A geological disaster investigation rock crack measurement device and measurement method

Abstract

The present invention discloses a device and a measurement method for measuring rock cracks in geological disaster exploration, belonging to the technical field of geological disaster exploration. A device for measuring rock cracks in geological disaster exploration includes a handheld base, and further includes: a detection rod, the detection rod is slidably connected to the handheld base, a top rod is arranged at the end of the detection rod, and a measurement component is arranged at the end of the top rod away from the detection rod; and a debris removal component, the debris removal component is arranged on the top rod and is used for cleaning the crushed stones in the rock cracks; wherein, the measurement component includes a ranging part arranged at the end of the detection rod, a camera and a GPS positioning module for monitoring the position of the ranging part, and both the ranging part and the GPS positioning module are connected to a background detection terminal; by setting the detection rod to be composed of a plurality of movable rods elastically and rotatably connected, the present invention facilitates the detection rod to cooperate with the measurement component to measure the gap widths at different positions in the depth of the rock cracks, and improves the accuracy of the measured data of the rock cracks.

Description

Technical Field

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

[0002] Geological disasters refer to geological processes or phenomena formed under the action of natural or human factors that cause losses to human life and property and damage to the environment. The distribution and variation laws of geological disasters in time and space are not only restricted by the natural environment but also related to human activities, and are often the result of the interaction between humans and nature. When measuring the cracks of geological disasters, a crack measurement device can be used for measurement.

[0003] Existing crack measurement 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 generated in the rock are generally large, and it is necessary to detect the internal crack conditions. Existing instruments cannot measure the widths of the gaps at different positions inside the rock cracks, and the inside of the rock cracks is uneven, resulting in poor accuracy of the measurement data results. 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 device and a method for measuring rock cracks in geological disaster investigation.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for measuring rock cracks in geological disaster investigation includes a hand-held seat, and further includes:

[0007] A detection rod, the detection rod is slidably connected to the hand-held seat, a top rod is provided at the end of the detection rod, and a measurement assembly is provided at the end of the top rod away from the detection rod; and

[0008] A debris removal assembly, the debris removal assembly is provided on the top rod and is used for cleaning the gravel in the rock crack;

[0009] Among them, the measurement assembly includes a distance measurement part, a camera provided at the end of the detection rod, and a GPS positioning module for monitoring the position of the distance measurement part. Both the distance measurement part and the GPS positioning module are connected to a background detection terminal.

[0010] Preferably, the detection rod includes a plurality of movable rods rotatably connected to each other. A first rotating shaft is provided between adjacent two movable rods, and a first torsion spring for driving the movable rod to rotate back to its original position is provided on the first rotating shaft. A second rotating shaft is provided between the movable rod of the detection rod away from the hand-held seat and the top rod, and a second torsion spring for driving the top rod to rotate back to its original position is provided on the second rotating shaft.

[0011] Preferably, the impurity removal component includes a flexible pipe sleeve penetrating the detection rod and extending into the top rod, an air guide pipe arranged in the flexible pipe sleeve, and an air jet opening formed at the end of the top rod and communicated with the air guide pipe. The end of the air guide pipe away from the air jet opening is connected with a gas supply device for providing high-pressure air.

[0012] Preferably, a wire for supplying power to the distance measurement part and the GPS positioning module is also arranged in the flexible pipe sleeve, and the wire is connected with a power supply device.

[0013] Preferably, at least four distance measurement sensors are arranged in the distance measurement part, and the four distance measurement sensors are respectively arranged on the upper and lower sides and the left and right sides of the top rod.

[0014] Preferably, a winding rod is arranged in the hand-held seat, a handle is arranged at the end of the winding rod, two pull ropes are wound and connected on the winding rod, and the two pull ropes are respectively connected with both sides of the top rod.

[0015] Preferably, the impurity removal component further 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 pipe connected with the output shaft of the micro motor, and a plurality of dial plates arranged circumferentially and uniformly on the outer side of the rotating pipe. A third torsion spring for driving the swinging plate to rotate back to its original position is sleeved on the rotating rod.

