摘要
偏压是隧道洞口段施工经常遇到的情况,给施工带来极大的困难。统计分析造成隧道偏压的原因,针对某高速公路隧道偏压段,应用数值模拟和现场监测分析其安全性。结果表明:造成隧道偏压的因素有地形因素、地质因素和工程因素;围岩变形和支护结构受力均能满足要求,现场地表沉降的监测值也较小。
Unsymmetrical press is often common in tunnel entrance section,which brings great difficulties to the construction. The factors causing unsymmetrical pressure were firstly analyzed, and for a unsymmetrical tunnel, numerical simulation and field monitoring were used to analyze of their safety. The results showed that：the factors causing unsymmetrical pressure is terrain, geology and construction; rock deformation and internal force of supporting structures can meet the requirements, on-site monitoring of ground value is also smaller.
出处
《公路工程》
2011年第5期144-148,共5页
Highway Engineering
关键词
隧道工程
偏压
施工安全
tunnel engineering
unsymmetrical pressure
construction safety
