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针对地下建筑物遭受雷击损害的风险难以确定的问题,分析了地下建筑物遭受雷击的原理,给出了雷电损害地下设施及线路的途径以及地下建筑物及交通设施遭受雷电损害的来源。给出了一组可以作为地下建筑物雷电灾害风险评估的风险因子。指出埋地电缆的接地点数量,电缆的埋深,光缆的接地方式可以作为评估其雷击风险的因子。
In view of the difficulty of determining the risk of underground buildings being struck by lightning, the principle of lightning strikes on underground buildings is analyzed. The ways of lightning damage to underground facilities and lines and the sources of lightning damage to underground buildings and transportation facilities are given. A set of risk factors that can be used as a risk assessment for lightning disasters in underground buildings is given. Pointed out that the number of buried cable grounding point, cable depth, cable grounding can be used as a way to assess the risk of lightning.