[0016] Preferably, the top rod includes a main rod body rotatably connected with the detection rod, an elastic telescopic rod connected with the main rod body, and a rod head connected with the end of the elastic telescopic rod away from the main rod body.

[0017] Preferably, a groove is formed in 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 matched with the positioning block is formed in the swinging plate, a wedge block is fixedly arranged on the rod head, a moving hole for movably abutting against the wedge block is formed in the positioning block, and a pressing inclined surface for movably abutting against the swinging plate is formed at the bottom of the positioning block.

[0018] The present invention also discloses a measuring method for a geological disaster exploration rock crack measuring device, including the following steps:

[0019] S1: The staff holds the hand-held seat, places the hand-held seat outside the rock crack, and then slides the detection rod in the hand-held seat. The detection rod drives the top rod and the measuring component at the end of the top rod to penetrate into the rock crack. The distance measurement sensors of the measuring component measure the distance in multiple directions inside the rock crack, and cooperate with the GPS positioning module to monitor the current position information, and then calculate the distance between the inner walls of the rock crack through a computer system;

[0020] S2: When the detection rod penetrates deep into the rock crack, after the staff receives the information that the detection rod is blocked, the staff pulls the ropes on both sides of the handheld seat one by one until the ropes drive the ejector rod to deflect relative to the detection rod, so that the ejector rod deflects, and then continues to convey the detection rod forward, causing the detection rod to drive the ejector rod to move sideward. During this period, each movable rod of the detection rod automatically rotates to adapt to the uneven surface of the rock crack;

[0021] S3: When the measurement component measures the crack information in the rock crack, the air supply device provides high-pressure air to the ejector rod through the air duct. The high-pressure air blows the crushed stones existing in the rock crack, enabling the distance measurement sensor to accurately measure the internal information of the rock crack;

[0022] S4: Some crushed stones are blown by the high-pressure air and fall to the bottom of the rock crack. After the staff moves the detection rod downward to the bottom of the rock crack and then continues to push it deep into the rock crack, when the ejector rod cannot move forward even by swinging the rope, at this time, the ejector rod abuts against the inner wall of the rock crack. Continuously pushing the detection rod, multiple movable rods of the detection rod abut against the inner side wall of the rock crack until the rod head at the end of the ejector rod is stressed, the elastic telescopic rod is compressed, the rod head approaches the main rod body, the wedge block on the rod head inserts into the movable hole and applies a thrust to the positioning block, causing the positioning block to contract into the groove, the positioning block moves out of the positioning groove, the swing plate is released from 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, controlling the operation of the micro motor, so that the micro motor drives the dial to rotate through the rotating tube. The dial flips the crushed stones at the bottom of the rock crack, and the distance measurement sensor under the ejector rod measures the bottom wall of the rock crack after the crushed stones are flipped.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. For the geological disaster investigation rock crack measurement device and measurement method, by setting the detection rod to be composed of multiple movable rods elastically connected in series, it is convenient for the detection rod to cooperate with the measurement component to measure the crack widths at different positions deep in the rock crack, enabling the detection rod to smoothly enter the deep part of the rock crack and improving the accuracy of the rock crack measurement data;

[0025] 2. For the geological disaster investigation rock crack measurement device and measurement method, by setting the impurity removal component, it can blow off the crushed stones on the inner side wall of the rock crack and can also stir the crushed stones on the inner bottom wall of the rock crack, thereby improving the accuracy of the distance measurement sensor for measuring the internal crack information of the rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the external structure schematic diagram of the detection rod of the present invention;

[0027] Figure 2 is the connection structure schematic diagram of the handheld seat and the detection rod of the present invention;

[0028] Figure 3 Schematic diagram of the connection structure between the ejector rod and the detection rod of the present invention;

[0029] Figure 4 Schematic cross-sectional structure diagram of the flexible tube sleeve of the present invention;

