DOI: 10.11799/ce202311033
Optimization of inner dump height in the north end wall of the first mining district of Harwusu Open-pit Coal Mine
WANG Guilin
ZHANG Yu
WANG Xiaodong
LIU Xuanyu
LYU Wenwei
Abstract：The north end wall of the first mining district of Harwusu Open-pit Coal Mine is adjacent to the south end wall of the second mining district of Heidaigou Open-pit Coal Mine.To obtain the best economic benefit from the adjacent resources mining of the two mines,combining with the engineering practice,we established the optimization model of the inner dump covering height in the north end wall of the first mining district of Harwusu Open-pit Coal Mine,and aiming at the difference between the increment of stripping transportation cost and the net present value of the reduced secondary stripping cost of no less than 0,we compared and analyzed four schemes with inner dump elevations+1160,+1130,+1100,+1070.The results show that the economic benefits of adjacent end wall resources mining of the two mines can be maximized when the inner dump elevation in the north end wall of the first mining district of Harwusu Open-pit Coal Mine is+1100.
Keywords：open-pit coal mineend wallinner dump heightnet present value
Publication Date：2023-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 6-10 )