A precisely installable three-component microseismic sensor and its application method

Abstract

This invention discloses a precisely installable three-component microseismic sensor. The sensor includes a sensor system and an auxiliary installation system. The sensor system comprises a sensor housing, an internal fixing plate, a gyroscope chip, an internal plastic fixing component, and three sensor cores. The sensor housing has an internal accommodating space, within which the internal fixing plate, gyroscope chip, internal plastic fixing component, and three sensor cores are all disposed. The auxiliary installation system is mounted on the sensor housing. This invention also discloses a method for using the precisely installable three-component microseismic sensor. Compared with existing technologies, the precisely installable three-component microseismic sensor of this invention can accurately determine the Euler angles of the three-component microseismic sensor relative to the geodetic coordinate system through the gyroscope chip, ensuring the accuracy of subsequent positioning and other analysis results.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of microseismic monitoring, in particular to a three-component microseismic sensor which can be accurately installed and a method for using the same. BACKGROUND

[0002] In some plateau areas, the geological structure is complex, and the rock types are diverse, including metamorphic rock, igneous rock and sedimentary rock. Due to the complexity of the geological structure, the stability of the slope is affected by many factors, such as faults, folds, fractures, etc. Many slopes are steep, especially in mountainous and hilly areas. These steep slopes are prone to landslides, collapses and other geological disasters, causing economic losses. In order to effectively and reasonably prevent slope landslides, an economical and effective microseismic monitoring and early warning method must be found.

[0003] Microseismic monitoring technology can achieve relatively accurate rock burst early warning by monitoring the elastic waves released by rock rupture in surrounding rock and analyzing the space-time, energy level and other information of the elastic waves. However, the common microseismic monitoring technology can locate the rock rupture vibration signal relying on four microseismic sensors monitoring the same rock rupture vibration signal. Therefore, in the monitoring of some plateau rock slopes, in order to ensure that four microseismic sensors can monitor the same rock rupture vibration signal, the sensors must be relatively densely buried. This burying scheme has high economic cost and is not conducive to large-scale burying monitoring. Therefore, it is urgent to find a single-sensor positioning method, which can locate the microseismic source with a single sensor, thereby reducing the cost of burying the microseismic monitoring system in the rock slope of the Yunnan-Guizhou Plateau. However, in order to take advantage of the three-component of the three-component microseismic sensor and perform single-sensor positioning and other analyses, it is essential to determine the Euler angle of the three-component microseismic sensor. The existing installation technology and method can only measure the inclination and depth of the hole, but the rotation of the three-component microseismic sensor in the hole is unknown.

[0004] Therefore, how to provide a three-component microseismic sensor which can be accurately installed, so as to accurately determine the Euler angle of the three-component microseismic sensor relative to the coordinate system of the earth, and ensure the accuracy of subsequent positioning and other analysis results, is a technical problem that technicians in the field need to solve. SUMMARY

[0005] In view of the problems existing in the prior art, the technical problem to be solved by the present application is to provide a three-component microseismic sensor which can be accurately installed, so as to accurately determine the Euler angle of the three-component microseismic sensor, and ensure the accuracy of subsequent positioning and other analysis results.

[0006] In order to achieve the above object, the application provides a three-component microseismic sensor which can be precisely installed, comprising a sensor system and an auxiliary installation system.

[0007] In the first aspect, the sensor shell comprises a sensor sleeve, the accommodation space is located inside the sensor sleeve, one end of the sensor sleeve is provided with a sleeve opening, the sleeve opening is communicated with the accommodation space, a sensor cover head is connected with the sleeve opening in a closed manner, two outwardly convex metal sheets are symmetrically arranged on the outer side wall of the sensor cover head, one end of the auxiliary installation system is fixedly connected with the other end of the sensor sleeve, the other end of the auxiliary installation system is clamped with the two metal sheets, and the sensor internal fixing sheet is located between the sensor internal plastic fixing piece and the sensor cover head.

[0008] In the first aspect, three cylindrical holes are formed in the sensor internal plastic fixing piece, and the three cylindrical holes are located in the up-down direction, left-right direction and front-rear direction of the sensor internal plastic fixing piece, respectively.

[0009] In the first aspect, the three sensor cores and the three cylindrical holes are one-to-one corresponding, and each sensor core is arranged in a corresponding cylindrical hole.

[0010] In the first aspect, three chip fixing holes are formed in the sensor internal fixing sheet, and the gyroscope chip is fixed on the three chip fixing holes.

