Although there were subway protection requirements,soil sometimes was piled up on the surface above subway tunnel consciously or unconsciously because of construction activities around the subway tunnel, which will affect the operation of subway. This article,based on a real case,analyzed subway's operational risk of soil surcharge on the surface above the tunnel and after the soil dumping from the perspective of structural safety of the tunnel and track bed deformation cavity,etc.,assessed the risk by theoretical arithmetic and field monitoring,and came up with relative treatment. The aim of this article was to provide reference for the similar cases in the future.%由于地铁运营隧道周边相关工程建设活动的存在,虽然有地铁保护要求,有时仍会出现在隧道上方地表有意识或无意识堆土的情况,从而对地铁运营产生影响.以实际案例为背景,从隧道结构安全、道床变形脱空等角度分析隧道上方地表堆土、卸土后地铁的运营风险,通过理论计算和现场监测的方式评估风险,并给出相应的处理措施.希望对以后类似案例的处理提供一定的参考.
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