A sensing detection device for exploring geological landslide based on direct current resistivity method and a detection method thereof

Abstract

The application relates to the technical field of geoelectric detection, in particular to a sensing detection device for exploring geological landslides based on a direct current resistivity method and a detection method thereof, which comprises a bottom plate, a spherical cavity is formed in the bottom plate, a ball head is arranged in the spherical cavity, and a supporting rod is installed on the ball head; a locking assembly is arranged on the bottom plate and can lock or unlock the spherical cavity and the ball head; a probe is arranged inside the supporting rod and can move along the length direction of the supporting rod; a screwing-in assembly is installed on the bottom plate and comprises a screwing-in structure and an extension structure; the screwing-in structure can fix the bottom plate on the ground; and the extension structure can lock the screwing-in structure when the screwing-in structure moves to the stroke end, thereby improving the stability of the equipment.

Description

Technical Field

[0001] This invention relates to the field of geoelectric detection technology, specifically a sensing and detection device and method for exploring geological landslides based on the DC resistivity method. Background Technology

[0002] The DC resistivity method is a commonly used geophysical exploration method in geological landslide exploration. By supplying a DC current to the ground and measuring the potential difference to calculate the apparent resistivity, the structure, water content, and sliding surface distribution of the underground rock and soil mass can be inferred. In the application of this method, it is usually necessary to place a sensing device at the point to be measured. The device generally includes components such as a base plate, support rod, photovoltaic panel, control box, and probe. The support rod is used to fix the photovoltaic panel and control box. To ensure that the photovoltaic panel can effectively receive sunlight and that the sensors inside the control box (such as inclinometers and accelerometers) can obtain accurate attitude data, the support rod must be kept vertical. Otherwise, a tilted support rod will reduce the power generation efficiency of the photovoltaic panel and affect the measurement accuracy of the landslide deformation by the sensors inside the control box, thereby reducing the reliability of the entire detection result.

[0003] In landslide-prone areas, the ground surface often naturally has a certain slope, sometimes even a significant one. To provide a horizontal and stable installation foundation for the detection device, the common practice in existing technologies is to first excavate, formwork, and pour a level concrete foundation at the selected detection point. After the cement has fully hardened, the base plate of the detection device is fixed to this foundation, and finally, the support rods are adjusted to a vertical position. While this method effectively ensures the verticality of the support rods, its drawbacks are also quite obvious:

[0004] On the one hand, cement foundations require processes such as batching, pouring, and curing, which typically take several days or even longer to solidify, greatly extending the preparation period before testing and hindering emergency monitoring or rapid assessment of landslides. On the other hand, cement materials and labor costs are high, especially in mountainous areas with inconvenient transportation, where material transportation and construction difficulties are further increased, resulting in high overall testing costs. In addition, pouring cement foundations is an irreversible site modification that may cause some damage to the original geological environment, and the foundation is prone to cracking after landslide deformation, making it difficult to reuse. Summary of the Invention

[0005] The purpose of this invention is to provide a sensing and detection device and method for geological landslide exploration based on DC resistivity method, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A sensing and detection device for geological landslide exploration based on DC resistivity method, comprising:

[0008] A base plate, wherein a spherical cavity is formed on the base plate, a ball head is disposed inside the spherical cavity, and a support rod is installed on the ball head;

[0009] A locking assembly is disposed on the base plate, the locking assembly being capable of locking or unlocking the spherical cavity and the ball head;

[0010] A probe is disposed inside the support rod and is capable of moving along the length of the support rod;

[0011] A screw-in assembly is mounted on the base plate. The screw-in assembly includes a screw-in structure and an extension structure. The screw-in structure can fix the base plate to the ground, and the extension structure can lock the screw-in structure when it moves to the end of its stroke.

[0012] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the locking assembly includes a through groove disposed around the spherical cavity and extending into the interior of the spherical cavity, a locking element slidably installed in the through groove, and the locking element is connected to the base plate by a columnar spring;

[0013] The locking assembly also includes a driving member disposed on the base plate. The driving member cooperates with a first convex shaft connected to the locking member and is able to drive the locking foot to move away from the spherical cavity.

[0014] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the driving component is provided with multiple sets of inclined surfaces and limiting grooves, the inclined surfaces cooperate with the first convex shaft, and can drive the locking component to move.

[0015] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the support rod has a hollow structure inside and a stepped groove is provided on the support rod;

[0016] The support rod is also fitted with an annular component, and a connecting rod is provided inside the annular component. The connecting rod passes through the stepped groove and is connected to the probe.