[0011] In the first aspect, the auxiliary installation system comprises: a bottom fixing part, a middle part of the bottom fixing part is fixedly connected with another end of the sensor sleeve; two compression springs, one end of one of the compression springs is fixedly connected with an inner side of one end of the bottom fixing part, and the other end of the other compression spring is fixedly connected with an inner side of the other end of the bottom fixing part; two rock wall coupling mechanisms, one end of one of the rock wall coupling mechanisms is fixedly connected with the other end of one of the compression springs, and one end of the other rock wall coupling mechanism is fixedly connected with the other end of the other compression spring; and a top fixing part, an inner side of one end of the top fixing part is fixedly connected with the other end of one of the rock wall coupling mechanisms, and an inner side of the other end of the top fixing part is fixedly connected with the other end of the other rock wall coupling mechanism.

[0012] In the first aspect, two clamping pieces are arranged on the outer sides of the two ends of the top fixing part, one of the clamping pieces corresponds to one of the metal sheets, and the two metal sheets are located between the two clamping pieces.

[0013] In the first aspect, the rock wall coupling mechanism comprises: a first supporting rod, one end of the first supporting rod is fixedly connected with the other end of one of the compression springs; a second supporting rod, one end of the second supporting rod is movably connected with the other end of the first supporting rod, and the other end of the second supporting rod is fixedly connected with an inner side of one end of the top fixing part; and an arc-shaped plate, the arc-shaped plate is fixed at the connection between the first supporting rod and the second supporting rod, and an arc-shaped inner side of the arc-shaped plate faces the connection.

[0014] The application also provides a use method of the three-component microseismic sensor which can be precisely installed, and the use method is used for the three-component microseismic sensor which can be precisely installed, and the use method comprises the following steps: fixing the auxiliary installation system on the sensor system to complete the combination of the system and the auxiliary installation system, and obtaining the three-component microseismic sensor; aligning the monitoring directions of the three sensor cores with the east, north and up respectively, starting the gyroscope chip, and recording the Euler angle displayed by the gyroscope chip at this time as 0, 0 and 0; slowly putting the three-component microseismic sensor into the drill hole, lowering to the installation position, then grouting into the drill hole, reading the Euler angle reading of the gyroscope chip after the grouting is stable, and performing coordinate conversion on the spatial coordinate point of the three-component microseismic sensor based on the read Euler angle reading of the gyroscope chip.

[0015] In the second aspect, the coordinate conversion of the spatial coordinate point of the three-component microseismic sensor based on the reading of the Euler angle reading of the gyroscope chip specifically comprises: the initial coordinate system of the three-component microseismic sensor is the same as the geodetic coordinate system, the rotation sequence of the gyroscope chip is X, Y and Z, the sensor coordinate system of the three-component microseismic sensor is determined according to the rotation sequence and the Euler angle, and the relationship between the sensor coordinate system and the geodetic coordinate system is obtained, so as to convert the spatial coordinate point between the geodetic coordinate system and the sensor coordinate system.

[0016] Beneficial effects:

[0017] The application provides a three-component microseismic sensor which can be precisely installed, and the three-component microseismic sensor is composed of a sensor system carrying a gyroscope chip and an auxiliary installation system, a sensor shell of the sensor system is used for protecting a sensor core and the gyroscope chip in the interior; the obtained three-component microseismic sensor does not rotate in the process of entering a borehole by fixing the auxiliary installation system on the sensor system, so that the Euler angle of the three-component microseismic sensor relative to the geodetic coordinate system can be accurately determined by the gyroscope chip, and the accuracy of subsequent positioning and other analysis results is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is an internal front view structural schematic diagram of a three-component microseismic sensor according to the present application;

[0020] Figure 2 is an internal front view structural schematic diagram of a sensor system according to the present application;

[0021] Figure 3 is a structural schematic diagram of an auxiliary installation system according to the present application;

[0022] Figure 4 is a structural schematic diagram of a three-component microseismic sensor entering a borehole according to the present application;

[0023] Figure 5 is a structural schematic diagram of a three-component microseismic sensor after entering a borehole according to the present application;

[0024] Figure 6 is a conversion schematic diagram of a geodetic coordinate system and a three-component microseismic sensor coordinate system according to the present application.

