Projects(51304125,51379114)supported by the National Natural Science Foundation of China;Project(BS2013NJ004)supported by Award Fund for Outstanding Young and Middle-Aged Scientist of Shangdong Province,China;Project(201301004)supported by the Innovation Fund for Postdoctor of Shandong Province,China
In deep underground mining, the surrounding rocks are very soft with high stress. Their deformation and destruction are serious, and frequent failures occur on the bolt support. The failure mechanism of bolt support i...