Sijing Cai, Hai Zhao, and Shangjun Ying, Recovery of Level Pillar between Open-pit and Underground Mine by Using Underhand Heading Fill Method, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 244-247.
Cite this article as:
Sijing Cai, Hai Zhao, and Shangjun Ying, Recovery of Level Pillar between Open-pit and Underground Mine by Using Underhand Heading Fill Method, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 244-247.
Sijing Cai, Hai Zhao, and Shangjun Ying, Recovery of Level Pillar between Open-pit and Underground Mine by Using Underhand Heading Fill Method, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 244-247.
Citation:
Sijing Cai, Hai Zhao, and Shangjun Ying, Recovery of Level Pillar between Open-pit and Underground Mine by Using Underhand Heading Fill Method, J. Univ. Sci. Technol. Beijing, 8(2001), No. 4, pp. 244-247.
Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China
Fujia Mine, him Nickel Corporation, Jilin 132311, China
中文摘要
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 m. 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.
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 m. 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.
下载: