Stress Distribution Law of Full-Length Anchorage Bolt in Rectangular Roadway

To study the evolution law of axial force and shear stress a full-length anchorage bolt in rectangular roadway during driving working face mining, based on analysis bolt, considering elastic parameters geometric size effect bearing plate surrounding rock, cross-section shape, deformation degree, parameters, mechanics mathematical methods were used to establish mechanical model describing interaction between formulas for calculating derived. Taking mining 1,131(1) Zhujidong coal mine Huainan area as engineering background, middle roof side with advance analyzed. The theoretical results are verified by installing measuring bolts same properties field observing real distribution bolts.