Formation Mechanism and Stability Analysis of Qinjiatian Landslide of Qingjiang River Basin

YAN Ju-Sheng; TAN Jian-Min; ZHANG Yu

doi:10.3969/j.issn.2097-0013.2024.01.012

2024 Vol. 40, No. 1

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Article navigation > South China Geology > 2024 > 40(1): 162-170

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YAN Ju-Sheng, TAN Jian-Min, ZHANG Yu. 2024. Formation Mechanism and Stability Analysis of Qinjiatian Landslide of Qingjiang River Basin. South China Geology, 40(1): 162-170. doi: 10.3969/j.issn.2097-0013.2024.01.012

Citation:

YAN Ju-Sheng, TAN Jian-Min, ZHANG Yu. 2024. Formation Mechanism and Stability Analysis of Qinjiatian Landslide of Qingjiang River Basin. South China Geology, 40(1): 162-170. doi: 10.3969/j.issn.2097-0013.2024.01.012

Formation Mechanism and Stability Analysis of Qinjiatian Landslide of Qingjiang River Basin

Wuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China),Wuhan 430205, Hubei, China

Received Date: 20 May 2023

Revised Date: 27 July 2023

Abstract

Abstract

Qinjiatian landslide, located in Geheyan Reservoir area of Qing River basin, is a representative of the slip of limestone along the soft interlayer in the slope area. The deformation of leading edge of the bank is obvious after water storage, and its stability is directly related to the safety of 12 people from 3 families and the normal operation of the Geheyan reservoir. By means of field investigation, engineering geological surveying, drilling and trenching, the formation conditions of the landslide are found out , the formation evolution and mechanism of the landslide are analyzed, and the stability of the landslide is calculated by using the limit equilibrium analysis method. The results show that the stability of the landslide is relatively well and mainly affected by external dynamic factors such as rainstorm, fluctuation of reservoir water level, etc. , however, under the condition of heavy rainfall and sudden drawdown of reservoir water level, the stability coefficient decreases and local collapse may occur.
- Qingjiang river basin /
- Qinjiatian landslide /
- formation mechanism /
- stability analysis

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References

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