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Comparative study of mining methods for reserves beneath end slope in flat surface mines with ultra-thick coal seams 被引量:2

Comparative study of mining methods for reserves beneath end slope in flat surface mines with ultra-thick coal seams
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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.
出处 《International Journal of Mining Science and Technology》 SCIE EI CSCD 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)
关键词 Ultra-thick coal SEAM END wall in surface mine Highwall Mining System Local STEEP SLOPE Resource exploitation Ultra-thick coal seam End wall in surface mine Highwall Mining System Local steep slope Resource exploitation
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