摘要
介绍了安庆江堤丁马段的地质和工程条件 ,通过对险情、覆盖层条件和天然渗流场的分析对堤基进行了安全评价 ,说明了堤基加固处理的必要性 ;对几个典型年份的测压管观测资料进行了初步分析 ,结果表明郑家村、私姑沟、王家村等段的减压井都发挥着显著的作用 ,丁家村、汪家墩、谢圩拐的减压井已明显淤堵。认为不能因为现有部分减压井运行效果降低而轻易地否定这种工程措施 ,应该在深入研究的基础上改善设计、完善施工工艺 ,并通过合理的管理来延长减压井的寿命 。
The geological and engineering conditions at the Dingma Stretch of Anqing Dyke are presented.Through the analyses on dangerous phenomena,covering layers and natural seepage fields,a safety assessment on the dyke foundation is performed and the necessity of dyke reinforcement is demonstrated.Ground water level data obtained by piezometric tubes in three typical years are analyzed.The results show that relief wells at Zhengjiacun,Sigugou and Wangjiacun still play an improtant role,but that at Dingjiacun,Wangjiadun and Xieweiguai have been choked obviously.It is concluded that relief wells should not be rashly denied as a dyke reinforcement measure owing to the decreased effectiveness of some of them at some places.The improvement of design,consummation of construction technology and rational management of relief wells should be investgated in depth to make most of them efficient and to extend their service life.
出处
《长江科学院院报》
EI
CSCD
北大核心
2000年第4期38-40,44,共4页
Journal of Changjiang River Scientific Research Institute
关键词
安庆江堤
堤基
减压井
效果
淤堵
Anqing Dyke
dyke foundation
relief well
effectiveness
choke up