[0025] Figure label:

[0026] 1. Sensor system; 11. Sensor housing; 111. Sensor sleeve; 112. Sensor cover; 113. Metal sheet; 12. Internal fixing piece of sensor; 13. Gyroscope chip; 14. Internal plastic fixing piece of sensor; 15. Sensor core;

[0027] 2. Auxiliary installation system; 21. Bottom fixing component; 22. Compression spring; 23. Rock wall coupling mechanism; 231. First support rod; 232. Second support rod; 233. Arc plate; 24. Top fixing component; 25. Clip-on component; 26. Bolt;

[0028] 3. Drilling. Detailed Implementation

[0029] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this specification are within the scope of protection of this invention.

[0030] Example 1

[0031] like Figures 1-5 As shown, this embodiment provides a precisely installable three-component micro-vibration sensor. The three-component micro-vibration sensor includes: a sensor system 1, which includes a sensor housing 11, an internal sensor fixing plate 12, a gyroscope chip 13, an internal sensor plastic fixing component 14, and three sensor cores 15. The sensor housing 11 has an accommodating space inside, and the internal sensor fixing plate 12, the gyroscope chip 13, the internal sensor plastic fixing component 14, and the three sensor cores 15 are all disposed within the accommodating space. The gyroscope chip 13 is disposed on the internal sensor fixing plate 12. The internal sensor fixing plate 12 is disposed between the internal sensor plastic fixing component 14 and the sensor housing 11. The three sensor cores 15 are all disposed within the internal sensor plastic fixing component 14. An auxiliary installation system 2 is disposed on the sensor housing 11.

[0032] This invention provides a precisely installable three-component microseismic sensor, which consists of a sensor system 1 equipped with a gyroscope chip 13 and an auxiliary installation system 2. The sensor housing 11 of the sensor system 1 is used to protect the internal sensor core 15 and gyroscope chip 13. By fixing the auxiliary installation system 2 to the sensor system 1, the obtained three-component microseismic sensor does not rotate during the process of entering the borehole 3, and the Euler angle of the three-component microseismic sensor relative to the geodetic coordinate system can be accurately determined by the gyroscope chip 13, which provides a guarantee for the accuracy of subsequent positioning and other analysis results.

[0033] In some possible implementations, the sensor housing 11 includes: a sensor sleeve 111, the accommodating space being located inside the sensor sleeve 111, one end of the sensor sleeve 111 having a sleeve opening communicating with the accommodating space; a sensor cover 112, the connecting end of the sensor cover 112 being closedly connected to the sleeve opening, and two symmetrically protruding metal pieces 113 being arranged on the outer side wall of the sensor cover 112; wherein, one end of the auxiliary mounting system 2 is fixedly connected to the other end of the sensor sleeve 111, and the other end of the auxiliary mounting system 2 is engaged with the two metal pieces 113; and an internal sensor fixing piece 12 is located between the internal plastic fixing piece 14 and the sensor cover 112.

[0034] Specifically, the sensor sleeve 111 is a cylindrical structure closed at one end, with the sleeve opening being its open end. It is connected to the sleeve opening by the sensor cover 112, making the accommodating space a closed space, which can prevent grout from entering the accommodating space during the grouting process and affecting the test results. Two protruding metal pieces 113 are located between the two snap-fit ​​pieces 25 of the auxiliary installation system 2. The two protruding metal pieces 113 are respectively embedded in the corresponding snap-fit ​​piece 25, so that the other end of the auxiliary installation system 2 is snapped to the sensor system 1. One end of the auxiliary installation system 2 is fixedly connected to the sensor system 1 by bolts 26, so that the auxiliary installation system 2 is fixed on the sensor system 1.

[0035] In some possible implementations, the internal plastic fixing part 14 of the sensor has three cylindrical holes, which are respectively located in the vertical, horizontal and back directions of the internal plastic fixing part 14 of the sensor; the three sensor cores 15 are distributed in a one-to-one correspondence with the three cylindrical holes, and each sensor core 15 is disposed in a corresponding cylindrical hole.

[0036] Specifically, the internal plastic fastener 14 of the sensor is fixedly installed in the accommodating space. The three cylindrical holes opened therein are used to fix the sensor core 15 and help the vibration to be transmitted from the sensor sleeve 111 to the sensor core 15. When the sensor core 15 receives the vibration signal, the sensor core 15 converts the vibration signal into an electrical signal and feeds it back to the acquisition device. The acquisition device is an external device of the three-component micro-vibration sensor of the present invention that can be precisely installed. It is connected to the sensor core 15 and the gyroscope chip 13 respectively, and is used to receive the information fed back by the sensor core 15 and the gyroscope chip 13.

