Scale Effect and Anisotropy of Deformation Modulus of Closely Jointed Basaltic Mass
详细信息
- 责任者：Zheng Wentang (Guangdong Electric Power Design Institute ; Guangzhou 510663 ; China) ; Xu Weiya
- 刊名：Journal of Engineering Geology
- 出版年：2010
- 卷期：18(4)
- 关键词：节理岩体 ; jointed rock mass ; 变形模量 ; deformation modulus
- 页码：p.559-565
- 图表：6 illus., 2 tables, 13 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
In this paper, the developed plunging colonnade and multi-level structural planes of closely jointed basaltic mass in China were discussed. The deformable discrete element method was applied to the modeling of its 3 dimensional numerical model.Then, the scale effect and anisotropy of the in-situ tests were studied by numerical bearing plate test with different plate diameters. The results show that the cause is mainly due to scale effect of bearing plate tests. The anisotropy of in-situ tests decreases as the diameter of bearing plate increases. The closely jointed basaltic mass can be regarded as an isotropic rock mass when the diameter of bearing plate is over 6 m.