A monitoring system and method for rock stability in a tunnel with a small clear distance

Abstract

The present invention relates to a monitoring system and method for interlayer rock stability in a tunnel with a small clear distance, wherein the monitoring method specifically includes: shooting the initial global image of the tunnel with a spherical camera; calibrating the initial global image of the tunnel with a microwave radar to lay out eight Virtual monitoring point; the laser rangefinder measures the initial positioning distance of the eight monitoring points; the microwave radar tracks the position data of the eight monitoring points; according to the change of the position data of the eight monitoring points, the laser rangefinder correspondingly follows the monitoring point and rotates at an angle , to measure the real-time positioning distance of the eight monitoring points respectively; according to the rotation angle of the laser rangefinder and the initial positioning distance and real-time positioning distance of the eight monitoring points, the computer calculates the displacement data of the eight monitoring points, based on the stability of the interlayer rock The stability criterion is used to judge and obtain the stability result of interlayer rock. Compared with the prior art, the present invention forms a remote monitoring system and method by constructing a monitoring system, which can accurately, comprehensively and integrally monitor the deformation of the tunnel structure.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering monitoring, in particular to a rock stability monitoring system and a method thereof in a tunnel with a small clear distance. Background technique [0002] In the construction monitoring process of tunnel engineering, it is often necessary to monitor the deformation state of the tunnel structure itself and the surrounding rock. The rock between the double tunnels is the interlayer rock. In addition to the deformation of the tunnel section itself, the deformation of the interlayer rock mass is an important guarantee for the overall stability of the tunnel. Its monitoring work runs through all stages of the construction process and is the key to evaluating the tunnel. and the necessary work for the stability of interlayer rocks. At present, the commonly used deformation monitoring method mainly adopts the point monitoring method, specifically by arranging physical measuring points and me...

AI Technical Summary

Problems solved by technology

At present, the commonly used deformation monitoring method mainly adopts the point monitoring method, specifically by arranging physical measuring points and measuring lines on the cross-section, and realizing the monitoring work through the convergence of the point lines, but due to many human factors in the monitoring process, resulting in The accidental errors generated are large, and the scattered data points are difficult to truly reflect the overall deformation of the structure, so most of the existing monitoring technologies are limited to systems with more manual operations, single-point monitoring, and no real-time monitoring

Images