中南大学学报（自然科学版）2016，Vol.47Issue(11)：3800-3807,8.DOI:10.11817/j.issn.1672-7207.2016.11.025
基于连续介质的裂隙岩体流固耦合数值分析
Numerical analysis of fluid-solid coupling in fractured rock mass based on continuous medium
摘要
Abstract
Considering that reservoir water level fluctuation or rainstorm infiltration will cause landslide, the effect of crack damage effect on the permeability tensor was studied. Through theoretical deduction, the analysis model of coupling of seepage field and damage field in fractured rock mass was put forward. Then taking the Hubei Pankou hydropower station intake-slope as object, a numerical analysis method of fluid solid coupling seepage flow in fractured rock mass was established based on the equivalent continuous medium. The results show that deformation of slope is mainly based on unloading springback during excavation;deformation range increases with the increase of excavation;the influence of slope excavation at all levels on the deformation of adjacent level slope is the most significant;distance slope section is gradually weakened. After the completion of the excavation, slope of the plastic zone is mainly layed along the near dam outer edge of the distribution, and the distribution range is small and in the surface of rock mass. Three-dimensional numerical calculation of fluid solid coupling model of fractured rock mass can simulate the distribution law of the displacement field, stress field, plastic zone and tensile stress zone of the slope excavation process.关键词
滑坡/渗透压力/连续介质/流固耦合/数值计算Key words
landslide/osmotic pressure/continuous medium/fluid-solid coupling/numerical calculation分类
建筑与水利引用本文复制引用
唐佳,彭振斌,何忠明..基于连续介质的裂隙岩体流固耦合数值分析[J].中南大学学报（自然科学版）,2016,47(11):3800-3807,8.基金项目
国家自然科学基金资助项目(51508042)(Project(51508042) supported by the National Natural Science Foundation of China) （51508042）
