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近几年来化学注浆已应用到地下室基础、河坝桥墩基础及井矿等工程堵水、防渗漏。但是,单液化学注浆技术施工难度大、工期长、造价高,且堵水率仅70％左右。若遇到地下渗水流速较大就无法施工。而双液高压化学注浆工艺技术不仅可解决上述问题,而且突破了传统的化学注浆堵水施工工艺,优化浆液配合比,缩短了凝结时间,提高了浆液在水中的稳定性及抗压、抗剪性能,在流砂层动水中能够继续施工。 一、工艺特点 1.工艺技术成熟,操作方便,在流砂层动水中
In recent years, chemical grouting has been applied to the foundations of basements, river dam pier foundations and wells and mines to stop water and prevent leakage. However, the single-fluid chemical grouting technology has great difficulty in construction, long construction period, high construction cost, and the water plugging rate is only about 70%. If you encounter a large underground seepage flow rate can not be constructed. The double-liquid high-pressure chemical grouting technology can not only solve the above problems, but also break through the traditional chemical grouting water plugging construction technology, optimize the slurry mix ratio, shorten the setting time, improve the stability of the slurry in the water and pressure, Shear performance can be continued in flowing sand layers. First, the process characteristics 1. Process technology is mature, easy to operate, in the moving layer of sand