.

[0008] Preferably, an external gear ring is provided at the upper end of the cylinder, a drive motor is fixedly connected to the bottom of the lifting platform, a drive gear is fixedly connected to the main shaft of the drive motor, and the drive gear meshes with the external gear ring.

[0009] Preferably, the multi-section measuring rod includes multiple square rods hinged on one side, with a hinge groove at one corner of one end of each square rod, and a hinge plate fixedly connected to the other end of each square rod, the hinge plate extending into the hinge groove and hinged.

[0010] Preferably, the guide vertical tube is rotatably connected to the cylinder, and a fan-shaped groove is provided on the outer side of the lower end of the cylinder for the rotational avoidance of the arc-shaped tube and the horizontal tube. The upper side of the guide vertical tube is fixedly connected to the column, and the upper end of the column is fixedly connected to the support plate. The end of the support plate is rotatably connected to the guide wheel, and the side wall of the square rod at the uppermost end is fixedly connected to the marking rope.

[0011] Preferably, a guide groove is provided on the upper side of the support plate, and a marker block is fixedly connected to the end of the marker rope, with the marker block slidably connected to the guide groove.

[0012] The advantages of this invention are as follows: The karst cave exploration and detection device provided by this invention is moved by a mobile vehicle to the karst cave location initially determined by ground-penetrating radar. Then, the drive gear of the drive motor drives the cylinder to rotate, and the lifting platform descends to drill the cylinder into the karst cave. Subsequently, it connects to the square rod at the top of the guide vertical pipe. By inserting multiple square rods into the guide vertical pipe in sequence, the multiple square rods can be transported along the guide vertical pipe, the arc pipe, and the horizontal pipe, and extend out of the horizontal pipe and remain horizontal. The outermost square rod is blocked when it encounters the inner wall of the karst cave. Therefore, the boundary range of the karst cave can be calculated by the distance of the extension. It is convenient to mark the boundary of the karst cave on the ground, which makes it easier to choose between excavation or multi-point drilling and grouting reinforcement within the boundary range, thus facilitating the formulation of subsequent construction plans.

[0013] This invention involves rotating the guide riser in either the forward or reverse direction and tentatively extending it further. If it can be extended further at a certain angle, that position is selected as the final far-end control point. This allows the multi-section measuring rods input from multiple guide risers to obtain more detailed data at the front end. When the multi-section measuring rods are inserted into the guide riser, the marker blocks at the end of the marking rope are pulled and slide within the guide groove. The line formed by multiple marker blocks becomes a graphic that visually displays the boundary range of the karst cave above the ground, thus facilitating the specification of subsequent construction plans. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the basic structure of the present invention;

[0015] Figure 2 yes Figure 1 Enlarged view of section M in the image;

[0016] Figure 3 yes Figure 1 Enlarged view of N points in the image;

[0017] Figure 4This is a schematic diagram of the ground-level layout outline of the present invention;

[0018] Figure 5 This is a simplified schematic diagram illustrating the principle of lofting contour in this invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the 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 merely illustrative and not intended to limit the invention.

[0020] Example 1

[0021] like Figure 1-5 As shown, the present invention provides a karst cave exploration and detection device for areas with strong water-rich karst development, including a mobile vehicle 1, a lifting platform 2 on the mobile vehicle 1, a frame 11, a through groove 12 in the middle of the frame 11, a guide column 13 fixedly connected to one end of the upper side of the frame 11, a lifting cylinder 14 fixedly connected to the upper side of the lifting platform 2, the telescopic rod of the lifting cylinder 14 fixedly connected to the frame 11 to control the lifting and lowering of the lifting platform 2, a cylinder 3 rotatably connected to the middle of the lifting platform 2, an external toothed ring 31 on the upper end of the cylinder 3, a drive motor 32 fixedly connected to the bottom of the lifting platform 2, a drive gear 33 fixedly connected to the main shaft of the drive motor 32, the drive gear 33 meshing with the external toothed ring 31, a cutting edge 4 on the lower end of the cylinder 3, multiple guide vertical tubes 5 arranged in a ring array inside the cylinder 3, a horizontal tube 6 on one end of each guide vertical tube 5, an arc-shaped tube 7 between the guide vertical tube 5 and the horizontal tube 6, and multiple measuring rods 8 passing through the guide vertical tube 5, the arc-shaped tube 7 and the horizontal tube 6.

[0022] The multi-section measuring rod 8 includes multiple square rods 81 hinged on one side. One end of each square rod 81 has a hinge groove 82 at its corner, and the other end of each square rod 81 is fixedly connected to a hinge plate 83. The hinge plate 83 extends into the hinge groove 82 and is hinged. The square rod 81 located inside the horizontal tube 6 serves as a fulcrum. Each extended square rod 81 can only rotate around the hinge plate 83. This allows the lower sides of the connected ends of the extended square rods 81 to stick together under the action of gravity. This enables the square rods 81 to be conveyed along the guide vertical tube 5, the arc tube 7, and the horizontal tube 6 while keeping the part extending out of the horizontal tube 6 able to extend forward and remain horizontal.

[0023] In this invention, a mobile vehicle 1 is moved to the location of the karst cave initially determined by ground-penetrating radar. Then, the drive gear 33 of the drive motor 32 drives the cylinder 3 to rotate, and the lifting platform 2 descends to drill the cylinder 3 into the karst cave 10. Subsequently, it connects to the square rod 81 on the upper part of the guide vertical pipe 5. By inserting multiple square rods 81 into the guide vertical pipe 5 in sequence, the multiple square rods 81 can be transported along the guide vertical pipe 5, the arc pipe 7, and the horizontal pipe 6, and extend out of the horizontal pipe 6 and remain horizontal. The outermost square rod 81 is blocked when it encounters the inner wall of the karst cave. Thus, the boundary range of the karst cave 10 below can be calculated by the distance of the extension. It is convenient to mark the boundary of the karst cave 10 on the ground, so as to facilitate the choice of excavation or multi-point drilling and grouting reinforcement within the boundary range, thereby facilitating the formulation of subsequent construction plans.

