面板堆石坝趾板置于全风化基岩上的工程技术措施  

Engineering measures of CFRD's plinth placed on completely weathered rock

作　　者：丁韵 郑子祥[2] 

机构地区：[1]中国水电顾问集团华东勘察设计研究院,浙江杭州310014 [2]国家能源局大坝安全监察中心,浙江杭州310014

出　　处：《水利水电科技进展》2013年第6期80-82,94,共4页Advances in Science and Technology of Water Resources

摘　　要：为保证混凝土面板堆石坝岸坡趾板置于全风化基岩上的安全可靠性,分析了地基承载力、地基渗流控制、趾板稳定性和趾板不均匀沉降这4个关键技术问题,并结合越南宣光面板堆石坝工程提出了确保地基承载力、趾板与全风化基岩牢固连接、保证地基渗流稳定、设置趾板伸缩缝等工程技术措施。大坝监测结果表明,宣光面板堆石坝在运行期间渗流量较小,大坝变形正常。运用本文探讨的工程技术措施,将趾板置于全风化基岩上是安全可行的。In order to ensure the safety and reliability of CFRD＇ s plinth placed on the bank slope of completely weathered bedrock, this paper analyses four key technical issues, including the bearing capacity of foundation, the seepage control of foundation, the stability of plinth, and the differential settlement of plinth. With the engineering example of Vietnamese Tuyen Quang CFRD, some appropriate engineering measures were proposed, which include improving the beating capacity of foundation, strengthening the connection between plinth and completely weathered bedrock, ensuring the seepage stability of foundation and setting plinth expansion joints in different bedrock junctions. The dam safety monitoring results show that the seepage volume of Tuyen Quang CFRD is small, and the deformation regularity of the dam is normal. By application of the engineering measures proposed in this paper, placing the plinth on completely weathered bedrock is safe and feasible.

关 键 词：趾板 全风化基岩 渗控措施 地基承载力 面板堆石坝 

分 类 号：TV641.43[水利工程—水利水电工程]