[0030] Figure 5 Schematic external structure diagram of the winding rod of the present invention;

[0031] Figure 6 Schematic structure diagram when the swing plate of the present invention flips;

[0032] Figure 7 Schematic vertical cross-sectional structure diagram of the ejector rod of the present invention;

[0033] Figure 8 Schematic horizontal cross-sectional structure diagram of the ejector rod of the present invention;

[0034] Figure 9 For the present invention Figure 8 Partial enlarged structure diagram of part A in;

[0035] Figure 10 Schematic structure diagram of the movable rod of the detection rod close to the ejector rod of the present invention;

[0036] Figure 11 Schematic structure diagram of the detection rod of the present invention adapting to the concave and convex surfaces of the inner wall of the rock crack;

[0037] Figure 12 Schematic cross-sectional structure diagram of the flexible sleeve inside the ejector rod of the present invention.

[0038] 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. Ejector rod; 301. Main rod body; 302. Elastic telescopic rod; 303. Rod head; 3031. Wedge block; 4. Measuring component; 401. Distance measuring part; 5. Flexible tube sleeve; 501. Air guide tube; 502. Air jet port; 6. Conducting wire; 7. Winding rod; 701. Handle; 702. Pulling 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. Moving hole; 902. Elastic element. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present invention.

[0041] Example 1: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 10 , Figure 11 and Figure 12 , a geological disaster exploration rock crack measurement device, including a handheld base 1, further including:

[0042] A detection rod 2, the detection rod 2 is slidably connected to the handheld base 1, a top rod 3 is arranged at the end of the detection rod 2, and a measurement component 4 is arranged at one end of the top rod 3 away from the detection rod 2; and

[0043] A debris removal component, the debris removal component is arranged on the top rod 3 and is used for cleaning the gravel in the rock crack;

[0044] Among them, the measurement component 4 includes a ranging part 401 arranged at the end of the detection rod 2, a camera, and a GPS positioning module for monitoring the position of the ranging part 401. Both the ranging part 401 and the GPS positioning module are connected to the background detection terminal.

[0045] Furthermore, the detection rod 2 includes a plurality of movable rods 201 that are rotatably connected. A first rotating shaft 202 is arranged between two adjacent movable rods 201. A first torsion spring 203 for driving the movable rod 201 to rotate back to its original position 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 handheld base 1 and the top rod 3. A second torsion spring 205 for driving the top rod 3 to rotate back to its original position is arranged on the second rotating shaft 204.

[0046] Furthermore, the debris removal component includes a flexible pipe sleeve 5 that penetrates the detection rod 2 and extends into the top rod 3, an air guide pipe 501 arranged in the flexible pipe sleeve 5, and an air jet port 502 opened at the end of the top rod 3 and communicated with the air guide pipe 501. One end of the air guide pipe 501 away from the air jet port 502 is connected to a gas supply device that provides high-pressure air.

[0047] Furthermore, a wire 6 for supplying power to the ranging part 401 and the GPS positioning module is also arranged in the flexible pipe sleeve 5, and the wire 6 is connected to a power supply device.

[0048] Furthermore, the distance measurement unit 401 is provided with at least four distance measurement sensors, which are respectively arranged on the upper and lower sides and the left and right sides of the ejector rod 3.

[0049] Specifically, the staff holds the handheld seat 1 and places the handheld seat 1 outside the rock crack. Then, the detection rod 2 slides in the handheld seat 1, and the detection rod 2 drives the ejector rod 3 and the measurement assembly 4 at the end of the ejector rod 3 to penetrate into the rock crack. The power supply device supplies power to the distance measurement unit 401, the camera, and the GPS positioning module through the wire 6. The distance measurement sensors of the measurement assembly 4 measure the distance in multiple directions inside the rock crack, and cooperate with the GPS positioning module to monitor the current position information. When the measurement assembly 4 measures the crack information inside the rock crack, the air supply device supplies high-pressure air to the ejector rod 3 through the air duct 501. The high-pressure air blows the crushed stones existing in the rock crack, so that the distance measurement sensors can accurately measure the internal information of the rock crack. In this application, the detection rod 2 is set to be composed of multiple movable rods 201 elastically and rotationally connected, which is convenient for the detection rod 2 to cooperate with the measurement assembly 4 to measure the gap widths at different positions deep in the rock crack, enabling the detection rod 2 to smoothly enter the deep part of the rock crack and improving the accuracy of the rock crack measurement data.