[0017] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the stepped groove includes a vertical groove arranged along the length of the support rod and multiple sets of horizontal grooves, the multiple sets of horizontal grooves being equidistantly distributed and connected to the vertical groove.

[0018] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the rotary structure includes multiple sets of rotating sleeves rotatably mounted on the base plate, the multiple sets of rotating sleeves are connected by a toothed belt, and a drill rod is slidably sleeved inside the rotating sleeve, and a drill bit is provided at the lower end of the drill rod;

[0019] The drill pipe has a hollow interior, and the extension structure is located inside the drill pipe.

[0020] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the inner wall of the rotating sleeve is provided with a groove, and the outer wall of the drill rod is provided with a protrusion, the groove and the protrusion slidingly engaging.

[0021] The sensing and detection device for geological landslide exploration based on DC resistivity method as described above: the extension structure includes multiple sets of extension members disposed in the drill bit, and one end of the extension member is provided with a second convex shaft;

[0022] The extension structure also includes a rotating rod coaxially arranged with the drill rod. One end of the rotating rod is provided with multiple sets of drive grooves, and the end of the drive groove away from the center of the rotating rod is provided with an arc-shaped groove.

[0023] A method for geological detection using the aforementioned sensing and detection device based on DC resistivity method for exploring geological landslides includes the following steps:

[0024] Step 1: Place the base plate on the corresponding detection point and release the locking assembly to allow the support rod to move relative to the base plate;

[0025] Step 2: Adjust the verticality of the support rod, and then lock the support rod using the locking assembly;

[0026] Step 3: Control the movement of the screwing component so that the screwing structure first screws into the soil, and then control the movement of the extension structure to lock the screwing structure.

[0027] Step 4: Adjust the probe protrusion to the ball head according to the testing requirements, until the probe is inserted into the soil to the predetermined depth.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. When placing the testing device on a slope, the base plate and support rod can be unlocked first. After the support rod is adjusted to be vertical, it can be locked again. No matter how the ground slope changes, the support rod can always be kept vertical. Compared with the existing technology that requires pouring a cement foundation at the testing point to ensure stability, this solution greatly shortens the construction cycle, simplifies the testing process, and improves the flexibility and efficiency of on-site operations.

[0030] 2. It can precisely control the insertion depth of the probe, avoiding deviations in detection data caused by inconsistent depths, and significantly improving the reliability and repeatability of detection results; at the same time, the operation process is simple and labor-saving, and there is no need for manual continuous maintenance of the depth, further improving the convenience and efficiency of on-site operations.

[0031] 3. The extension is inserted into the soil around the drill bit, which on the one hand anchors the drill bit in the soil, and on the other hand significantly increases the contact area between the drill bit and the soil, thereby greatly improving the drill bit's pull-out resistance and rotational stability in the soil. Even in soft or slippery geological conditions, it can ensure the stability and reliability of the base plate and the entire detection device, providing solid support for subsequent measurements. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0033] Figure 2 This is an exploded view of the base plate and support rod in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0034] Figure 3 This is an exploded view of the support rod and probe structure in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0035] Figure 4 This is a schematic diagram of the ring component and probe in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0036] Figure 5 This is a schematic diagram of the locking component in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0037] Figure 6 This is a schematic diagram of the locking component in a sensing and detection device for geological landslide exploration based on the DC resistivity method, taken from another angle.

[0038] Figure 7 This is a schematic diagram of the spiral component in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0039] Figure 8 This is a schematic diagram of the spiral structure in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0040] Figure 9 This is an exploded view of the rotating sleeve and drill pipe structure in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0041] Figure 10 This is an exploded view of the extended structure in a sensing and detection device for geological landslide exploration based on the DC resistivity method.

[0042] In the diagram: 1. Base plate; 101. Spherical cavity; 102. Arc-shaped guide; 2. Support rod; 201. Horizontal groove; 202. Vertical groove; 3. Ball head; 4. Photovoltaic panel; 5. Control box; 6. Ring component; 7. Connecting rod; 8. Probe; 9. Locking component; 901. First convex shaft; 10. Cylindrical spring; 11. Driving component; 1101. Inclined surface; 1102. Limiting groove; 12. Rotating sleeve; 1201. Groove; 13. Drill rod; 1301. Protrusion; 1302. Drill bit; 14. Rotating rod; 1401. Driving groove; 1402. Arc-shaped groove; 15. Extension component; 1501. Second convex shaft; 16. Toothed belt. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0044] Please see Figures 1-10 As an embodiment of the present invention, the sensing and detection device for geological landslide exploration based on DC resistivity method includes: a base plate 1, a locking assembly, a probe 8 and a screw-in assembly.

