Research on the Application of Slant Hole Grouting Process in the Undermining Hollow Area of Urban Main Road

Abstract

China has a huge number of underground goaf, when the new city main road crosses the goaf, a large number of non-migratable buildings may be left on the ground due to economic problems, resulting in the goaf does not have the condition of vertical drilling and grouting, so the slant hole grouting technology is of great significance in research. In this paper, we take a city main road under construction in Changchun City as an example to study the application of slant hole drilling grouting in the hollow area, and hope that it can provide reference examples for similar projects.