[0037] In some possible implementations, the sensor internal fixing plate 12 has three chip fixing holes, and the gyroscope chip 13 is fixed in the three chip fixing holes.

[0038] Specifically, the gyroscope chip 13 is fixed on the internal fixing plate 12 of the sensor and is used to calculate the Euler angle of the three-dimensional micro-vibration sensor of the present invention.

[0039] In some possible implementations, the auxiliary installation system 2 includes: a bottom fixing member 21, the middle of which is fixedly connected to the bottom of the other end of the sensor sleeve 111; two compression springs 22, one end of which is fixedly connected to the inner side of one end of the bottom fixing member 21, and the other end of which is fixedly connected to the inner side of the other end of the bottom fixing member 21; two rock wall coupling mechanisms 23, one end of which is fixedly connected to the other end of one compression spring 22, and the other end of which is fixedly connected to the other end of the other compression spring 22; and a top fixing member 24, the inner side of one end of which is fixedly connected to the other end of one rock wall coupling mechanism 23, and the inner side of the other end of which is fixedly connected to the other end of the other rock wall coupling mechanism 23. The top fixing member 24 has two snap-fit ​​members 25 on its outer sides at both ends. Each snap-fit ​​member 25 is distributed one-to-one with each metal piece 113. The two metal pieces 113 are located between the two snap-fit ​​members 25, and each snap-fit ​​member 25 is snapped with a corresponding metal piece 113. The rock wall coupling mechanism 23 includes: a first support rod 231, one end of which is fixedly connected to the other end of a corresponding compression spring 22; a second support rod 232, one end of which is movably connected to the other end of the first support rod 231, and the other end of which is fixedly connected to the inner side of the corresponding end of the top fixing member 24; and an arc plate 233, which is fixed at the connection between the first support rod 231 and the second support rod 232, with the arc-shaped inner side of the arc plate 233 facing the connection.

[0040] Specifically, the bottom fixing member 21 is fixedly installed on the sensor sleeve 111 by bolts 26; the compression spring 22 is a compression spring, and the top fixing member 21 compresses the compression spring 22 to make the two protruding metal pieces 113 on the sensor cover 112 embed into the gap of the snap-fit ​​member 25, and then releases the compression spring 22. The pressure provided by the compression spring 22 fixes the two protruding metal pieces 113 to the snap-fit ​​member 25, so that the top fixing member 24 is fixed on the sensor system 1; the first support rod 231 and the second support rod 232 on the rock wall coupling mechanism 23 are movably connected. When the three-component micro-vibration sensor is slowly inserted into the borehole 3 from the sensor sleeve 111, the rock wall coupling mechanism 23 is subjected to the pressure of the rock wall inside the borehole 3, causing the first support rod 231 to... The connection between the second support rod 232 and the sensor sleeve 111 is compressed, causing the second support rod 232 to slide along the sensor sleeve 111 toward the sensor cover 112. Since the top fixing piece 24 is engaged with the two protruding metal pieces 113 on the sensor cover 112, the continued movement of the second support rod 232 is restricted. As a result, the compression movement of the compression spring 22 replaces the continued movement of the second support rod 232. This results in a certain pressure and friction between the rock wall coupling mechanism 23 and the rock wall inside the borehole 3. When the three-component micro-vibration sensor is slowly placed in, due to the slow placement speed and the friction between the three-component micro-vibration sensor and the rock wall inside the borehole 3, the three-component micro-vibration sensor hardly rotates during the lowering process, making the test results more accurate.

[0041] Example 2

[0042] like Figures 1-6As shown, Embodiment 2 of the present invention provides a method for using a precisely installable three-component microseismic sensor, which is used in the application of the precisely installable three-component microseismic sensor described in Embodiment 1. The method includes: fixing an auxiliary installation system onto a sensor system to complete the combination of the sensor system and the auxiliary installation system, thus obtaining a three-component microseismic sensor; aligning the monitoring directions of the three sensor cores with due east, due north, and due upward, respectively; activating the gyroscope chip and recording the Euler angles displayed by the gyroscope chip as 0,0,0; slowly placing the three-component microseismic sensor into the borehole and lowering it to the installation position; then injecting grout into the borehole; and after the grouting has stabilized, reading the gyroscope chip data. The Euler angle readings of the gyroscope chip are used to transform the spatial coordinates of the three-component microseismic sensor. Specifically, this transformation involves: the initial coordinate system of the three-component microseismic sensor being the same as the geodetic coordinate system; the rotation sequence of the gyroscope chip being X, Y, Z; determining the sensor coordinate system of the three-component microseismic sensor based on the rotation sequence and the Euler angles; obtaining the relationship between the sensor coordinate system and the geodetic coordinate system; and then transforming any spatial coordinate point between the geodetic coordinate system and the sensor coordinate system.

