Comparative study of mining methods for reserves beneath end slope in flat surface mines with ultra-thick coal seams  

作　　者：Zha Zhengao Ma Li Li Kemin Ding Xiaohua Xiao Shuangshuang 

机构地区：[1]School of Mines, China University of Mining and Technology, Xuzhou 221116, China [2]School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China [3]State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China

出　　处：《International Journal of Mining Science and Technology》2017年第6期1065-1071,共7页矿业科学技术学报（英文版）

基　　金：provided by the National Natural Science Foundation of China(No.90510002);the Science and Technology Research of the Ministry of Education of China(No.306008)

摘　　要：The paper aims to identify a reasonable method for mining ultra-thick coal seams in an end-slope in surface mine, With a case study of Heidaigou surface coal mine(HSCM), the paper conducted a comparative research on three mining methods, namely Underground Mining Method(UMM), Highwall Mining System(HMS) and Local Steep Slope Mining Method(LSSMM). A model was firstly established to simulate the impact that UMM and HMS exert on monitoring points and surface deformation. The way that stripping and excavation amount varies with different slope angle, and the corresponding end slope stability were analyzed in the mode of LSSMM. Then a TOPSIS model was established by taking into account six indicators such as recovery ratio, technical complexity and adaptability, the impact on surface mining production, production safety and economic benefits. Finally, LSSMM was determined as the best mining method for mining ultra-thick coal seams in end slope in HSCM.The paper aims to identify a reasonable method for mining ultra-thick coal seams in an end-slope in surface mine, With a case study of Heidaigou surface coal mine(HSCM), the paper conducted a comparative research on three mining methods, namely Underground Mining Method(UMM), Highwall Mining System(HMS) and Local Steep Slope Mining Method(LSSMM). A model was firstly established to simulate the impact that UMM and HMS exert on monitoring points and surface deformation. The way that stripping and excavation amount varies with different slope angle, and the corresponding end slope stability were analyzed in the mode of LSSMM. Then a TOPSIS model was established by taking into account six indicators such as recovery ratio, technical complexity and adaptability, the impact on surface mining production, production safety and economic benefits. Finally, LSSMM was determined as the best mining method for mining ultra-thick coal seams in end slope in HSCM.

关 键 词：Ultra-thick coal SEAM END wall in surface mine Highwall Mining System Local STEEP SLOPE Resource exploitation 

分 类 号：TD824[矿业工程—煤矿开采]