岩土工程学报2011，Vol.33Issue(1)：117-122,6.
干砂盾构开挖面稳定性模型试验研究
Large-scale tests on face stability of shield tunnelling in dry cohesionless soil
摘要
Abstract
The shield technology has been widely used in underground construction.The face stability is the key problem in the shield tunneling.Large-scale model tests on the face stability of tunnels with the ratios of tunnel depth to diameter C/D = 0.5.1.0 and 2.0 are conducted in the dry sand.The influence of C/D on the ultimate support pressure and the settlement of ground surface are obtained.The support pressure decreases sharply with the increase of the face displacement.However, the settlement of the ground surface is not sensitive to the support pressure before the residual support pressure.Both the support pressure and the ground settlement are essential to the monitoring of the face stability in the shield tunnelling.关键词
模型试验/盾构/开挖面稳定性/极限支护力/土拱效应Key words
model test/ shield tunnelling/ face stability/ ultimate support pressure/ soil arching分类
建筑与水利引用本文复制引用
陈仁朋,李君,陈云敏,孔令刚..干砂盾构开挖面稳定性模型试验研究[J].岩土工程学报,2011,33(1):117-122,6.基金项目
国家自然科学基金项目(50629802) （50629802）
国家重点基础研究发展计划(2007CB714001) （2007CB714001）
教育部新世纪优秀人才支持计划资助项目(NCET-08-0491). （NCET-08-0491）
