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Safety risk assessment of weak tunnel construction with rich groundwater using an improved weighting cloud model
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Safety risk assessment of weak tunnel construction with rich groundwater using an improved weighting cloud model
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Journal Article
Safety risk assessment of weak tunnel construction with rich groundwater using an improved weighting cloud model
2025
Overview
Many tunnels in Western China are excavated through soft and water-rich rocks. Tunnel excavation in such regions is highly susceptible to disasters such as collapses and water and mud inrush. To control the risks associated with tunneling, this paper proposes a risk evaluation model applicable to soft and water-rich tunnels. First, geological data corresponding to typical soft and water-rich tunnels and related cases were analyzed. By analyzing the natural geology, tunnel characteristics, and construction management, ten influencing factors were selected as the risk evaluation indicators, and a risk evaluation hierarchy was established. Second, the improved combination weight method was applied to obtain the optimal weights of each indicator. A cloud model was then used to visualize the final risk level and establish an evaluation system for soft and water-rich surrounding rocks. Finally, the developed evaluation model was practically applied to a railway tunnel in Western China. The results were highly consistent with the actual situation and could play a guiding role in the construction process. This confirmed the reliability and applicability of the proposed model, which can also be used as a reference for other similar tunnels.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
