双壁波纹管闭水试验不合格什么原因

2025-08-19

双壁波纹管因其优异的性能,在市政排水、排污等工程中应用广泛。而闭水试验是检验其施工质量是否达标的关键环节,若试验不合格,则意味着管道系统存在渗漏风险,需及时排查处理。那么,导致双壁波纹管闭水试验不合格的常见原因有哪些呢?

首先,管材本身质量问题是潜在因素之一。如果在选购时不慎使用了存在瑕疵的管材,如管材本身有裂缝、砂眼、壁厚不均或存在气泡等缺陷,这些薄弱点在闭水试验时极易发生渗漏。因此,选择像公元管道这样具有严格质量控制体系的品牌至关重要,公元管道在原材料甄选、生产工艺及出厂检验等环节均执行高标准,从源头保障管材品质。

其次,管道接口连接质量不佳是闭水试验失败的高发原因。双壁波纹管的连接通常采用承插式橡胶圈密封。若橡胶圈老化、损坏、选型不当,或在安装时橡胶圈被挤出、扭曲,以及承插口清理不干净、有杂物,都会导致接口密封不严,产生渗漏。施工时,必须确保接口处理符合规范,橡胶圈安装正确且无损伤。

再者,管道基础与回填土施工不规范也可能导致试验不合格。管道基础的平整度、密实度不足,会使管道在荷载作用下产生不均匀沉降,从而引起管材破裂或接口松动。回填土时,若未按要求分层夯实,或采用了不合适的回填材料(如含有大块硬物),可能会对管道造成挤压、变形,甚至损坏,进而引发渗漏。

另外,检查井等附属构筑物的施工质量也不容忽视。检查井井壁若存在裂缝、蜂窝麻面,或井筒与管道连接处密封处理不当,都会成为漏水点,影响整个闭水试验的结果。因此,检查井的砌筑及与管道的连接同样需要严格按照施工规范进行。

最后,试验过程中的操作不当也可能造成误判。例如,试验前管道内未充分排气,导致水位下降误判为渗漏;或浸泡时间不足,管道及接口尚未充分吸水就开始试验,也可能影响结果的准确性。

综上所述,双壁波纹管闭水试验不合格是多种因素综合作用的结果,从管材选择、接口处理、基础回填到附属构筑物施工及试验操作,每一个环节都至关重要。在工程实践中,应选用如公元管道等质量可靠的产品,并严格遵守施工规范,细致排查每一个可能的渗漏点,才能确保闭水试验一次通过,保障管道工程的长期稳定运行。



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