摘   要：基于苏州某地铁车站基坑工程，研究了GS土体硬化剂对不同养护龄期下的粉质黏土和粉砂夹粉土抗渗性能的影响，并进行了现场试验验证。结果表明：掺入GS土体硬化剂能有效提高粉质黏土和粉砂夹粉土的抗渗性能，且随着GS土体硬化剂掺量和养护龄期的增加，提高效果更好；GS土体硬化剂在现场试桩试验中的应用效果较好，可为其在相关工程中的进一步推广应用提供参考。

Abstract: Based on the foundation pit project of a subway station in Suzhou, the influence of GS soil hardening agent on the impermeability performance of silty clay and silty sand mixed with silty soil at different curing ages was studied, and on-site tests were conducted to verify the results. The results show that the addition of GS soil hardening agent can effectively improve the impermeability of silty clay and silty sand mixed with silty soil, and the improvement effect is better with the increase of GS soil hardening agent content and curing age. The application effect of GS soil hardening agent in on-site pile testing is good, which can provide reference for its further promotion and application in related engineering.