Study on the Control Technology of the Surrounding Rock of the Roadway Under the Close Mining Area in Cilinshan Coal Mine
Aiming at the problems of poor stability of the return roadway under the near mining area of 9107 working face of Cilinshan coal mine,the top plate is easy to fall,etc.,combined with the engineering geological conditions of 9107 working face,the method of numerical simulation was used to determine a reasonable distance of 10～20 m for the inner error of the return roadway in the near mining area of 8#coal seam and 9# coal seam,the results of field monitoring can be obtained,the deformation of the surrounding rock of the roadway tends to be stable after 10 d.The maximum settlement of the top plate is about 88 mm,the maximum bottom drum of the bottom plate is about 23 mm,the maximum displacement of the two gangs is 185 mm,and the stability of the surrounding rock is effectively controlled.
proximity mining areasurrounding rock controlinternal error distance
NETL
NSTL
万方数据
