Cutter and a method for providing a piping protection system in a dike body

Abstract

The invention relates to a cutter and a method for making a barrier screen in a dike body for preventing soil particles. The cutter comprises: —a part that is oriented vertically when in use and that comprises a supply device for supplying to soil material of said dike body a binder for binding soil material that has been cut by said cutter, said vertically oriented part at a lower portion thereof being provided with chisels for cutting said soil material during a downward movement of said cutter; —as well as a part that is horizontally oriented when in use and that extends at both sides of said vertical part and wherein said parts that are provided at both sides comprise cylinders that are rotatable about a horizontal rotation axis and wherein said cylinders are provided with ground cultivating members for mixing soil material that has been machined by said chisels and said ground cultivating members.

1 . A cutter ( 17 ) for making a barrier screen in a dike body for preventing transport of soil particles, said cutter ( 17 ) comprising: —a part ( 19 ) that is oriented vertically when in use and that comprises a supply device ( 21 ) for supplying to soil material of said dike body a binder ( 15 ) for binding soil material that has been cut by said cutter ( 17 ), said vertically oriented part ( 19 ) at a lower portion thereof being provided with chisels ( 24 ) for cutting said soil material during a downward movement of said cutter ( 17 ); —as well as a part ( 20 ) that is horizontally oriented when in use and that extends at both sides of said vertical part ( 19 ) and wherein said parts ( 20 ) that are provided at both sides comprise cylinders ( 15 ) that are rotatable about a horizontal rotation axis and wherein said cylinders are provided with ground cultivating members ( 26 ) for mixing soil material that has been machined by said chisels ( 23 ) and said ground cultivating members ( 26 ). 
     
     
         2 . A cutter ( 17 ) according to  claim 1 , wherein said ground cultivating members ( 26 ) are provided on the cylinders' surface ( 25 ) spiral wound. 
     
     
         3 . A cutter ( 17 ) according to  claim 1 , wherein the supply device feeds the binder ( 15 ) towards the horizontal cylinders ( 25 ). 
     
     
         4 . A cutter ( 17 ) according to  claim 1 , wherein the chisels ( 24 ) are shaped as a rotating milling head ( 23 ). 
     
     
         5 . A cutter ( 17 ) according to  claim 2 , wherein the ground cultivating members ( 26 ) are provided on the cylinders ( 25 ) in a single pitch. 
     
     
         6 . A cutter ( 17 ) according to  claim 1 , wherein the cylinders ( 25 ) that are positioned at both sides of said vertical part ( 19 ) rotate in opposite directions. 
     
     
         7 . A cutter ( 17 ) according to  claim 1 , comprising two sets of horizontally oriented parts ( 20 ), wherein at both sides of said vertically oriented part ( 19 ) two horizontally oriented parts are positioned. 
     
     
         8 . A cutter ( 17 ) according to  claim 1 , wherein the ground cultivating members ( 26 ) are embodied for cutting at least partially mixing and cutting said soil material. 
     
     
         9 . A cutter ( 17 ) according to  claim 1 , further comprising a binder container for containing said binder ( 15 ) and a supply pipe from said container to said supply device ( 21 ). 
     
     
         10 . A method for making a barrier screen in a dike body for preventing transport of soil particles, by using a cutter ( 17 ) according to  claim 1 , said barrier screen being in a substantially standing position and extending in a longitudinal direction of said dike body, comprising the step of urging the cutter ( 17 ) substantially vertically into the dike body and mixing soil material of said dike body with binder ( 15 ). 
     
     
         11 . A method according to  claim 10 , comprising the steps of repeatedly urging the cutter ( 17 ) into the dike body ( 4 ) and mixing  15  soil material of said dike body with binder ( 15 ) at at least partially staggered positions for making a continuous barrier screen ( 11 ) of partially overlapping columns ( 12 ) inside said dike body ( 4 ). 
     
     
         12 . A method according to  claim 10 , wherein said soil material of said dike body ( 4 ) is milled to an average particle volume of less than 10 cubic millimeter of soil material, preferably less than 2 cubic millimeter, more preferably less than 1 cubic millimeter. 
     
     
         13 . A barrier screen ( 11 ) in a dike body ( 4 ) comprised of at least partially overlapping columns ( 12 ) of soil material of said dike body ( 4 ) and binder ( 15 ), obtained by means of a method according to any of  claims 10  to  12 .