Abstract
The geological structure of coal mines has always been a dangerous object of attention in coal mine outburst prevention work. In order to realize coal mine safety information management and early warning of gas disasters, comprehensive use of gas geological theory, coal mine disaster warning theory, computer information technology and other analysis methods, considering the influence of geological structure, coal seam occurrence parameters, and gas parameters, an early warning indicator system for identifying the risk of coal and gas outbursts reflecting the geological characteristics of gas has been constructed. The coal and gas outburst risk identification and early warning system is constructed using the principle of multi-index step-by-step identification and extreme value determination, and it is applied on-site in the 3303 Measure Lane in the East Shaft Area of Sihe Mine. The research results show that the constructed early warning system can provide accurate early warning for the area (belt) affected by the geological structure by 10m, and can provide accurate early warning of coal and gas outbursts based on the outburst signs of gas geology such as the thickness of soft layers and changes in coal seam thickness. This technology provides effective support for coal mines to effectively prevent gas disasters and ensure coal mine production safety.
Highlights
Coal and gas outburst disasters occur frequently, causing mass deaths and injuries [1,2]
There are many factors influencing the risk of coal and gas outbursts, and there are many indicators that can directly or indirectly reflect one or more aspects of the outburst risk of coal seams [34]
The theory of gas geological zoning believes that: geological structure has obvious control effect on the outburst risk of coal seam, and geological structure controls the distribution of outburst risk by controlling the occurrence of gas, coal body structure type and tectonic stress
Summary
Coal and gas outburst disasters occur frequently, causing mass deaths and injuries [1,2]. The theory of gas geological zoning believes that: geological structure has obvious control effect on the outburst risk of coal seam, and geological structure controls the distribution of outburst risk by controlling the occurrence of gas, coal body structure type and tectonic stress. The establishment of a gas geological early warning system suitable for the specific conditions of mines can realize the information management of mine safety and the early warning of mine gas disasters. It will be one of the important technical means for coal mines to effectively prevent gas disasters and ensure coal mine production safety in the future
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