@inproceedings{3543124774a1489692d624ad03d42b77,
title = "Influence of unsaturated hydraulic parameters of colluvium on large-scale landslide stability analysis",
abstract = "Groundwater in large-scale landslides usually flows along the colluvium's bottom, so the colluvium is unsaturated. The unsaturated hydraulic parameters will control the infiltration and seepage behavior after rainfall. Considering the contribution of unsaturated hydraulic parameters will help explain the sliding mechanism and stability of the landslide. In order to clarify the influence of the unsaturated hydraulic parameters of the colluvium on the stability analysis of large-scale landslide, this paper takes the Fanfan site as an example, takes samples of the colluvium for pressure plate test, and uses the Fredlund and Xing (1994) model to fit the soil-water characteristic curve. This paper conducts sensitivity analysis of the parameters (a, n, and m) in the model and performs feedback analysis with on-site hydrological observation data to calibrate the above parameters. Finally, this paper considers the parameter mentioned above scenarios to conduct a stability analysis and discusses the sliding mechanism and stability of the Fanfan site through the changes in shallow soil water content, deep groundwater level, and safety factor. Overall, the sensitivity analysis and calibration procedure of unsaturated hydraulic parameters proposed in this paper help clarify the unsaturated characteristics of colluvium and their contribution to large-scale landslides' stability.",
keywords = "groundwater level, colluvium layer, water content groundwater level, Unsaturated hydraulic parameters, fluence, fanfan site, stability analysis, rainfall, upstream oil & gas",
author = "Chung, {Ming Chien} and Chen, {Chien Hsin} and Tan, {Chih Hao} and Wei-An Chao and Tai, {Tung Lin}",
note = "Publisher Copyright: {\textcopyright} 2021 by the International Society of Offshore and Polar Engineers (ISOPE).; 31st International Ocean and Polar Engineering Conference, ISOPE 2021 ; Conference date: 20-06-2021 Through 25-06-2021",
year = "2021",
month = jun,
day = "20",
language = "English",
isbn = "9781880653821",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "International Society of Offshore and Polar Engineers",
pages = "1398--1405",
booktitle = "Proceedings of the 31st International Ocean and Polar Engineering Conference, ISOPE 2021",
address = "美國",
}