Sensor mounting device suitable for drill hole semi-suspended state and mounting method of sensor mounting device

Abstract

The invention discloses a sensor mounting device suitable for a semi-suspended state of a drill hole and a mounting method thereof, belongs to the technical field of geotechnical engineering monitoring, and aims to solve the problem that when an existing sensor mounting device is in a semi-suspended state in a drill hole channel, the existing sensor mounting device cannot be in stable contact with the drill hole due to lack of enough acting force. By pulling the sensor data transmission line, the driving rod extrudes the propelling device, so that the resistance increasing sheet extends outwards along the preset hole channel of the sleeve to be in contact with the hole wall, the friction force is increased, and the device is ensured not to slide; meanwhile, the driving rod drives the rotating inner cylinder to rotate, and the blade extrudes the contact arm rod to extend out through rolling of the ball, so that the sensor device is stably contacted with the hole wall; the installation device and method are suitable for micro-seismic sensors and can be expanded to acoustic emission sensors, displacement sensors, electromagnetic radiation sensors and the like, the installation stability and the monitoring accuracy of the sensors in the drilling hole semi-suspended state are effectively improved, and more reliable technical support is provided for geotechnical engineering monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering monitoring, and in particular to a sensor installation device suitable for a semi-suspended state of a borehole and an installation method thereof. Background Art

[0002] In the field of geotechnical engineering monitoring technology, microseismic monitoring technology, as an important monitoring method, has been widely used in engineering practice in recent years. For example, microseismic monitoring technology has played a key role in large-scale water conservancy projects such as the Baihetan Hydropower Station, Jinping II Hydropower Station, and the Han-Wei River Diversion Project. However, the implementation effect of microseismic monitoring technology depends to a large extent on the accuracy of the installation location and installation method of the microseismic sensor.

[0003] In practical applications, in order to reduce the impact of background noise, it is usually required that the length of the borehole where the microseismic monitoring sensor is installed exceeds 2m, and the microseismic sensor is fixed at the bottom of the borehole. Through the stable contact between the installation device and the borehole, the sensor can receive microseismic signals more effectively. However, due to the complicated construction process, the drilling depth is often difficult to control accurately and may far exceed the preset depth of 2m. In this case, the traditional installation method cannot fix the sensor at the bottom of the hole, resulting in poor monitoring effect.

[0004] In order to solve the above problems, some installation devices and methods of microseismic sensors have emerged in recent years. For example, CN113376685B discloses a self-installing and self-recovering microseismic sensor device, which gets rid of the reinforcement of the anchoring agent through an elastic device, but it relies on structures such as a fixing sleeve and an anchoring agent container during the installation process, and needs to use an anchoring agent to tightly fit the sensor to the hole wall; although this method can achieve the fixation of the sensor, the installation process is relatively complicated, and it is necessary to prepare consumables such as anchoring agents, and when the sensor needs to be moved or recovered, the operation is relatively cumbersome. In addition, the use of anchoring agents may also cause certain damage to the borehole wall, affecting the monitoring effect of the sensor.

[0005] For example, CN106772564B discloses a microseismic monitoring sensor installation device and installation method, which realizes stable installation and convenient recovery of the sensor through an elastic device. However, this method may have certain limitations when dealing with complex geological conditions. For example, when the borehole wall is irregular or the rock hardness is high, the elastic film may not be able to achieve close contact with the borehole wall, thereby affecting the monitoring accuracy and stability of the sensor. In addition, although this method realizes self-installation and self-recovery of the sensor, in actual applications, additional operating tools or equipment may be required to assist in completing the installation and recovery process.

[0006] Although the above technology has solved some problems in the installation process of microseismic sensors to a certain extent, there are still some technical defects and shortcomings in practical applications; especially when the sensor needs to be installed at a certain position in the borehole for monitoring, since the sensor device is in a semi-suspended state in the hole and lacks sufficient force, the existing installation device often cannot achieve stable contact between the sensor and the borehole; this unstable contact state will not only affect the monitoring accuracy of the sensor, but may also cause the sensor to be displaced or damaged during the monitoring process, thereby affecting the accuracy and reliability of the monitoring results.

[0007] Therefore, in response to the above problems, it is necessary to provide a microseismic sensor installation device and method suitable for installation in a semi-suspended state in a borehole, so as to solve the problem that the existing sensor installation device cannot maintain stable contact with the borehole and improve the implementation effect of microseismic monitoring technology. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a sensor installation device and an installation method suitable for a semi-suspended state of a borehole, so as to solve the technical problem in the field of geotechnical engineering monitoring technology, especially in microseismic monitoring technology, that the sensor cannot be in stable contact with the borehole when installed in a semi-suspended state.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is: a sensor installation device suitable for a semi-suspended state of drilling, including a driving rod used to connect with the upper part of the sensor and drive it to rotate, and a propulsion device is provided on the driving rod, which is arranged in the upper sleeve, and is used to push the resistance increasing plate to extend outward when subjected to external force, and the resistance increasing plate is installed on the outside of the upper sleeve, and the upper sleeve is detachably connected, and a rotating inner cylinder is installed inside the lower sleeve, and the rotating inner cylinder is used to accommodate and fix the sensor, and a spring is installed on the propulsion device, and a contact arm rod is provided in the slideway of the lower sleeve, and the contact arm rod interacts with the blades of the rotating inner cylinder through a ball bearing, so that when the rotating inner cylinder rotates, the contact arm rod is squeezed and extends outward to stably contact the wall of the drill hole.

[0010] In a preferred embodiment, the propulsion device includes a compressible structure, and when subjected to an external force, the compressible structure is compressed and pushes the resistance-enhancing sheet to extend outward.

[0011] In a preferred solution, the outer surface of the resistance increasing sheet is provided with a structure for increasing friction, a rough surface or anti-slip texture.

[0012] In a preferred solution, there are multiple contact arm rods, which are evenly distributed in the slideway of the lower sleeve to enhance the contact stability with the borehole wall.

[0013] In a preferred embodiment, the slideway is a groove-shaped structure extending circumferentially along the lower sleeve, arranged inside the lower sleeve, and used to guide the contact arm rod to extend in the radial direction of the borehole. A guide slope is provided at the end of the slideway to guide the contact arm rod to contact the borehole wall when it is extended, and to reduce resistance during installation.

[0014] In a preferred embodiment, the device further comprises a hexagonal nut for connecting the driving rod and the sensor, and a structure for fixing and protecting the data transmission line to ensure that the data transmission line is not damaged during installation and use.

[0015] A sensor installation method suitable for a semi-suspended state of a drilling hole is to use any one of the sensor installation devices suitable for a semi-suspended state of a drilling hole as described above, and the method comprises the following steps: Step 1: Insert the sensor into the rotating inner cylinder, and screw the rotating inner cylinder into a certain position in the lower sleeve through the thread; Step 2: Connect the upper sleeve to the lower sleeve through the lower thread; Step 3: Place the propulsion device and the spring into the preset hole of the upper sleeve; Step 4: Insert the ball into the preset hole groove of the contact arm; Step 5: By pulling the sensor data transmission line, the driving rod squeezes the propulsion device, and the resistance increasing plate extends outward along the preset channel of the upper sleeve and contacts the hole wall; Step 6: Drive the driving rod to make the sensor rotate clockwise, driving the thread of the rotating inner cylinder to rotate along the preset thread of the lower sleeve, so that the blades of the rotating inner cylinder are extended outward by the rolling of the ball to squeeze the contact arm rod, thereby achieving stable contact between the sensor device and the hole wall; Step 7: After the resistance increasing sheet is extended and contacts the hole wall in Step 5, the rotation force of the driving rod is further adjusted to ensure that the threaded connection between the rotating inner cylinder and the lower sleeve is stable, while ensuring the stable contact between the contact arm rod and the hole wall.

[0016] In a preferred solution, the method includes, during the installation process, judging whether the microseismic sensor installation device is in stable contact with the borehole wall by observing the extension of the contact arm rod in the slideway, and making adjustments as needed.

[0017] In a preferred embodiment, the method further comprises the step of performing a functional test on the installation device and the sensor after the installation is completed to ensure that they operate normally.

