|
Abstract Based on the severe floor heave,sidewalls swelling and rib spalling problems of the important engineering such as water pump house,power distribution chamber,sump in sixth mining area of Lingxin Mine,the affecting factors of surrounding rock deformation and destruction in roadway were obtained. Combing the controlling principle of surrounding rock in deep roadway,the support technology of anchor net spray and fully closed hardwired U-type steel frame combined with the inverted arch beam was creatively put forward. The technology was successfully applied in practice,provides a good solution for similar situation in future.
|