Analysis of the Effect of Rock Block Inclinations on the Stability of Soil-Rock Slopes

LIU Shunqing; WEN Chuan; SUN Yuhe; ZHANG Zhichao

doi:10.3724/j.gyjzG23091814

Volume 55 Issue 12

Dec. 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(12): 224-230

LIU Shunqing, WEN Chuan, SUN Yuhe, ZHANG Zhichao. Analysis of the Effect of Rock Block Inclinations on the Stability of Soil-Rock Slopes[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(12): 224-230. doi: 10.3724/j.gyjzG23091814

Citation:

LIU Shunqing, WEN Chuan, SUN Yuhe, ZHANG Zhichao. Analysis of the Effect of Rock Block Inclinations on the Stability of Soil-Rock Slopes[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(12): 224-230. doi: 10.3724/j.gyjzG23091814

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Analysis of the Effect of Rock Block Inclinations on the Stability of Soil-Rock Slopes

doi: 10.3724/j.gyjzG23091814

LIU Shunqing^1,2,3,4,
WEN Chuan^{1
,
,},
SUN Yuhe¹,
ZHANG Zhichao^2,3

1. School of Civil Engineering and Architecture，Jiangsu University of Science and Technology，Zhenjiang 212100，China;
2. Key Laboratory of Geohazard Prevention of Hilly Mountains，Ministry of Natural Resources，Fuzhou 350002，China;
3. Fujian Key Laboratory of Geohazard Prevention，Fuzhou 350002，China;
4. Jiangsu Province Engineering Research Center of Geoenvironmental Disaster Prevention and Remediation，Zhenjiang 212100，China

Received Date: 2023-09-18
Available Online: 2026-01-06
Publish Date: 2025-12-20

Abstract

Abstract

In order to study the influence of the inclination of rock blocks on the stability of the soil-rock slope， by constructing quadrilateral rock blocks of different shapes， numerical models of the soil-rock slope were established by the widely existing rock blocks with edge characteristics in nature. In the paper， the method of finite element limit analysis was used to calculate the safety factors of slopes under different inclination angles of rock blocks， and the results were statistically analyzed. The results showed that the stability of the soil-rock slope was significantly affected by the inclination of rock blocks， and the average safety factor of the slope increased first and then decreased with the increase of the inclination of rock blocks when it changeds from 0° to 120°， and once more increased first and then decreased after reaching 120°. Due to the random distribution of rock blocks in the soil-rock slope， the safety factors would fluctuate according to its influence， and there were significant differences in the fluctuation degree under different volumetric rock block proportions. By analyzing the shear dissipation diagrams of the soil-rock slopes， when the inclination of rock blocks was 60°， the development of the sliding shear zone was obstructed by the direction of the edge or the long axis of the rock block， and the stability of slope was high in this case； when the inclination of rock blocks was 0°，150° or 180°， the sliding shear zone was easy to form a through development along the contact direction of the edge of the rock block and the stability of the slope was low， at this time， the inclination angle of rock blocks was related to the volumetric rock block proportions.
- soil-rock slope,
- stability,
- rock block inclination,
- volumetric rock block proportion,
- limit analysis

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References(19)

References

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