Surface subsidence properties and safety evaluation in scale exploitation of gently inclined ore body
When exploiting resources under buildings, it is necessary to evaluate ground subsidence caused by exploitation and its impact on buildings to ensure buildings safety. Considering the gently inclined feature of Tongkeng Mine Zinc Ore Body, taking No. 95 ore body as the research object, using ANSYS software to numerically simulate the large scale mining, the law of surface movement and deformation after mining has been obtained and the study on ground subsidence properties taking the surface tilting, curvature, and horizontal deformation as evaluation indices was carried out in this article. Simulation results show that the maximum value of vertical displacement caused by scale exploitation is 0.2m, and the maximum value of tilting, curvature and horizontal displacement are 0.284m m/m, 0.033mm/m2, 0.273mm/m respectively, which are much lower than our building protection standard level. It is suggested that the impact of large scale mining in No.95 ore on the surface building is not obvious.
mining subsidence surface deformation numerical simulation large scale mining
Jian-Hua HU Yu-Lin NING Xian-Wei LUO Ke-Pin ZHOU LEI Tao
School of Resources and Safety Engineering Central South University Changsha, China
国际会议
2011 International Conference on Security Science and Technology(ICSST 2011) (2011年安全科学与技术国际会议)
重庆
英文
42-46
2011-01-21（万方平台首次上网日期，不代表论文的发表时间）