Application of high pressure jet grouting technology in seepage control of Qiyan reservoir dam
Since the impoundment of Qiyan reservoir,the seepage behind the dam increased gradually as the water level rose.On April 30,2015,when the water level reached the elevation 1 218 m,the seep-age hit 12 L/s,which was far beyond the designed allowable range and seriously affected the dam safety and stability.After analysis of the investigation results of dam foundation,the previous investigation re-sults and the geological data during construction period,the curtain grouting by high-pressure jet grout-ing was adopted to control the seepage and the current operation showed that it was effective.This paper introduces the treatment technology,to provide reference for similar projects.
万方数据
维普
