Recovery of Level Pillar between Open-pit and Underground Mine by Using Underhand Heading Fill Method

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 

作者机构：Univ Sci & Technol Beijing Sch Civil & Environm Engn Beijing 100083 Peoples R China Jilin Nickel Corp Fujia Mine Jilin 132311 Peoples R China 

出 版 物：《Journal of University of Science and Technology Beijing》 (北京科技大学学报（英文版）)

年 卷 期：2001年第8卷第4期

页      面：244-247页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

主　　题：level pillar underhand heading method fill materials with silicate gelling agent 

摘      要：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 maximum width of 35 in. As the level pillar contained about 5.2 million ton ore of high nickel grade, it was necessary to recover the level pillar. Because of special need of safety, underhand heading cut-and-fill stoping method was used. For the first two layers of heading, the cemented fill materials were a mix of water and high-aluminum-content cement with silicate gelling agent; and for other heading layers, total tailings was added into the fill mix in order to reduce the cement consumption. Finally, the level pillar was recovered successfully.