Field experience and similar material simulation indicate that there is the bending catastrophe phenomenon of anchor roof beam in bolting roadway sometimes.
现场经验及模型实验表明，煤巷锚杆支护中有时出现锚固体的弯曲突变失稳现象。
The analytical solution of the wall rock stress field and displacement field under the highly stressed bolting support is deduced by the displacement and stress boundary conditions.
利用位移及应力边界条件，导出了高强预应力锚杆支护下的围岩应力场、位移场解析解。
The analytical solution of the wall rock stress field and displacement field under the highly stressed bolting support is deduced by the displacement and stress boundary conditions.
利用位移及应力边界条件，导出了高强预应力锚杆支护下的围岩应力场、位移场解析解。
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