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Key technology of drilling in-seam directional borehole of 3000 m in underground coal mine
Key technology of drilling in-seam directional borehole of 3000 m in underground coal mine
2019
Shi Zhijun
Dong Shuning
Yang Junzhe
Xu Chao
Hao Shijun
Li Quanxin
Chen Dianfu
Yao Ke
Liu Jianlin
Tian Dongzhuang
Keywords:
Mining engineering
Coal mining
Geology
Drilling
Borehole
Correction
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