Method and apparatus for consolidating earth strata
First Claim
1. A method for consolidating an earth stratum situated in a subgrade by withdrawing water from the subgrade comprising the steps of:
- a) making a trench;
b) placing a plurality of generally vertically positioned drains in the earth stratum and that extend below the trench;
c) connecting the generally vertically positioned drains drainage-strips with a generally horizontally extended drainage-means-drain to provide water transfer between them;
d) forming an air sealing layer directly over the generally horizontal drain to close the surface of the soil;
e) connecting the generally horizontal drain to a pump; and
f) discharging fluid from the generally horizontal drain drainage-means using the pump.
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Accused Products
Abstract
A method for consolidating an earth stratum situated in a subgrade by withdrawing water that is present in there from it. The method comprises the steps of placing from the surface of the soil and at some depth, vertical drainage strips in the earth stratum and placing horizontal drainage pipes in the upper area of the earth stratum. The vertical drainage strips and drainage pipe are connected for water transfer between them. An air sealing layer is positioned directly over the horizontal drainage pipes. The surface of the soil is closed. The horizontal drainage pipes can be connected to a pump for discharge of the collected water.
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Citations
50 Claims
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1. A method for consolidating an earth stratum situated in a subgrade by withdrawing water from the subgrade comprising the steps of:
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a) making a trench;
b) placing a plurality of generally vertically positioned drains in the earth stratum and that extend below the trench;
c) connecting the generally vertically positioned drains drainage-strips with a generally horizontally extended drainage-means-drain to provide water transfer between them;
d) forming an air sealing layer directly over the generally horizontal drain to close the surface of the soil;
e) connecting the generally horizontal drain to a pump; and
f) discharging fluid from the generally horizontal drain drainage-means using the pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A soil consolidation apparatus for consolidating a selected earth stratum, comprising:
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a) a movable carriage;
b) a trench excavator on the carriage for enabling a trench to be formed that extends from the ground surface down to at least the upper side of the earth stratum to be consolidated;
c) a strip supply on the carriage that supplies a plurality of generally vertical drains;
d) a moving member on the carriage that enables driving each said drain into the earth stratum;
e) a second supply on the movable carriage that supplies horizontal drainage in the trench bottom so that it is in fluid communication with the vertical drainage strips. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for consolidating an earth stratum situated in a subgrade by withdrawing water from the subgrade, comprising the steps of:
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a) forming a trench having a trench bottom portion;
b) extending a plurality of first drains from the trench downwardly in the earth stratum;
c) connecting the first drains with a generally horizontal, second drain that is placed in the trench;
d) establishing water transfer between the first drains and the second drain;
e) arranging an air sealing layer directly over the generally horizontal, second drain to close the surface of the soil;
f) withdrawing water from the horizontal drain with a pump. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A soil consolidation apparatus for consolidating a selected earth stratum comprising:
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a) an earth working device provided with a propulsion system for moving the device over a ground surface;
b) the device having an excavator device that enables a trench to be formed from the ground surface down to at least the upper side of the selected earth stratum to be consolidated;
c) the device having a supply of drainage ribbons d) a lance on the earth working device for driving each ribbon into the selected earth stratum; and
e) a horizontal drain supply on the device that enables a horizontal drain to be installed in the trench bottom and in fluid communication with drainage ribbons. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification