Rockfall investigation method based on constant fretting technology

A technology of frequent micro-movement and rockfall of dangerous rocks. It is applied in the direction of analyzing solids using sonic/ultrasonic/infrasonic waves.

Inactive Publication Date: 2017-09-29
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

Although the constant fretting technology is widely used, there is no report on the method of perilous rockfall investigation based on the constant fretting technology

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  • Rockfall investigation method based on constant fretting technology

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Embodiment Construction

[0013] In conjunction with the accompanying drawings, a dangerous rockfall investigation method based on constant micro-motion technology is characterized in that it includes the following steps:

[0014] 1. A micro-motion signal detection and processing system is set; the micro-motion signal detection and processing system includes: a scanning laser vibrometer 1, a data analysis processor 2, a micro-motion data analysis software, and an instrument support 3; the scanning laser vibrometer 1, It can scan and measure the vibration of a certain area in front, and has the function of automatic calibration, which can eliminate the influence of the support and its own vibration on the measurement results. The measurement content includes displacement, velocity and acceleration, and then the vibration frequency and amplitude of the measured object can be obtained; The data analysis processor 3 is connected to the scanning laser vibrometer, and can store, display, process and analyze m...

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Abstract

The invention discloses a dangerous rockfall investigation method based on the constant micro-motion technology, which evaluates the stability of the rock mass by detecting the constant micro-motion characteristics of the rock mass, including the following steps: ① setting a micro-motion signal detection and processing system; The micro-motion signal detection and processing system includes: scanning laser vibrometer, data analysis processor, micro-motion data analysis software and instrument support; Corresponding coordinate system; ③Take the fretting characteristic parameters of the bedrock as the benchmark data, compare with the fretting characteristic parameters of other coordinate points, and evaluate the risk of falling of the rock block according to the analysis results; if a coordinate point The constant fretting characteristic parameters of the point are quite different from the benchmark data, indicating that the rock block corresponding to the point is not substantially connected with the bedrock, and is a dangerous rock block. The invention can quickly collect the constant micro-motion data of the rock mass in the target area by scanning the laser vibrometer, and is convenient for large-scale dangerous rockfall investigation.

Description

technical field [0001] The invention relates to the field of rockfall investigation of dangerous rocks, in particular to a rockfall tendency investigation method of dangerous rocks based on constant micro-motion technology. Background technique [0002] Dangerous rockfall is a common geological disaster in slope engineering and underground engineering. Under the action of gravity and other disturbances, dangerous rock blocks may suddenly break away from the bedrock, slide and fall. When it occurs on the side slope near the road, it often brings serious hazards such as traffic interruption and personal injury. When drilling and blasting is used in underground engineering construction, some rock blocks that have actually been separated from the bedrock but have not yet fallen will often be produced. When the environment is disturbed, they may suddenly fall, which seriously threatens the safety of construction personnel on site. Therefore, in these projects, it is necessary to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04
Inventor 蒋宇静吴学震王健华李博王刚
Owner SHANDONG UNIV OF SCI & TECH
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