ABSTRACT

The purpose of the study was to select the methods of material selection (foam reagents) for the soil conditioning during the tunneling with EPB shields in various Moscow geological conditions. The report contains: the results of laboratory studies on the additives selection for each type of soil and recommendations for optimal use of them; the results of full-scale testing checking the effect of additives-conditioners on the technological properties of the soil under various hydro-geological conditions at three construction sites using EPB TBM Ø 10.82 m. In the course of the full-scale experiment, the laboratory selection correctness of foam agents for conditioning the soil was verified.