Analysis of Shield Construction in Spherical Weathered Granite Development Area

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Cao, Quan^1 ; Li, Peigang^1 ; Gong, Shuhua^1

School of Railway Transportation, Shanghai Institute of Technology, Shanghai

201418, China^1

关键词: Geological environment;    Parameter control;    Shield construction;    Shield machine;    Shield tunneling;    Southern China;    Urban rail transit;    Weathered granites;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/3/032066/pdf
DOI  :  10.1088/1755-1315/108/3/032066

来源: IOP

【 摘 要 】

The distribution of spherical weathered bodies (commonly known as boulder) in the granite development area directly affects the shield construction of urban rail transit engineering. This paper is based on the case of shield construction of granite globular development area in Southern China area, the parameter control in shield machine selection and shield advancing during the shield tunneling in this special geological environment is analyzed. And it is suggested that shield machine should be selected for shield construction of granite spherical weathered zone. Driving speed, cutter torque, shield machine thrust, the amount of penetration and the speed of the cutter head of shield machine should be controlled when driving the boulder formation, in order to achieve smooth excavation and reduce the disturbance to the formation.