Method for the production of a core sample in soils contaminated by hazardous materials and device for implementing such a method

摘要

a method and a device for manufacturing a bohrkerns in a base plate (50) gefahrstoffbelastetem material / oberbelag (52) with a bohrkernmaschine (12) with a drill bit (58) with required (16), whereby the required (16) rinsing water (spw) on a vorlaufwasserleitung (60) zugefu00fch rt rt rt rt rt rt rt is characterized by that in a water circuit.in the area of required (16) wasserdichtend (18) surrounded by a dichteinheit, the required (16) amount of rinsing water (spw) wastewater (smw) with impurities (56) between the dichteinheit (18) and the oberbelag (52) formed during the drilling operation dichtkammer (20) are extracted.the wastewater (smw) then the impurities (56) separated and the back flushing water (spw) received the required (16) is supplied.