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Through exposition on top coal caving mining method, as well as fully-mechanized top-coal mining method in the current development and prospect of China's largest coal enterprises, at the same time it can bring great benefits, also raised its recycling rate is still generally low phenomenon, effect analysis of the main reasons: at the end of the early mining losses, loss of head loss, caving technology...
For the actual implementation of fully-mechanized caving mining in thick coal seam in China, systems analysis of the influence factors of top coal capability, including natural geological factors and technology factors. Influence factors of top coal capability, constitute analysis of fully mechanized caving coal loss, thereby reducing loss of coal, improve mining rate of fully mechanized caving is...
The highway construction in China has been leading to increasingly serious problem that more and more coal is left under highway. Getting the unexploited coal as much as possible and ensuring the safety of highways at the same time becomes a subject that must be solved urgently. The paper discussed the characteristics of highway deformations which were caused by underground mining, proposed the principles...
Considering YuShenfu coal mining area, this paper uses the Gray correlation analysis method to analyze and select the 7 major factors which come from two aspects that are geological occurrence condition and coal mining design condition, on the basis of analyzing the formation mechanism of mining subsidence in the study area. And the five of seven which are disturbance coefficient, width-depth ratio,...
Coal is the major energy in China, and its development key lies in narrowing the gap with international counterpart and promoting international competition ability. The paper established the coal industry international competitiveness evaluation index system. Based on the coal industry competitiveness data of 11 main countries rich in coal, the paper adopted principal component analysis for comprehensive...
In recent years, coal mine accidents have happened frequently in our country. These bring high casualties and huge economic losses, and ring the alarm bell for our coal industry. The traditional coal mine gas monitoring system uses the method of wire network, because of the restriction of time and space flexibility in the wire network, it is impossible to build a wire system in short time. For real-time...
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