US 5,816,748 AGranted

Method for sealing off ground sites

AssigneeFlowTex Technologie-Import von Kabelverlegemaschinen GmbH

InventorsKlaus Kleiser, Hans-Joachim Bayer, Jorg Ganger, Klaus-Dieter Bilkenroth, Ortwin Caldonazzi, Herbert Baier, Manfred Heilmann, Hans-Jurgen Kretzschmar

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Abstract

The invention pertains to a process for sealing off ground sites in particular a waste dump, abandoned dumping grounds, pipelines or the like, or also excavated construction sites, using sealants, wherein a fully course-controlled boring technique is used to drive at least one bore underneath the ground site from the surface outside the ground site and the sealant is injected into the soil surrounding the bore. To implement the process, jets for injecting the sealant into the soil are mounted on the steerable remote-controlled boring head.

Claims24

Dependent claims

A method for sealing a contaminated soil site, comprising the steps of

investigating the course of the contour of the contamination within said site;
advancing a plurality of boreholes underneath said site using a fully controllable, remotely controlled drilling head;
while advancing said drilling head or while retracting said drilling head within one of said plurality of boreholes, injecting a sealant at high pressure in the region of soil surrounding said one borehole to form an injection site, said high pressure being characterized as being sufficient to introduce said sealant into the region of soil up to distances of two to three meters from said said one borehole;
wherein said plurality of boreholes are substantially parallel to one another and spaced from one another so that the injection sites of adjacent boreholes overlap;
and
wherein the step of advancing said fully controllable, remotely controlled drilling head comprises forming a layer of sealant that is adapted to said contour of contamination within said site.

3 more elements

Dependencies are inferred from the claim text.