兰尖铁矿矿石运输平硐局部失稳机理分析

Analysis of Local Instability Mechanism Ore Hauling Tunnel in Lanjian Iron Mine

通过现场地质调查,结合现场实际情况进行针对性的地下运矿平硐爆破震动测试以及平硐断面收敛测量,借助非线性弹塑性有限元数值分析手段,揭示了该运矿平硐发生局部失稳的破坏机理,为该段后续加固工程设计提供了有利依据。

According to the on-site geological investigation and the real conditions of the underground tunnel for ore hauling, the test on blast vibration and the measurement of the tunnel sectional convergence were made. The failure mechanism of local instability of this tunnel was revealed by means of non-linear elastoplastic finit element numerical analysis method, providing a beneficial basis for the design of the subsequent strengthening engineering.