摘要
基于内昆铁路部分三线大跨隧道的复杂地质条件,采用理论分析、数值模拟和现场实测等方法,对不同开挖方法及支护方式下围岩变形特点和结构稳定性进行了分析,从而确定了合理的施工方法和辅助工法。通过对不同方案的比较,确定了合理的初期支护方式和参数。在对岩堆体稳定性特点分析的基础上,制定了相应的施工工艺、防坍塌及加固抗滑措施,在工程中应用后取得了满意的效果。由此形成了复杂围岩条件下大跨隧道修建的系统关键技术。
Based on some triple-line large-span tunnels under complicated geological condition in Neijiang-Kunming railway,the theoretical analysis,numerical simulation and field survey are used to analyse surrounding rock deformation characteristics and structure stability. Consequently,rational construction methods and assistant construction methods are determinated. After comparing different construction projects,optimal initial shoringmodes and parameters are proposed in practice. On the base of analyzing the stability characteristics of rock pile body,accordingly,the construction technique,proof-caving and consolidation measure are established,and satisfactory effect obtained in engineering practice.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第2期290-296,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
围岩
隧道工程
大跨隧道
岩堆体
稳定性
施工技术
tunneling engineering,large-span tunnel,rock pile body,stability,construction technique,assistantconstruction method