[0018] The sensor installation device and installation method suitable for a semi-suspended state of a drilling hole provided by the present invention have the following beneficial effects: 1. The present invention solves the technical problem in the field of geotechnical engineering monitoring technology, especially in microseismic monitoring technology, that the existing sensor cannot be stably contacted with the borehole when installed in a semi-suspended state, and provides a new recyclable sensor installation device and method; 2. The design of the resistance increasing sheet of the present invention causes the propulsion device to be squeezed by pulling the sensor data transmission line, thereby causing the resistance increasing sheet to extend outward along the preset hole of the sleeve and contact the hole wall, thereby increasing the friction between the sheet and the hole wall, solving the problem of insufficient force of the sensor in a semi-suspended state; 3. The design of the contact arm and the ball in the present invention utilizes the rolling of the ball in the preset hole groove of the contact arm, and cooperates with the blades of the rotating inner cylinder to squeeze the contact arm, so that it extends outward along the hole of the lower sleeve, further enhancing the stable contact between the sensor device and the hole wall; 4. The installation device and method provided by the present invention effectively solve the problem that the existing sensor installation device cannot be in stable contact with the drill hole due to insufficient force when it is in a semi-suspended state in the drill hole, ensuring that the sensor can also be in stable contact with the drill hole in the semi-suspended state; 5. The present invention avoids the problem of the sensor sliding or falling off due to insufficient force in a semi-suspended state through the design of the resistance-increasing sheet and the contact arm, thereby improving the accuracy and reliability of monitoring; 6. The stable contact of the present invention ensures that the sensor can accurately receive microseismic signals without external interference, improves the accuracy and reliability of monitoring data, and provides strong technical support for geotechnical engineering monitoring; 7. The installation method of the present invention is relatively simple and easy to operate, which reduces the difficulty and cost of installation and improves work efficiency. At the same time, the installation method is also recyclable, which is convenient for the later maintenance and replacement of the sensor; 8. The invention has a wide range of applications, not only for the installation of microseismic sensors, but also for drilling, installing and recovering more extensive sensors such as acoustic emission sensors, displacement sensors and electromagnetic radiation sensors, and has high practical value and application prospects; 9. In practical applications, the present invention can be applied to various occasions where geotechnical engineering monitoring is required, such as hydropower stations, tunnels, mines, etc., to provide a strong guarantee for engineering safety. At the same time, the invention also helps to promote the further development of geotechnical engineering monitoring technology; 10. The invention not only solves the technical problem that the sensor cannot be in stable contact with the borehole when installed in a semi-suspended state, but also provides new ideas and methods for the development of geotechnical engineering monitoring technology, which is of great significance for promoting the progress and development of geotechnical engineering monitoring technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples: Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 An exploded view of the overall structure of the device of the present invention; Figure 3 It is a cross-sectional view of the overall structure of the device of the present invention; Figure 4 It is a structural schematic diagram of the contact arm rod of the present invention; Figure 5 It is a partial enlarged schematic diagram of the upper structure of the present invention; Figure 6 This is a schematic diagram of the driving rod structure of the present invention; In the figure: driving rod 1, lower sleeve 2, rotating inner cylinder 3, upper sleeve 4, resistance increasing plate 5, propulsion device 6, spring 7, ball 8, contact arm rod 9, slideway 201. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments: Example 1 like Figures 1 to 6 As shown, a sensor installation device suitable for a semi-suspended state of drilling comprises a driving rod 1 for connecting with the upper part of the sensor and driving it to rotate, a propulsion device 6 is arranged on the driving rod 1, which is arranged in the upper sleeve 4, and is used to push the resistance increasing sheet 5 to extend outward when subjected to external force, the resistance increasing sheet 5 is installed on the outside of the upper sleeve 4, the upper sleeve 4 is detachably connected to the lower sleeve 2 through a thread, a rotating inner cylinder 3 is installed inside the lower sleeve 2, the rotating inner cylinder 3 is used to accommodate and fix the sensor, a spring 7 is installed on the propulsion device 6, a contact arm rod 9 is arranged in the slideway 201 of the lower sleeve 2, the contact arm rod 9 interacts with the blades of the rotating inner cylinder 3 through a ball 8, so that when the rotating inner cylinder 3 rotates, the contact arm rod 9 is squeezed and extends outward to stably contact the wall of the drilling hole.

[0021] In this embodiment, the propulsion device 6 includes a compressible structure. When subjected to an external force, the compressible structure is compressed and pushes the resistance-enhancing sheet 5 to extend outward.