[0045] A spherical cavity 101 is formed on the base plate 1. A ball head 3 is provided inside the spherical cavity 101. A support rod 2 is installed on the ball head 3. A photovoltaic panel 4 and a control box 5 are provided on the support rod 2.

[0046] The locking assembly is disposed on the base plate 1, and the locking assembly can lock or unlock the spherical cavity 101 and the ball head 3;

[0047] The locking assembly includes a through groove disposed around the spherical cavity 101 and extending into the interior of the spherical cavity 101. A locking member 9 is slidably installed in the through groove. The locking member 9 is connected to the base plate 1 by a columnar spring 10.

[0048] The locking assembly further includes a driving member 11 disposed on the base plate 1. The driving member 11 is slidably connected to the arc-shaped guide member 102 disposed on the base plate 1, and the driving member 11 cooperates with the first convex shaft 901 connected to the locking member 9, which can drive the locking member 9 away from the spherical cavity 101. The driving member 11 is provided with multiple sets of inclined surfaces 1101 and limiting grooves 1102. The inclined surfaces 1101 cooperate with the first convex shaft 901, which can drive the locking member 9 to move.

[0049] In this embodiment, in the initial state, the cylindrical spring 10 is in a stretched state, thereby applying a traction force to the locking member 9 in the direction of the ball head 3, so that the locking member 9 is pressed against the surface of the ball head 3. At this time, the friction between the locking member 9 and the ball head 3 locks the ball head 3, ensuring that the ball head 3 and the support rod 2 can remain stable relative to the base plate 1 under the detection condition.

[0050] When the detection area is located on a slope, the base plate 1 is first placed on the ground. Then, the drive component 11 is rotated so that the inclined surface 1101 on it contacts the first convex shaft 901. As the drive component 11 continues to rotate, the inclined surface 1101 pushes the first convex shaft 901 away from the ball head 3, thereby releasing the lock on the ball head 3. In this unlocked state, the verticality of the support rod 2 can be freely adjusted. After the adjustment is completed, the drive component 11 is rotated in the opposite direction, and the elastic force of the column spring 10 presses the locking component 9 against the ball head 3 again, restoring the lock.

[0051] Furthermore, when the first convex shaft 901 moves into the limiting groove 1102, it is limited in the groove. At this time, the verticality of the support rod 2 can be easily adjusted without the need for the installer to continuously maintain the position of the drive component 11, which significantly reduces the difficulty of operation.

[0052] Based on the above structure, when placing the detection device on the slope, the base plate 1 and the support rod 2 can be unlocked first, and then locked again after the support rod 2 is adjusted to be vertical. No matter how the ground slope changes, the support rod 2 can always be kept vertical. Compared with the existing technology that requires pouring a cement foundation at the detection point to ensure stability, this solution greatly shortens the construction cycle, simplifies the detection process, and improves the flexibility and efficiency of on-site operations.

[0053] Please see Figures 3-4 The probe 8 is disposed inside the support rod 2 and can move along the length of the support rod 2. Specifically, the support rod 2 has a hollow structure inside and a stepped groove is provided on the support rod 2.

[0054] The support rod 2 is also fitted with an annular part 6, and a connecting rod 7 is provided inside the annular part 6. The connecting rod 7 passes through the stepped groove and is connected to the probe 8. The stepped groove includes a vertical groove 202 arranged along the length direction of the support rod 2 and multiple sets of horizontal grooves 201. The multiple sets of horizontal grooves 201 are equidistantly distributed and communicate with the vertical groove 202.

[0055] In this embodiment, in the initial state, the probe 8 is retracted into the support rod 2, thereby effectively avoiding interference between the probe 8 and the soil during the process of adjusting the verticality of the support rod 2, and preventing the probe 8 from being damaged by lateral forces or affecting the adjustment operation.

[0056] After the verticality of the support rod 2 is adjusted and the base plate 1 is fixed to the ground, the operator drives the probe 8 to extend towards the soil through the ring part 6. When the probe 8 reaches the preset depth position, rotating the ring part 6 can make the connecting rod 7 enter the corresponding horizontal groove 201, thereby locking the probe 8 at that depth position and ensuring that the probe 8's downward probing depth remains constant.

