Next Article in Journal
Application of Multi-Source Data Fusion Method in Updating Topography and Estimating Sedimentation of the Reservoir
Previous Article in Journal
Exploring the Dominant Runoff Processes in Two Typical Basins of the Yellow River, China
Article

Deformation and Stability Characteristics of Layered Rock Slope Affected by Rainfall Based on Anisotropy of Strength and Hydraulic Conductivity

by 1,2,3, 1,2,3, 1,2,3,*, 4, 1,2,3, 1,2,3 and 1,2,3
1
School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
2
Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education, School of Geoscience and Info-physics, Central South University, Changsha 410083, China
3
Hunan Key Laboratory of Nonferrous Resources and Geological Hazards Exploration, Changsha 410083, China
4
Yunnan Diqing Nonferrous Metals Co., Ltd., Diqing 474400, China
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3056; https://doi.org/10.3390/w12113056
Received: 9 October 2020 / Revised: 25 October 2020 / Accepted: 27 October 2020 / Published: 30 October 2020
(This article belongs to the Section Hydrology and Hydrogeology)
The strength and hydraulic conductivity anisotropy of rock slopes have a great impact on the slope stability. This study took a layered rock slope in Pulang, Southwestern China as a case study. The strength conversion equations of the seriously weathered rock mass were proposed. Then, considering the anisotropy ratio and anisotropy angle (dip angle of bedding plane) of strength and hydraulic conductivity, the deformation and stability characteristics of rock slope were calculated and compared with field monitoring data. The results showed that the sensitivity analysis of strength and hydraulic conductivity anisotropy could successfully predict the occurrence time, horizontal displacement (HD), and the scope of the rock landslide. When the anisotropy ratio was 0.01 and the dip angle was 30°, the calculated HD and scope of the landslide were consistent with the field monitoring data, which verified the feasibility of the strength conversion equations. The maximum horizontal displacement (MHD) reached the maximum value at the dip angle of 30°, and the MHD reached the minimum value at the dip angle of 60°. When the dip angle was 30°, the overall factor of safety (FS) and the minimum factor of safety (MFS) of the rock slope were the smallest. By assuming that the layered rock slope was homogeneous, the HD and MHD would be underestimated and FS and MFS would be overestimated. The obtained results are likely to provide a theoretical basis for the prediction and monitoring of layered rock landslides. View Full-Text
Keywords: layered rock slope; landslides; hydraulic conductivity; anisotropy ratio; dip angle; deformation layered rock slope; landslides; hydraulic conductivity; anisotropy ratio; dip angle; deformation
Show Figures

Figure 1

MDPI and ACS Style

Xia, C.; Lu, G.; Zhu, Z.; Wu, L.; Zhang, L.; Luo, S.; Dong, J. Deformation and Stability Characteristics of Layered Rock Slope Affected by Rainfall Based on Anisotropy of Strength and Hydraulic Conductivity. Water 2020, 12, 3056. https://doi.org/10.3390/w12113056

AMA Style

Xia C, Lu G, Zhu Z, Wu L, Zhang L, Luo S, Dong J. Deformation and Stability Characteristics of Layered Rock Slope Affected by Rainfall Based on Anisotropy of Strength and Hydraulic Conductivity. Water. 2020; 12(11):3056. https://doi.org/10.3390/w12113056

Chicago/Turabian Style

Xia, Chengzhi; Lu, Guangyin; Zhu, Ziqiang; Wu, Lianrong; Zhang, Liang; Luo, Shuai; Dong, Jie. 2020. "Deformation and Stability Characteristics of Layered Rock Slope Affected by Rainfall Based on Anisotropy of Strength and Hydraulic Conductivity" Water 12, no. 11: 3056. https://doi.org/10.3390/w12113056

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop