中文摘要：

用离散元法（DEM）进行了一系列数值模拟试验,模拟不同参数（内摩擦角,缓冲区长度,圆柱形结构物直径）的崩塌体在滑道上滑下与坡底前的圆形构筑物作用,再现了崩塌运动—堆积过程,揭示了崩塌对沿程工程结构的冲击机理,为潜在崩塌危害区域预测和防治提供理论支持。

英文摘要：

The paper undertakes a series of numeric simulation test with the Discrete Element Method （ DEM）, simulates various parameter of rock fall hazardous mass including internal friction, buffer length, and diameter of cylindrical structures on the circular structures in its sliding a- long sliding ways and before the slope bottoms, displays the collapsing movement and accumulation process, and reveals the impact mechanism of the collapse on surrounding engineering structures, provide some theoretic support for the prevention and prediction of the fall hazardous areas.