混凝土坝施工缝下游面防渗方法的探讨

Probe into anti-seepage method for DS face of concrete dam construction joint

混凝土坝体渗水处理目前方法很多,一般采用上堵下排的方法。但在特定的部位,只能从背水面止漏时,难度很大。通过艹侵窝水库的实例,选用澎内传401表面处理剂、872聚氨酯密封胶及SPC砂浆等国内新型防水材料,充分利用各种材料特性,联合使用,较好地解决了这一难题。

There are many treatment method for seepage of concrete dam body. Blocking at upstream face and drainage at downstream face is one generally adopted. However, for some locations, only the downstream face can be repaired, rendering much difficulty. According to the practice of Shenwo reservoir in Liaoning Province, some new domestic waterproofing materials including Pengneichuan 401 surface treatment agent, 872 polyurethane sealant and SPC sand grout etc. were jointly utilized. The characteristics of various materials were full made use of, by which this problem was solved relatively well.