Construction Risk Evaluation and Prevention Countermeasures for a Deep Excavation Slope in Chongqing Wuling Mountain Area

Hao Yu; Yuanyuan Deng; Yan Ma; Zhiyan Tang

doi:10.54097/0g7nxy23

Authors

Hao Yu
Yuanyuan Deng
Yan Ma
Zhiyan Tang

DOI:

https://doi.org/10.54097/0g7nxy23

Keywords:

Chongqing Wuling Mountain Area, Deep Excavation Slope, Risk Evaluation, Prevention and Control Measures

Abstract

Chongqing Wuling Mountain area has steep mountains and dense forests, and complex geological conditions, which bring more difficulties to the construction of highways along the route, especially the excavation of deep excavation slopes, which faces many risks and challenges. This paper evaluates the construction safety risk of deep excavated rocky slope on the right side of a highway K4+530-K4+916 in Chongqing as an example. On the basis of fully investigating the construction risk impact indexes, the risk evaluation indexes are ranked in order of importance, the index system method is used to determine the weight of each index, and the quantitative value of each index is taken according to the investigation and design data and the on-site field survey. Using the risk evaluation theory, the risk level of the slope is rank Ⅱ (medium risk), combined with the evaluation results, the proposed risk prevention and control of prevention and control countermeasures, which can provide a certain reference for the evaluation of the risk level and the development of prevention and control countermeasures for similar projects.

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References

[1] ZHANG Runzhi, ZHONG Guoqiang, WANG Chao, et al. Overall risk assessment of highway marl high slope excavation construction [J]. Value Engineering, 2023, 42 (25): 39-41.

[2] LIU Ruiqi. Safety risk assessment of highway slope based on FAHP and its engineering application[D]. Huazhong University of Science and Technology, 2021.

[3] Xia Yifeng, Yin Guohua, Lin Rui, et al. Slope geological hazard risk assessment method and engineering application based on fuzzy comprehensive evaluation [J]. Science & Industry, 2022, 22 (10): 378-382.

[4] ZOU Zongmin. Application of analytic hierarchy process in construction risk assessment of highway slope [J]. Journal of Highway and Transportation Research and Development (Applied Technology Edition), 2018, 14 (10): 5-8.

[5] Du Y, Sheng Q, Fu X, et al.Risk evaluation of colluvial cutting slope based on fuzzy analytic hierarchy process and multilevel fuzzy comprehensive evaluation. [J]. Journal of Intelligent and Fuzzy Systems, 2019, 37(3):4245-4271.

[6] TIAN Qingyan, ZHANG Qingqing, YIN Quanchun, et al. Research on Risk Assessment Model of Operational Highway Slope Based on Unstable Index Method[J]. Zhongwai Highway,2022,42(5):30-37.

[7] Wang Helin, Xie Wangxiang, Hu Qingguo. Determination of the risk level of the impact of high slope construction on operation safety of reconstruction and expansion expressway[J].Zhongwai Highway, 2014, 34(6):4.

[8] LIU Huaixiang, ZENG Sheng, ZHU Gang. Optimal Selection of Slope Treatment Scheme Based on Analytic Hierarchy Process[J]. Zhongwai Highway,2007,27(5):27-31.

[9] YE Xian, CHEN Huabin, WU Zhu, et al. Discussion on the overall risk assessment technology of construction safety of high cutting slope engineering of highway in mountainous areas[J]. Highway, 2018, 63 (3):42-47.