基于改进的非连续变形方法的洞室围岩稳定性分析

来源期刊:中南大学学报(自然科学版)2016年第2期

论文作者:李术才 赵成龙 朱维申 虞松

文章页码:593 - 599

关键词:DDA;平面应变模型;程序编制;洞室开挖;模拟试验

Key words:DDA; plane strain model; programming; cavern excavation; simulation test

摘    要:为了更符合实际工程,拓展非连续变形分析(DDA)的应用范围,将DDA中自带的平面应力问题转换为平面应变问题,对平面应变模型进行算法分析,并在VC++平台下程序实现;将岩体DDA方法平面应变模型应用于大型地下洞室开挖,并将模拟结果与已有大型洞室的物理实验结果进行对比。研究结果表明:DDA方法中平面应力模型的改进可行,与物理试验结果吻合度较好;洞室围岩的破坏与开挖的关系密切;DDA方法平面应变模型应用于大型地下工程,可以更好地分析洞室围岩的稳定性。

Abstract: In order to reflect the real rock engineering and expand the application range of discontinuous deformation analysis (DDA), the plane strain problem was considered, and its algorithm was analyzed and programmed based on VC++ platform. The plane strain model was applied to analyze the cavern excavation for large underground engineering. The results show that the algorithm of DDA is feasible and consistent with the results of laboratory tests well, and surrounding rock masses’ failure is related with the excavation process to a large degree. DDA plane strain model can be used to analyze the stability of cavern’s surrounding rock masses well.

相关论文

  • 暂无!

相关知识点

  • 暂无!

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号