论文部分内容阅读
新疆下坂地水利枢纽工程地处高寒、高海拔的山区,坝基覆盖层厚度达147.95m,透水性强,易坍塌和漏浆,块石坚硬,坝基防渗处理难度罕见。针对这一工程问题进行了坝基防渗墙试验研究,结果表明,以大深度混凝土防渗墙为主墙,下接帷幕灌浆的墙幕结合方案。本文针对新疆下坂地深厚覆盖层坝基防渗墙进行了试验研究,找出了防渗墙有效的施工深度及合理的施工方法,从而为坝基防渗墙设计施工提供了可靠的依据。
Xinjiang Xiabandi Water Conservancy Project is located in the alpine and high altitude mountainous areas. The thickness of the dam foundation cover is 147.95m. It has high water permeability, easily collapses and leachate, and the block rock is hard. The anti-seepage treatment of the dam foundation is rare. Aiming at this engineering problem, the dam foundation impervious wall is studied. The results show that the curtain wall combined with curtain grouting under the main wall of the deep concrete cutoff wall. In this paper, a study is made on the seepage-proofing wall of deep underburden dam in Xinshan, Xinjiang, and the effective construction depth and reasonable construction method of the seepage prevention wall are found out, which provides a reliable basis for the design and construction of the seepage prevention wall of the dam foundation.