Mudstone landslide in the Zushi Formation of the Miura Group.

Kanie, Yasumitsu; Yanagida, Makoto; Tanaka, Takenobu

doi:10.5575/geosoc.102.762

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“…It covers Sichuan, Yunnan, Guizhou, and other provinces, and the research is of great significance. The "red layer" has poor compression strength, shear resistance, and low mechanical strength [29]. The long-term interaction between mudstone and water results in a significant change in its physical and mechanical properties, leading to the argillization and softening of the mudstone, leading to landslide disasters occur frequently and endanger the safety of the surrounding environment.…”

Section: Study Area Descriptionmentioning

confidence: 99%

Research on Internal Structure and Mechanism of Landslide Based on Hydrogeophysical Investigation (Quan’an Landslide, Southwest China)

Wang

et al. 2022

Geofluids

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The survey area is located in the planning area of Longquan national urban park, with frequent human activities, numerous water conservancy, transportation projects, and frequent geological disasters such as landslides. The Red Mudstone has low strength and easy to soften in the case of water, and it is very prone to landslide in rainy season. At present, there are many studies on Red Mudstone Landslides, but most of them are analyzed by geological means, and the monitoring process is also dominated by surface deformation and settlement; there is less analysis with hydrogeological that is caused by rainfall and human activities. For Red Mudstone Landslides, to effectively reveal and analyze the process of the Slip Mechanism, we need to carry out the characteristics of hydrogeological structure and underground physical structure, and compare with surface monitoring and point geological structure. In this study, a one-year field survey and hydrogeophysical survey were carried out. Combined with the characteristics of environmental geology, the geophysical forward modeling problem based on finite element method was used to verify the influence of rainfall on the electrical characteristics of underground media. The smoothness constrained least square method and three-dimensional unstructured grid method are used to interpret the ERT data, analyze the abnormal patterns of electrical structure of landslide in different seasons, and correspond well with the GPR data. According to the characteristics of surface vegetation and weathering, as well as the displacement and settlement monitoring after landslide, the spatial characteristics of red bed landslide are revealed, and the relationship between landslide, rainfall, and human activities is clarified.

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Section: Study Area Descriptionmentioning

confidence: 99%

Research on Internal Structure and Mechanism of Landslide Based on Hydrogeophysical Investigation (Quan’an Landslide, Southwest China)

Wang

et al. 2022

Geofluids

View full text Add to dashboard Cite

show abstract

Mudstone landslide in the Zushi Formation of the Miura Group.

Cited by 1 publication

References 0 publications

Research on Internal Structure and Mechanism of Landslide Based on Hydrogeophysical Investigation (Quan’an Landslide, Southwest China)

Research on Internal Structure and Mechanism of Landslide Based on Hydrogeophysical Investigation (Quan’an Landslide, Southwest China)

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