Surrounding rock control technology of large-section roadway affected by structural stress disturbance
In order to solve the serious deformation of 9105 working face roadway,and considering its structural stress-affect-ed engineering conditions,the major deformation characteristics of the large-section roadway is analyzed by numerical simu-lation and in-site monitor.The control measure of the surrounding rock is studied,and a joint support strategy is put forward combining fitting of high-strength rebar anchor and prestress anchor cable+fitting of metal net and U-shaped shed.The ap-plication and monitor show that closeness between roof and floor,and closeness between tow sides,are reduced by 48.1％and 55.4％,respectively,resulting in the decrease of deformation of surrounding rock,achieving a good application effect,and ensuring the safe production of the mine.
roadway surrounding rockstructural stresssurrounding rock deformationjoint support
万方数据
维普
