丹江口左岸土石坝测压管水位异常原因分析  

Cause Analysis on Piezometer Tubes Piezometric Level Abnormity of Left-bank Earth-rock Dam of Danjiangkou Project

作　　者：张光林[1] 游荣强[1] 王红梅[1] 王文方[1] 

机构地区：[1]丹江口水力发电厂,湖北丹江口442700

出　　处：《水利水文自动化》2007年第4期39-42,共4页Automation in Water Resources and Hydrology

摘　　要：2000年6月以来,丹江口水利枢纽左岸土石坝"1140-1上"测压管水位出现异常。通过对测压管灵敏度检测,结合多年监测资料,采用多种分析手段,对异常现象进行了分析研究,得到以下结论:在坝体加高过程中,测压管受碾压损伤,经多年使用,导致降雨引起的渗流水进入测压管内,致使水位发生异常,而土石坝坝体的防渗结构工作是正常的。After June 2000, there were piezometric level abnormity occurred in piezometer tubes 1140-1 of left- bank earth-rock failed dam of Danjiangkou hydro-junction. Through piezometer tubes sensitivity inspection, analysis and research are given based on monitoring data of years. It is concluded that roller compaction damage on piezometer tubes happened during process of dam body heightening, and application for years made seepage water caused byrainfall intrude into piezometer tubes, which finally led to piezometrie level abnormity, but seepage prevention structure of earthrock dam body can run normally.

关 键 词：丹江口 土石坝 测压管 水位异常 灵敏度检测 渗流 

分 类 号：TV641[水利工程—水利水电工程]