摘要
以山阳县某滑坡为研究对象,运用FLAC-3D数值模拟软件建立三维空间数值模型,分析该滑坡在天然工况和饱水工况下的位移场、应力场等分布规律。研究表明,在天然工况下,该滑坡处于基本稳定状态,不会出现瞬时失稳滑动;在饱水工况下,该滑坡处于失稳状态,容易出现瞬时失稳滑动。计算结果与现场实际勘察分析结果相吻合,说明所建立模型及参数取值是符合实际的。
Taking a landslide in Shan Yang County as the research object,using FLAC-3D to establish a three-dimensional numerical model,through the analysis of complex three-dimensional landslide displacement field,stress field,plastic zone distribution,combined with the landslide of the typical profile of stress,strain,landslide stability that in the natural state landslide is stable.The results show that in the natural state,the landslide is in a state of steady state and does not appear to fluctuate instantaneously.In the saturated state,the landslide is in a state of instability and prone to transient and unstable slip.The calculation results are also consistent with the spot geological surveys which prove the appropriateness of parameters choosing.
关键词
滑坡
稳定性
数值模拟
landslide
stability
numerical simulation
