Study of the Stability of a High Steep Slope Due to Underground Mining

摘要：

The use of sublevel-caving after transformation from open-pit to underground mining can cause deformation and failure of high steep pit wall slopes. Prediction of the extent and the severity of the damage zone generated by the sublevel caving are important for managing the underground mining operation. This paper presents analysis of the Daye iron mine during transformation from a deep open-pit to underground mining using physical models and numerical simulation. The results indicate that the maximum vertical settlement of the high steep slope is 28.2mm.The extent of damage and the plastic zone increases with the mining depth. Shear failure of the rock mass mainly appeared at the foot of the two sides slopes. The combination of physical and numerical modeling is a good solution for research on the basic characteristics of rock mass deformation and failure of high-steep slopes during transformation from deep open-pit to underground mining.

关键词： transformation from deep open-pit to underground mining high steep slope deformation and failure similar material model experiment FLAC software

作者: SONG Weidong WU Shan DU Jianhua WANG Xin

作者单位: School of Civil and Environmental Engineering, University of Science and Technical of Beijing, Beijing 100083, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 2161-2168

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）