Geological disaster investigation rock crack measuring device and measuring method

Abstract

The invention discloses a geological disaster investigation rock crack measuring device and method, and belongs to the technical field of geological disaster investigation, the geological disaster investigation rock crack measuring device comprises a hand-held seat and further comprises a detection rod, the detection rod is in sliding connection with the hand-held seat, the end of the detection rod is provided with an ejector rod, and the ejector rod is connected with the hand-held seat; a measuring component is arranged at one end of the ejector rod away from the gauge rod; the impurity removal assembly is arranged on the ejector rod and is used for cleaning broken stones in the rock cracks; wherein the measuring assembly comprises a distance measuring part arranged at the end part of the detection rod, a camera and a GPS positioning module used for monitoring the position of the distance measuring part, and the distance measuring part and the GPS positioning module are both connected with the background detection terminal; the detection rod is arranged to be composed of the multiple movable rods which are elastically and rotationally connected, the detection rod can be conveniently matched with the measuring assembly to measure the gap widths of different positions of the rock crack depth, and the accuracy of rock crack measurement data is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological disaster investigation, and in particular to a rock crack measuring device and a measuring method for geological disaster investigation. Background Art

[0002] Geological disasters refer to geological actions or phenomena formed under the influence of natural or human factors, which cause losses to human life and property and damage to the environment. The distribution and change patterns of geological disasters in time and space are both subject to the natural environment and related to human activities. They are often the result of the interaction between humans and nature. When measuring cracks caused by geological disasters, crack measuring devices can be used for measurement.

[0003] Existing crack measuring instruments generally only measure the width of the outermost part of the crack or the depth of the crack. However, when geological disasters occur, the cracks produced in the rock are generally large, and the internal crack conditions need to be detected. Existing instruments cannot measure the width of the cracks at different positions inside the rock cracks, and the inside of the rock cracks is uneven, resulting in poor accuracy of the measurement data. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a rock crack measuring device and a measuring method for geological disaster investigation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A rock crack measuring device for geological disaster investigation, comprising a handheld seat and: A detection rod, the detection rod is slidably connected to the hand-held seat, a push rod is arranged at the end of the detection rod, and a measuring assembly is arranged at one end of the push rod away from the detection rod; and A debris removal component, which is arranged on the top rod and is used to clean up the debris in the rock cracks; The measuring assembly includes a distance measuring part arranged at the end of the detection rod, a camera and a GPS positioning module for monitoring the position of the distance measuring part. Both the distance measuring part and the GPS positioning module are connected to the background detection terminal.

[0006] Preferably, the detection rod includes a plurality of rotatably connected movable rods, a first rotating shaft is arranged between two adjacent movable rods, a first torsion spring for driving the movable rod to reset and rotate is arranged on the first rotating shaft, a second rotating shaft is arranged between the movable rod of the detection rod away from the hand-held seat and the push rod, and a second torsion spring for driving the push rod to reset and rotate is arranged on the second rotating shaft.

[0007] Preferably, the impurity removal component includes a flexible tube sleeve that passes through the detection rod and extends into the push rod, an air duct arranged in the flexible tube sleeve, and an air jet opened at the end of the push rod and connected to the air duct, and an end of the air duct away from the air jet is connected to an air supply device that provides high-pressure air.

[0008] Preferably, a wire for supplying power to the distance measuring unit and the GPS positioning module is also provided in the flexible tube sleeve, and the wire is connected to a power supply device.

[0009] Preferably, the distance measuring part is provided with at least four distance measuring sensors, and the four distance measuring sensors are respectively placed on the upper and lower sides and the left and right sides of the top rod.

[0010] Preferably, a reeling rod is provided in the hand-held seat, a handle is provided at the end of the reeling rod, two pull ropes are wound around and connected to the reeling rod, and the two pull ropes are respectively connected to the two sides of the top rod.

[0011] Preferably, the impurity removal component also includes a rotating rod rotatably arranged in the top rod, a swinging plate arranged on the rotating rod, a micro motor arranged at the end of the swinging plate, a rotating tube connected to the output shaft of the micro motor, and a paddle evenly arranged in a circle on the outside of the rotating tube, and the rotating rod is sleeved with a third torsion spring for driving the swinging plate to reset and rotate.

[0012] Preferably, the push rod comprises a main rod body rotatably connected to the detection rod, an elastic telescopic rod connected to the main rod body, and a rod head connected to one end of the elastic telescopic rod away from the main rod body.

