Method and apparatus for injecting material into soil and / or under construction

摘要

The invention relates to a method and apparatus for injecting a substance into soil and/or under a structure, whereby a reacting substance (3) is injected into the soil and/or under the structure through an injection bar (2). The reacting substance (3) is a substance which expands and hardens as a consequence of a chemical reaction. After the injection, the reacting substance (3) is removed from inside the injection bar (2). After this, the reacting substance is reinjected by using the same injection bar (2).