Author(s): QIN Bang-jiang, XIA Yi-min
Pages: 52-55
Year: 2016 Issue:  7
Journal: Hydraulics Pneumatics & Seals
Keyword:  slurry shield; slurry circulation system; pressure loss; calculation;
Abstract: In the slurry shield, the slurry circulation system is the system of conveying slurry which taking out the earth cut down by the slur-ry shield with the slurry flow. With slurry shield work forward, the tunnel will become longer, the pipe of the system also should be longer, then, the number of valves and bends will be increased. Correspondingly, the pressure loss of the system will be increased. The pressure loss of the system will influence the choose of the pump head. This paper has analyzed the influence of parameters of pipe diameter, flow rate, slurry density, valves, and bends having affection on the pressure loss. According to the formula, the pressure loss of the system has been cal-culated, As the calculations to determine the pump head of the system. When designing the slurry shield of Shenyang subway project, by us-ing the method in this paper, the pressure loss of the system has been computed which determining the pump head. The results obtained from the analysis essentially company with the experimental data of the project.