[0013] Preferably, a groove is provided on the main rod body, a positioning block is slidably connected in the groove, an elastic element is arranged between the positioning block and the inner wall of the groove, a positioning groove matching with the positioning block is provided on the swing plate, a wedge block is fixedly provided on the rod head, a movable hole that is movably abutted against the wedge block is provided on the positioning block, and an extrusion inclined surface that is movably abutted against the swing plate is provided at the bottom of the positioning block.

[0014] The present invention also discloses a measuring method of a rock crack measuring device for geological disaster investigation, comprising the following steps: S1: The staff holds the handheld seat and places it outside the rock crack. Then the detection rod slides in the handheld seat. The detection rod drives the mandrel and the measuring component at the end of the mandrel to go deep into the rock crack. The distance measuring sensor of the measuring component measures the distance in multiple directions inside the rock crack, cooperates with the GPS positioning module to monitor the current position information, and then calculates the distance between the inner walls of the rock crack through the computer system; S2: When the detection rod penetrates deep into the rock crack, after receiving the information that the detection rod is blocked, the staff will pull the ropes on both sides of the handheld seat one by one until the ropes drive the push rod to deflect relative to the detection rod, thereby shifting the push rod and continuing to transport the detection rod forward, so that the detection rod drives the push rod to move sideways. During this period, the various movable rods of the detection rod automatically rotate to adapt to the concave and convex surfaces of the rock crack; S3: When the measuring component measures the crack information in the rock crack, the air supply device provides high-pressure air to the top rod through the air guide pipe. The high-pressure air blows the gravel in the rock crack, so that the distance measuring sensor can accurately measure the internal information of the rock crack; S4: Some gravel falls to the bottom of the rock crack after being blown by high-pressure air. After the staff moves the detection rod downward to the bottom of the rock crack, they continue to push it deeper into the rock crack. The swinging pull rope top rod cannot move forward any further. At this time, the top rod abuts against the inner wall of the rock crack and continues to push the detection rod. Multiple movable rods of the detection rod abut against the inner wall of the rock crack until the rod head at the end of the top rod is stressed, the elastic telescopic rod is compressed, and the rod head approaches the main rod body. The wedge block on the rod head is inserted into the movable hole and applies thrust to the positioning block, causing the positioning block to shrink into the groove. The positioning block moves out of the positioning groove, the swing plate releases the rotation restriction and resets and rotates under the action of the third torsion spring. The lower end of the swing plate is placed at the bottom of the rock crack, and the micro motor is controlled to run, so that the micro motor drives the paddle plate to rotate through the rotating tube. The paddle plate turns over the gravel at the bottom of the rock crack, and the distance measuring sensor on the lower side of the top rod measures the bottom wall of the rock crack after the gravel is turned over.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The rock crack measuring device and method for geological disaster investigation, by arranging the detection rod to be composed of a plurality of elastically rotatably connected movable rods, facilitates the detection rod to cooperate with the measuring assembly to measure the crack width at different positions in the depth of the rock crack, enables the detection rod to smoothly enter the depth of the rock crack, and improves the accuracy of the rock crack measurement data; 2. The rock crack measuring device and method for geological disaster investigation can blow away the gravel on the side walls inside the rock cracks and move the gravel on the bottom walls inside the rock cracks by setting up a debris removal component, thereby improving the accuracy of the ranging sensor in measuring the internal crack information of the rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the external structure of the detection rod of the present invention; Figure 2 It is a schematic diagram of the connection structure between the hand-held seat and the detection rod of the present invention; Figure 3 It is a schematic diagram of the connection structure between the push rod and the detection rod of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the flexible pipe sleeve of the present invention; Figure 5 It is a schematic diagram of the external structure of the winding rod of the present invention; Figure 6 It is a schematic diagram of the structure of the swing plate of the present invention when it is turned over; Figure 7 It is a schematic diagram of the vertical cross-sectional structure of the mandrel of the present invention; Figure 8 It is a schematic diagram of the transverse cross-sectional structure of the mandrel of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged structural diagram of the middle part; Fig.10 It is a structural schematic diagram of the movable rod of the detection rod close to the top rod of the present invention; Fig.11 It is a schematic diagram of the structure of the detection rod of the present invention adapted to the concave and convex surface of the inner wall of the rock fracture; Fig.12 It is a schematic diagram of the cross-sectional structure of the flexible sleeve of the present invention in the mandrel.

[0017] In the figure: 1. hand-held seat; 2. detection rod; 201. movable rod; 202. first rotating shaft; 203. first torsion spring; 204. second rotating shaft; 205. second torsion spring; 3. push rod; 301. main rod body; 302. elastic telescopic rod; 303. rod head; 3031. wedge block; 4. measuring component; 401. distance measuring part; 5. flexible sleeve; 501. air guide tube; 502. jet nozzle; 6. guide wire; 7. winding rod; 701. handle; 702. pull rope; 8. rotating rod; 801. swing plate; 8011. positioning groove; 802. micro motor; 803. rotating tube; 804. dial plate; 805. third torsion spring; 9. groove; 901. positioning block; 9011. movable hole; 902. elastic element. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.10 , Fig.11 and Fig.12 A rock crack measuring device for geological disaster investigation comprises a handheld seat 1 and also comprises: A detection rod 2, the detection rod 2 is slidably connected to the hand-held seat 1, a push rod 3 is arranged at the end of the detection rod 2, and a measuring component 4 is arranged at the end of the push rod 3 away from the detection rod 2; and A debris removal component is arranged on the top rod 3 and is used to clean the gravel in the rock cracks; The measuring assembly 4 includes a distance measuring unit 401 disposed at the end of the detection rod 2, a camera, and a GPS positioning module for monitoring the position of the distance measuring unit 401. Both the distance measuring unit 401 and the GPS positioning module are connected to the background detection terminal.

[0021] Furthermore, the detection rod 2 includes a plurality of rotatably connected movable rods 201, a first rotating shaft 202 is arranged between two adjacent movable rods 201, and a first torsion spring 203 for driving the movable rod 201 to reset and rotate is arranged on the first rotating shaft 202. A second rotating shaft 204 is arranged between the movable rod 201 of the detection rod 2 away from the hand-held seat 1 and the top rod 3, and a second torsion spring 205 for driving the top rod 3 to reset and rotate is arranged on the second rotating shaft 204.

[0022] Furthermore, the impurity removal component includes a flexible tube sleeve 5 that passes through the detection rod 2 and extends into the push rod 3, an air duct 501 arranged in the flexible tube sleeve 5, and an air jet 502 opened at the end of the push rod 3 and connected to the air duct 501, and an end of the air duct 501 away from the air jet 502 is connected to an air supply device that provides high-pressure air.

[0023] Furthermore, a wire 6 for supplying power to the distance measuring unit 401 and the GPS positioning module is also provided in the flexible tube sleeve 5, and the wire 6 is connected to a power supply device.

[0024] Furthermore, the distance measuring unit 401 is provided with at least four distance measuring sensors, and the four distance measuring sensors are respectively placed on the upper and lower sides and the left and right sides of the top rod 3 .

[0025] Specifically, the staff holds the hand-held seat 1 and places the hand-held seat 1 on the outside of the rock crack, and then slides the detection rod 2 in the hand-held seat 1. The detection rod 2 drives the top rod 3 and the measuring component 4 at the end of the top rod 3 to penetrate into the rock crack. The power supply equipment supplies power to the distance measuring part 401, the camera and the GPS positioning module through the wire 6. The distance measuring sensor of the measuring component 4 measures the distance in multiple directions inside the rock crack, and cooperates with the GPS positioning module to monitor the current position information. When the measuring component 4 measures the crack information in the rock crack, the air supply equipment provides high-pressure air to the top rod 3 through the air guide pipe 501. The high-pressure air blows the gravel in the rock crack, so that the distance measuring sensor can accurately measure the internal information of the rock crack. The present application arranges the detection rod 2 to be composed of a plurality of elastically rotatably connected movable rods 201, so that the detection rod 2 cooperates with the measuring component 4 to measure the gap width at different positions deep in the rock crack, so that the detection rod 2 can smoothly enter the deep part of the rock crack, thereby improving the accuracy of the rock crack measurement data.

[0026] Example 2: Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 A rock crack measuring device for geological disaster investigation, based on Example 1, further, a winding rod 7 is provided in the hand-held seat 1, and a handle 701 is provided at the end of the winding rod 7. Two pull ropes 702 are wound around the winding rod 7, and the two pull ropes 702 are respectively connected to the two sides of the top rod 3.

