摘要
作用在喷射混凝土支护上的荷载和隧洞安全度,同下面两者有直接关系:(1)喷射混凝土早期阶段,其刚度和强度随时间的增长过程;(2)掌子面对围岩的临时支护效应及其前进速率。本文利用等价平面应变问题对此进行了探讨,并作了实测分析。文中所得研究成果可供隧洞开挖施工程序设计参考。
The load pressure on shotcrete lining and the safety of the tunnel during construction depend upon I , the growth of the strength and the stiffness of shotcrete at early age; 2, the temporary sup port effect provided by tunnel face and the advancing speed of the face. This paper presents the study on the influences of the early age properties of shotcrete on tunnel lining pressure, by means of the e quivalent plane strain problem. This research result is provided for reference in construction design of excavation of tunnels.
出处
《长江科学院院报》
CSCD
北大核心
1992年第3期8-16,共9页
Journal of Changjiang River Scientific Research Institute
关键词
喷射混凝土
围岩
支护
隧洞
开挖
shotcrete
country rock support
early age properties of concret
