浅埋薄基岩采煤工作面上覆岩层纵向贯通裂隙 “张开—闭合” 规律.

Autor: 贾后省1 jiahousheng@126.com, 马念杰2, 赵希栋2
Zdroj: Journal of the China Coal Society / Mei Tan Xue Bao. dec2015, Vol. 40 Issue 12, p2787-2793. 7p.
Databáze: Academic Search Ultimate
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