Tunnel surrounding rock is a complicated comprehensive system, various parameters have the very big indetermination, and therefore, the reasonable obtainment of its mechanics parameters is the important factor for promoting the development of tunnel engineering. Based on BP neural network, combined with the actual project, two monitoring cross-sections are set at side-expanding section to monitor the deep displacement of surrounding rocks, and acquires the numerical data for arch crown settlement and the horizontal convergence of the tunnel inner perimeter resulted from one-sided excavation. T...
