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检索条件"主题词=Panjiang coal field"
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Application of coal mine roof rating in Chinese coal mines
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International Journal of Mining Science and Technology 2018年 第3期28卷 491-497页
作者: Wang Yongyin Taheri Abbas Xu Xianbi Mining College Guizhou University School of Civil Environmental and Mining Engineering University of Adelaide Shanjaoshu coal Mine Guizhou Panjiang Investment Holdings Group Co. Ltd
The coal mine roof rating(CMRR) is a measure of roof quality or structure competency for bedded roof types typically of underground coal mines. The CMRR has been used widely in the US, South Africa,Canada and Australi... 详细信息
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