淤泥地层内顶管顶进对上覆土体及管线的影响

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在淤泥层中,顶管顶进施工过程对上覆土体和邻近管线的影响较大,合理调节相关施工参数对控制土体扰动具有重要意义.本文以深圳固戍污水净化厂二期工程配水管项目为例,通过有限元分析软件ABAQUS分析顶管顶进施工过程中不同的注浆压力、支护力和顶进层土体性质对上覆土体及邻近管线的影响规律.结果 表明:调节注浆压力和改善土体性质对土体扰动的控制效果较好,而在淤泥层中调整支护力对土体扰动的控制效果有限.
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