Qilu Evening Newspaper - Qilu one point author: Zhao Xia ye
shield machine, the shield construction is faced with serious damage, low push efficiency and opening switching frequency under normal pressure in high strength hard rock stratum With the big rate and difficult control of the shield attitude, the whole interval shield construction has been opened 451 times at normal pressure and 45 times at normal pressure, and the average of every 16 ring should be replaced once, which greatly affects the construction progress.
under the correct leadership of the group company, the third pipe centers hold several expert meetings and production scheduling meetings, constantly study and adjust the parameters of the shield tunneling, adjust the modified ratio of the residual soil, and find out the rational construction on the basis of the wear law of the hob in the hard rock formation, so as to ensure the driving efficiency of the shield machine. At the same time, in the process of construction, 24 hours uninterrupted monitoring, through real-time measurement of ground settlement, information monitoring and other measures to effectively control the driving parameters, reasonable construction of the site construction organization. It lasted for 164 days, and the 798 rings were drifting and assembled. They were worn through ten roads, the Austrian West Road and the surrounding important pipelines.