摘要
本文通过对泥岩和石灰岩试样的多组三轴压缩试验结果,分别回归得到泥岩和石灰岩在塑性应变软化阶段中的内聚力和内摩擦角随塑性应变值而变化的关系式,定量地给出侧压力与峰值抗压强度和残余强度的关系式,并对埋置在泥岩岩体中的圆形隧洞周边围岩及喷射混凝土支护进行力学分析与计算。
Through the results of the triaxial compression tests to specimens of mudstone and limestone, at the plastic strain-softening stage the formulae pertaining to mudstone and limestone＇s cohesion and angle of the internal friction changing with the value of the plastic strain are obtained in the paper. The formulae pertaining to the compression strength and residual strength changing with the different lateral pressures are also quantitatively acquired. Then, the mechanical effects of shotcrete support on the surrounding rock mass of a round tunnel are calculated and analysed.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
1992年第3期257-262,共6页
Journal of Tongji University:Natural Science
基金
国家自然科学基金
关键词
隧道
围岩
喷射混凝土
支护
压力
Strength parameter
Plastic strain softening
Plastic zone in tunnel-surrounding-rock mass
Pressure acting on support
