Dangerous rock recognition method

An identification method and rock block technology, applied in measuring devices, instruments, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as unreported, achieve strong anti-interference ability, simplify detection steps, and avoid errors.

Inactive Publication Date: 2015-06-10
SHANDONG UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

Although the constant fretting technology is widely used, the method of identifying dangerous rocks based on the constant fretting technology has not been reported yet.

Method used

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  • Dangerous rock recognition method

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Embodiment Construction

[0014] combined with figure 1 , a dangerous rock identification method is characterized in that comprising the following steps:

[0015] ① Set up a micro-motion signal detection and processing system; the micro-motion signal detection and processing system includes: a single-point three-dimensional laser vibrometer 1, a data analysis processor 2, a micro-motion data analysis software and an instrument bracket 3; the single-point three-dimensional laser vibrometer Vibration instrument 1 has the function of automatic calibration, which can eliminate the influence of the support and its own vibration on the measurement results, and can simultaneously measure the micro-motion data in the X, Y, and Z directions of the object. The measurement content includes displacement, velocity and acceleration, and then can be calculated. Obtain data such as the vibration frequency and amplitude of the measured object; the data analysis processor 2 is connected with the single-point three-dimen...

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Abstract

The invention discloses a dangerous rock recognition method. The dangerous rock recognition method is characterized by comprising the following steps of 1 setting a micro-motion signal detecting and processing system, wherein the micro-motion signal detecting and processing system comprises a single-point three-dimensional laser vibration measurement instrument, a data analysis processor, micro-motion data analysis software and an instrument support; 2 acquiring frequent micro-motion data of a base rock and a rock block to be measured and transferring the frequent micro-motion data to the data analysis processor to be processed; 3 comparing and analyzing two groups of data and evaluating the falling danger level of the rock block according to an analysis result. If the difference of frequent micro-motion characteristic parameters of the rock block to be measured and frequent micro-motion characteristic parameters of the base rock is large, the rock block to be measured is not substantially connected with the base rock together and is a dangerous rock block. The dangerous rock recognition method utilizes a natural vibration micro-motion signal of an object, does not need an external vibration source, adopts a non-contact measurement mode, can accurately measure micro-vibration of a remote object and has the advantage of being high in accuracy.

Description

technical field [0001] The invention relates to the field of identifying dangerous rock blocks in slope engineering and underground engineering, in particular to a method for identifying dangerous rock blocks based on constant fretting technology. Background technique [0002] Dangerous rockfall is a common 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 the drilling and blasting method is used in underground engineering, some rock blocks that have actually been disconnected 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, dang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01H9/00
Inventor 吴学震蒋宇静王健华李博
Owner SHANDONG UNIV OF SCI & TECH
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