Stability analysis and hazard prediction of dangerous rock masses in karst mountainous area:  A case study of Changchong dangerous rock mass in Songtao County, Guizhou Province

WANG Qi; HU Yajing; SONG Weili; MU Qichao

doi:10.16031/j.cnki.issn.1003-8035.202112031

2023 Vol. 34, No. 1

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WANG Qi, HU Yajing, SONG Weili, MU Qichao. Stability analysis and hazard prediction of dangerous rock masses in karst mountainous area: A case study of Changchong dangerous rock mass in Songtao County, Guizhou Province[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34(1): 75-84. doi: 10.16031/j.cnki.issn.1003-8035.202112031

Citation:

WANG Qi, HU Yajing, SONG Weili, MU Qichao. Stability analysis and hazard prediction of dangerous rock masses in karst mountainous area: A case study of Changchong dangerous rock mass in Songtao County, Guizhou Province[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34(1): 75-84. doi: 10.16031/j.cnki.issn.1003-8035.202112031

Stability analysis and hazard prediction of dangerous rock masses in karst mountainous area: A case study of Changchong dangerous rock mass in Songtao County, Guizhou Province

1.
No.1 Institute of Geological & Mineral Resources Survey of Henan, Luoyang, Henan　471023, China
2.
Research Center for Applied Engineering Technology of Ecology and Exploration Geochemistry, Luoyang, Henan　471023, China
3.
Key Laboratory of Precions Metals Analysis and Exploration Technology, Ministry of Natural Resources of the People’s Republic of China, Luoyang, Henan　471023, China

Received Date: 28 December 2021

Revised Date: 20 April 2022

Accepted Date: 25 April 2022

Publish Date: 25 February 2023

Abstract

Abstract

In karst areas, the mountains are bare and the terrain is steep. Once the dangerous rock mass developed instability, it will threaten the lives and properties of the residents. So it is significant to analyze the stability and hazards of the disasters in a timely and accurate manner. Taking the dangerous rock mass of Changchong Group in Heping Community, Songtao County, Guizhou Province as the object, combined with the results of engineering survey, the disaster-generating background of the dangerous rock mass areas, such as topography, geological structure and hydrology, were analyzed, and the development characteristics of the dangerous rock mass were analyzed deeply. The failure mode and influencing factors of dangerous rock mass was demonstrated. On this basis, qualitative and quantitative analysis of the stability of the dangerous rock mass was carried out, and the hazard degree and development trend of the dangerous rock mass are evaluated. The results show that the unique karst landforms, karst features and complex structural planes of the dangerous rock mass developed in karst mountainous areas are the key factors controlling the stability, and rainfall and weathering are the main inducing factors. A preliminary prevention plan has been proposed to provide a reference for subsequent treatment measures.
- dangerous rock mass /
- stability analysis /
- motion trajectory characteristics /
- stereographic projection /
- rockfall

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References

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