CN-120254942-B - Three-component microseismic sensor fixing and orienting device and working method thereof

CN120254942BCN 120254942 BCN120254942 BCN 120254942BCN-120254942-B

Abstract

The invention discloses a three-component microseismic sensor fixing and orienting device and a working method thereof, wherein the three-component microseismic sensor is fixed in a sensor arrangement bin and keeps three components of the sensor arrangement bin mutually perpendicular, and meanwhile, the directions of the three components are consistent with the calibration directions of triaxial coordinates on a direction detection combined cover; the arrangement bin sleeve is placed in the drill hole and can be tightly connected with the periphery of the drill hole, the sensor arrangement bin is placed in the arrangement bin sleeve, the inclination angle sensor arranged in the sensor arrangement bin can read inclination angle data of the current sensor arrangement bin, meanwhile, the azimuth detection combined cover is utilized, the coordinate cover and the compass cover are all positioned on the same horizontal plane through rotation and leveling, the azimuth data of the compass are read, the data are combined with the inclination angle data, so that azimuth postures of three-component microseismic sensors can be accurately obtained, the arrangement azimuth of the microseismic sensors is oriented, the arrangement azimuth consistency of a plurality of microseismic sensors is guaranteed, and finally accurate data support is provided for follow-up microseismic monitoring processing.

Inventors

QIAN YANAN
LIU TING
LI QUANGUI
ZHAI CHENG
XU JIZHAO
YU XU
XU HEXIANG
Wen hongda

Assignees

中国矿业大学

Dates

Publication Date: 20260505
Application Date: 20250403

Claims (7)

1. The three-component microseismic sensor fixing and orienting device is characterized by comprising an azimuth detection combined cover, an arrangement bin sleeve and a sensor arrangement bin; the sensor arrangement bin is arranged in the sleeve of the arrangement bin, and a groove is formed in the sensor arrangement bin and used for placing the three-component microseismic sensor and the inclination sensor; The azimuth detection combined cover is arranged at one end of the sensor arrangement bin and comprises a compass cover and a coordinate cover, the coordinate cover is arranged at the end part of the sensor arrangement bin, one side Luo Pangai is movably connected with one side of the coordinate cover, so that Luo Pangai is stacked on the upper part of the coordinate cover when not in use and is in the same horizontal plane with the coordinate cover when in use; a compass is arranged in the compass cover and is used for measuring the azimuth; the compass cover is provided with a compass level meter for measuring the levelness of Luo Pangai when the compass is used, and the coordinate cover is provided with coordinates for being matched with the compass to determine the azimuth attitude of the three-component microseismic sensor, specifically, the sensor arrangement bin is provided with a groove structure with three mutually perpendicular sides, so that the three-component microseismic sensor can keep the three components mutually perpendicular after being fixed in the groove, and the directions of the three components are consistent with the calibration directions of the three-axis coordinates on the azimuth detection combination cover; the coordinate system comprises a coordinate system, a coordinate system and a coordinate system, wherein the coordinate system comprises an X axis, a Y axis and a Z axis, the directions of three axes are kept to be the same as the directions of three detection components of a three-component microseismic sensor respectively, the directions of 0-degree score lines of a compass are the same as the directions of the X axis, and a cover level meter is arranged on the coordinate system cover and used for measuring the levelness of the coordinate system cover when the coordinate system cover is used.
2. The three-component microseismic sensor fixing and orienting device according to claim 1, wherein the sensor arrangement bin is a cylinder, a groove is formed in the side portion of the cylinder and extends to one of end faces, and the groove is in a right-angle fan shape on the radial section of the cylinder and is in a rectangular shape on the axial section of the cylinder.
3. The three-component microseismic sensor fixation and orientation device of claim 1 wherein the deployment cartridge sleeve is a rectangular housing with a cylindrical slot formed therein.
4. The three-component microseismic sensor fixing and orienting device according to claim 1, wherein the compass level comprises a round vacuole box and a compass balance ball, the compass balance ball is placed in the round vacuole box, the levelness of Luo Pangai is judged according to whether the compass balance ball is located at the center of the round vacuole box, the cover level comprises a rectangular vacuole box and a cover balance ball, the cover balance ball is placed in the rectangular vacuole box, and the levelness of the coordinate cover is judged according to whether the rectangular balance ball is located at the center of the rectangular vacuole box.
5. The three-component microseismic sensor fixation and orientation device of claim 1 wherein the coordinate cover side and compass cover side are connected by a hinge.
6. The three-component microseismic sensor fixing and orienting device according to claim 1, wherein an internal coil is arranged in the arrangement bin sleeve, and the three-component microseismic sensor and the inclination sensor are respectively connected with an external data acquisition terminal through the internal coil and used for transmitting acquired data.
7. A method of operating a three-component microseismic sensor mounting and orientation apparatus according to any one of claims 1 to 6, comprising the steps of: firstly, selecting a required monitoring position, drilling until the position reaches bedrock, and then pouring and fixing the arrangement bin sleeve in the drilling; Fixing the three-component microseismic sensor and the inclination sensor in a groove of a sensor arrangement bin, and guaranteeing seamless fit with the wall surface of the groove, wherein the three-component microseismic sensor and the inclination sensor are respectively connected with a data acquisition terminal through built-in coils; Step three, turning Luo Pangai to open an azimuth detection combined cover, firstly adjusting a coordinate cover to keep the coordinate cover horizontal through a cover body level meter, then adjusting a compass cover to be in the same horizontal plane with the coordinate cover through the compass level meter, wherein the direction of a 0-degree line of a compass is the same as the direction of an X axis, reading the degree of deviation of a compass from the 0-degree line, combining the inclination angle value of an inclination angle sensor to obtain the azimuth attitude of a three-component microseismic sensor, and starting microseismic monitoring work on the basis of the current azimuth attitude; and step four, after the microseismic monitoring test is finished, the sensor arrangement bin and the azimuth detection combined cover are taken out of the arrangement bin sleeve for subsequent test repeated use.

