Rock Burst Risk Evaluation of Island Working face Cut-hole on Tunnel Excavation

Taking 23070 island working face cut-hole tunneling in Yuejin Coal Mine as the engineering background, the tunneling process was simulated, and stress evolution rule and plastic area distribution were numerically analyzed by using FLAC^3D numerical analysis software. On this basis, combined with the engineering geological conditions of site, rock burst region was evaluated during tunneling process. And then, the measures to solve the crisis was put forward, the rock-burst danger of coal and rock mass under concentrated stress during tunneling process was avoided.