%0 Dataset
%T Statistics of geological effects in Pingshuo mining area, Shuozhou City, Shanxi Province (September 2019)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/158c3043-0acd-4004-bd52-563bf28e4a10
%W NCDC
%R 10.12072/ncdc.UTCMW.db2119.2022
%A Wu Xiaoli
%K Pingshuo mining area;ground collapse;geological effect
%X The field survey results show that there are 172 geological effect points caused by coal mining activities in Pingshuo mining area, including 17 ground collapse groups, 8 slope instability groups and 196 ground fissures. The total area of geological effect is 654.77hm 2. Analytic hierarchy process can accurately identify the importance of the influencing factors of ground collapse, and give the weight of each factor. The influencing factors of ground collapse include human factors and natural factors. Combined with the actual situation of Pingshuo mining area, two kinds of influencing factors are selected for analysis: human factors (including goaf scale, mining depth and thickness, mining method and roof management method) and natural factors (including hydrogeological conditions, tectonic stress, overburden structure and hardness, coal seam inclination). Through analytic hierarchy process and consistency test, it is concluded that the ground collapse in Pingshuo mining area is mainly controlled by three aspects: mining depth thickness ratio, goaf scale and overburden structure and hardness, and the weight values are 0.469, 0.188 and 0.114 respectively. Therefore, it can be judged that the main control factor of ground collapse in Pingshuo mining area is human factors. When making production planning, the land and resources department and coal production units should focus on the impact of surrounding coal mine goaf.In view of the impact of the excavation progress of open pit mining area on the open-pit slope, an ideal model of open pit mining in Pingshuo mining area is established through FLAC3D program, and the constitutive model is Moore Coulomb model. The model is established according to the geotechnical mechanical parameters of each layer. The simulation results show that the slope mainly has settlement deformation under the action of open-pit mining, and the goaf is gradually formed with the mining of mine.