Research on Application of Controlling Technology for Surrounding Rocks in Deep High-Stress Soft Rock Roadway
For severe deformation and damage of deep roadway of 80113 working face in Jude Mine,we find the roof of roadway is 5.0 m away from the seam fracture development range through drilling holes and observation on surrounding rocks.With the help of value simulation software FLAC3D,the article determines the reasonable length of the grouting anchor cable is 7.0m and the pretension force for the anchor cable is 250 kN to 350 kN.The enhance supporting plan is designed.The field application shows that with the refined supporting parameters the overall deformation of the roadway is under the control effectively,meeting the requirements from mines for safe and efficient production.
high stressFLAC3D value simulationdeep roadwaygrouting anchor cable
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