论文部分内容阅读
DN2400污水管作为污水主管道,常规新老管割接采用干作业,即割接和封堵老管时必须做临排,将老管退出运营,在没有水的环境下进行割接切换施工。如果没有条件进行临排,无法将老管退出运营的情况下,必须带水进行割接和封堵,同时要求相关泵站配合停水或者排空放江将污水流速降到潜水员可以工作的流速。本文主要介绍虹梅南路合流污水改排工程DN2400污水主管道两个点的带水割接施工技术。
DN2400 sewage pipe as the main sewage pipe, conventional new and old pipe cut dry use of work, cutting and sealing of the old pipe must be done when the Provisional, the old pipe out of operation, in the absence of water cut cutover switch construction. If there is no condition for temporary arrangement and the old pipe can not be withdrawn from operation, it must be cut and plugged with water. At the same time, the relevant pumping station should be required to stop water or empty the river to reduce the flow rate of the sewage to the speed at which the diver can work . This article introduces Hongmei South Road confluence sewage rerouting project DN2400 sewage main pipe two points with water cutover construction technology.