摘要
水电开发中深厚冲积覆盖层情况已非常普遍,在深厚覆盖层上修建土石围堰是一个必然趋势。在分清土石围堰与土石坝差别的基础上,从围堰堰体及堰基防渗、围堰边坡稳定及基坑排水、围堰各主要部位连接、围堰安全监测等方面分析总结了深厚覆盖层上修建土石围堰的主要技术问题与处理措施;提出了土石围堰材料力学参数和本构模型的合理选取、围堰安全储备、覆盖层地基合理防渗方式选取等需进一步研究的问题。
The deep alluvial overburden in hydropower development is common encountered and the construction of cofferdam on deep overburden is an inevitable trend. Based on the difference between rockfill cofferdam and earth-rock dam, the main technical problems and treatment measures for the structural safety of rockfill cofferdam on deep overburden are analyzed from the aspects of cofferdam body and cofferdam foundation seepage prevention, cofferdam slope stability and foundation pit drainage, the connection of main cofferdam parts and the safety monitoring of cofferdam. The problems needed for further research are also presented, including the rational selection of mechanical parameters and constitutive models of rockfill cofferdam materials, the safety reserve of cofferdam and the selection of reasonable anti-seepage methods for overburden foundation.
作者
张飞
文志颖
朱晓忠
刘其文
ZHANG Fei;WEN Zhiying;ZHU Xiaozhong;LIU Qiwen;(Guizhou Investigation ＆ Research Institute of Hydraulic and Hydroelectric Engineering, Guiyang 550002, Guizhou, China;Guizhou Engineering Technology Research Center for Exploitation and Utilization of Water Resources in Karst Region, Guiyang 550002, Guizhou, China)
出处
《水力发电》
北大核心
2018年第11期44-47,59,共5页
Water Power
基金
贵州省科技计划项目(黔科合重大专项字[2017]3005)
关键词
深厚覆盖层
土石围堰
结构安全
技术措施
deep overburden
rockfill cofferdam
structural safety
technical measures
