雅砻江锦屏二级深埋隧洞围岩渗流特性初步研究  

Study on Seepage Characteristics of Surrounding Rock Mass of Jinping Deep Buried Tunnels for Second Level Power Station of Yalong River

作　　者：崔皓东[1] 张家发[1] 邬爱清[1] 朱国胜[1] 

机构地区：[1]长江科学院,武汉430010

出　　处：《铁道工程学报》2011年第7期83-87,104,共6页Journal of Railway Engineering Society

基　　金：国家"十一五"支撑计划课题(2008BAB29B01);中央级公益性科研院所基本科研业务费(CKSF2010017);长江科学院博士启动基金(CKSQ2010083)

摘　　要：研究目的:锦屏二级工程地质条件复杂,4条长达17 km的引水隧洞具有超埋深,大直径特点。为更全面分析锦屏二级隧洞围岩渗流特性,采用有限元方法,建立渗流简化模型,重点研究深埋引水隧洞不同条件下的渗流场特征。研究结论:研究表明,不同灌浆圈厚度及渗透性对围岩渗流特性影响较小,运行期施工排水洞及A,B线辅助洞封堵会引水隧洞围岩渗压增加明显;成果可为锦屏二级深埋隧洞的设计及施工提供参考依据。Research purposes： The geological conditions are complex in the area of the Jinping second level power station and there are four tunnels with 17km length, extreme burial -depth and large diameter. A simplified seepage model is established with FEM for the surrounding rock mass of tunnels in order to mainly research the seepage characteristics of the tunnel under the different conditions. Research conclusions：The results show that the seepage characteristics is less influencd by grouting circle thickness and permeability under different conditions, and the seepage pressure of surrounding rock mass increases significantly beacause of the blocking the drainage tunnels and the auxiliary holes of the A and B lines during operation period. The results can be as the reference basis for the design and construction of Jinping deep buried tunnel for the second level power station.

关 键 词：锦屏二级 深埋隧洞 渗流特性 渗控效果 

分 类 号：O319.56[理学—一般力学与力学基础] TU471.6[理学—力学]