Description

Three-component microseismic sensor fixing and orienting device and working method thereof Technical Field The invention belongs to the technical field of microseismic monitoring, and particularly relates to a three-component microseismic sensor fixing and orienting device and a working method thereof. Background The microseism focus positioning technology is used as one of the most basic and key technologies in the microseism monitoring field, and is widely applied to various engineering fields. The three-component microseismic sensor is a device for measuring rock-soil vibration linear acceleration and vibration parameters by receiving vibration waves in three directions of an X axis, a Y axis and a Z axis, is key equipment in a microseismic source positioning technology, and has important influence on three-component microseismic data inversion element motion and polarization positioning accuracy by arranging information such as azimuth and inclination angle. The existing three-component microseismic sensor fixing mode is to fix the sensor on a rock mass or a rock wall through a fixing clamp, the fixing mode causes inconsistent arrangement azimuth of a plurality of three-component microseismic sensors, the positioning result is divergent, the specific seismic source position cannot be accurately determined, the microseismic sensor cannot be tightly attached to a bedrock, and the microseismic activity original signal cannot be monitored or is severely distorted. Therefore, how to provide a new device and method can orient the layout orientation of the microseismic sensors to ensure the consistency of the layout orientations of a plurality of microseismic sensors, and simultaneously, the device can enable the microseismic sensors to be closely attached to bedrock to obtain the required original signals of microseismic activities, and finally, the follow-up microseismic monitoring processing is carried out through accurate data support, so that the device and the method are the directions of research required by the invention. Disclosure of Invention Aiming at the problems in the prior art, the invention provides the three-component microseismic sensor fixing and orienting device and the working method thereof, which can orient the arrangement positions of the microseismic sensors to ensure the arrangement position consistency of a plurality of microseismic sensors, and simultaneously can enable the microseismic sensors to be tightly attached to bedrock to obtain the required microseismic activity original signals, and finally, accurate data support is carried out for subsequent microseismic monitoring processing. In order to achieve the aim, the technical scheme adopted by the invention is that the three-component microseismic sensor fixing and orienting device comprises an azimuth detection combined cover, an arrangement bin sleeve and a sensor arrangement bin; the sensor arrangement bin is arranged in the sleeve of the arrangement bin, and a groove is formed in the sensor arrangement bin and used for placing the three-component microseismic sensor and the inclination sensor; The azimuth detection combined cover is arranged at one end of the sensor arrangement bin and comprises a compass cover and a coordinate cover, the coordinate cover is arranged at the end part of the sensor arrangement bin, one side Luo Pangai of the coordinate cover is movably connected with one side of the coordinate cover, so that Luo Pangai is stacked on the upper part of the coordinate cover when not in use and is positioned on the same horizontal plane with the coordinate cover when in use, a compass is arranged in the compass cover and used for measuring azimuth, a compass level meter is arranged on the compass cover and used for measuring the levelness of Luo Pangai when the compass is in use, coordinates are arranged on the coordinate cover and used for determining the azimuth posture of the three-component microseismic sensor in cooperation with the compass, and a cover level meter is arranged on the coordinate cover and used for measuring the levelness of the coordinate cover when the coordinate cover is in use. Further, the sensor arrangement bin is a cylinder, a groove is formed in the side portion of the cylinder and extends to one end face, the groove is in a right-angle fan shape on the radial section of the cylinder, and the groove is in a rectangular shape on the axial section of the cylinder. The structure can ensure that the three surfaces of the groove are mutually perpendicular, and is used for subsequently placing the three-component microseismic sensor, keeping the fixed directions of the components mutually perpendicular, and improving the precision of microseismic data acquisition. Further, the arrangement bin sleeve is a rectangular shell with a cylindrical groove formed in the inner part. The sensor is placed into the drill hole by adopting the shape to be poured and filled through a gap between the periph