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Regression Forecast Gneissic Freeze Water Layer Threshold of Shaft Construction
SHI Zheng-jing1, ZHANG You-bo2, LIAN Fa-xian3
 1. Xinji No.1 Mine, State Development and Investment Corporation Ltd., Fengtai  232100, China; 2. Xinji No.2 Mine, State Development and Investment Corporation Ltd., Fengtai  232100, China; 3. Hydrological Department, State Development and Investment Corporation Ltd., Huainan  232000, China


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