Keyword [hard and thick roof] Result: 1 - 4 | Page: 1 of 1 1.  The Study Of Law Of Stope Pressure Before And After The Hard And Thick Roof Is Weakened 2.  Research And Application Of Fracture Law And Deep Hole Presplit Blasting Weakening Technology In Hard And Thick Roof 3.  Stress Concentration Degree Of Island Pillar With Hard And Thick Roof In Extremely Thick Coal Seam And Rock-burst Prevention By Staggering Floor Layoutt 4.  Study On The Disaster-Causing Mechanism And Control Criteria Of The Hard And Thick Roof Strata Based On Medium Thick Plate Theory   <<First  <Prev  Next>  Last>>  Jump to

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