超大直径长距离顶管施工技术在工程实践中日渐得到应用和推广。随着顶管顶距的加长、管径的增大,管道在浅覆土软弱地层等不良状态下的隆起失稳问题时有发生。结合上海市某污水顶管工程的管道局部失稳案例,分析了顶管在浅覆土状态下管顶土体的应力状态及管道失稳的原因,并提出了相应的防治措施,为今后类似工程提供借鉴。 Large diameter long-distance pipe jacking construction technology in engineering practice has been gradually applied and promotion. With the prolongation of the top pipe jacking, the increase of the pipe diameter and the instability of the pipe under the unfavorable conditions such as shallow overburden and weak strata, etc., sometimes occur. Based on the case of local pipe instability of a sewage pipe jacking project in Shanghai, the stress state of pipe jacking and pipe instability of pipe jacking in shallow caving soil are analyzed. Corresponding control measures are put forward, Provide reference.