<p>The arrangement (1) has a trench-filling body (2) e.g. corrugation block, surrounding a cuboid filling body interior and comprising filling body side walls lying opposite to each other. A distributor element (12) surrounds a distributor interior, and has distributor side walls connected with a distributor base plate. A distributor covering plate lies opposite to the base plate, and is connected with the distributor side walls. The distributor side walls have distributor side wall openings for connection with filling body side wall openings (7).</p>
