Method of stabilising the foot area of a cast-in-situ element in a ground excavation and apparatus for carrying out the method

摘要

A method and an apparatus for carrying out the method are described with which the foot area of a cast-in-situ element can be stabilised by means of a grouting agent. To this end, two plates are arranged parallel to one another at a predetermined distance above the hole bottom and the resulting cavity is sealed to the outside. Grouting agent can be admitted to the cavity via a feed line. The borehole is filled with cast-in-situ concrete in such a way that the two plates are completey cast in from all sides, a predetermined breaking point being provided in the cast-in-situ concrete at the joint between the two plates. The grouting agent is then forced under pressure between the two plates until the predetermined breaking point is burst, so that the grouting agent discharges into the foot area of the cast-in-situ element.