[0024] To accommodate the rotation of the cylinder 3, the hinge pins of the hinge plate 83 at the position where the multi-section measuring rod 8 extends out of the guide vertical tube 5 are equipped with detachable retaining rings. After the retaining rings are removed, two adjacent square rods 81 can be separated. The square rods 81 outside the guide vertical tube 5 are separated first to accommodate the rotation of the cylinder 3. After the cylinder 3 is drilled to the position, the square rods 81 outside the guide vertical tube 5 are reconnected. The square rods 81 outside are pushed into the guide vertical tube 5 in sequence to accommodate the horizontal tube 6 below the guide vertical tube 5 extending outwards section by section of square rods 81.

[0025] Example 2

[0026] Because the boundary of the karst cave is irregular, the distance from the cylinder 3 as the measurement center point to the boundary of the karst cave is different, and the distance may increase when the fan-shaped angle of the measurement position point differs by 5-10°. Therefore, in this embodiment, the guide vertical pipe 5 is rotatably connected to the cylinder 3. The lower outer side of the cylinder 3 is provided with a fan-shaped groove for the rotation avoidance of the arc-shaped pipe 7 and the horizontal pipe 6. The upper side of the guide vertical pipe 5 is fixedly connected to the column 51, the upper end of the column 51 is fixedly connected to the support plate 22, the end of the support plate 22 is rotatably connected to the guide wheel 23, and the side wall of the square rod 81 at the uppermost end is fixedly connected to the marking rope 24.

[0027] A guide groove 25 is provided on the upper side of the support plate 22, and a marker block 26 is fixedly connected to the end of the marker rope 24. The marker block 26 is slidably connected to the guide groove 25, and the initial position of the marker block 26 corresponds to the protruding end of the horizontal pipe 6.

[0028] In this embodiment, the guide vertical pipe 5 and the upper support plate 22 can rotate around the guide vertical pipe 5 to change the angle. When the square rod 81 extending from the bottom horizontal pipe 6 touches the boundary of the cave 10, it can be rotated forward or backward by 5-10° and tentatively extended forward. If it can be extended further at a certain angle, the position is selected as the final far-end control point. This allows the multi-section measuring rod 8 input by multiple guide vertical pipes 5 to obtain more detailed data at the front end. When the multi-section measuring rod 8 is inserted into the guide vertical pipe 5, the marker block 26 at the end of the marker rope 24 is pulled and slides in the guide groove 25. The line 20 formed by multiple marker blocks 26 becomes a graphic that visually displays the boundary range of the cave 10 above the ground, which facilitates the specification of subsequent construction plans.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cave surveying and detecting device for strong water-rich karst development areas, comprising a mobile vehicle (1), characterized in that: The mobile vehicle (1) is provided with a lifting platform (2), the middle part of the lifting platform (2) is rotationally connected with a cylinder (3), the lower end of the cylinder (3) is provided with a cutting blade (4), a plurality of guide vertical pipes (5) are arranged in the cylinder (3) in an annular array, one end of each guide vertical pipe (5) is provided with a horizontal pipe (6), an arc-shaped pipe (7) is arranged between the guide vertical pipe (5) and the horizontal pipe (6), and a plurality of measuring rods (8) are inserted into the guide vertical pipe (5), the arc-shaped pipe (7) and the horizontal pipe (6) in common; The plurality of measuring rods (8) comprise a plurality of square rods (81) which are rotationally connected on one side, a hinge groove (82) is arranged at one end of the square rod (81), and a hinge plate (83) is fixedly connected to the other end of the square rod (81), the hinge plate (83) extends into the hinge groove (82) and is hingedly connected; The guide vertical pipe (5) is rotationally connected with the cylinder (3), the outer side of the lower end of the cylinder (3) is provided with a fan-shaped groove for rotationally avoiding the arc-shaped pipe (7) and the horizontal pipe (6), the upper side of the guide vertical pipe (5) is fixedly connected with a stand column (51), the upper end of the stand column (51) is fixedly connected with a support plate (22), the end of the support plate (22) is rotationally connected with a guide wheel (23), and the side wall of the square rod (81) located at the uppermost end is fixedly connected with a marking rope (24); The upper side of the support plate (22) is provided with a guide groove (25), the end of the marking rope (24) is fixedly connected with a marking block (26), and the marking block (26) is slidably connected with the guide groove (25).

2. The cave surveying and detecting device for a strong water-rich karst development area according to claim 1, characterized in that: The mobile vehicle (1) comprises a vehicle frame (11), the middle part of the vehicle frame (11) is provided with a through groove (12), one end of the upper side of the vehicle frame (11) is fixedly connected with a guide column (13), the upper side of the lifting platform (2) is fixedly connected with a lifting oil cylinder (14), and the telescopic rod of the lifting oil cylinder (14) is fixedly connected with the vehicle frame (11).

3. The cave surveying and detecting device for a strong water-rich karst development area according to claim 1, characterized in that: The upper end of the cylinder (3) is provided with an external gear ring (31), the bottom of the lifting platform (2) is fixedly connected with a driving motor (32), the main shaft of the driving motor (32) is fixedly connected with a driving gear (33), and the driving gear (33) is engaged with the external gear ring (31).

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