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US 2010/0135731 A1Published application
Method and device for measuring underground pressure
AssigneeUretek USA, Inc.
InventorsBrent Barron, Michael Bock
Life of this patent
Estimating the term…
Abstract
The present invention relates to in-place soil stabilization. Specifically, the present invention relates a method and device for measuring the increase in subsurface earth pressure during the injection of a stabilizing agent into the soil. The rise in sensor pressure indicates an increase in soil strength and bearing capacity. Therefore, real-time monitoring of these pressures may serve as a guide during the injection process.
Claims20
A method for stabilizing soil comprising the steps of:
- drilling a plurality of holes spaced from each other in the soil to be stabilized, wherein the plurality of holes are spaced in such a way as to create a geometrical shape having an even number of vertices and one hole that is located in the geometrical center of the shape formed by the plurality of holes;
- placing tubes in the plurality of holes;
- placing a pressure monitoring assembly in the center hole
- injecting into the soil, through the holes forming the vertices of the geometrical shape, a soil stabilization agent;
- monitoring the pressure of the soil as the soil stabilization agent is being injected.
2 more elements
A method for stabilizing soil comprising the steps of:
- (a) drilling a plurality of holes spaced from each other in the soil to be stabilized, wherein the plurality of holes are spaced in such a way as to create a geometrical shape having an even number of vertices and one hole is located in the geometrical center of the shape formed by the plurality of holes;
- (b) placing tubes in the plurality of holes;
- (c) placing a pressure monitoring assembly in the center hole, wherein the pressure assembly comprises a thermocouple
- (d) injecting into the soil, through the holes forming the vertices of the geometrical shape, a soil stabilization agent;
- (e) monitoring the pressure of the soil as the injectable material is being injected;
- and,
- (f) monitoring the temperature of the soil as the soil stabilization agent is being injected
- wherein an increase in temperature indicates that the injectable material has contacted the pressure sensor and the injection step must be stopped, after the pressure step has been stopped the pressure sensor must be relocated and steps (c), (d), (e) and (f) are repeated.
5 more elements
A system for stabilizing soil comprising
- a tube inserted into the soil, wherein the tube is equipped with a pressure monitoring assembly and an expandable polymer,
- wherein the pressure monitoring assembly further comprises a sensor bulb, thermocouple wire and flexible tubing lines and the pressure sensor assembly is positioned between the bottom of the tube and the soil, and
- wherein the polymer is injected through the tube and expands in the space between the soil and the bottom of the tube thereby causing the soils in the immediate area to become stabilized.
A system for stabilizing soil comprising
- a plurality of tubes inserted into the soil, wherein at least one tube is equipped with a pressure monitoring assembly;
- and,
- an expandable polymer,
- wherein the pressure monitoring assembly further comprises a sensor bulb, thermocouple wire and flexible tubing lines and the pressure monitoring assembly is positioned at various depths along the length of the tube and between the bottom of the tube and the soil, and
- wherein the polymer is injected through the plurality of tubes not containing a pressure monitoring assembly and expands in the space between the soil and the bottom of the tube thereby causing the soils in the immediate area to become stabilized.
2 more elements
Dependencies are inferred from the claim text.