Method and device for forming a fluid permeation control layer of the ground
First Claim
1. A method for forming a subterranean fluid permeation control layer in an area of ground for controlling fluid passage therethrough, comprising the steps of:
- (a) forming a first portion of a trench of a predetermined depth from the surface of the ground;
(b) widening said trench along one side thereof to form a widened portion;
(c) applying a fluid permeation control layer substantially along the bottom surface of said first portion of said trench;
(d) only partly covering said layer with earth removed from a widened portion of said trench such that at least the edge of said layer adjacent said one side of the trench remains uncovered; and
(e) selectively repeating steps (b), (c) and (d) until the entire area of the ground is lined by the permeation control layer, wherein, in repeating step (c) a newly applied layer is applied along the bottom surface of an adjacent, previously widened portion of the trench, partly contacting and overlapping an adjoining applied layer.
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Abstract
There is provided a method for forming a subterranean fluid permeation control layer in an area of ground. The method comprises the steps of forming a first portion of a trench of a predetermined depth from the surface of the ground and sequentially widening the trench along one side of the previously formed trench while selectively, simultaneously applying a fluid permeation layer substantially along the bottom surface of the previously formed trench and while at least partly covering the layer with earth removed from the widened portion of the trench being formed until the entire area of the ground is covered. The invention also provides a device for carrying out this method.
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Citations
16 Claims
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1. A method for forming a subterranean fluid permeation control layer in an area of ground for controlling fluid passage therethrough, comprising the steps of:
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(a) forming a first portion of a trench of a predetermined depth from the surface of the ground; (b) widening said trench along one side thereof to form a widened portion; (c) applying a fluid permeation control layer substantially along the bottom surface of said first portion of said trench; (d) only partly covering said layer with earth removed from a widened portion of said trench such that at least the edge of said layer adjacent said one side of the trench remains uncovered; and (e) selectively repeating steps (b), (c) and (d) until the entire area of the ground is lined by the permeation control layer, wherein, in repeating step (c) a newly applied layer is applied along the bottom surface of an adjacent, previously widened portion of the trench, partly contacting and overlapping an adjoining applied layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for forming a subterranean fluid permeation control layer in an area of ground for controlling fluid passage therethrough, comprising:
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a chassis having a front and a rear end; earth digging means mounted on said chassis and associated with means for removing the dug-out earth from the ground to form a trench; powered conveying means mounted on said chassis for conveying said dug-out earth to a location laterally displaced from said earth digging means; and an applicator mounted on said chassis and arranged to apply a fluid permeation control layer substantially along the bottom surface of an initially formed or widened trench, laterally displaced from said earth digging means; said conveying means being constructed and arranged such that the dug-out earth from an adjacent trench covers only a part of said layer leaving an edge thereof uncovered. - View Dependent Claims (9, 10, 11, 14, 15, 16)
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12. A device for forming a subterranean fluid permeation control layer in a area of ground for controlling fluid passage therethrough, comprising:
- a chassis having a front and a rear end;
earth digging means mounted on said chassis and associated with means for removing the dug-out earth from the ground to form a trench;
conveying means mounted on said chassis for conveying said dug-out earth to a location laterally displaced from said earth digging means; and
an applicator mounted on said chassis and arranged to apply a fluid permeation control layer substantially along the bottom surface of an initially formed or widened trench, laterally displaced from said earth digging means;
said conveying means being constructed and arranged such that the dug-out earth from an adjacent trench covers only a part of said layer leaving an edge thereof uncovered; and
wherein said means for conveying said dug-out earth is an endless belt conveyor mounted across said chassis. - View Dependent Claims (13)
- a chassis having a front and a rear end;
Specification