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- 저자 : Yiguo Xue (검색결과 2 건)
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Yiguo Xue,Chuanqi Qu,Maoxin Su,Daohong Qiu,Xin Li,Xinmin Ma 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.9
The Bohai Sea is the immense inland sea in China and the Bohai Strait is a sea graben from East China to Northeast China which lies between the Jiaodong Peninsula and the Liaodong Peninsula. Considering the forthcoming Bohai Strait subsea tunnel, the authors selected nine indicators including seabed topography, stratigraphic lithology, geological structure, earthquake, environmental impact, engineering scale, ventilation conditions, residents’ satisfaction, and landing position. These indicators are considered as evaluation indexes to evaluate three alternative routes of the Bohai Strait subsea tunnel: line A, line B, and line C. In this paper, the evaluation model of the Bohai Strait subsea tunnel based on analytic hierarchy process (AHP) and extension theory is established. In this regard, the grade of route selection is divided into four categories: excellent, good, average, and bad. Finally, through the model calculations, it is concluded that line B of the Bohai Strait subsea tunnel is the best, and line A is the worst. This method provides a new idea for the evaluation of subsea tunnel site selection and also represents some references for other types of engineering site selection.
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Yiguo Xue,Dan Wang,Shucai Li,Daohong Qiu,Zhiqiang Li,Jianye Zhu 대한토목학회 2017 KSCE JOURNAL OF CIVIL ENGINEERING Vol.21 No.7
Constructing a subsea tunnel is exceptionally difficult because of the complex geological conditions involved in the process. Water or mud inrush is a geological hazard that occurs suddenly during the construction of a cross-harbor tunnel, thereby causing major disasters and economic losses. The weak structural planes in a fault zone are the naturally preferred planes for water inrush. It is necessary to analyze the mechanism and to develop a risk prediction method for water or mud inrush from such faults. In order to effectively predict the risk of water or mud inrush during the construction of a subsea tunnel, this paper analyzes the mechanism of water or mud inrush from extensional faults, shear faults and compressive faults based on cusp catastrophe model. The potential function for the risk of water or mud inrush is built, and then the index of water inrush (IP) is obtained based on the equations of equilibrium for the fault surface. Water or mud inrush occurs only when . The proposed method of risk prediction is successfully used in Qingdao Kiaochow Bay subsea tunnel to prove its applicability and feasibility.
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