摘要
系统考虑隧道工程建设过程中隧道围岩岩体的扩容和塑性软化特性,引入岩石扩容梯度和软化模量的概念,推导出均匀介质中软岩隧道围岩应力场和变形场的理论解析,与其他研究者理论模型进行比较,验证本文理论模型研究的正确性。通过算例分析了隧道工程岩体的扩容梯度和软化模量对围岩塑性区、破裂区半径以及围岩变形和压力的影响,研究结果对隧道支护设计与施工具有指导意义。
By taking the dilatancy and plastic softening of rock mass into account, introducing the concept of the dilatancy gradient and softening modulus, the new analytic solution of the stress and deformation of the soft rock tunnel are educed. Comparing this result with the results from other theory models, the model in this thesis is proved. Through the calculation of the example, the influence of the dilatancy gradient and softening modulus on the deformation and pressure of the surrounding rock is analyzed. The conclusion obtained has significance in guiding the supporting design and construction of the rock tunnel.
出处
《西安科技大学学报》
CAS
北大核心
2008年第3期455-460,共6页
Journal of Xi’an University of Science and Technology
关键词
软岩
扩容
塑性软化
变形
解析解
soft rock
dilatancy
plastic softening
deformation
analytic solution
