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巷道顶板围岩由于变形的不协调常常会产生单个离层或多个离层群。在单个离层弹性分析的基础上,根据叠加原理对离层群引起的锚杆应力分布进行了归纳,得出应力曲线为多峰曲线。通过对不同情况的参数分析,得出:离层值越大,离层位置越靠近边缘,离层对锚固体的荷载影响就越大。离层对锚固体剪应力的影响较大,锚固体界面会因离层值过大而产生滑移破坏。
Roadway roof surrounding rock often produce a single or multiple outlying groups due to the deformation of the uncoordinated. Based on the single delamination elastic analysis, the stress distribution of the bolt caused by the delamination group is summarized according to the principle of superposition, and the stress curve is obtained as a multi-peak curve. Through the analysis of parameters in different situations, it is concluded that the larger the value of detachment, the closer to the edge of the detachment, and the greater the influence of the detachment on the load of the anchor. The effect of delamination on the shear stress of the anchor is larger, and the interface of the anchor will slip damage due to the excessive delamination value.