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检索条件"主题词=fill materials with silicate gelling agent"
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Recovery of Level Pillar between Open-pit and Underground Mine by Using Underhand Heading fill Method
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Journal of University of Science and Technology Beijing 2001年 第4期8卷 244-247页
作者: Sijing Cai, Hai Zhao,Shangjun Ying 1) Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China 2)Fujia Mine, him Nickel Corporation, Jilin 132311, China Univ Sci & Technol Beijing Sch Civil & Environm Engn Beijing 100083 Peoples R China Jilin Nickel Corp Fujia Mine Jilin 132311 Peoples R China
The upper part of the Fujia deposit was mined out by open-pit, and the lower part is being mined underground. The level pillar between open-pit and underground mine had a thickness of 24 m, a length of 300 m and a max... 详细信息
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