花岗岩地区病险水库工程地质问题及处理措施  

Engineering geological problems of dangerous reservoirs in granite region and treatment measures

作　　者：朱永华 吕锋[2] 

机构地区：[1]江西省丰城市水利局,江西丰城331100 [2]水利部长江勘测技术研究所,湖北武汉430011

出　　处：《人民长江》2011年第22期35-37,共3页Yangtze River

摘　　要：花岗岩地区病险水库的险情主要为坝基渗漏,高水位运行期坝脚易发生管涌而限制水库效益的发挥。以某病险水库为例,分析总结了花岗岩地区以风化料作为坝体填料的主要地质问题;对坝基花岗岩深厚的风化壳、差异风化以及河床冲洪积砂砾卵石层等主要工程地质问题进行了评价;针对主坝、副坝及溢洪道的防渗加固,提出了相应的工程措施。对其他典型花岗岩地区的病险水库工程勘察有一定参考价值。The major dangers of dangerous reservoirs in granite region include foundation seepage of main dam and auxiliary dam,piping in dam toe of main dam in the operation period at high water level,which restricts the profit of the reservoir.A dangerous reservoir in granite area is taken as an example,and the main geologic problems of using weathered materials as the fillings of the dam body are analyzed and summarized.The main geological problems such as thick regolith of granite mass of the dam foundation,differential weathering,and the alluvium sandy gravels in river bed are evaluated.In view of the anti-seepage and reinforcement of main dam,auxiliary dam and spillway,the engineering measures are proposed accordingly.

关 键 词：花岗岩风化壳 差异风化 砂砾卵石 坝体渗漏 坝基渗漏 大坝防渗 病险水库 

分 类 号：P642[天文地球—工程地质学]