Application of Grouting Filling Technology in Foundation Treatment of Goaf

With the continuous promotion of urbanization and the in-depth development of urban construction, the demand for development and construction in goaf is increasing. The concealment and uncertainty of goaf treatment are analyzed from the aspects of the distribution of goaf, the comparison and selection of treatment schemes, and the treatment of key construction problems through an engineering example of grouting filling in a goaf. A variety of physical detection methods, such as multi-channel transient surface wave test and wave velocity test, were comprehensively used, and goaf filling treatment effect was evaluated combining with drilling and coring, settlement monitoring and other means. The results show that the grouting filling is effective and meets the design requirements, which can provide a reference for the grouting filling treatment project in goaf.