[0043] Specifically, r stands for roll, p for pitch, and y for yaw. Roll, pitch, and yaw are all Euler angles output by gyroscope chip 13. Figure 6 In the diagram, E, N, and D represent the monitoring directions of the three sensor cores 15 when the three-component microseismic sensor is placed in the borehole: due east, due north, and due upward, respectively, which are the geodetic coordinate system. At this time, the Euler angle monitored by the gyroscope chip is 0.0.0. V1, V3, and V2 represent the coordinate system directions after the Euler angle changes recorded by the gyroscope chip 13 after grouting stabilization, which are the sensor coordinate system. The three-component microseismic sensor rotates almost without rotation during its lowering to the expected position within the borehole 3, making the measured Euler angles more accurate. The obtained sensor coordinate system is more accurate. By testing the Euler angles of the three-component microseismic sensor before it enters the borehole 3 and after it is lowered to the expected installation position and stabilized by grouting, a new coordinate system, namely the sensor coordinate system, is obtained. The relationship between the sensor coordinate system and the geodetic coordinate system is obtained, thereby allowing the transformation of any spatial coordinate point between the geodetic coordinate system and the sensor coordinate system. The spatial coordinate points of the seismic source can also be transformed between the geodetic coordinate system and the sensor coordinate system. For example, assuming the spatial coordinates of the three-component microseismic sensor in the geodetic coordinate system are... The spatial coordinates of the three-component micro-vibration sensor in the sensor coordinate system are: The conversion formula is: ;

[0044] ;

[0045] ;

[0046] ;

[0047] Wherein, the M x M y M z The rotation matrix is ​​defined as r, p, and y, which are all Euler angles output by the gyroscope chip. As can be seen, this invention solves the problem of determining the Euler angles of the sensor itself after grouting, and provides a guarantee for the accuracy of subsequent positioning and other analysis results, thus having good practicality.

[0048] It should be noted that the method of using a precisely installable three-component microseismic sensor in this second embodiment is used in the same way as the precisely installable three-component microseismic sensor described in the first embodiment. Therefore, the performance principle of the precisely installable three-component microseismic sensor will not be repeated here, and the undescribed parts can be referred to the first embodiment.

[0049] In summary, the three-component microseismic sensor of the present invention, which can be precisely installed, has the following advantages: 1. The three-component microseismic sensor of the present invention is easy to operate, has a simple structure, and can achieve precise installation, thus possessing excellent practicality; 2. The three-component microseismic sensor of the present invention hardly rotates during its movement from below to the expected position in the borehole, making the monitoring of its Euler angle relative to the geodetic coordinate system more accurate after grouting stabilization; 3. The three-component microseismic sensor of the present invention can automatically calculate its Euler angle relative to the geodetic coordinate system after grouting stabilization, accurately determining the sensor coordinate system, solving the problem of difficulty in determining the sensor's Euler angle after grouting, and providing assurance for the accuracy of subsequent positioning and other analysis results.

