Microseismic monitoring and early warning analysis system and method under rock slope excavation disturbance

Abstract

The invention discloses a micro-seismic monitoring early warning analysis system and method under the action of rock slope excavating perturbation. The system comprises a signal receiving unit, a signal acquisition unit, a signal storage and processing unit and an analysis and early warning unit arranged inside a slope; the signal receiving unit is used for receiving micro-seismic signals of a rock slope under the action of excavating perturbation and sending the micro-seismic signals to the signal acquisition unit; the signal acquisition unit is used for acquiring the micro-seismic signals and sending the micro-seismic signals to the signal storage and processing unit; the signal storage and processing unit is used for storing and processing the acquired signals and sending the signals to the analysis and early warning unit; and the analysis and early warning unit is used for analyzing the micro-fracture condition of the rock slope according to the processed signals and early warning the instability disaster of the rock slope. The system and the method can timely monitor and analyze the micro-seismic activity of the steep rock slope under the action of excavating perturbation and early warn the instability disaster of the slope, and are high in working efficiency, low in cost and wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower, in particular to a microseismic monitoring and early warning analysis system and method under the disturbance of rock slope excavation. Background technique [0002] As a nonlinear complex system, it is difficult to directly map the characteristic data of external excavation disturbance to a suitable characteristic space in an explicit nonlinear manner. When the deformation reaches a certain threshold, it will cause slope instability and damage, leading to huge landslide geological disasters. In the past ten years, with the rapid development of a large number of engineering constructions, the stability of excavation projects on high and steep slopes has become a common concern in various industries such as hydropower, mining, railways, and highways at home and abroad. [0003] In the construction of large-scale water conservancy and hydropower projects, the excavation of...

AI Technical Summary

Problems solved by technology

Most of the existing studies so far have not considered the impact of rock mass damage and deformation during excavation, and still mainly rely on the detection of deformation and relaxation of slope rock mass to explore the spatiotemporal evolution of the excavation disturbance area and the mechanics of rock mass. It has not yet established a strict calculation theory or formed a relatively systematic theoretical guidance system, and the research on the evolution law of slope rock mass damage during the excavation process is even blank, and basically there are not many engineering references

[0006] The current common methods to solve this problem mainly rely on the empirical analysis of experts and the qualitative analysis of macroscopic deformation signs, which makes the calculation results inconsistent with the actual situation.

In this way, irregular excavation operations are likely to be an important cause of slope instability and damage

It makes people blind to the excavation of such projects, which leads to large deformation or (local) instability of the slope

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