松柏山水库库首左岸岩溶渗漏及防渗处理研究

STUDY ON THE KARST LEAKAGE AND THE LEAKAGE CONTROL WAY AT THE LEFT FRONT OF SONGBAISHAN RESERVOIR

探讨了贵阳市松柏山水库库首左岸岩溶渗漏途径。研究认为，建库前北面就存在暗河系统，库首左岸库水主要是通过“乱冲洼地”渗漏。当库水位超过１１７０ｍ高程时，渗漏量增大，库水低于１１７０ｍ高程时，深部不存在大量渗漏。这一研究结果为水库防渗处理提供了地质依据。

This paper discusses the path of karst leakage at the left front of Songbaishan reservoir in Guiyang. The results show that there had been an underground river system before building the reservoir.When the water level is over 1170m a.s.l., karst leakage increases, and when the water level is below 1170m a.s.l., there won't be serious karst leakage. The results also indicate that the water in the left front of the reservoir mainly percolates through “Luanchong Depression”, which provides a theoretical basis for the leakage control.