[0027] Specifically, when the detection rod 2 penetrates deep into the rock crack, after receiving the information that the detection rod 2 is blocked, the staff will pull the pull ropes 702 on both sides of the hand-held seat 1 one by one until the pull ropes 702 drive the top rod 3 to deflect relative to the detection rod 2, thereby causing the top rod 3 to shift and continue to transport the detection rod 2 forward, so that the detection rod 2 drives the top rod 3 to move sideways, and during this period, the various movable rods 201 of the detection rod 2 automatically rotate to adapt to the concave and convex surfaces of the rock crack, thereby facilitating the measurement of the inside of the rock crack, and has a wide range of applicability.

[0028] Example 3: Reference Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Fig. 9, a rock crack measuring device for geological disaster investigation, based on Example 2, further, the impurity removal component also includes a rotating rod 8 rotatably arranged in the top rod 3, a swing plate 801 arranged on the rotating rod 8, a micro motor 802 arranged at the end of the swing plate 801, a rotating tube 803 connected to the output shaft of the micro motor 802, and a dial plate 804 uniformly arranged on the outside of the rotating tube 803 in a circumferential manner, and a third torsion spring 805 is sleeved on the rotating rod 8 for driving the swing plate 801 to reset and rotate.

[0029] Furthermore, the push rod 3 includes a main rod body 301 rotatably connected to the detection rod 2 , an elastic telescopic rod 302 connected to the main rod body 301 , and a rod head 303 connected to one end of the elastic telescopic rod 302 away from the main rod body 301 .

[0030] Furthermore, a groove 9 is provided on the main rod body 301, a positioning block 901 is slidably connected in the groove 9, an elastic element 902 is provided between the positioning block 901 and the inner wall of the groove 9, a positioning groove 8011 matching with the positioning block 901 is provided on the swing plate 801, a wedge block 3031 is fixed on the rod head 303, a movable hole 9011 that is movably opposed to the wedge block 3031 is provided on the positioning block 901, and an extrusion slope that is movably opposed to the swing plate 801 is provided at the bottom of the positioning block 901.

[0031] Specifically, some crushed stones fall to the bottom of the rock crack after being blown by the high-pressure air. After the staff moves the detection rod 2 downward to the bottom of the rock crack, it continues to push it into the depth of the rock crack. At this time, the swing plate 801 is limited by the positioning block 901 to prevent the swing plate 801 from affecting the detection rod 2 to go deep into the rock crack. When the swing pull rope 702 and the push rod 3 are unable to move forward, the push rod 3 abuts against the inner wall of the rock crack and continues to push the detection rod 2. The multiple movable rods 201 of the detection rod 2 abut against the inner wall of the rock crack until the rod head 303 at the end of the push rod 3 is stressed, the elastic telescopic rod 302 is compressed, and the rod head 303 approaches the main rod body 301. The wedge block 3031 on the rod head 303 is inserted into the movable hole 9011 and applies a thrust to the positioning block 901, causing the positioning block 901 to shrink into the groove 9. The elastic element 902, that is, the spring, is compressed, and the positioning block 901 moves out. The positioning groove 8011, the swing plate 801 releases the rotation restriction and resets and rotates under the action of the third torsion spring 805, the lower end of the swing plate 801 is placed at the bottom of the rock crack, and the micro motor 802 is controlled to run, so that the micro motor 802 drives the paddle plate 804 to rotate through the rotating tube 803, and the paddle plate 804 turns over the gravel at the bottom of the rock crack, and the distance measuring sensor on the lower side of the mandrel 3 measures the bottom wall of the rock crack after the gravel is turned over, thereby improving the accuracy of the distance measuring sensor in measuring the internal crack information of the rock; it should be noted that the bottom of the positioning block 901 is set as an extrusion slope, so that when the swing plate 801 moves up to be stored in the mandrel 3 later, the positioning block 901 avoids the swing plate 801 until the positioning block 901 is aligned with the positioning groove 8011, and the positioning block 901 is inserted into the positioning groove 8011 under the push of the elastic element 902 to position the swing plate 801.