[0022] Furthermore, the outer surface of the resistance increasing sheet 5 is provided with a structure for increasing friction, a rough surface or anti-slip texture.

[0023] Furthermore, there are multiple contact arm rods 9 which are evenly distributed in the slideway 201 of the lower sleeve 2 to enhance the contact stability with the borehole wall.

[0024] Furthermore, the slideway 201 is arranged inside the lower sleeve 2 and is distributed in a spiral shape.

[0025] Furthermore, the device also includes a structure for fixing and protecting the data transmission line to ensure that the data transmission line is not damaged during installation and use.

[0026] When installing the sensor, the sensor data transmission line is pulled to make the driving rod 1 squeeze the propulsion device 6, and the resistance increasing plate 5 extends outward along the preset channel of the upper sleeve 4, contacts the hole wall and increases the friction force. Then the driving rod 1 is driven to make the sensor rotate clockwise, driving the thread of the rotating inner cylinder 3 to rotate along the preset thread channel of the lower sleeve 2, so that the blades of the rotating inner cylinder 3 are extended outward by the rolling squeezing of the contact arm rod 9 by the ball 8, thereby realizing stable contact between the sensor device and the hole wall.

[0027] Example 2 In another preferred embodiment, based on Embodiment 1, a sensor installation method suitable for a semi-suspended state of a drilling hole is to use any one of the sensor installation devices suitable for a semi-suspended state of a drilling hole as described above, and the method comprises the following steps: Step 1: Insert the sensor into the rotating inner cylinder 3, and screw the rotating inner cylinder 3 into a certain position in the lower sleeve 2 through the thread; Step 2: Connect the upper sleeve 4 to the lower sleeve 2 through the lower thread; Step 3: Place the propulsion device 6 and the spring 7 into the preset channel of the upper sleeve 4; Step 4: Insert the ball 8 into the preset hole groove of the contact arm rod 9; Step 5: By pulling the sensor data transmission line, the driving rod 1 squeezes the propulsion device 6, and the resistance increasing sheet 5 extends outward along the preset channel of the upper sleeve 4 and contacts the hole wall; Step 6: Drive the driving rod 1 to make the sensor rotate clockwise, driving the thread of the rotating inner cylinder 3 to rotate along the preset thread path of the lower sleeve 2, so that the blades of the rotating inner cylinder 3 are extended outward by the rolling and squeezing of the contact arm rod 9 by the ball 8, so as to achieve stable contact between the sensor device and the hole wall; Step 7: After the resistance increasing sheet 5 is extended and contacts the hole wall in Step 5, the rotation force of the driving rod 1 is further adjusted to ensure a firm threaded connection between the rotating inner cylinder 3 and the lower sleeve 2, while ensuring a stable contact between the contact arm rod 9 and the hole wall.

[0028] In this embodiment, the method includes, during the installation process, by observing the extension of the feeler arm 9 in the slideway 201, judging whether the microseismic sensor installation device is in stable contact with the borehole wall, and making adjustments as needed.

[0029] Furthermore, the method also includes the step of performing functional testing on the installation device and the sensor after the installation is completed to ensure that they work properly.

[0030] Example 3 In another preferred embodiment, based on embodiments 1 and 2, this embodiment will further explain the present invention in detail in combination with the drawings and embodiments.

[0031] A sensor installation device suitable for semi-suspended installation in a drilled hole, the structure of which is as follows: Figures 1 to 6 As shown, it includes a driving rod 1, a lower sleeve 2, a rotating inner cylinder 3, an upper sleeve 4, a resistance increasing plate 5, a propulsion device 6, a spring 7, a ball 8 and a contact arm rod 9.

[0032] The sensor is inserted into the lower rotating inner cylinder 3, and the rotating inner cylinder 3 is screwed into a certain position in the lower sleeve 2 through a thread. The upper sleeve 4 is connected to the lower sleeve 2 through a lower thread. The propulsion device 6 and the spring 7 are placed in the preset channel of the upper sleeve 4, and the ball 8 is embedded in the preset hole groove of the feeler arm rod 9. The feeler arm rod 9 can slide along the channel of the lower sleeve 2.

