基于UDEC的高压隧洞内水外渗离散元分析  

UDEC-based Discrete Element Analysis of Seepage from Inside to Outside for High Pressure Tunnel

作　　者：张巍[1,2] 陈云长[3] 黄立财[3] 刘林军[3] 

机构地区：[1]中山大学工学院,广州广东510275 [2]中山大学岩土工程与信息技术研究中心,广州广东510275 [3]广东省水利电力勘测设计研究院,广州广东510635

出　　处：《水力发电》2015年第11期39-42,共4页Water Power

摘　　要：基于UDEC的离散元法,选取典型地质剖面,对阳江抽水蓄能电站高压水道进行内水外渗裂隙渗流研究。结果表明,高压隧洞的固结灌浆能有效降低围岩的裂隙水压力及其水力梯度,且隧洞上部岩体的水力梯度降低比下部岩体明显。与有限元计算成果相比,计算结果总体规律相似,离散元法渗流水头等值线相对凌乱,但其考虑的地质模型更符合实际,可与有限元法互为补充。The discrete element method based on UDEC is used to study the fracture seepage from inside to outside of the typical geological section of high pressure tunnel in Yangjiang Pumped-storage Power Station. The study results show that, the consolidation grouting of high pressure tunnel can effectively reduce the rock mass fissure water pressure and hydraulic gradient, and the hydraulic gradient decreasing effect for upper rock mass is more obvious than lower rock mass. Comparing with finite element calculation results, the general laws are similar, but the seepage head contour of discrete element method is relatively messy. Due to the geological model of discrete element method is more practical, it can be mutual complement to finite element method in actual project study.

关 键 词：高压隧洞 内水外渗 渗流 离散元 UDEC 阳江抽水蓄能电站 

分 类 号：TV743.323[水利工程—水利水电工程]