摘要
结合某工程大断面地下洞室建设中围岩稳定问题,以开挖过程中对周围岩体的扰动破坏面积最小、产生的最大位移最小作为优化准则,采用数值方法对同一断面内两种不同的开挖顺序进行了模拟计算,分析比较,得出了最优的施工开挖顺序,为设计和施工提供了较为可靠的依据。
In combination with the stabilization problem of the surrounding rock in a large underground cavern project and in order to get proper excavating sequence, two planar models are founded and calculated by FLAC3D. The optimal excavating sequence is determined by the criteria of the minimum plastic area of plastic zone and minimum maximum displacement. The optimal excavating sequence gotten according to these two criteria could serve as reference in the design and construction.
出处
《地下空间与工程学报》
CSCD
2007年第z2期1459-1463,共5页
Chinese Journal of Underground Space and Engineering
关键词
地下洞室
施工
数值模拟
优化
underground cavern
construction
numerical simulation
optimization
