水利水电科技进展2018，Vol.38Issue(4)：64-69,94,7.DOI:10.3880/j.issn.1006-7647.2018.04.011
向家坝水电站左岸近坝边坡抬升变形数值模拟
Numerical simulation of uplift deformation of left bank slope near dam of Xiangjiaba Hydropower Station
摘要
Abstract
To further understand the uplift deformation phenomenon that occurs at the left bank slope near the dam of Xiangjiaba Hydropower Station,hydro-mechanical coupling numerical tests were used to study the mechanism of rock mass expansion and deformation.Based on the hydro-mechanical coupling analysis,the uplift deformation process was simulated.The spatial distribution of the deformation was obtained and the control effect of the pressure relief holes on the uplift deformation was evaluated.The results indicate that the volume expansion strain of the rock mass increases with the permeability coefficient and decreases with the increase of deformation modulus.The initial stress has little effect on uplift deformation.Variation of the seepage field is the direct cause of uplift deformation and the uplift deformation is also the result of the interaction between seepage field and stress field.It is reasonable to use hydro-mechanical coupling theory to reveal the uplift deformation mechanism.Deep drainage holes for pressure relieving are effective for the controlling of the uplift deformation.关键词
边坡/抬升变形/泄压孔/流固耦合理论/数值仿真/向家坝水电站Key words
slope/uplift deformation/pressure relief hole/hydro-mechanical coupling theory/numerical simulation/Xiangjiaba Hydropower Station分类
建筑与水利引用本文复制引用
蒋中明,李双龙,冯树荣,钟辉亚,李学政,曾祥喜..向家坝水电站左岸近坝边坡抬升变形数值模拟[J].水利水电科技进展,2018,38(4):64-69,94,7.基金项目
国家自然科学基金(50778070) （50778070）
