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浅埋隐伏型岩溶塌陷基本特征是地下水水位变化频繁和地层浅部土洞、溶洞发育,构成铁路安全营运隐患。为此,施工和设计中确定了相应的岩溶路基加固原则和注浆工艺,通过现场施工监测、注浆前后钻孔注水试验对比、取芯观测和电法、面波检测等多种手段对注浆效果质量进行了全面检测。上述多种检测结果在施工前后及整个过程中的相互验证、检验,说明本次注浆加固工程质量很好,达到了预定要求。为今后其它同类的检测工程提供了可借鉴的经验。
Shallow buried karst collapse is the basic characteristics of frequent changes in groundwater levels and shallow layers of earth caves, karst development, constitute a potential safety hazard. Therefore, the corresponding karst embankment reinforcement principle and grouting technology are determined during construction and design. Through on-site construction monitoring, comparison of borehole water injection before and after grouting, coring observation and electric method, surface wave detection and other means, The quality of the pulp effect has been fully tested. The results of a variety of tests before and after the construction and the entire process of mutual verification, testing, indicating that the quality of this grouting reinforcement works well, reaching the predetermined requirements. For the future of other similar testing project provides a reference for the experience.