Optimisation of the Process and Support Parameters for the Retention of the Tunnel along the Open Space of a General-Purpose Working Face
In order to improve the recovery rate of coal resources and alleviate the problem of mining succession tension,it is proposed to apply the technology of retaining the roadway along the air to the 3503 trackway,so that the roadway can be retained to serve the production of the neighbouring mining face.For the problem of large deformation of the top plate and gangs in the reserved section,it is proposed to adopt the anchor cable reinforcement+roadside filling method to optimize the process and support parameters of the reserved roadway,and after the field application,the force of anchor rods,anchor cables and concrete retaining walls in the reserved section of the 3503 trackway is more balanced,and there is no failure of the support system,and the maximum convergence of the top and bottom plates of the roadway and the two gangs is 105 mm and 73 mm,respectively,and the deformation of the surrounding rock is small,achieving a good optimization effect.The overall deformation of surrounding rock is small,and a good optimisation effect is achieved.
coal miningthick coal seamalong the empty roadwayperimeter rock support
NETL
NSTL
万方数据
维普