[0050] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A method of using a precisely installable three-component microseismic sensor, characterized in that, The use method adopts a precisely installed three-component microseismic sensor, and the three-component microseismic sensor comprises: A sensor system (1) comprises a sensor shell (11), a sensor inner fixing plate (12), a gyroscope chip (13), a sensor inner plastic fixing piece (14) and three sensor cores (15), the sensor shell (11) has a containing space inside, the sensor inner fixing plate (12), the gyroscope chip (13), the sensor inner plastic fixing piece (14) and the three sensor cores (15) are arranged in the containing space; the gyroscope chip (13) is arranged on the sensor inner fixing plate (12); the sensor inner fixing plate (12) is arranged between the sensor inner plastic fixing piece (14) and the sensor shell (11); the three sensor cores (15) are arranged in the sensor inner plastic fixing piece (14); three cylindrical holes are formed in the sensor inner plastic fixing piece (14), and the three cylindrical holes are located in the up-down direction, the left-right direction and the front-rear direction of the sensor inner plastic fixing piece (14) respectively; the three sensor cores (15) are distributed in one-to-one correspondence with the three cylindrical holes, and each sensor core (15) is arranged in a corresponding cylindrical hole; The sensor shell (11) comprises a sensor sleeve (111), the containing space is located inside the sensor sleeve (111), one end of the sensor sleeve (111) is provided with a sleeve opening, the sleeve opening is communicated with the containing space, and a sensor cover head (112) is arranged on the sensor sleeve (111); the connecting end of the sensor cover head (112) is in closed connection with the sleeve opening, and two outwardly protruding metal sheets (113) are symmetrically arranged on the outer side wall of the sensor cover head (112); one end of an auxiliary mounting system (2) is fixedly connected with the other end of the sensor sleeve (111), the other end of the auxiliary mounting system (2) is clamped with the two metal sheets (113), and the sensor inner fixing plate (12) is located between the sensor inner plastic fixing piece (14) and the sensor cover head (112). The auxiliary mounting system (2) is arranged on the sensor shell (11); the auxiliary mounting system (2) comprises: a bottom fixing part (21), the middle part of the bottom fixing part (21) is fixedly connected with the other end of the sensor sleeve (111); two compression springs (22), one end of one of the compression springs (22) is fixedly connected with the inner side of one end of the bottom fixing part (21), and the other end of the other compression spring (22) is fixedly connected with the inner side of the other end of the bottom fixing part (21); two rock wall coupling mechanisms (23), one end of one of the rock wall coupling mechanisms (23) is fixedly connected with the other end of one of the compression springs (22), and one end of the other rock wall coupling mechanism (23) is fixedly connected with the other end of the other compression spring (22); a top fixing part (24), the inner side of one end of the top fixing part (24) is fixedly connected with the other end of one of the rock wall coupling mechanisms (23), and the inner side of the other end of the top fixing part (24) is fixedly connected with the other end of the other rock wall coupling mechanism (23); the outer sides of the two ends of the top fixing part (24) are provided with two clamping pieces (25), each of the clamping pieces (25) is distributed in one-to-one correspondence with each of the metal sheets (113), and two of the metal sheets (113) are located between the two clamping pieces (25); each of the clamping pieces (25) is clamped with a corresponding one of the metal sheets (113); The use method comprises: The auxiliary mounting system (2) is fixed on the sensor system (1), the combination of the sensor system (1) and the auxiliary mounting system (2) is completed, and a three-component microseismic sensor is obtained; the monitoring directions of the three sensor cores (15) are respectively aligned with the positive east, the positive north and the positive up, the gyroscope chip (13) is turned on, and the Euler angle displayed by the gyroscope chip (13) at this time is recorded as 0, 0, 0; the three-component microseismic sensor is slowly put into the drill hole (3), is lowered to the installation position, then grouting is injected into the drill hole (3), after the grouting is stable, the Euler angle reading of the gyroscope chip (13) is read; the spatial coordinate point of the three-component microseismic sensor is converted based on the read Euler angle reading of the gyroscope chip (13).

2. A method of using a precisely installable three-component microseismic sensor according to claim 1, characterized in that: Three chip fixing holes are formed in the sensor inner fixing sheet (12), and the gyroscope chip (13) is fixed in the three chip fixing holes.

3. A method of using a precisely installable three-component microseismic sensor according to claim 2, wherein, The rock wall coupling mechanism (23) comprises: A first supporting rod (231), one end of the first supporting rod (231) is fixedly connected with the other end of a corresponding one of the compression springs (22); A second supporting rod (232), one end of the second supporting rod (232) is movably connected with the other end of the first supporting rod (231), and the other end of the second supporting rod (232) is fixedly connected with the inner side of a corresponding end of the top fixing part (24); An arc-shaped plate (233) is fixed at the connection between the first support rod (231) and the second support rod (232), and the inner side of the arc-shaped plate (233) faces the connection.

4. A method of using a precisely installable three-component microseismic sensor according to claim 3, wherein, The coordinate conversion of the spatial coordinate point of the three-component microseismic sensor based on the Euler angle reading of the gyroscope chip (13) specifically comprises: the initial coordinate system of the three-component microseismic sensor is the same as the geodetic coordinate system, the rotation sequence of the gyroscope chip (13) is X, Y and Z, the sensor coordinate system of the three-component microseismic sensor is determined according to the rotation sequence and the Euler angle, the relationship between the sensor coordinate system and the geodetic coordinate system is obtained, and the conversion between the geodetic coordinate system and the sensor coordinate system is performed on any spatial coordinate point.

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