Geotechnics for Hazard Mitigation, 2nd Edition

Topic Information

Dear Colleagues,

Among all the geological disasters (GDs), collapses, landslides, and debris flow are the most serious. The prediction of geological disasters is the most effective means to reduce casualties and property losses. However, early identification and warning technology for collapses have been difficult to achieve effectively. Therefore, the scope of this research topic is about the quantitative identification of dangerous rock, the risk assessment of landslide instability precursors, the quantitative model of a movable solid source in a debris flow source area, the application of research on new monitoring and early warning technology systems, and the corresponding control and reinforcement measures. In addition, this Topic also welcomes papers of remote sensing technologies (e.g., InSAR, LiDAR, and multispectral/hyperspectral imagery) in early detection of precursory deformation, large-scale hazard mapping, and real-time monitoring of landslides, rockfalls, and debris flows. Submissions exploring how advanced remote sensing approaches can effectively bridge field-scale observations and regional risk assessment are particularly encouraged. We cordially invite relevant scholars to submit their research findings to the article collection of this Topic, which will hopefully improve the early warning technology of GDs and serve as a platform for the exchange of knowledge and the discovery of new innovations. The subtopics include but are not limited to the following:

• Rock dynamics and failure precursor of rock collapse.
• Quantitative dynamic damage identification of unstable rock or rock landslides.
• Analysis of the causative mechanism and disaster-causing factors of GDs.
• Risk and stability assessment method for GDs.
• Quantitative model of movable solid source in debris flow source area.
• Application research of new monitoring technology for GDs and establishment of the early warning index system.
• The corresponding control and reinforcement measures for GDs.

Prof. Dr. Mowen Xie
Dr. Yan Du
Prof. Dr. Yujing Jiang
Prof. Dr. Bo Li
Dr. Xuepeng Zhang
Dr. Santos D. Chicas
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Applied Sciences applsci	2.5	5.5	2011	19.8 Days	CHF 2400	Submit
Geosciences geosciences	2.1	5.1	2011	23.4 Days	CHF 1800	Submit
ISPRS International Journal of Geo-Information ijgi	2.8	7.2	2012	34.2 Days	CHF 1900	Submit
Remote Sensing remotesensing	4.1	8.6	2009	24.9 Days	CHF 2700	Submit
GeoHazards geohazards	1.6	2.2	2020	17.2 Days	CHF 1400	Submit

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All Applied Sciences Geosciences IJGI Remote Sensing GeoHazards

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21 pages, 6814 KB  

Open AccessArticle

Urban Land Subsidence Analyzed Through Time-Series InSAR Coupled with Refined Risk Modeling: A Wuhan Case Study

by Lv Zhou, Liqi Liang, Quanyu Chen, Haotian He, Hongming Li, Jie Qin, Fei Yang, Xinyi Li and Jie Bai

ISPRS Int. J. Geo-Inf. 2025, 14(9), 320; https://doi.org/10.3390/ijgi14090320 - 22 Aug 2025

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Abstract

Due to extensive soft soil and high human activities, Wuhan is a hotspot for land subsidence. This study used the time-series InSAR to calculate the spatial and temporal distribution map of subsidence in Wuhan and analyze the causes of subsidence. An improved fuzzy [...] Read more.

Due to extensive soft soil and high human activities, Wuhan is a hotspot for land subsidence. This study used the time-series InSAR to calculate the spatial and temporal distribution map of subsidence in Wuhan and analyze the causes of subsidence. An improved fuzzy analytic hierarchy process (GD-FAHP) was proposed and integrated with the Entropy Weight Method (EWM) to assess the hazard and vulnerability of land subsidence using multiple evaluation factors, thereby deriving the spatial distribution characteristics of subsidence risk in Wuhan. Results indicated the following: (1) Maximum subsidence rates reached −49 mm/a, with the most severe deformation localized in Hongshan District, exhibiting a cumulative displacement of −135 mm. Comparative validation between InSAR results and leveling was conducted, demonstrating the reliability of InSAR monitoring. (2) Areas with frequent urban construction largely coincided with subsidence locations. In addition, the analysis indicated that rainfall and hydrogeological conditions were also correlated with land subsidence. (3) The proposed risk assessment model effectively identified high-risk areas concentrated in central urban zones, particularly the Hongshan and Wuchang Districts. This research establishes a methodological framework for urban hazard mitigation and provides actionable insights for subsidence risk reduction strategies. Full article

(This article belongs to the Topic Geotechnics for Hazard Mitigation, 2nd Edition)

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20 pages, 4185 KB  

Open AccessArticle

The Reactivated Residual Strength: Laboratory Tests and Practical Considerations

by Paolo Carrubba

Appl. Sci. 2025, 15(14), 7976; https://doi.org/10.3390/app15147976 - 17 Jul 2025

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Abstract

As is already known, some currently stable landslides may have been activated in the past along a pre-existing sliding surface and reached the residual strength there, as a consequence of high-cumulative displacements. After a fairly long period of quiescence, these landslides can reactivate [...] Read more.

As is already known, some currently stable landslides may have been activated in the past along a pre-existing sliding surface and reached the residual strength there, as a consequence of high-cumulative displacements. After a fairly long period of quiescence, these landslides can reactivate due to a temporary increase in destabilising forces capable of mobilising the residual strength along the same sliding surface again. Some recent studies have suggested that, under certain conditions, the strength mobilised upon reactivation may slightly exceed the residual value and then decay towards the latter as the displacement progresses. Regarding this matter, many previous studies have hypothesised that some geotechnical variables could affect the recovered strength more significantly: the length of the ageing time, the vertical stress, the stress history, and the speed with which the reactivation occurs. The aim of this research is to confirm whether such recovery of strength upon reactivation is possible and which geotechnical parameters have the greatest influence on the process. To this end, laboratory tests were carried out with the Bromhead ring shear apparatus on normally consolidated saturated samples of both natural soils and clays provided by industry (bentonite and kaolin). The coupling effect of the ageing time, the vertical stress, and the reactivation speed on the mobilised strength upon reactivation were investigated, starting from a pre-existing residual state of these samples. Within the limits of this research, the results seem to confirm that all three geotechnical variables are influential, with a greater impact on the reactivation speed and, subordinately, on the ageing time for long quiescence periods. Therefore, it is concluded that a quiescent landslide could show a reactivated strength slightly higher than the residual value if the destabilising action could arise with a certain rapidity. Conversely, if the destabilising action occurs very slowly, the mobilised strength could correspond to the residual value. The experimental results of this research may find some application in the design of strengthening works for a stable quiescent landslide that could experience a fairly rapid increase in destabilising actions, such as in the case of seismic stress, morphological modification of the slope, or a rising water table. Full article

(This article belongs to the Topic Geotechnics for Hazard Mitigation, 2nd Edition)

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