江垭大坝7、8坝段坝基帷幕K202溶蚀带,在经过4次水泥、超细水泥、改性水泥等补强灌浆后,检查孔压水试验q仍均大于1Lu,不能满足防渗要求,故经研究决定,采用化学灌浆对该部位进行处理,并达到了防渗目的。文章通过对K202溶蚀带特殊地质部位进行化学灌浆处理的施工过程、方法、灌浆效果等的总结,借以给类似地基条件工程提供参考。 After the reinforcement grouting of cement, ultrafine cement and modified cement, the test water pressure in the check hole q is still more than 1 Lu, which can not meet the requirements of seepage control , So after the study decided that the use of chemical grouting to deal with the site, and to achieve the purpose of impermeable. The article summarizes the construction process, method and grouting effect of chemical grouting of special geological parts of K202 dissolution zone to provide references for similar ground conditions.