[0033] During installation, first, insert the lower part of the driving rod 1 into the hexagonal nut on the upper part of the sensor, and by pulling the data transmission line of the sensor, the driving rod 1 squeezes the propulsion device 6. At this time, the spring 7 is compressed, and the resistance increasing plate 5 extends outward along the preset channel of the upper sleeve 4 and contacts the wall of the drilled hole. By increasing the friction between the wall of the hole, the device has better stability during the installation process and is not easy to slide.

[0034] Next, the driving rod 1 is driven to rotate clockwise, driving the thread of the rotating inner cylinder 3 to rotate along the preset thread path of the lower sleeve 2. The blades of the rotating inner cylinder 3 squeeze the feeler arm rod 9 along the hole of the lower sleeve 2 through the rolling of the ball 8 until the feeler arm rod 9 is in stable contact with the wall of the drill hole, thereby further fixing the device.

[0035] After the installation is completed, the drive rod 1 is separated from the sensor, the lower ring of the drive rod is inserted into the propulsion device 6, and then the drive rod 1 is rotated counterclockwise to separate the upper sleeve 4 from the lower sleeve 2, completing the entire installation process. At this time, the sensor is in a semi-suspended state in the borehole, but due to the action of the resistance plate 5 and the contact arm rod 9, the device is in stable contact with the borehole wall, ensuring the stable reception of microseismic signals.

[0036] Example 4 In another preferred embodiment, based on Example 3, as a further optimization of Example 3, this embodiment provides a microseismic sensor installation device with adjustable resistance. Based on Example 3, the extension length of the resistance-enhancing sheet 5 can be controlled by adjusting the compression degree of the propulsion device 6. Specifically, an adjustment mechanism can be arranged inside the propulsion device 6. By adjusting the mechanism, the thrust of the propulsion device 6 on the resistance-enhancing sheet 5 can be changed, thereby adjusting the length of the resistance-enhancing sheet 5 extending out of the hole to adapt to the borehole walls of different diameters or different materials.

[0037] In addition, the number and distribution of the feeler arms 9 can also be adjusted as needed. For example, a plurality of feeler arms 9 can be evenly distributed around the rotating inner cylinder 3 to further increase the contact area and stability between the device and the borehole wall.

[0038] Compared with the closest prior art, the present invention has the following significant differences and innovations: Design of the resistance increasing plate 5: The present invention increases the friction between the device and the borehole wall by the contact between the resistance increasing plate 5 and the borehole wall, thereby solving the problem that the existing sensor installation device cannot make stable contact with the borehole in a semi-suspended state. This design not only improves the stability of the device, but also ensures the stable reception of microseismic signals.

[0039] Coordination between the contact arm 9 and the ball 8: the contact arm 9 extends outward along the drilled hole under the rolling action of the ball 8, contacts the hole wall and fixes the device. This design makes the extension of the contact arm 9 more stable and uniform, avoiding damage or instability caused by direct collision with the hole wall.

[0040] Adjustable resistance increase: The adjustable resistance increase design in Example 4 enables the present invention to adapt to borehole walls of different diameters or different materials, thereby improving the applicability and flexibility of the device.

[0041] In summary, the microseismic sensor installation device and installation method suitable for installation in a semi-suspended state of a borehole provided by the present invention have the advantages of simple structure, convenient operation, stability and reliability, and can be widely used in the field of geotechnical engineering monitoring.

[0042] In a preferred embodiment, the propulsion device 6 includes a compressible structure. When subjected to external force, the compressible structure is compressed and pushes the resistance-enhancing sheet 5 to extend outward. The above arrangement can effectively increase the friction between the propulsion device and the surrounding environment, thereby improving the overall stability and braking effect. At the same time, the compressible structure returns to its original state when not subjected to external force, and the resistance-enhancing sheet 5 is retracted, ensuring the smooth operation of the device under normal conditions.

[0043] In a preferred embodiment, the outer surface of the resistance increasing sheet 5 is provided with a structure for increasing friction, a rough surface or anti-slip texture; the above settings are intended to enhance the friction between the resistance increasing sheet 5 and the contact surface, effectively prevent sliding, ensure the stability and safety of the device during use, and further optimize the overall performance.

