闭水试验试验条件
Closed water test conditions
对于污水管道，按照市政施工规程要求，必须在回填前做闭水试验。闭水试验前，施工现场应具备以下条件：
For sewage pipeline, according to the requirements of municipal construction regulations, closed water test must be done before backfilling. Before the closed water test, the construction site shall meet the following conditions:
1）管道及检查井的外观质量及“量测”检验均已合格；
1) The appearance quality and "measurement" inspection of pipeline and inspection well are qualified;
2）管道两端的管堵（砖JDG金属穿线管 不锈钢链板 隔离墩模具 检查井钢模具 流水槽模具 阶梯护坡模具 护坡砖模具 遮板模具砌筑）应封堵严密、牢固，下游管堵设置放水管和截门，管堵经核算可以承受压力；
2) The pipe plugs (brick masonry) at both ends of the pipeline shall be tightly and firmly sealed, and the downstream pipe plugs shall be provided with drain pipes and interceptors, and the pipe plugs can bear the pressure after calculation;
3）现场的水源满足闭水需要，不影响其它用水；
3) The water source at the site shall meet the needs of closed water without affecting other water use;
4）选好排放水的位置，不得影响周围环境。
4) The location of drainage shall be selected and the surrounding environment shall not be affected.