水浸基底条件下排土场边坡稳定性的相似模拟

Similar simulation of dump slope stability under water immersing basement condition

基底浸水条件下降低了土体抗剪强度进而危及边坡稳定。通过相似模拟试验对阴湾排土场基底不同含水量下边坡失稳的发生发展规律进行了研究,分析了水浸基底边坡的变形机理和破坏模式。结果表明,黄土基底含水量的持续增加会直接引起边坡的破坏失稳,变形模式为后缘依附淤泥质黄土与天然黄土分界面的整体滑动。

Under basement flooding conditions, the soil mass shear strength is lowered, which endangers slope stability. By similar simulation experiment, the article studies the occurrence and development regularity of slope instability under different water content in Yinwan dump basement, and analyzes the deformation mechanism and failure mode of slope under water immersing basement. The result shows that continuous increase of loess basement water content can directly cause destruction and instability of slope, whose deformation mode is the whole sliding trailing edge attachment to the interface between argillaceous loess and the natural loess.