Method and arrangement for consolidating soil in a space to be consolidated

Abstract

The invention relates to a method for consolidating soil in a space ( 10 ) to be consolidated. In the method, the consolidating agent is fed from a feeding container ( 9 b ) into the soil by mixing means ( 7 ) arranged in the consolidating agent feeding unit ( 4 ). The consolidating agent feeding unit ( 4 ) is positioned in connection with the transfer means ( 1 ) and the consolidating agent mixing means ( 7 ) arranged in the consolidating agent feeding unit ( 4 ) are moved by the transfer means ( 1 ) optionally at any point in the space ( 10 ) to be consolidated in the vertical direction (y), horizontal direction (x) and/or in a perpendicular or essentially perpendicular direction to the plane running through the said vertical direction and horizontal direction. The invention also relates to an arrangement for implementing the method.

1 . A method for consolidating soil in a space to be consolidated ( 10 ), in which method consolidating agent is fed from a feeding container ( 9   b ) into the soil by mixing means ( 7 ) arranged in a consolidating agent feeding unit ( 4 ), the consolidating agent feeding unit ( 4 ) is positioned in connection with the transfer means ( 1 ) and the consolidating agent mixing means ( 7 ) arranged in the consolidating agent feeding unit ( 4 ) are moved by the transfer means ( 1 ) optionally at any point in the space ( 10 ) to be consolidated in the vertical direction (y), horizontal direction (x) and/or in a perpendicular or essentially perpendicular direction to the plane running through the said vertical direction and horizontal direction, characterised in that a supporting bridge ( 2 ) included in the transfer means ( 1 ) is positioned so as to extend across the space ( 10 ) to be consolidated and in connection with the supporting bridge are positioned first transfer elements ( 3 ) for moving the consolidating agent mixing means ( 7 ) in a vertical direction (y) and/or horizontal direction (x), and in the transfer means ( 1 ) are positioned second transfer elements ( 5 ) and the supporting bridge ( 2 ) and consolidating agent feeding means ( 4 ) with mixing means ( 7 ) are transferred by the second transfer elements ( 5 ) in a perpendicular or essentially perpendicular direction to the plane running through the said vertical direction (y) and horizontal direction (x), and providing both ends of the supporting bridge ( 2 ) with the second transfer means ( 5 ), for supporting the supporting bridge ( 2 ) against the bearing material ( 11 ) and/or the foundation soil ( 12 ) where by the distance (A) between the second transfer means ( 5 ) is adjusted to correspond to the width of the space ( 10 ) to be consolidated in longitudinal direction of the supporting bridge ( 2 ). 
     
     
         2 . A method as claimed in  claim 1 , characterised in that the horizontal transfer direction (x) is the same as the longitudinal direction of the supporting bridge ( 2 ), and that the horizontal transfer direction (x) remains essentially the same in the different positions of the supporting bridge ( 2 ). 
     
     
         3 . A method as claimed in  claim 1 , characterised in that the first and/or second transfer elements ( 3 ,  5 ) comprise a transfer car or transfer cars which run on wheels, rolls and/or guides ( 6 ). 
     
     
         4 . A method as claimed in  claim 1 , characterised in that between the feeding container ( 9   b ) and the mixing means ( 7 ) is positioned an elongated consolidating agent feeder pipe ( 8 ) which is in connection with the transfer means ( 1 ) over a part of its longitudinal distance. 
     
     
         5 . An arrangement for consolidating soil in a space ( 10 ) to be consolidated, the arrangement comprising a consolidating agent feeding unit ( 4 ), in which are arranged consolidating agent mixing means ( 7 ) and a feeding container ( 9   b ) from which the consolidating agent can be fed into the soil by the mixing means ( 7 ), transfer means ( 1 ) positioned in connection with the consolidating agent feeding unit ( 4 ), by means of which the consolidating agent mixing means ( 7 ) fitted in the consolidating agent feeding unit ( 4 ) can be optionally moved at any point in the space ( 10 ) to be consolidated in the vertical direction (y), horizontal direction (x) and/or in a perpendicular or essentially perpendicular direction to the plane running through the said vertical direction (y) and horizontal direction (x), characterised in that the transfer means ( 1 ) comprise a supporting bridge ( 2 ) which is positioned so as to extend across the space ( 10 ) to be consolidated, and first transfer elements ( 3 ) arranged in connection with the supporting bridge ( 2 ) for moving the consolidating agent mixing means ( 7 ) in a vertical direction (y) and/or horizontal direction (x), and second transfer elements ( 5 ) arranged in connection with the supporting bridge ( 2 ) for moving the supporting bridge ( 2 ) and the consolidating agent mixing unit ( 4 ) and the mixing means ( 7 ) in a perpendicular or essentially perpendicular direction to the plane running through the said vertical direction (y) and horizontal direction (x), and both ends of the supporting bridge ( 2 ) are provided with second transfer means ( 5 ), for supporting the supporting bridge ( 2 ) against the bearing material ( 11 ) and/or the foundation soil ( 12 ) where by the distance (A) between the second transfer means ( 5 ) is adjusted to correspond to the width of the space ( 10 ) to be consolidated in longitudinal direction of the supporting bridge ( 2 ). 
     
     
         6 . An arrangement as claimed in  claim 5 , characterised in that the horizontal transfer direction (x) is arranged by means of the first transfer elements ( 3 ) to be the same as the longitudinal direction of the supporting bridge ( 2 ), and that the horizontal transfer direction (x) is arranged to remain the same in the different positions of the supporting bridge ( 2 ). 
     
     
         7 . An arrangement as claimed in  claim 5 , characterised in that the first and/or second transfer elements ( 3 ,  5 ) comprise a transfer car or transfer cars which run on wheels, rolls and/or guides ( 6 ). 
     
     
         8 . An arrangement as claimed in  claim 5 , characterised in that between the feeding container ( 9   b ) and the mixing means ( 7 ) is positioned an elongated consolidating agent feeder pipe ( 8 ) which is in connection with the transfer means ( 1 ) over a part of its longitudinal distance. 
     
     
         9 . An arrangement as claimed in  claim 5 , characterised in that feeding container ( 9   b ) is in a separate movable carriage ( 9 ) with means for pressurising air for feeding the consolidating agent by means of compressed air.