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A Roof Lithology and Layer Thickness Analysis Method Based on Laser Ranging

A technology of laser distance measurement and analysis method, which is applied in the direction of measuring device, optical device, electromagnetic wave re-radiation, etc., can solve the problems of difficult to meet the requirements of data representativeness, heavy workload of drilling peeping instrument, inconvenient operation, etc. Achieve the effects of easy promotion, low cost and cost saving

Active Publication Date: 2018-04-03
CHINA UNIV OF MINING & TECH
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Problems solved by technology

The borehole peeping instrument has a large workload and high cost, and it is difficult to perform a large number of observations, so the representativeness of the data is difficult to meet the requirements; the roof rock detection can test the lithology of the roof through drilling, but the current equipment has low accuracy and low reliability , the problem of inconvenient operation

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  • A Roof Lithology and Layer Thickness Analysis Method Based on Laser Ranging

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Embodiment Construction

[0026] The present invention will be further explained below in conjunction with the accompanying drawings.

[0027] A method for analyzing roof lithology and layered thickness based on laser ranging, comprising the following steps:

[0028] a) Firstly, actual drilling is carried out on rock samples of different lithologies on the ground, and the drilling speed of several groups of typical rocks is recorded;

[0029] b) Before the roof bolt is hit in the roadway, install the casing on the top cone at the lower end of the telescopic cylinder of the bolter, install a high-frequency laser transmitter, laser receiver and data storage in the casing, and install it on the top of the bolter. A reflector is installed on the outer cylinder;

[0030] c) Start the rock bolter and the high-frequency laser transmitter. During the drill rod drilling process of the rock bolter, the high-frequency laser transmitter emits a high-frequency laser beam, which is reflected by the reflector and re...

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Abstract

The invention discloses a roof lithology and layer thickness analysis method based on laser ranging, comprising the following steps: recording multiple groups of typical rock drilling speeds; installing a high-frequency laser transmitter, laser receiver, data Memory and reflector; during the drill rod drilling process of the rock bolter, record the time difference between each laser beam emission and reception; according to the principle of laser ranging, the average drilling distance of two adjacent laser ranging processes can be calculated Speed; through the average drilling speed of the drill rod measured by the laser pulse, the lithology and thickness of each rock layer on the roof are analyzed and calculated. The invention adopts laser ranging, has high precision, simple equipment, good reliability, convenient installation, low cost and easy popularization.

Description

technical field [0001] The invention relates to an analysis method for roof lithology and layer thickness, which is used for quickly grasping parameters of the roof of coal mine roadway underground. Background technique [0002] At present, the number of deaths caused by roof fall accidents in coal mining in my country accounts for more than half of all deaths. Therefore, how to timely and accurately grasp the lithology and structure of the roof slab of coal mine roadway is a major production safety problem that needs to be solved urgently. At present, the methods for roadway roof detection include borehole peepers and roof rock formation detection. The borehole peeping instrument has a large workload and high cost, and it is difficult to perform a large number of observations, so the representativeness of the data is difficult to meet the requirements; the roof rock detection can test the lithology of the roof through drilling, but the current equipment has low accuracy and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/08G01B11/06
CPCG01B11/06G01S17/08
Inventor 钱德雨张农张天池谢正正韩昌良
Owner CHINA UNIV OF MINING & TECH