Dual-protected microseismic monitoring sensor assembly and method of installation and removal

Abstract

The invention provides a double-protected microseismic monitoring sensor assembly. The sensor assembly is fixed inside the casing through a first support base, the casing is anchored to the empty surface in the tunnel through an anchor sheet, and the anchor sheet and the casing are slidably connected. One end of the casing A hook and pull ring is provided, the outer shell includes a first shell and a second shell hinged at one end, and the movable ends of the first shell and the second shell are provided with semicircles, and the two semicircles cooperate to form a screw rod, and the shell also It includes a cylinder nut fastened to a screw rod, the semicircle body is arranged on the side of the first casing and the second casing close to the empty surface in the tunnel, the sensor assembly includes a casing with an accommodation space and a sensor, and the sensor accommodates in the receiving space. The invention also provides a method for installing and removing the double-protected microseismic monitoring sensor assembly. In the present invention, the sensor assembly can be conveniently recovered through the sliding connection between the outer casing and the anchoring sheet, and the outer casing and the casing play a double protection role.

Description

technical field [0001] The invention relates to the technical field of underground engineering, in particular to a double-protected microseismic monitoring sensor assembly and an installation and removal method thereof. Background technique [0002] When the microseismic monitoring equipment is installed in the tunnel, in order to ensure all-round signal reception, the sensors need to be installed in a scattered distribution, so some sensors need to be installed at the tunnel spandrel or vault. When installing, the staff can perform installation by climbing to the position of the TBM trolley, but as the working surface advances, the TBM gradually moves forward, resulting in a relative displacement between the position of the trolley and the position of the dome sensor after a period of time, resulting in the installation The rear sensor cannot be recycled because its height is too large, resulting in property damage. In addition, for the sake of safety, the tunnel construct...

AI Technical Summary

Problems solved by technology

When installing, the staff can climb to the position of the TBM trolley for installation, but as the working face advances, the TBM gradually moves forward, resulting in a relative displacement between the position of the trolley and the position of the vault sensor after a period of time, causing the installation The final sensor cannot be recycled due to its height, causing property damage

In addition, for the sake of safety, the tunnel construction will carry out mortar spraying treatment. Due to monitoring needs, the sensor installation process is before the spraying of the construction unit, resulting in some sensors being damaged due to the pressure of the spraying, or due to the thickness of the spraying. Larger, the sensor is buried by the mortar and cannot be recovered, resulting in the failure of the microseismic monitoring equipment to continue to work normally, affecting the monitoring effect, and further causing property losses

Images