Surrounding Rock Characteristics and Control Techniques of Composite Soft Rock Roadways in Shanghai Miao Mining Area
The poor occurrence conditions of coal seams in the Shanghai Miao mining area,strong water content of rock layers,poor rock cementation,and low strength have caused problems such as low excavation efficiency,large deformation of tunnel surrounding rocks,and slow mining speed of working faces,seriously affecting stratogies the safety,efficiency,and green mining of the mine.The characteris-tics and deformation mechanism of soft rock roadway surrounding rock in mines are analyzed through theo-retical analysis,laboratory experiments,on-site measurements,and other means.It proposes the orater control techniques and surrounding rock for soft rock roadway are proposed.Through on-site experiments,the control techniques which provides certain on-site experience for soft rock roadway surrounding rock control.
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