Development laws of geological hazards along urban highway in Southwest China and countermeasures for prevention and control

Abstract

China is a mountainous country with highly developed road geologic hazards, which pose a great threat to the construction and operation of highways, bridges, and tunnels and to the safety of people and property. This paper discussed the types, basic features, formation, and prevention conditions of road geologic hazards in China based on field research and study data collected thus far. The study considered an urban area of a city in southwest China as the center and a geological field investigation was performed over a total of 282 km on three important lifeline projects. The results show: Types of geologic hazards along the highways are mainly avalanches, debris flows, and landslides, respectively. Among them, the landslips are mainly distributed along the roads, with slip, dumping, and wrong break types as the main ones; the debris flows are widely distributed, mainly concentrated in the river valleys; and the unstable slopes are relatively few in number. Geological disasters are characterized by large-scale and concentrated triggering in time and space, and a single disaster can easily trigger other disasters, thus forming a chain of disasters. Neotectonic movement, seismic activity, topography, climatic conditions, stratigraphic lithology, and human activities are important factors leading to geologic hazards in the study area. This study is of great practical significance for reducing the occurrence of roadbed diseases and prolonging the service life of highways.

Keywords

Urban highway / Geologic hazards / Development pattern / Prevention

References

[[1]] Y.G. Ou, Development characteristics and prevention countermeasures of geological disasters in Wuchuan county[J], Nonferrous Met. Des. 48 (2) (2021) 90-92, 110.

[[2]] P.Y. Chen, Liu, Yao, Gao Zhang, et al., Development laws of geological hazards along highways in southwest China and countermeasures for prevention and control[J], Western Resourc. (12) (2020) 65.

[[3]] H. Cheng, Analysis on the development characteristics and prevention countermeasures of geological disasters in Shouyang County[J], Huabei Nat. Resourc. (01) (2020) 129-130.

[[4]] K.X. Ren, Discussion on the development characteristics and prevention countermeasures of geological disasters in Zezhou County[J], Huabei Natural Resources (3) (2021) 110-111.

[[5]] Y.B. Yun, Analyze the development characteristics of geological hazards and preventive measures[J], World Nonferr. Met. (23) (2019).

[[6]] W.T. Yang, D. Su, Geological hazards development characteristics and their prevention and control measures of long distance pipeline engineering in Qinba mountainous terrain[J], Natural Gas and Oil 38 (4) (2020) 130-134.

[[7]] B. Li, Development characteristics and prevention measures of slope geological hazards in construction projects around mining areas in Anhui Province, China Metal. Bull. (23) (2020) 90-91.

[[8]] K. Yin, K. Study on prevention and control of mine geological disaster and protection of geological environment[J], World Nonferr. Met. (21) (2019) 146-147.

[[9]] Q. Cheng, C.X. Hu, X.B. Yang, Developmental regularity and preventive countermeasures of geological hazards along the highway in Jiuzhaigou earthquake area[J], Chin. J. Geol. Hazard Control, 29 (4) (2018) 114-120.

[[10]] Y.B. Zhou, Study on the development law and prevention countermeasures of geological hazards on side (slippery) slope along the national and provincial trunk highway in southwest mountainous area of Hubei Province[D], University of Chinese Academy of Sciences, 2016.

[[11]] Q. Cheng, R.P. Wang, H.S. Ma, Development law and prevention countermeasures of “5.12” earthquake geological disaster in Wenchuan along the Sichuan-Ganjie-Guangyuan Highway, Academic Seminar of National Highway, Engineering Geological Science and Technology Information Network, National Highway Engineering Geology Science and Technology Information Network (2009).

[[12]] Shunde Jiang, Shasha Long, Qiliang Chen, et al., Research on the developing laws and countermeasures Of the geological hazards in Wuding County Yunnan Province[J], Yunnan Geograph. Environ. Res.. 19 (3) (2007) 5.

[[13]] Chenhui Huang, Yong Lyu, Yi Sheng, Distribution of the geological hazards and the preventive measures in the Karst Areas southeast Yunnan China—a case study of Wenshan County[J], J. Geol. Haz. Environ. Preserv. 19 (3) (2008), 4.

[[14]] J.Z. Li, F. Tao, Y.R. Wang, et al., Study on Development Law and Countermeasures of Geological Disaster[J], Resourc. Environ. Eng. 29 (3) (2015) 312-314.

[[15]] Y.X. Liu, W.H. Zhan, Types Of geologic disaster, developmental regularity and preventive countermeasures[J], J, Tropic. Oceanogr. (1) (1992) 46-53.

[[16]] J. Li, X.H. Liu, C. Zhang, et al., Development law and countermeasures of geological hazards in Zhangjiajie grand canyon scenic area[J], Journal of Hunan University of Arts and Science (Science and Technology) 31 (3) (, 2019) 91-95.

[[17]] Y.G. Zhao, Geological disasters and controlling conutermeasures along the highway from Sichuan to Xizang[J], Journal of Natural Disasters, 2 (1) (1993) 72-78.

[[18]] J.P. Zhu, L.C. Chen, Study on a highway slope geological disaster of Nanchong city and its characteristics and project management measures, in:Proceedings of the 2018 National Academic Conference on Industrial Architecture 1, 2018.

[[19]] L.X. Cheng, Study on collapse formation mechanism and risk assessment of the slope near the highway from Yingxiu to Wolong after “5.12”Wenchuan earthquake[D], Chang an University, 2014.

[[20]] F.P. Ling, J.H. Shi, S.W. Ma, Analysis of geological hazards distribution and prevention in Pujiang county,prevention and control of local disasters, disaster relief and housing, Zhejiang Geological Society Academic Annual (2017).