[0050] Embodiment 2: Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 On the basis of Embodiment 1, further, a winding rod 7 is arranged in the handheld seat 1. A handle 701 is arranged at the end of the winding rod 7. Two pull ropes 702 are wound and connected to the winding rod 7. The two pull ropes 702 are respectively connected to both sides of the ejector rod 3.

[0051] Specifically, when the detection rod 2 penetrates into the interior of the rock crack, after the staff receives the information that the detection rod 2 is blocked, the staff successively pulls the pull ropes 702 on both sides of the handheld seat 1 until the pull ropes 702 drive the ejector rod 3 to deflect relative to the detection rod 2, so that the ejector rod 3 is offset. Then, the detection rod 2 is continuously fed forward, and the detection rod 2 drives the ejector rod 3 to move sideways. During this period, the respective movable rods 201 of the detection rod 2 automatically rotate to adapt to the uneven surface of the rock crack, thus facilitating the measurement of the interior of the rock crack and having a wide applicability.

[0052] Embodiment 3: Refer to Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9, a geological disaster exploration rock crack measurement device. On the basis of Embodiment 2, further, the impurity removal component further 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 arranged circumferentially and uniformly on the outer side of the rotating tube 803. A third torsion spring 805 for driving the swing plate 801 to reset and rotate is sleeved on the rotating rod 8.

[0053] Further, the top 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.

[0054] Further, a groove 9 is formed in the main rod body 301. 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. A positioning groove 8011 matched with the positioning block 901 is formed in the swing plate 801. A wedge block 3031 is fixedly arranged on the rod head 303. A moving hole 9011 for movably abutting against the wedge block 3031 is formed in the positioning block 901. An extrusion inclined surface for movably abutting against the swing plate 801 is formed at the bottom of the positioning block 901.

[0055] Specifically, some crushed stones are blown by high-pressure air and fall to the bottom of the rock crack. After the staff moves the detection rod 2 downward to the bottom of the rock crack and continues to push it deeper into 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 from penetrating deep into the rock crack. When the ejector rod 3 of the swing pull rope 702 can no longer move forward, at this time, the ejector rod 3 abuts against the inner wall of the rock crack. Continuously push the detection rod 2, and the multiple movable rods 201 of the detection rod 2 abut against the inner side wall of the rock crack until the rod head 303 at the end of the ejector rod 3 is stressed, the elastic telescopic rod 302 is compressed, and the rod head 303 moves closer to the main rod body 301. The wedge block 3031 on the rod head 303 inserts into the movable hole 9011 and applies a thrust to the positioning block 901, causing the positioning block 901 to contract into the groove 9, the elastic element 902, that is, the spring, is compressed, the positioning block 901 moves out of the positioning groove 8011, the swing plate 801 is released from the rotation restriction and rotates back 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. Control the operation of the micro motor 802, so that the micro motor 802 drives the dial 804 to rotate through the rotating tube 803. The dial 804 turns over the crushed stones at the bottom of the rock crack, and the distance measuring sensor on the lower side of the ejector rod 3 measures the bottom wall of the rock crack after turning over the crushed stones, thereby improving the accuracy of the distance measuring sensor for measuring the information of the internal cracks of the rock. It should be noted that the bottom of the positioning block 901 is provided with an extrusion inclined surface, which is convenient for the positioning block 901 to avoid the swing plate 801 when the swing plate 801 moves upward and is received into the ejector rod 3 later, 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.

