高位滑坡动力学特征分析

doi:10.11799/ce202211029

摘要/Abstract

摘要： 高位滑坡具有孕灾过程隐蔽，急剧发生、动力冲击和远程成灾等特点，以菲律宾Guinsaugon滑坡为例，基于研究区的工程地质条件，进行滑坡运动路径分区，同时通过基底流变模型Friction-Voellmy-Friction模型组合反演了滑坡运动全过程。结果显示，Guinsaugon滑坡运动时长约为90s，在水平距离X=1896m处时的运动速度为最大，约为52.95m/s，堆积体的平均厚度约为15～20m，最远运动距离约为4100m，与雪橇模型相比，基底流变模型的反演结果与实际情况更为相近，最后讨论分析了Guinsaugon滑坡主要以楔形体撞击地面呈现碎屑流的运动模式。

关键词: 高位滑坡, 动力学模型, 数值模拟, 菲律宾Guinsaugon滑坡

Abstract: High-locality landslide has the characteristics of hidden disaster process, rapid occurrence, dynamic impact and long runout distance, which seriously endangers the safety of people's lives and property. Taking the Guinsaugon landslide as an example, based on the engineering geological conditions of the study area, and landslide movement path zoning has been carried out. What’s more, the landslide movement process is inversed through the combination of the basement rheological model friction voellmy friction model. The results show that the movement duration of guinsaugon landslide is about 90s, and the maximum movement speed is about 52.95m/s at the horizontal distance x = 1896m. The average thickness of the accumulation body is about 15-20m, and the farthest movement distance is about 4100m. The calculation results are similar to the actual situation. Finally, the movement mode of debris flow in guinsaugon landslide is discussed and analyzed. The above research provides reference for similar high-locality landslide disaster research in China.

中图分类号:

P642. 22

徐杨青, 乔龙腾, 杨龙伟, 等. 高位滑坡动力学特征分析[J]. 煤炭工程, 2022, 54(11): 164-169.

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