对大口径混凝土管顶管验收标准的建议

Recommendation on Acceptance Standard of Conduit Jacking for Large-Size Concrete Pipe

根据顶管施工的特殊性 ,对顶管渗漏以及渗漏对工程的危害进行分析 ,提出了在地下水位较高的软土地区 ,埋深较大的大口径管道顶管施工验收时不宜采用闭水试验 ,建议在管道内检查渗漏点的个数和测量单个漏水部位的漏水量作为检验方法 ,并提出了相应的标准。

On the basis of investigation on the feature of conduit jacking process for pipeline construction and the hazard analysis on the leakage of pipeline, the authors believe that in the check and accept of conduit jacking engineering, closed water test is not convenient for deep buried big size concrete pipeline in soft soil area with higher water table. The outhors think that the count of leakage points and the measurement of the leakage flux inside the pipe might be a way to examine the construction quality, and responsible standard has been suggested in this paper.