Coalbed methaneReverse faultsMining geologyChinaInstantaneous outbursts in coal mines involve catastrophic and forceful expulsion of coal and large quantities of gas, creating a major mining hazard. Other researchers have studied relationships between coal outbursts and many geological factors, such as ...
Outburst has been defined as the sudden release of gas and material from the working place that can vary in magnitude and intensity [1]. The occurrence of an outburst is preceded by failure of the coal, and during an outburst, the failed material is ejected with energy and gas. The differ...
and a thick zone of deformed coal provides conditions favorable to coal and gas outbursts. The Daning coal mine’s main mining seam is the No. 3 coal seam with coal and gas outburst hazard, which often contains two normal coal sub-layers and one deformed sub-layer. Considering...
gasoutburstisbelievedtobethefollowing(Beamish andCrosdale.1998). f11Internalstressofthecoalseam.Thestressmay beduetotwodifferentsources:first.thedepthofbur— ia1.becausethethicknessofoverburdenandthemag— nitudeoftheverticalstressexertedonthecoalbedare ...
Moreover, the risk of protrusion increases significantly. The gas power phenomenon occurs frequently as well. Meanwhile, the original high-gas mines are gradually upgraded to coal and gas prominence mines. On-site measurement and research have shown that deep mining is not simply defined by the ...
Since the adsorbed gas plays a significant role in coal seams of high gas pressure and content, the adsorption properties of methane in coal are always the topic for researchers to explore techniques to prevent coal and gas outburst hazards, improve coal seam degasification, and enhance coalbed ...
Considering the abovementioned problems, the back propagation (BP) neural network algorithm with high nonlinear fitting ability, strong fault tolerance and rigorous derivation process has been proposed to predict coal and gas outburst. However, this algorithm still has the defects of easily falling ...
Geological Control of Fold Structure on Gas Occurrence and Its Implication for Coalbed Gas Outburst: Case Study in the Qinan Coal Mine, Huaibei Coalfield, ... A systematic analysis on gas occurrence in geological structure zone is crucial to coalbed gas exploitation, gas disaster prevention and ou...
Gaocheng Coal Mine belongs to high gas mine,because of the problem of gas over rule,it restricts safe production. 郑州矿区靠成矿属于高瓦斯矿井,在采煤工作面生产过程中回风流经常出现瓦斯超限现象,严重制约着煤矿安全生产,本文介绍了高瓦斯炮采工作面瓦斯治理过程中顶板瓦斯抽放巷和顶板岩石瓦斯抽放这两种...
On this basis, we should further promote the development of coalbed methane industrialization, and study and solve the mechanism of coalbed methane development. And timely introduce preferential tax relief for high gas and coal and gas outburst mines. policy In 2011, the number of deaths in coal ...