摘要
基于湿度应力场理论 ,采用三维非线性有限元方法 ,有效地模拟了膨胀岩洞室开挖和支护过程中遇水膨胀现象。对多种支护方案进行分析比较表明 ,水的损伤软化作用和膨胀岩的本身膨胀性能对其洞室稳定性有重要的影响 ,并进一步了解了洞室发生膨胀的力学机制及其支护效应 ,对膨胀性围岩洞室的设计、施工具有实际指导意义。
Based on the theory of the humidity stress field, some swelling pr oblem of the underground chamber under the action of water is simulated effectiv ely by means of three?dimensional finite element numerical simulation. It shows thats the damage action of water and the self capability of swelling ro ck are important factors influencing the stability of underground chamber by analys is of some chamber supporting scheme. The mechanical effect of interaction betwe en water and swelling rock and effect of support is deeply known . At prese nt, the research can be provided as an efficient reference to the design and con struction for some underground chamber projects.
出处
《岩土工程技术》
2004年第6期303-306,共4页
Geotechnical Engineering Technique
关键词
膨胀岩
地下洞室
湿度应力场
有限元分析
swelling rock
underground chamber
humidity s tress field
finite element analysis