[0057] Based on the above design, the insertion depth of probe 8 can be precisely controlled, avoiding deviations in detection data caused by inconsistent depths, and significantly improving the reliability and repeatability of detection results. At the same time, the operation process is simple and labor-saving, and there is no need for manual continuous maintenance of depth, further improving the convenience and efficiency of on-site operations.

[0058] Please see Figure 1 , Figures 7-9 The screw-in assembly is mounted on the base plate 1. The screw-in assembly includes a screw-in structure and an extension structure. The screw-in structure can fix the base plate 1 to the ground. The extension structure can lock the screw-in structure when the screw-in structure moves to the end of its stroke.

[0059] The rotary advance structure includes multiple sets of rotating sleeves 12 rotatably mounted on the base plate 1. The multiple sets of rotating sleeves 12 are connected by a toothed belt 16, and a drill rod 13 is slidably sleeved inside the rotating sleeve 12. A drill bit 1302 is provided at the lower end of the drill rod 13.

[0060] The drill rod 13 has a hollow interior, and the extension structure is disposed inside the drill rod 13. Furthermore, the inner wall of the rotating sleeve 12 is provided with a groove 1201, and the outer wall of the drill rod 13 is provided with a protrusion 1301. The groove 1201 and the protrusion 1301 are slidably engaged.

[0061] In this embodiment, after the base plate 1 is placed on the ground, the drill bit 1302 at the lower part of the drill rod 13 initially abuts against the lower end face of the base plate 1. At this time, the operator rotates one set of rotating sleeves 12. Under the transmission action of the toothed belt 16, multiple sets of rotating sleeves 12 achieve synchronous rotation. Since the rotating sleeves 12 form a mating connection with the protrusions 1301 on the drill rod 13 through the grooves 1201, when the rotating sleeves 12 rotate, the drill rod 13 and the drill bit 1302 rotate synchronously. Under the spiraling action of the drill bit 1302, the drill rod 13 gradually spirals into the ground. When the drill rod 13 moves to the end of its stroke, its upper end abuts against the base plate 1, thereby pressing and fixing the base plate 1 to the ground. Through the above structure, the toothed belt 16 drives multiple sets of drill rods 13 to rotate synchronously, so that each drill rod 13 drills into the soil at the same time and to the same depth, avoiding the tilting or uneven force of the base plate 1 caused by unilateral locking, and ensuring that the base plate 1 is subjected to uniform force. At the same time, only one set of rotating sleeves 12 needs to be rotated to drive all drill rods 13 to work, eliminating the need for individual operation, which greatly reduces the labor intensity and time cost of on-site operations. When the drill rod 13 rotates to the end of its stroke, it forms a reverse pressing with the base plate 1, so that the base plate 1 is firmly attached to the ground. Even in the case of uneven ground or slightly soft soil, it can ensure the stable support of the base plate 1 during the testing process, thus providing a reliable guarantee for the accuracy of subsequent measurement data.

[0062] Please see Figures 9-10 The extension structure includes multiple sets of extension members 15 disposed within the drill bit 1302, and one end of each extension member 15 is provided with a second convex shaft 1501.

[0063] The extension structure also includes a rotating rod 14 coaxially arranged with the drill rod 13. One end of the rotating rod 14 is provided with multiple sets of drive grooves 1401, and the end of the drive groove 1401 away from the center of the rotating rod 14 is provided with an arc-shaped groove 1402.

[0064] In this embodiment, in the initial state, the extension 15 is retracted into the drill bit 1302, thereby avoiding the extension 15 interacting with the soil during the rotation of the drill rod 13 and thus avoiding additional rotational resistance of the drill rod 13, ensuring that the drill rod 13 can be smoothly and easily screwed into the ground.

[0065] After the drill rod 13 enters the predetermined depth and presses the base plate 1 onto the ground, the operator rotates the rotary rod 14, causing the drive groove 1401 and the arc groove 1402 to move. During this process, the second convex shaft 1501 first cooperates with the drive groove 1401 to drive the extension 15 to extend outward from the drill bit 1302. When the extension 15 reaches its maximum extension, the second convex shaft 1501 then enters the arc groove 1402 to lock the extension 15. At this time, the extension 15 is inserted into the soil around the drill bit 1302, which on the one hand anchors the drill bit 1302 into the soil, and on the other hand significantly increases the contact area between the drill bit 1302 and the soil, thereby greatly improving the drill bit 1302's pull-out resistance and anti-rotation stability in the soil. Even in soft or slippery geological conditions, it can ensure the stability and reliability of the base plate 1 and the entire detection device, providing solid support for subsequent measurements.

