Study on Deformation Characteristics and Stability Control of Surrounding Rock of Gob Retaining Roadway
Taking the geological conditions of excavation along the goaf in a certain mining face as the object,FLAC 3D software was used to simulate the damage of the surrounding rock in the goaf,including the excavation period,primary mining,stable excavation period,and secondary mining impact period.It was found that the deformation of the surrounding rock was relatively large.Therefore,in order to effectively control the stability of the surrounding rock,advanced support for the roof is adopted for the safety gap,additional anchor cables are used to strengthen the support for non mining slopes,and steel mesh,steel ladder beams,and tension anchor rods are used to strengthen the support for the filling body.The stress on the roof is optimized using shallow hole blasting and top cutting pressure relief technology.
gob retaining roadwayadvance supportblasting and top cutting pressure relief
NETL
NSTL
万方数据
维普
