Excavation Technology for the Working Holes of Shield Tunnel Faces in Pebbly Sandstone Stratums
The wear and tear of the cutterhead of the shield tunneling machine will lead to difficulties in shield tun-neling,which will seriously affect construction efficiency.The repair operation of the cutterhead needs to excavate a working hole at the shield tunnel face to provide standing and walking operation space for the manual repair of the cutterhead.This paper takes the shield project of the SJSG-1 section of the Shenzhen-Jiangmei Railway as an example,and puts forward a technology for excavating the working hole of the shield tunnel face,focusing on tech-nical points such as the process of operators entering the cabin,the excavation technology of the working hole of the face,precautions for the construction of chiseling the hole door away,so as to provide reference for the subse-quent construction of shield machines.
Shield machineCabin entry operationWorking hole of facesExcavation technology
万方数据
维普
