摘要
三峡工程二期上游围堰轴线的选择经过近２０年的研究与勘察，所选定的围堰轴线避开了对防渗墙施工难度大的架空块球体区，及河床深槽地段。通过对围堰堰基的地形地貌及河床冲淤变化、地层岩性、断层构造、岩体风化、岩体透水性分析，提出了解决堰基对防渗墙造孔影响等问题的建议。
The selection of TGP Stage Ⅱ transverse cofferdam axis has been investigated for 20 years. The selected axis is kept away from porous block stone zone and deep river trough area which are difficult to build seepage proof wall. Through analyses with regard to the foundation topography, the scouring and silting variation of the river bed, the rock strata characteristics, the fault structure, the weathering characteristics and water permeability of rock mass, the suggestions to the drilling for seepage proof wall and so on are put forward.
出处
《人民长江》
北大核心
1997年第6期2-4,共3页
Yangtze River
关键词
围堰
防渗
区域工程地质
水利枢纽
Upstream cofferdam Leakproof cofferdam Regional engineering geology Sanxia Multipurpose Project
