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Mining Method Selection and Optimization for Hanging-Wall Ore-Body at Yanqianshan Iron Mine, China.

Authors :
Liu, Kai
Zhu, Wancheng
Wang, Qingyuan
Liu, Xiaobo
Liu, Xige
Source :
Geotechnical & Geological Engineering; Feb2017, Vol. 35 Issue 1, p225-241, 17p
Publication Year :
2017

Abstract

In order to smooth ore production during the transition from open pit to underground mining at Yanqianshan Iron Mine, China, it is necessary to select an appropriate mining method to operate simultaneously open-pit mining and underground mining for inner-slope (hanging-wall) ore-body. Based on practical geologic setting of the hanging-wall ore-body, a comprehensive evaluation model for selecting the underground mining method to extract handing-wall ore-body was proposed, which is constituted by 3 sub-systems of safety factors, production factors and technical-economic factors. This evaluation model could be analyzed by the mutation progression method, which based on catastrophe theory and fuzzy mathematics. In addition, the FLAC is employed to simulate the mining process of hanging-wall ore-body, and finally the optimal mining scheme is determined. By using mutation progression analysis and numerical modeling, some useful conclusions for hanging-wall ore-body mining have been drawn, which will be beneficial to mining safety during transitional period from open-pit to underground mining. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09603182
Volume :
35
Issue :
1
Database :
Complementary Index
Journal :
Geotechnical & Geological Engineering
Publication Type :
Academic Journal
Accession number :
121002383
Full Text :
https://doi.org/10.1007/s10706-016-0100-0