[0056] The present invention also discloses a measuring method for a rock crack measuring device for geological disaster investigation, including the following steps:

[0057] S1: The staff holds the hand-held seat 1, 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 ejector rod 3 and the measuring component 4 at the end of the ejector rod 3 to penetrate deep into the rock crack. 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, and then calculates the distance between the inner walls of the rock crack through the computer system;

[0058] S2: When the detection rod 2 penetrates deep into the rock crack, after the staff receives the information that the detection rod 2 is blocked, the staff sequentially pulls the pull ropes 702 on both sides of the hand-held seat 1 until the pull ropes 702 drive the ejector rod 3 to deflect relative to the detection rod 2, so that the ejector rod 3 deflects. Continue to feed the detection rod 2 forward, so that the detection rod 2 drives the ejector rod 3 to move sideward. During this period, the respective movable rods 201 of the detection rod 2 automatically rotate to adapt to the uneven surface of the rock crack;

[0059] S3: When the measuring component 4 measures the crack information in the rock crack, the air supply device provides high-pressure air to the ejector rod 3 through the air duct 501. The high-pressure air blows the gravel existing in the rock crack, enabling the distance measuring sensor to accurately measure the internal information of the rock crack;

[0060] S4: Some of the gravel is blown by the high-pressure air and falls to the bottom of the rock crack. After the staff moves the detection rod 2 downward to the bottom of the rock crack and then continues to push it deeper into the rock crack, when the ejector rod 3 can no longer move forward even with the swinging pull rope 702, at this time, the ejector rod 3 abuts against the inner wall of the rock crack. Continuing to push the detection rod 2, the multiple movable rods 201 of the detection rod 2 abut against the inner side wall of the rock crack until the rod head 303 at the end of the ejector rod 3 is stressed, the elastic telescopic rod 302 is compressed, and the rod head 303 moves closer to the main rod body 301. The wedge block 3031 on the rod head 303 inserts into the movable hole 9011 and applies a thrust to the positioning block 901, causing the positioning block 901 to contract into the groove 9, the positioning block 901 moves out of the positioning groove 8011, the swing plate 801 is released from the rotation restriction and rotates back 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. Control the operation of the micro motor 802, so that the micro motor 802 drives the dial 804 to rotate through the rotating tube 803. The dial 804 turns over the gravel at the bottom of the rock crack, and the distance measuring sensor under the ejector rod 3 measures the bottom wall of the rock crack after the gravel is turned over.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A geological disaster investigation rock crack measurement device, including a handheld base (1), characterized in that, It further includes: A detection rod (2), which is slidably connected to the handheld seat (1). A push rod (3) is provided at the end of the detection rod (2), and a measuring assembly (4) is provided at one end of the push rod (3) away from the detection rod (2); An impurity removal assembly, which is arranged on the push rod (3) and is used to clean the crushed stones in the rock crack; Wherein, the measuring assembly (4) includes a ranging part (401) arranged at the end of the detection rod (2), a camera, and a GPS positioning module for monitoring the position of the ranging part (401). Both the ranging part (401) and the GPS positioning module are connected to the background detection terminal; The impurity removal assembly includes a rotating rod (8) rotatably arranged in the push 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 baffle (804) arranged circumferentially and uniformly on the outer side of the rotating tube (803). A third torsion spring (805) for driving the swing plate (801) to rotate back to its original position is sleeved on the rotating rod (8); 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); A groove (9) is formed on the main rod body (301). 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). A positioning groove (8011) matching the positioning block (901) is formed on the swing plate (801). A wedge block (3031) is fixedly arranged on the rod head (303). A movable hole (9011) for actively abutting against the wedge block (3031) is formed on the positioning block (901). An extrusion inclined surface for actively abutting against the swing plate (801) is formed at the bottom of the positioning block (901).

2. The rock fracture measuring device for geological disaster exploration according to claim 1, characterized in that, The detection rod (2) includes a plurality of movable rods (201) rotatably connected. A first rotating shaft (202) is arranged between two adjacent movable rods (201). A first torsion spring (203) for driving the movable rod (201) to rotate back to its original position 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 handheld seat (1) and the push rod (3). A second torsion spring (205) for driving the push rod (3) to rotate back to its original position is arranged on the second rotating shaft (204).

3. The geological disaster exploration rock fracture measurement device according to claim 2, characterized in that The impurity removal assembly further includes a flexible pipe sleeve (5) passing through the detection rod (2) and extending into the push rod (3), an air guide pipe (501) arranged in the flexible pipe sleeve (5), and an air jet port (502) formed at the end of the push rod (3) and communicating with the air guide pipe (501). The end of the air guide pipe (501) away from the air jet port (502) is connected to an air supply device providing high-pressure air.

4. A geological disaster investigation rock fracture measurement device according to claim 3, characterized in that, A wire (6) for powering the ranging unit (401) and the GPS positioning module is further arranged in the flexible pipe sleeve (5), and the wire (6) is connected to a power supply device.

5. The geological disaster exploration rock fracture measurement device according to claim 4, characterized in that, The ranging unit (401) is provided with at least four ranging sensors, and the four ranging sensors are respectively arranged on the upper and lower sides and the left and right sides of the ejector rod (3).

6. The geological disaster exploration rock fracture measurement device according to claim 5, characterized in that, A winding rod (7) is arranged in the hand-held seat (1), a handle (701) is arranged at the end of the winding rod (7), two pull ropes (702) are wound and connected to the winding rod (7), and the two pull ropes (702) are respectively connected to both sides of the ejector rod (3).

7. A measuring method of the geological disaster exploration rock crack measuring device according to claim 6, characterized in that, It includes the following steps: S1: The staff holds the hand-held seat (1), 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 ejector rod (3) and the measurement assembly (4) at the end of the ejector rod (3) to penetrate into the rock crack. The ranging sensors of the measurement assembly (4) perform ranging in multiple directions inside the rock crack, cooperate with the GPS positioning module to monitor the current position information, and then calculate 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 the staff receives the information that the detection rod (2) is blocked, the staff sequentially pulls the pull ropes (702) on both sides of the hand-held seat (1) until the pull ropes (702) drive the ejector rod (3) to deflect relative to the detection rod (2), so that the ejector rod (3) is offset. Then continue to feed the detection rod (2) forward, so that the detection rod (2) drives the ejector rod (3) to move sideways. During this period, each movable rod (201) of the detection rod (2) automatically rotates to adapt to the uneven surface of the rock crack. S3: When the measurement assembly (4) measures the crack information in the rock crack, the air supply device provides high-pressure air to the ejector rod (3) through the air duct (501). The high-pressure air blows the crushed stones existing in the rock crack, so that the ranging sensors can accurately measure the internal information of the rock crack. S4: Part of the crushed stones are blown by high-pressure air and fall to the bottom of the rock crack. After the staff moves the detection rod (2) downward to the bottom of the rock crack and then continues to push it deeper into the rock crack, when the ejector rod (3) of the swing pull rope (702) can no longer move forward, at this time, the ejector rod (3) abuts against the inner wall of the rock crack. Continuously push the detection rod (2), and the multiple movable rods (201) of the detection rod (2) abut against the inner side wall of the rock crack until the rod head (303) at the end of the ejector rod (3) is stressed, the elastic telescopic rod (302) is compressed, and the rod head (303) moves closer to the main rod body (301). The wedge block (3031) on the rod head (303) inserts into the movable hole (9011) and applies a thrust to the positioning block (901), causing the positioning block (901) to contract into the groove (9), the positioning block (901) moves out of the positioning groove (8011), the swing plate (801) is released from 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. Control the operation of the micro motor (802), so that the micro motor (802) drives the dial (804) to rotate through the rotating tube (803). The dial (804) turns over the crushed stones at the bottom of the rock crack, and the distance measuring sensor on the lower side of the ejector rod (3) measures the bottom wall of the rock crack after the crushed stones are turned over.

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