In the construction of cement pipes, there will be different construction keys according to changes in different environmental addresses. Just like the installation of the cement pipe in the room and the underground cement pipe, because of different issues to be considered, the key to pay attention to is different, and the construction methods are different. The following are the key points for the construction of tunnel concrete pipes summarized by the editor of Wanxin.
Specifically, it can be divided into the following steps:
(1) The water is introduced into the central cement pipe through a lateral diversion pipe. The central cement pipe installation is performed before the filling of the Yanggong. When installing the device, a layer of mortar is applied at the center of the Yanggong as the root of the pipe joint. The overlap length is 20cm.
(2) A horizontal water diversion pipe is provided every 10 meters, so pay attention to reserve the connection hole between the horizontal water diversion pipe and the central cement pipe when the central cement pipe pipe section is prefabricated. Cement pipes are assembled and prefabricated in the prefabrication field, and prefabricated according to a section of 2 meters. The prefabricated formwork uses a fixed formwork.
(3) Pay attention to the fact that there is no obstruction during the construction of the cement pipe to ensure that the drainage of the blind ditch is cleared.
Cement pipeline engineering is a hidden project. As far as the above problems are concerned, only by strengthening the control of various links in the construction process can we avoid various problems and ensure that the overall construction of the project is excellent.