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Because of the significant influence of clip bottles on top-coal's falling and release properties, in order to improve the recovery rate, the authors analyze the influencing mechanism and process from the aspects like the clip bottles lithology, the development degree of joints and fissures, the clip bottles layer position, the clip bottles layer thickness, ect. And put forward measures to handle...
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...
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