Characteristics and chain-generated processes of extreme rainfall-induced geohazards in the upper reaches of the Juma River [PDF]
From July 29 to August 2, 2023, a historically rare extreme rainfall event occurred in North China, which triggered a large number of geohazards in the mountainous areas of western Beijing and Hebei, resulting in serious casualties and property losses ...
Changxu TAO +4 more
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Interpretable landslide susceptibility evaluation using a BP neural network model optimized by multiple algorithms [PDF]
Current landslide susceptibility evaluation methods predominantly rely on statistical techniques and machine learning models, both of which are prone to errors related to sample quality and parameter selection.
Hao LU +4 more
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, 2021 火后泥石流由起动条件的不同可以分为表面径流型火后泥石流和浅层滑坡型火后泥石流。由于表面径流型火后泥石流 多发生于火灾后的前两年，水土流失严重，灾害效应明显，因此，大多数研究集中在表面径流型火后泥石流。然而，对于火灾 较长时间后发生的浅层滑坡型火后泥石流，现有研究相对较少，这制约了人们对于浅层滑坡型火后泥石流起动条件和起动机理 的认知。与表面径流型火后泥石流相比，浅层滑坡型火后泥石流的形成主要是由于根-土强度的退化导致。因此，定量测定火灾 后根和土强度的衰减，是了解浅层滑坡型火后泥石流机理的必要条件 ...
倪钧钧, 崔一飞, 李尧, 雷鸣宇
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Analysis of the characteristics and development trends of the “7•5” catastrophic debris flow in Xiangjiao gully, Muli County, Sichuan [PDF]
On July 5, 2021, a catastrophic debris flow disaster occured in Xiangjiao gully, Muli County, Sichuan Province. This study analyzed the formation conditions, eruption process and eruption characteristics of the debris flow through field investigation and
Hao SUN +4 more
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Strength and fracture evolution characteristics of high fill canal levee soil [PDF]
The splitting strength is one of the important factors affecting the stability of soil slope. Due to the different water sensitivity of different soils, the strength and deformation of soils under different water contents are different.
Huaichang YU +4 more
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Controlling influence of the “perched water structure” on rainfall-induced landslide: A case study of the Yaogou landslide in Zhushan County, Hubei Province [PDF]
The Yaogou landslide, located in Zhushan County, Hubei Province, exhibits distinctive aquifer characteristics and varying permeability, leading to the retention of groundwater within the landslide after rainfall, forming confined water.
Lihua LI +3 more
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Analysis of the rainfall threshold for post-fire debris flow initiation: A case study of the debris flow at Ren’eyong gully in Xiangcheng County, Sichuan Province [PDF]
In the early summer of 2014, a wildfire ravaged the Ren’eyong valley in the central Mt. Hengduan region of southwestern China. Following the blaze, debris flows were triggered three times in branch No. 3 due to short-term, low intensity rainfall.
Guisheng HU +4 more
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, 2008 文章简要评述了地质灾害基础理论与应用技术发展现状、滑坡灾害多种监测预报判据的利弊。利用综合信息处理决策方法,提出了基于权变理论的滑坡灾害监测预报新思路。分析了滑坡成灾的权变特征、环境因素和决策因素,建立了滑坡灾害预报决策概念模型。进一步探讨了在预报决策中应遵循的动态性及满意性原则 ...
俞登荣, 胡华
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Vulnerability assessment of landslide hazards based on hazard intensity at slope level: A case study in Xiangxiang County of Hunan [PDF]
Taking a slope as a unit, the regional vulnerability assessment based on potential disaster intensity is one of the important problems to be solved urgently. In this paper, the city of Xiangxiang in Hunan is selected as the research area. On the basis of
Bin CHEN +5 more
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Slope Aspect Differentiation of Pisha Sandstone Slide Erosion and Its Response to Meteorological Factors [PDF]
[Objective] As a typical mode of gravity erosion in the Pisha sandstone area, debris sliding has become a significant source of coarse sand material within gullies, seriously threatening the ecological security of the basin.
LI Long +4 more
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