小浪底水利枢纽左坝肩4^#排水洞渗漏问题分析

Analysis about the Problems of Xiaolangdi Hydro-junction Left Dam Shoulder 4^# Row of Water-dunnel Leakage

小浪底水利枢纽左坝肩4#排水洞是地下发电厂房上游的主要排水帷幕,通过对其排水量长期观测资料与渗压计监测资料以及库水位之间的线性特征进行了综合分析,合理解释了4#排水洞的水量变化与渗漏来源和途径之间的关系,确定了洞水遵循未饱和岩体渗水规律,水量主要来自绕坝渗漏,初步判定了库水渗漏点位置.为绕坝渗漏治理方案提供了切实可靠的依据.

Xiaolangdi hydro-junction left dam shoulder 4^# row of water-dunnel is the main draining water curtain at the upstream of the underground electricity generation workshop, through the generalized analysis about the draining water＇s volume of its displacement longterm observation material and between the osmometer monitor material as well as the storehouse water level linear characteristic,it is explained reasonably the 4^# row of water-dunnel＇s water volume change and the leakage originate, between the way relations,it is determined that the hole water does not follow the saturated rocks body seep rule, the water volume mainly comes from circling the dam leakage;a storehouse water percolation position initially has been determined,In order to circle the dam leakage government plan to provide the practical reliable basis.