- 期刊
Deep Underground Engineering Working Face Deformation Mechanism
摘要
With the excavation of many deep underground projects, it is very important to study the deformation of the working face, so the numerical model is established by FLAC3D software, and the extrusion displacement, working face plasticity zone, and working face pre-convergence displacement of the palm surface of the deep underground project are analyzed with the help of Origin data software. The results show that the extrusion displacement of the working face and the pre-convergence in front of the working face can be determined by numerical simulation with the decrease of the surrounding rock level, the increase of burial depth, the increase of lateral pressure coefficient and the increase of moisture content. The surrounding rock only has tensile damage or pull shear damage in the arch waist and the local area of the working face, and the tensile damage and pull shear damage area of the surrounding rock are mainly concentrated in the arch shoulder, arch foot, and working face edge part, and most of the working face is subject to shear stress.