Optimization of steep-end slope mining plan in open-pit coal mines based on Vissim simulation

doi:10.16265/j.cnki.issn 1003-3033.2021.S1.021

Abstract

Abstract: In order to improve economic effectiveness of open-pit coal mines and optimize width of steep-end slope mining roads, based on current situation map of Harwusu open-pit mines, steep-end slope mining plan was proposed and slope stability simulation analysis was carried out. Then, On the premise that slope of the plan was stable, the slope grade was set according to actual road parameters at the site, and Vissim software was used to simulate traffic density and average speed of the slope behind the steep end to verify the proposed plan before its economic benefits were analyzed. The results show that the proposed plan can not only ensure slope safety, but also reduce the traffic density by 11.02 vehicles/km, while increase average speed of vehicles by 10.2 km/h. It achieves slope mining while ensures transportation efficiency, and its annual economic benefit reaches as high as 153.8 million yuan.

Key words: Vissim, open-pit coal mines, steep-end slope mining, slope stability, traffic flow simulation

CLC Number:

X936

LIU Lijie, LIU Zhichao, NIE Zhongye. Optimization of steep-end slope mining plan in open-pit coal mines based on Vissim simulation[J]. China Safety Science Journal, 2021, 31(S1): 114-120.

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