A method for monitoring and early warning the rock burst risk of a coal seam bifurcation merging area
A technology of rock burst, monitoring and early warning, applied in the field of coal mining risk avoidance and coal mining, can solve the problems of elastic wave CT inversion technology not being able to achieve real-time early warning, large error of electromagnetic radiation technology, and insufficient research, etc. Improved, easy-to-use, wide-ranging effects
Active Publication Date: 2019-06-14
SHAOXING UNIVERSITY
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Problems solved by technology
In particular, the research on impact disasters in coal seam bifurcation and merging areas is not sufficient, and there are still many deficiencies in the monitoring and early warning of its impact risk. For example, the impact tendency index stipulated in the national standard is measured by laboratory tests, which only represent The properties of the material itself cannot reflect the influence of geology and mining; the elastic wave CT inversion technology cannot achieve real-time early warning; the microseismic method, acoustic emission technology and electromagnetic radiation technology have large errors and low accuracy
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[0031] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0032] Such as figure 1 As shown, it is a flow chart of the method for monitoring and warning the risk of rock burst in the coal seam bifurcation and merging area of the present invention. Such as figure 2 Shown is a specific implementation structure diagram of the method for monitoring and early warning of rock burst risk in coal seam bifurcation and merging areas of the present invention.
[0033] In a specific embodiment, the method of the present invention comprises the following steps:
[0034] (1) The data processing computer normalizes the impact tendency index of the coal seam to obtain the comprehensive index of impact tendency, in which the impact tendency index includes dynamic failure time index DT, elastic energy index W ET , Impact energy index K E and the uniaxial compressive strength ...
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The invention relates to a method for monitoring and early warning the rock burst risk of a bifurcation merging area of a coal seam, which comprises the following steps of: normalizing an impact tendency index, and comprehensively processing the impact tendency index and a shear stress comprehensive index obtained by a test to obtain a corresponding impact tendency comprehensive judgment index soas to judge the rock burst risk. By adopting the method for monitoring and early warning the rock burst risk of the bifurcation merging area of the coal seam, the real-time monitoring and early warning of the rock burst risk of the target area can be realized, the operation is simple and convenient, the cost is lower, the precision is improved, and the application range is wider.
Description
technical field [0001] The invention relates to the technical field of coal mining, in particular to the technical field of risk avoidance in coal mining, and specifically refers to a method for monitoring and early warning of the risk of rock burst in coal seam bifurcation and merging areas. Background technique [0002] Coal is an important energy source in my country. With the adjustment of industrial structure and the demand for environmental protection in recent years, the proportion of oil, natural gas and new energy has increased, and the consumption of coal resources has decreased. However, the status quo of "rich coal, poor oil, and little gas" will make coal still the main energy source in the next few decades. At present, the shallow coal resources in the eastern region have basically been exploited, and the mining depth is gradually developing to the deep. It is estimated that in the next 20 years, most coal mines in my country will enter the mining depth of 100...
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IPC IPC(8): G06Q10/06G06Q50/02E21F17/18
Inventor 刘广建王建娟
Owner SHAOXING UNIVERSITY