CHEN Hao, REN Wei-zhong, SHU Zhong-gen, et al. Model test study and numerical analysis of mechanism of anchor bolt under different supporting conditions[J]. 2012, 33(S1).
CHEN Hao, REN Wei-zhong, SHU Zhong-gen, et al. Model test study and numerical analysis of mechanism of anchor bolt under different supporting conditions[J]. 2012, 33(S1).DOI:
According to rock character of a certain soft rock tunnel of Chongqing to Changsha highway
similar model materials and supporting test equipments are developed to reproduce the whole process of progressive failure of surrounding rock under different supporting conditions. Through solving a series of technological matters in execution and installation and testing
by using the strain measuring technology
the strain of key parts of the surrounding rock under different supporting conditions are measured; according to this
the variability of the stress of surrounding rock are studied. By model materials laboratory determining the related parameters of rock mass
the numerical simulation are worked with the same boundary condition as the model test
according to this
the stress field and the deformation of the surrounding rock are studied; the variation of the axial force of the anchor bolt is studied. We compare the variation of stress of the surrounding rock and the variation of the axial force of the anchor bolt under different supporting conditions of the model test with the numerical simulation and draw the conclusion that the two processes coincide with each other.