工程地质学报2017，Vol.25Issue(2)：300-307,8.DOI:10.13544/j.cnki.jeg.2017.02.005
面向地表沉降控制的地铁盾构参数研究
DECIDING OF SHIELD PARAMETERS FROM CONTROLLING GROUND SETTLEMENTS
摘要
Abstract
The settlement of the ground surface is one of the most concerned engineering problems in subway shield tunneling,because the settlement is in relation to the usual operation of adjacent structures and the normal proceeding of shield construction.Therefore,this paper takes the ground surface settlement as the key objective to decide the shield parameters.The parameters affecting the surface settlement are simplified into two indices,namely support pressure ratio on the tunnel face to the earth pressure and the elastic modulus of generation layer.Taking the section from Nanmenkou to Houjiatang along Line 1 of Changsha Metro as an example,this paper carries out FLAC3D numerical simulation to analyze the effects of the two indices on surface subsidence.The suggestion of the shield parameter values for the selected section of Changsha subway is then put forward.Besides,the subsiding area and the maximum of the subsidence are also proposed.This research brings out a reference for the subsequent construction of Changsha metro and provides a method for parameter deciding of shield tunneling in other cities.关键词
地铁盾构/地表沉降/盾构参数Key words
Shield tunneling/Ground settlement/Shield parameters分类
交通工程引用本文复制引用
赵晓彦,张肖兵,范智浩,张志学,张士强,崔向寒..面向地表沉降控制的地铁盾构参数研究[J].工程地质学报,2017,25(2):300-307,8.基金项目
国家自然科学基金(41541022)资助. （41541022）
