Risk Assessment Of Landslide In Mining Subsidence Area

With the rapid development of social economy,the energy consumption is increasing day by day,and the continuous development of mining industry leads to frequent geological disasters in mining and subsidence areas.Therefore,it is necessary to evaluate the risk of collapse and other large geological disasters in mining and subsidence areas,predict the regional stability in advance,and reduce casualties and property losses in mining and subsidence areas,which has a certain practical significance.This paper studies the deformation and failure law of overlying strata disturbed by mining and the deformation and failure law of mining slope,analyzes the deformation and failure mechanism and influencing factors of underground mining slope,and carries out regional risk assessment of landslide geological disasters in mining subsidence area based on the geological situation of the study area(1)Based on the deformation and failure law of overburden,the failure mechanism of mining subsidence slope is studied.The mechanical model is used to reveal the deformation mechanism of overburden rock in the process from mining to stoping.After the slope is disturbed by mining,the complex deformation and movement of overburden rock occur,and then spread to the surface.How the mining factors act on the slope is analyzed,and the influencing factors are analyzed.(2)The failure of mining subsidence slope not only conforms to the characteristics of general slope,but also has its particularity;In this paper,based on the general slope risk assessment process,starting from the purpose of assessment,aiming at the particularity of mining subsidence slope,the risk assessment of landslide geological disaster in mining subsidence area is carried out.(3)Taking Wengfu mining area in Fuquan City as an example,the risk assessment of collapse and slide in mining and subsidence area is carried out from the regional scale.Following the general slope evaluation process,in order to reflect the characteristics of mining subsidence slope,the influence of ore bed itself on the regional susceptibility should be reflected in the susceptibility evaluation;After the slope is strongly mined,the degree of regional danger caused by mining intensity is analyzed;The types and distribution of disaster bearing bodies in the area are investigated,the disaster consequences are evaluated,and the risk level of regional landslide is divided.