沛北地区建设用地采空区稳定性评价及治理措施分析OA

A detailed stability evaluation and suitability analysis were conducted for the construction project above the goaf of a coal mine at Pei county north area of Xuzhou.Based on site engineering geological conditions,combined with coal seam occurrence information and mining data,the goaf stability was comprehensively evaluated by calculating goaf impact range,analyzing mining conditions,calculating surface movement and deformation values,and analyzing coal(rock)pillar stability.The foundation stability and suitability for the construction project were also evaluated by analyzing goaf impact on the proposed buildings and the impact of the proposed project on the further collapse and fracture of goaf.According to the calculation results,the goaf stability and suitability for the construction project were divided into two zones:the suitable zone,namely stable zone(Zone I),and the basic suitable zone,namely basic stable zone(Zone II).Finally,considering the risk of engineering construction above goaf,treatment measures are proposed from the aspects of architecture,structure,foundation,deformation observation,etc.,to provide effective basis for foundation design.