US2018016765A1PendingUtilityA1

Method of lifting a structure on the earth

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Assignee: BALDWIN JOHNPriority: Jul 14, 2016Filed: Jul 14, 2016Published: Jan 18, 2018
Est. expiryJul 14, 2036(~10 yrs left)· nominal 20-yr term from priority
Inventors:John R. Baldwin
E02D 27/10E02D 27/48E02D 2300/002E02D 2250/003E02D 3/12E02D 37/00
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Claims

Abstract

A method of lifting a structure includes extending a pipe so as to have one end opening to a lens in the earth, connecting a pump to the pipe, and pumping a grout material through the pipe and into the lens so as to cause a strata of the earth above the lens to heave upwardly and to cause the structure to move upwardly. The grout is solidified in the lens. The pipe is removed after the step of pumping. The grout is a low mobility cement grout. A location of the lens nearest to the structure is determined prior to the step of extending the pipe.

Claims

exact text as granted — not AI-modified
I claim: 
     
         1 . A method of lifting a structure, the method comprising:
 extending the pipe so as to have one end opening to a lens in the earth;   connecting a pump to said pipe; and   pumping a grout material through said pipe and into said lens so as to cause a strata of the earth above the lens to heave upwardly and to cause the structure to move upwardly.   
     
     
         2 . The method of  claim 1 , further comprising:
 solidifying the grout material in the lens.   
     
     
         3 . The method of  claim 1 , further comprising:
 removing said pipe after the step of pumping.   
     
     
         4 . The method of  claim 1 , said grout material being a particulate grout or a solution grout. 
     
     
         5 . The method of  claim 1 , said grout material being a low mobility cement grout. 
     
     
         6 . The method of  claim 1 , further comprising:
 disconnecting a utility from the structure prior to the step of pumping.   
     
     
         7 . The method of  claim 1 , further comprising:
 determining a location of the lens in the earth nearest to the structure.   
     
     
         8 . The method of  claim 7 , the lens being a sand/silt lens having a clay formation overlying the lens and a clay or rock formation underlying the lens. 
     
     
         9 . The method of  claim 1 , the step of pumping comprising:
 pumping the grout material at a pressure of between 50 and 150 p.s.i.   
     
     
         10 . The method of  claim 1 , said pipe being a casing pipe or a drill stem. 
     
     
         11 . The method of  claim 1 , the step of extending comprising:
 extending said pipe generally vertically through the earth to the lens.   
     
     
         12 . The method of  claim 1 , the step of extending comprising:
 extending a plurality of pipes through the earth in spaced relation to each other, the step of pumping comprising pumping the grout material through said plurality of pipes to the lens.   
     
     
         13 . A method of lifting a structure that resides on the surface of the earth, the method comprising:
 determining a location of a lens in the earth;   extending a pipe through the earth so as to have a lower end opening to the lens; and   pumping a grout material through said pipe and into the lens so as to cause a strata of the earth above the lens to heave upwardly so as to cause the structure to move upwardly.   
     
     
         14 . The method of  claim 13 , further comprising:
 connecting a pump to the pipe so as to pump the grout material under pressure into the pipe.   
     
     
         15 . The method of  claim 13 , further comprising:
 solidifying the grout material in the lens.   
     
     
         16 . The method of  claim 13 , further comprising:
 removing said pipe after the step of pumping.   
     
     
         17 . The method of  claim 13 , said grout material being a low mobility cement grout. 
     
     
         18 . The method of  claim 13 , the lens being a sand/silt lens having a clay formation overlying the lens in a clay or rock formation underlying the lens. 
     
     
         19 . The method of  claim 13 , the step of pumping comprising:
 pumping the grout material at a pressure of between 50 and 150 p.s.i.   
     
     
         20 . The method of  claim 13 , the step of extending comprising:
 extending a plurality of pipes through the earth in spaced relation to each other, the step of pumping comprising pumping the grout material through said plurality of pipes to the lens.

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