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《The Chinese Journal of Geological Hazard and Control》 2005-01
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The law of subsidence and calculation method in the case of utmost non-full extraction

YANG Lun~1,WEN Ji-yang~2, YU Shi-quan~2 (1.Liaoning Technical University, Fuxin 123000, China; 2.Dayan Coal Group Company, Dayan 021122, China)  
The law of mining subsidence has particularity in the case of utmost non-full extraction. When the mining width is less than the mining subsidence starting distance, mining subsidence or mining subsidence ratio(q′/q)is equal to zero. When the mining width reaches to the mining subsidence starting distance, the mining subsidence will grow slowly. When it is near to the critical extraction distance, the rate of mining subsidence increases sharply and the mining subsidence ratio(q′/q)has the relation of negative exponential function with the rate of width to depth(D/H). When we estimate the mining subsidence in the case of utmost non-full extraction, we must correct the probability integration method's subsidence coefficient. The calculation example shows that the method in this paper is feasible.
【Fund】: 国家自然科学基金重点项目"与环境协调的煤炭资源开采关键科学问题研究"
【CateGory Index】: TD327
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