| Our country is rich in mineral resources,many kinds and wide distribution,but mine mining leaves a large number of goaf,which not only make mine normal production safety hidden trouble,reduce the mining utilization ratio of mine resources.Moreover,the surface collapse caused by the goaf destroys the constructive nature of the surface soil resources,which is not conducive to the development of commercial and social activities in the near surface strata of the goaf.This study is based on the Beibu Coal Mine of Laiwu City.The underground goaf of this mine is selected as the main research object,and the regional geological background,geological environment conditions,hydrogeology,engineering geological conditions are analyzed.The influence of geological structure and human activities on geological environment is grasped.Through field investigation,core drilling and other engineering means,the influence law of caving collapse in the study area is found out,and the roof and floor of goaf are verified.The influence radius method and probability integration method are used to calculate the deformation range of the ground subsidence in the study area,and the parameters of the surface movement deformation are calculated,and the interaction between the goaf and the engineering construction is analyzed and calculated.This paper analyzes the comprehensive influence of goaf on geological environment,and finally determines the zone of geological environment influence.According to the characteristics of mined-out subsidence in the study area,the paper puts forward the control measures of mined-out area and the key points of building design,which provides the basis for the planning and management of mining land. |
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