Stability Analysis of Room and Pillar Stope of Marber Ore Body

According engineering technology of room and pillar stope of one marber ore body,with pillar and roof instability mechanism,and then the stability of pillar and roof were analyzed by some theoretical calculation,which include ultimate strength theory,partial load area method,thickness span ratio method and structural mechanics and so on.The results showed that the marber ore body was fully integrity and with highly strength,so the size that mining 10m and remain 8m could ensured secular stability.