Macro-mechanical properties of columnar jointed basaltic rock masses  

作　　者：狄圣杰 徐卫亚 宁宇 王伟 吴关叶 

机构地区：[1]Institute of Geotechnical Engineering, Hohai University [2]Kunming Investigation and Design Institute, China Hydropower Engineering Group Co. [3]East China Investigation and Design Institute, China Hydropower Engineering Group Co.

出　　处：《Journal of Central South University》2011年第6期2143-2149,共7页中南大学学报（英文版）

基　　金：Projects(50911130366, 50979030) supported by the National Natural Science Foundation of China

摘　　要：From the geological structure of the columnar jointed rock mass, a visual model was established in software AUTOCAD by programming based on the algorithm of the Voronoi diagram. Furthermore, a program to convert the AUTOCAD model into 3DEC (3-dimensional distinct element code) model was developed, and a numerical model was established in 3DEC. Moreover, the results of triaxial compression tests of columnar jointed rock masses were simulated numerically. The REV (representative element volume) scale was studied, and the result shows that the REV size is 3 m × 3 m. The proposed approach, the established model and the numerical simulation were applied to study the macro-mechanical properties and the equivalent strength parameters of the columnar jointed rock mass. The numerical simulation results are in good accordance with the in-situ test results.From the geological structure of the columnar jointed rock mass, a visual model was established in software AUTOCAD by programming based on the algorithm of the Voronoi diagram. Furthermore, a program to convert the AUTOCAD model into 3DEC （3-dimensional distinct element code） model was developed, and a numerical model was established in 3DEC. Moreover, the results of triaxial compression tests of columnar jointed rock masses were simulated numerically. The REV （representative element volume） scale was studied, and the result shows that the REV size is 3 m ×3 m. The proposed approach, the established model and the numerical simulation were applied to study the macro-mechanical properties and the equivalent strength parameters of the columnar jointed rock mass. The numerical simulation results are in good accordance with the in-situ test results.

关 键 词：columnar joint Voronoi diagram three-dimensional distinct element code representative element volume mechanicalparameters 

分 类 号：TU452[建筑科学—岩土工程]