bolt roof

基本解释

After all of the loads applied to the roof bolt are obtained, its stress calculation is solved by using the finite element method.
求得作用在顶枢锚杆上的荷载，然后对锚杆采用有限元法进行应力计算。
By computer simulation, we analysis and study the law of wall rock stress distribution, deformation , the axial force of bolt and the roof-off-strata.
通过计算机数值模拟分析研究了锚杆支护回采巷道围岩应力分布、围岩变形、锚杆轴力及顶板离层规律。
When constructing on super section lane, combining roof bolt, anchor cable, anchor cable series, is scientific and reasonable, can achieve good effect.
超大断面巷道施工，采用锚杆、锚索、锚索组联合支护，科学合理，实现了安全高效的良好效果。