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继天津市自来水公司使用氰凝法抢修φ200毫米以下的给水管后,我公司采用异型对合套袖法等,对φ200毫米以上的混凝土给水管的带水带压抢修工作取得了一些经验,现介绍于下:一、带压抢修承口处的漏水(一)异型对合套柚的构造:异型对合套袖可以用于给水管的胶圈漏水、刚性接口漏水、承口部分裂缝漏水(图1)等带水带压抢修施工。我们所使用的有铸铁定型的,钢板焊制的,及特制的几种。其基本构造是按混凝土管及承口处的外径尺寸制成两个半圆形的对
Following Tianjin Water Supply Company’s use of the cyanide coagulation method to repair water supply pipes below φ200 mm, our company adopted profiled halved sleeve cuffs and other methods to obtain some experience in repairing water pressure on concrete water supply pipes of φ200 mm or more. Introduced in the following: First, leak repair at the pressure relief repair socket (a) the structure of special-shaped pairs of pomelo: heterotypic sleeve sleeve can be used to leak water from the apron of the water supply pipe, leakage of the rigid interface, leakage of water in the socket mouth ( Figure 1) With water pressure repair construction. We have used cast iron stereotypes, welded steel plates, and special types. Its basic structure is to make two semi-circular pairs according to the outer diameter size of the concrete pipe and the socket