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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 Sanyang County as an example, a three-dimensional numerical model was established by using FLAC-3D numerical simulation software to analyze the distribution of displacement and stress fields under natural and saturated conditions. The study shows that under natural conditions, the landslide is in a basically steady state, and instantaneous instability slips do not occur. Under full water conditions, the landslide is in a state of instability and is prone to instantaneous instability sliding. The calculated results are in good agreement with the actual field investigation and analysis results, indicating that the established model and parameter values are in line with the actual conditions.