[0032] The present invention also discloses a measuring method of a rock crack measuring device for geological disaster investigation, comprising the following steps: S1: The staff holds the hand-held seat 1 and places the hand-held seat 1 outside the rock crack, and then slides the detection rod 2 in the hand-held seat 1. The detection rod 2 drives the top rod 3 and the measuring component 4 at the end of the top rod 3 to penetrate into the rock crack. The distance measuring sensor of the measuring component 4 measures the distance in multiple directions inside the rock crack, cooperates with the GPS positioning module to monitor the current position information, and then calculates the distance between the inner walls of the rock crack through the computer system; S2: When the detection rod 2 penetrates into the rock crack, after receiving the information that the detection rod 2 is blocked, the staff member moves the pull ropes 702 on both sides of the hand-held seat 1 one by one until the pull ropes 702 drive the push rod 3 to deflect relative to the detection rod 2, thereby causing the push rod 3 to shift and continue to transport the detection rod 2 forward, so that the detection rod 2 drives the push rod 3 to move sideways, and during this period, each movable rod 201 of the detection rod 2 automatically rotates to adapt to the concave and convex surface of the rock crack; S3: When the measuring component 4 measures the crack information in the rock crack, the air supply device provides high-pressure air to the top rod 3 through the air guide pipe 501, and the high-pressure air blows the gravel in the rock crack, so that the distance measuring sensor can accurately measure the internal information of the rock crack; S4: Some of the gravel falls to the bottom of the rock crack after being blown by the high-pressure air. After the staff moves the detection rod 2 downward to the bottom of the rock crack, they continue to push it deeper into the rock crack. When the swinging rope 702 and the push rod 3 are unable to move forward, the push rod 3 abuts against the inner wall of the rock crack, and the detection rod 2 is continuously pushed. The multiple movable rods 201 of the detection rod 2 abut against the inner wall of the rock crack until the rod head 303 at the end of the push rod 3 is stressed, the elastic telescopic rod 302 is compressed, the rod head 303 approaches the main rod body 301, and the wedge block 3031 on the rod head 303 Insert the movable hole 9011 and apply thrust to the positioning block 901, so that the positioning block 901 shrinks into the groove 9, and the positioning block 901 moves out of the positioning groove 8011. The swing plate 801 releases the rotation restriction and returns to rotation under the action of the third torsion spring 805. The lower end of the swing plate 801 is placed at the bottom of the rock crack, and the micro motor 802 is controlled to run, so that the micro motor 802 drives the paddle plate 804 to rotate through the rotating tube 803. The paddle plate 804 turns over the gravel at the bottom of the rock crack, and the distance sensor on the lower side of the top rod 3 measures the bottom wall of the rock crack after the gravel is turned over.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rock crack measurement device for geological disaster investigation, comprising a handheld seat (1), characterized in that: Also includes: A detection rod (2), the detection rod (2) being slidably connected to the hand-held seat (1), a push rod (3) being provided at the end of the detection rod (2), and a measuring component (4) being provided at one end of the push rod (3) away from the detection rod (2); A debris removal component, which is arranged on the top rod (3) and is used to clean up the debris in the rock cracks; The measuring assembly (4) comprises a distance measuring unit (401) arranged at the end of the detection rod (2), a camera, and a GPS positioning module for monitoring the position of the distance measuring unit (401); the distance measuring unit (401) and the GPS positioning module are both connected to a background detection terminal.

2. A rock crack measuring device for geological disaster investigation according to claim 1, characterized in that: The detection rod (2) comprises a plurality of movable rods (201) connected in rotation, a first rotating shaft (202) being arranged between two adjacent movable rods (201), a first torsion spring (203) being arranged on the first rotating shaft (202) for driving the movable rod (201) to return to rotation, a second rotating shaft (204) being arranged between the movable rod (201) of the detection rod (2) away from the hand-held seat (1) and the push rod (3), a second torsion spring (205) being arranged on the second rotating shaft (204) for driving the push rod (3) to return to rotation.

3. A rock crack measuring device for geological disaster investigation according to claim 2, characterized in that: The impurity removal component comprises a flexible tube sleeve (5) penetrating the detection rod (2) and extending into the push rod (3), an air guide tube (501) arranged in the flexible tube sleeve (5), and an air jet (502) opened at the end of the push rod (3) and connected to the air guide tube (501); an end of the air guide tube (501) away from the air jet (502) is connected to an air supply device for providing high-pressure air.

4. A rock crack measuring device for geological disaster investigation according to claim 3, characterized in that: A conductor (6) for supplying power to the distance measuring unit (401) and the GPS positioning module is also provided in the flexible tube sleeve (5), and the conductor (6) is connected to a power supply device.

5. A rock crack measuring device for geological disaster investigation according to claim 4, characterized in that: The distance measuring part (401) is provided with at least four distance measuring sensors, and the four distance measuring sensors are respectively placed on the upper and lower sides and the left and right sides of the top rod (3).

