Study and application of mathematical model for engineering geological hazard risk assessment of mountain tunnel mouth
GUO Xiaohong1, YAO Zaifeng1, MA Wenzhu2, HE Xiaonan2
1. Technical Center, China State Construction Engineering Corporation, Beijing 101300, China; 2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100089, China
Abstract By collecting the data of collapses and landslide disasters at the mountain tunnel mouth, ten factors were summarized to two major aspects of collapses at tunnel mouth and instability in heading slope in this paper. Classification of disaster factors were suggested, math model of the membership degree of disaster factors which could achieve qualitative to quantitative mathematical was established, mathematical principles on disaster factors in fuzzily integrated analysis method was explained, thus, the mathematical model for engineering geological hazard risk assessment of mountain tunnel mouth was established. Ttaking the engineering practice of the mouth section of Zishi Tunnel and Ganggou tunnel as two cases, the application method of the model was described in detail, and the engineering geological risk of the project was evaluated, which provided theoretical tools and methods for tunnel workers to strengthen the safety control of the construction at the mountain tunnel mouth.
GUO Xiaohong,YAO Zaifeng,MA Wenzhu, et al. Study and application of mathematical model for engineering geological hazard risk assessment of mountain tunnel mouth[J]. Hazard Control in Tunnelling and Underground Engineering,
2019, 1(4): 75-84.
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