Coalmine stoping roadway impact ground pressure pre-warning method

A mining roadway and rock burst technology, which is applied to mining equipment, mining equipment, earthwork drilling, etc., can solve problems such as inappropriate selection of early warning indicators and unsatisfactory early warning effects, and achieve obvious early warning effects, improved effects, and enhanced safety sexual effect

Active Publication Date: 2016-06-01
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
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Problems solved by technology

[0003] However, due to the inappropriate selection of early warning indicators in the current conventional early warning methods, the early warning effect is not ideal.

Method used

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Embodiment Construction

[0020] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] An embodiment of the present invention provides a method for early warning of rock burst in a coal mine mining roadway, comprising the following steps:

[0022] Step 1. Collecting coal body samples in the proposed early-warning recovery roadway, performing uniaxial compression failure tests on the coal body samples, obtaining the dynamic failure curve of the coal body, and calculating the dynamic failure stress index of the coal body;

[0023] Step 2, installing a radio frequency transmitter in each sensitive pressure sensor, pore water pressure gauge and roof dynamic instrument that needs to be used;

[0024] Step 3: Drill holes into th...

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Abstract

The invention discloses a coalmine stoping roadway impact ground pressure pre-warning method. The method includes following steps: calculating dynamic breaking stress exponent of a coal body; after mounting a radio frequency emitter in each of a sensitive pressure sensor, a pore water pressure gauge and a top plate dynamic instrument needing to be used, mounting in a roadway according to set threshold value and requirements, and connecting sensor signals with a data collection processor through the radio frequency emitter; setting up a three-dimensional generation module, and connecting the data collection processor with the three-dimensional generation module. Redundant and complementary information among the sensors is combined according to rules, monitoring of coalmine stoping roadway impact and giving of a safety alarm are realized, working efficiency of managers is improved, safety of roadway construction is enhanced, and pre-warning effect is obvious; roadway conditions can be presented to working personnel through the three-dimensional generation module, so that the working personnel can observe changing of the roadway immersively and pre-warning effect is further improved.

Description

technical field [0001] The invention relates to a rock burst early warning method, in particular to a coal mine mining roadway rock burst early warning method. Background technique [0002] Rockburst is a dynamic disaster that occurs underground in coal mines due to the sudden release of elastic energy accumulated in coal and rock mass during mining activities, resulting in instant throwing of coal and rock mass, roadway damage and even casualties. The occurrence of rock burst is an external manifestation of sudden failure of coal body after the stress concentration reaches a certain level. Monitoring the stress of coal body and its change is a means of early warning of rock burst. [0003] However, due to the inappropriate selection of early warning indicators in the current conventional early warning methods, the early warning effect is not ideal. Contents of the invention [0004] In order to solve the above problems, the present invention provides a method for early w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18
CPCE21F17/185
Inventor 兰天伟张宏伟李胜韩军宋卫华
Owner LIAONING TECHNICAL UNIVERSITY
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