闭气试验在埋地塑料排水管道严密性验收中的应用

Application of the Closed Air Test in Leakproofness Acceptance of Buried Plastic Pipeline for Sewer Engineering

摘要: 采用闭气试验对实际工程中的埋地塑料排水管道严密性进行了研究。首先，根据地下水位与管道内底标高的关系确定管道覆土后闭气试验的测试气压；其次，依据规范确定闭气试验判定标准、技术流程、注意事项。最后，通过闭气试验实际工程应用表明，闭气试验可以应用于埋地塑料排水管道严密性验收，且能依据现行规范进行判定是否符合要求。闭气试验相比闭水试验具有优势，可取代闭水试验。

Abstract: The leakproofness of buried plastic pipes for sewer engineering in actual projects is studied by closed air test. Firstly, according to the elevation relationship between the groundwater and the inner bottom of the pipeline, the test air pressure of the closed air test is determined after the pipeline is buried with soil. Secondly, the judgment standard, technical process and precautions of the closed air test are determined according to the specifications. Finally, the practical engineering application of the closed air test shows that it can be not only applied to the leakproofness acceptance of buried plastic pipes for sewer engineering, but also determine whether it meets the requirements according to the current specifications. The closed air test has advantages over the closed water test and can replace the closed water test.