[0044] In the preferred solution, the number of the feeler arm rods 9 is multiple and evenly distributed in the slideway 201 of the lower sleeve 2 to enhance the contact stability with the borehole wall; the above arrangement can ensure that the feeler arm rods 9 are subjected to uniform force during the drilling process, avoiding damage caused by excessive force at a single point, while improving the stability and service life of the overall structure, providing reliable support for the drilling operation.

[0045] In the preferred solution, the slide 201 is arranged inside the lower sleeve 2 and is distributed in a spiral shape; the above arrangement allows the slider to gradually rise or fall along the spiral trajectory when sliding in the slide, thereby realizing the combination of linear motion and rotational motion, improving the functionality and flexibility of the equipment, while also optimizing space utilization and making the overall structure more compact.

[0046] In a preferred embodiment, the device also includes a structure for fixing and protecting the data transmission line to ensure that the data transmission line is not damaged during installation and use; the above arrangement effectively improves the stability and security of data transmission. At the same time, the structure facilitates the maintenance and management of the data transmission line, reduces the system downtime caused by line failures, and improves the operating efficiency of the overall equipment.

[0047] In the preferred scheme, the method includes, during the installation process, by observing the extension of the feeler arm rod 9 in the slide 201, judging whether the microseismic sensor installation device is in stable contact with the borehole wall, and adjusting it as needed; the above settings can ensure the accuracy and stability of the position of the microseismic sensor in the hole, thereby improving the accuracy and reliability of data acquisition. At the same time, the scheme also includes a real-time monitoring and feedback mechanism for sensor data, so as to promptly detect and correct any possible deviations.

[0048] In the preferred solution, the method also includes the step of performing functional testing on the installation device and sensor after the installation is completed to ensure their normal operation; the above settings can also effectively monitor and feedback data to promptly detect potential problems. In addition, the solution also covers regular maintenance and inspection links to ensure long-term stable operation, reduce failure rates, and improve overall operational efficiency.

[0049] In summary, in the field of geotechnical engineering monitoring technology, especially in microseismic monitoring technology, the present invention proposes a sensor installation device and an installation method suitable for a semi-suspended state of a borehole, which effectively solves the technical problem that the sensor cannot be stably contacted with the borehole when installed in a semi-suspended state; compared with the prior art, although a variety of microseismic sensor installation devices and methods have been proposed, when the sensor is in a semi-suspended state in the borehole channel, due to insufficient force, the existing devices often find it difficult to ensure stable contact with the borehole wall, thereby affecting the accuracy and reliability of the monitoring data; in response to this situation, the present invention realizes the stable installation of the sensor in a semi-suspended state through a unique design of a resistance-increasing sheet 5 and the cooperation of a contact arm rod 9 and a ball 8; the resistance-increasing sheet 5 drives the push rod 9 by pulling the sensor data transmission line. The device is pushed into the hole so that it extends outward along the preset hole of the sleeve, contacts the hole wall and increases the friction force, thereby stabilizing the sensor device; at the same time, the feeler arm rod 9 utilizes the rolling of the ball 8 in the preset hole groove, and cooperates with the blade extrusion and extension of the rotating inner cylinder 3, which further enhances the stable contact between the device and the hole wall; this innovative design not only overcomes the limitations of the prior art, but also combines a detailed installation method, including the use of the driving rod 1, the threaded rotation of the rotating inner cylinder 3 and other steps, to ensure that the device can be correctly and stably installed in the borehole; in addition, the invention has a wide range of applications, not only suitable for microseismic sensors, but also can be extended to acoustic emission sensors, displacement sensors and electromagnetic radiation sensors, etc., showing its high creativity and practicality, and providing new ideas and methods for the development of geotechnical engineering monitoring technology.

Claims

1. A sensor installation device suitable for a semi-suspended state of a drilling hole, characterized in that: The invention comprises a driving rod (1) for connecting with the upper part of the sensor and driving the sensor to rotate. The driving rod (1) is provided with a propulsion device (6) which is arranged in the upper sleeve (4) and is used to push the resistance increasing plate (5) to extend outward when subjected to external force. The resistance increasing plate (5) is installed outside the upper sleeve (4). The upper sleeve (4) is detachably connected to the lower sleeve (2) through a thread. A rotating inner cylinder (3) is installed inside the lower sleeve (2). The rotating inner cylinder (3) is used to accommodate and fix the sensor. A spring (7) is installed on the propulsion device (6). A contact arm rod (9) is provided in the slideway (201) of the lower sleeve (2). The contact arm rod (9) interacts with the blades of the rotating inner cylinder (3) through a ball (8), so that when the rotating inner cylinder (3) rotates, the contact arm rod (9) is squeezed and extends outward to stably contact the wall of the drill hole.