[0066] As an embodiment of the present invention, a method for geological detection using the aforementioned sensing and detection device for exploring geological landslides based on the DC resistivity method is also proposed, comprising the following steps:

[0067] Step 1: Place the base plate 1 on the corresponding detection point and release the locking assembly so that the support rod 2 can move relative to the base plate 1;

[0068] Step 2: Adjust the verticality of support rod 2, and then lock support rod 2 using the locking assembly;

[0069] Step 3: Control the movement of the screwing component so that the screwing structure first screws into the soil, and then control the movement of the extension structure to lock the screwing structure.

[0070] Step 4: According to the testing requirements, make the probe 8 protrude from the ball head 3 until the probe 8 is inserted into the soil to a predetermined depth.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sensing and detection device for geological landslide exploration based on the DC resistivity method, characterized in that, include: A base plate, wherein a spherical cavity is formed on the base plate, a ball head is disposed inside the spherical cavity, and a support rod is installed on the ball head; A locking assembly is disposed on the base plate, the locking assembly being capable of locking or unlocking the spherical cavity and the ball head; A probe is disposed inside the support rod and is capable of moving along the length of the support rod; A screw-in assembly is mounted on the base plate. The screw-in assembly includes a screw-in structure and an extension structure. The screw-in structure can fix the base plate to the ground, and the extension structure can lock the screw-in structure when it moves to the end of its stroke.

2. The sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 1, characterized in that, The locking assembly includes a through groove disposed around the spherical cavity and extending into the interior of the spherical cavity, a locking element slidably installed in the through groove, and the locking element being connected to the base plate by a cylindrical spring; The locking assembly also includes a driving member disposed on the base plate. The driving member cooperates with a first convex shaft connected to the locking member and is able to drive the locking foot to move away from the spherical cavity.

3. The sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 2, characterized in that, The driving component is provided with multiple sets of inclined surfaces and limiting grooves. The inclined surfaces cooperate with the first convex shaft to drive the locking component to move.

4. The sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 1, characterized in that, The support rod has a hollow interior and is provided with stepped grooves. The support rod is also fitted with an annular component, and a connecting rod is provided inside the annular component. The connecting rod passes through the stepped groove and is connected to the probe.

5. The sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 4, characterized in that, The stepped groove includes a vertical groove arranged along the length of the support rod and multiple sets of horizontal grooves, the multiple sets of horizontal grooves being equidistantly distributed and communicating with the vertical groove.

6. The sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 1, characterized in that, The screw-in structure includes multiple sets of rotating sleeves rotatably mounted on the base plate. The multiple sets of rotating sleeves are connected by a toothed belt, and a drill rod is slidably sleeved inside the rotating sleeve. A drill bit is provided at the lower end of the drill rod. The drill pipe has a hollow interior, and the extension structure is located inside the drill pipe.

7. The sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 6, characterized in that, The inner wall of the rotating sleeve is provided with a groove, and the outer wall of the drill rod is provided with a protrusion. The groove and the protrusion are slidably engaged.

8. A sensing and detection device for geological landslide exploration based on DC resistivity method according to claim 6, characterized in that, The extension structure includes multiple sets of extension members disposed inside the drill bit, and one end of each extension member is provided with a second convex shaft. The extension structure also includes a rotating rod coaxially arranged with the drill rod. One end of the rotating rod is provided with multiple sets of drive grooves, and the end of the drive groove away from the center of the rotating rod is provided with an arc-shaped groove.

9. A method for geological detection using a sensing and detection device based on DC resistivity method for exploring geological landslides as described in claim 1, characterized in that, Includes the following steps: Step 1: Place the base plate on the corresponding detection point and release the locking assembly to allow the support rod to move relative to the base plate; Step 2: Adjust the verticality of the support rod, and then lock the support rod using the locking assembly; Step 3: Control the movement of the screwing component so that the screwing structure first screws into the soil, and then control the movement of the extension structure to lock the screwing structure. Step 4: Adjust the probe protrusion to the ball head according to the testing requirements, until the probe is inserted into the soil to the predetermined depth.

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