爆破荷载作用下边坡渐进破坏模式的UDEC模拟研究

运用二维离散元程序UDEC，以黄麦岭磷矿采场边坡为例，模拟了爆破荷载作用下层状岩质边坡渐进破坏的全过程。结果表明，爆破荷载作用下岩质边坡的破坏，是一个由潜在滑动面上的局部破坏逐步扩展到整体破坏的过程，同时也是一个滑动面上拉剪应力传递与转移的过程，其变形破坏过程可分为累进破坏和整体滑动两个阶段。

UDEC Simulation of Progressive Failure of Rock Slope Under Explosion

The progressive failure process of rock slope in Huangmailing phosphate mining under explosion is simulated by discrete element code UDEC. Results show that the failure of rock slope is from the local sliding face to the whole slope. At the same time, the failure process is the process of transmitting and transferring the tensile and shear stress. And the failure of slope is divided into two phase： the progressive failure phase and the whole sliding phase.