2. The sensor installation device suitable for drilling semi-suspended state according to claim 1 is characterized in that: The propulsion device (6) comprises a compressible structure, and when subjected to an external force, the compressible structure is compressed and pushes the resistance-enhancing sheet (5) to extend outward.

3. The sensor installation device suitable for drilling semi-suspended state according to claim 1 is characterized in that: The outer surface of the resistance increasing sheet (5) is provided with a structure for increasing friction, a rough surface or anti-slip textures.

4. The sensor installation device suitable for drilling semi-suspended state according to claim 1, characterized in that: The number of the contact arm rods (9) is multiple and evenly distributed in the slideway (201) of the lower sleeve (2) to enhance the contact stability with the borehole wall.

5. The sensor installation device suitable for drilling in a semi-suspended state according to claim 1, characterized in that: The slideway (201) is a groove-shaped structure extending along the circumference of the lower sleeve (2), and is arranged inside the lower sleeve (2) and is used to guide the feeler arm rod (9) to extend in the radial direction of the borehole. A guide slope is provided at the end of the slideway (201) and is used to guide the feeler arm rod (9) to contact the borehole wall when extending, thereby reducing resistance during installation.

6. The sensor installation device suitable for drilling semi-suspended state according to claim 1, characterized in that: The device also includes a hexagonal nut for connecting the drive rod (1) and the sensor, and a structure for fixing and protecting the data transmission line to ensure that the data transmission line is not damaged during installation and use.

7. A sensor installation method suitable for a semi-suspended state of a drilling hole, characterized in that: The method is to use the sensor installation device suitable for the semi-suspended state of drilling according to any one of claims 1 to 6, and the method comprises the following steps: Step 1: Insert the sensor into the rotating inner cylinder (3), and screw the rotating inner cylinder (3) into a certain position in the lower sleeve (2) through the thread; Step 2: Connect the upper sleeve (4) to the lower sleeve (2) through the lower thread; Step 3: Place the propulsion device (6) and the spring (7) into the preset hole of the upper sleeve (4); Step 4: Insert the ball (8) into the preset hole groove of the contact arm rod (9); Step 5: By pulling the sensor data transmission line, the driving rod (1) squeezes the propulsion device (6), and the resistance increasing plate (5) extends outward along the preset hole of the upper sleeve (4) and contacts the hole wall; Step 6: Drive the driving rod (1) to rotate the sensor clockwise, driving the thread of the rotating inner cylinder (3) to rotate along the preset thread path of the lower sleeve (2), so that the blades of the rotating inner cylinder (3) are extended outward by the rolling and squeezing of the contact arm rod (9) by the ball (8), thereby achieving stable contact between the sensor device and the hole wall; Step 7: After installation, separate the drive rod (1) from the sensor and rotate the drive rod (1) counterclockwise to separate the upper sleeve (4) from the lower sleeve (2).

8. The sensor installation method suitable for a semi-suspended state of a drilling hole according to claim 7, characterized in that: In the step 5, after the resistance increasing plate (5) is extended and contacts the hole wall, the rotation force of the driving rod (1) is further adjusted to ensure that the threaded connection between the rotating inner cylinder (3) and the lower sleeve (2) is stable, while ensuring that the contact arm rod (9) is in stable contact with the hole wall.

9. The sensor installation method suitable for a semi-suspended state of a drilling hole according to claim 8, characterized in that: The method comprises, during the installation process, judging whether the microseismic sensor installation device is in stable contact with the borehole wall by observing the extension of the contact arm rod (9) in the slideway (201), and making adjustments as needed.

10. The sensor installation method suitable for a semi-suspended state of a drilling hole according to claim 9, characterized in that: The method further comprises the step of performing a functional test on the installation device and the sensor after the installation is completed to ensure that they are functioning properly.

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