Influence of Residual Settlement in Goafs on Stability of Deeply Excavated Slopes

FAN Yongfeng; LUO Jin; XU Yan; GUO Qingbiao; WAN Zhansheng

doi:10.3724/j.gyjzG22090705

Volume 54 Issue 4

Apr. 2024

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FAN Yongfeng, LUO Jin, XU Yan, GUO Qingbiao, WAN Zhansheng. Influence of Residual Settlement in Goafs on Stability of Deeply Excavated Slopes[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(4): 166-172. doi: 10.3724/j.gyjzG22090705

Citation:

FAN Yongfeng, LUO Jin, XU Yan, GUO Qingbiao, WAN Zhansheng. Influence of Residual Settlement in Goafs on Stability of Deeply Excavated Slopes[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(4): 166-172. doi: 10.3724/j.gyjzG22090705

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Influence of Residual Settlement in Goafs on Stability of Deeply Excavated Slopes

doi: 10.3724/j.gyjzG22090705

1. Henan Xinrong Expressway Construction Co., Ltd., Luoyang 471000, China;
2. School of Spatial Informatics and Geomatics Engineering, Anhui University of Sciences and Technology, Huainan 232001, China;
3. School of Earth and Environment, Anhui University of Sciences and Technology, Huainan 232001, China;
4. Henan Provincial Communications Planning & Design Institute Co., Ltd., Zhengzhou 450000, China

Received Date: 2022-09-07
Available Online: 2024-05-29

Abstract

Abstract

The residual settlement in goafs has a great influence on the stability of expressways. To analyze the influence of residual settlement in goafs under expressways on the stability of high and steep slopes, several test schemes were designed and stabillty analysis of high and steep slopes was performed. By the optimization study for the stability of deeply excavated slopes, it was concluded that the slope angle was the main factor affecting the stability of slopes, followed by the slope height, the internal friction angle and cohesion of rock masses, and the gravity densities of rock masses. The relational formulas between cohesion and slope safety factors, internal friction angle and slope safety factors were obtained, and the safety factor formula of slopes in simultaneous reduction of cohesion and internal friction angle was also obtained. The result showed that the residual settlement in goafs seriously affected the stability of deeply excavated slopes. The equivalent simulations of residual settlement could provide reference to influence evaluation of residual settlement on stability of deeply excavated slopes in goafs.
- slope stability,
- strength reduction,
- parameter sensitivity,
- residual settlement,
- equivalent simulation

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References(16)

References

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