6. A rock crack measuring device for geological disaster investigation according to claim 5, characterized in that: A reeling rod (7) is arranged inside the hand-held seat (1), a handle (701) is arranged at the end of the reeling rod (7), two pull ropes (702) are wound around and connected to the reeling rod (7), and the two pull ropes (702) are respectively connected to two sides of the top rod (3).

7. A rock crack measuring device for geological disaster investigation according to claim 6, characterized in that: The impurity removal assembly further comprises a rotating rod (8) rotatably arranged in the top rod (3), a swing plate (801) arranged on the rotating rod (8), a micro motor (802) arranged at the end of the swing plate (801), a rotating tube (803) connected to the output shaft of the micro motor (802), and a paddle (804) evenly arranged on the outside of the rotating tube (803) in a circumferential manner, and a third torsion spring (805) for driving the swing plate (801) to return to rotation is sleeved on the rotating rod (8).

8. A rock crack measuring device for geological disaster investigation according to claim 7, characterized in that: The push rod (3) comprises a main rod body (301) rotatably connected to the detection rod (2), an elastic telescopic rod (302) connected to the main rod body (301), and a rod head (303) connected to an end of the elastic telescopic rod (302) away from the main rod body (301).

9. A rock crack measuring device for geological disaster investigation according to claim 8, characterized in that: The main rod body (301) is provided with a groove (9), a positioning block (901) is slidably connected in the groove (9), an elastic element (902) is arranged between the positioning block (901) and the inner wall of the groove (9), the swing plate (801) is provided with a positioning groove (8011) matched with the positioning block (901), a wedge block (3031) is fixedly provided on the rod head (303), the positioning block (901) is provided with a movable hole (9011) movably abutting against the wedge block (3031), and the bottom of the positioning block (901) is provided with an extrusion inclined surface movably abutting against the swing plate (801).

10. A measuring method for the rock crack measuring device for geological disaster investigation according to claim 9, characterized in that: The following steps are involved: S1: The staff member holds the hand-held seat (1) and places the hand-held seat (1) outside the rock crack, and then slides the detection rod (2) inside the hand-held seat (1). The detection rod (2) drives the push rod (3) and the measuring component (4) at the end of the push rod (3) to penetrate into the rock crack. The distance measuring sensor of the measuring component (4) measures the distance in multiple directions inside the rock crack, cooperates with the GPS positioning module to monitor the current position information, and then calculates the distance between the inner walls of the rock crack through the computer system; S2: When the detection rod (2) penetrates deep into the rock crack, after receiving information that the detection rod (2) is blocked, the staff member moves the pull ropes (702) on both sides of the hand-held seat (1) one by one until the pull ropes (702) drive the push rod (3) to deflect relative to the detection rod (2), thereby causing the push rod (3) to shift and continue to transport the detection rod (2) forward, so that the detection rod (2) drives the push rod (3) to move sideways, and during this period, each movable rod (201) of the detection rod (2) automatically rotates to adapt to the concave and convex surface of the rock crack; S3: When the measuring component (4) measures the crack information in the rock crack, the air supply device provides high-pressure air to the top rod (3) through the air guide pipe (501), and the high-pressure air blows the gravel in the rock crack, so that the distance measuring sensor can accurately measure the internal information of the rock crack; S4: Some of the broken rocks are blown down to the bottom of the rock crack by the high-pressure air. After the staff moves the detection rod (2) downward to the bottom of the rock crack, they continue to push it deeper into the rock crack. When the swinging rope (702) and the push rod (3) are unable to move forward, the push rod (3) abuts against the inner wall of the rock crack, and the detection rod (2) is continuously pushed. The multiple movable rods (201) of the detection rod (2) abut against the inner wall of the rock crack until the rod head (303) at the end of the push rod (3) is stressed, the elastic telescopic rod (302) is compressed, the rod head (303) approaches the main rod body (301), and the wedge block (3031) on the rod head (303) is inserted. The movable hole (9011) is inserted and a thrust is applied to the positioning block (901), so that the positioning block (901) contracts into the groove (9), the positioning block (901) moves out of the positioning groove (8011), the swing plate (801) releases the rotation restriction and returns to rotate under the action of the third torsion spring (805), the lower end of the swing plate (801) is placed at the bottom of the rock crack, the micro motor (802) is controlled to operate, the micro motor (802) drives the paddle plate (804) to rotate through the rotating tube (803), the paddle plate (804) turns over the crushed stones at the bottom of the rock crack, and the distance measuring sensor on the lower side of the push rod (3) measures the bottom wall of the rock crack after the crushed stones are turned over.

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