Methods are provided of inhibiting subterranean groundwater flow through a window in frozen soil including (i) introducing at least one conductor having at least one discharge aperture in proximity to the window; and (ii) discharging a grout material including C-18 alpha olefin or a combination of C-16 alpha olefin and C-18 alpha olefin in a flowable state from the at least one conductor, wherein the grout material, upon being discharged, permeates into surrounding soil materials generally without displacement thereof and wherein the grout forms a barrier to inhibit subterranean groundwater flow through the window.

Methods are provided of inhibiting subterranean groundwater flow through a window in frozen soil including (i) introducing at least one conductor having at least one discharge aperture in proximity to the window; and (ii) discharging a grout material including C-18 alpha olefin or a combination of C-16 alpha olefin and C-18 alpha olefin in a flowable state from the at least one conductor, wherein the grout material, upon being discharged, permeates into surrounding soil materials generally without displacement thereof and wherein the grout forms a barrier to inhibit subterranean groundwater flow through the window.

Methods including providing a hydrajetting tool comprising a housing having a top end and a bottom end and having a plurality of jetting nozzles disposed thereon, the top end of the housing fluidly coupled to a tool string; providing at least one sub-soil-surface cavity adjacent to or in unstable soil, the unstable soil having a plurality of channels therein; introducing the hydrajetting tool into the at least one sub-soil-surface cavity; injecting a cement slurry through at least one of the jetting nozzles and into the sub-soil-surface cavity; permeating the cement slurry into the plurality of channels in the unstable soil; filling the at least one sub-soil-surface cavity with the cement slurry; and curing the cement slurry, thereby forming a stable soil and a cement pillar in the at least one sub-soil-surface cavity.

Methods including providing a hydrajetting tool comprising a housing having a top end and a bottom end and having a plurality of jetting nozzles disposed thereon, the top end of the housing fluidly coupled to a tool string; providing at least one sub-soil-surface cavity adjacent to or in unstable soil, the unstable soil having a plurality of channels therein; introducing the hydrajetting tool into the at least one sub-soil-surface cavity; injecting a cement slurry through at least one of the jetting nozzles and into the sub-soil-surface cavity; permeating the cement slurry into the plurality of channels in the unstable soil; filling the at least one sub-soil-surface cavity with the cement slurry; and curing the cement slurry, thereby forming a stable soil and a cement pillar in the at least one sub-soil-surface cavity.

An underground water barrier installation system is provided herein, that contains a plowing apparatus having an enclosed chamber and a frame located above it. The system either has a roll of film located in the enclosed chamber beneath the ground, or alternatively, the frame contains a roll of biodegradable film and two rollers containing line above the ground. In the system having the roll of film located above the ground, the lines from the rollers are heat affixed to the edges of the film by two heated roller binding mechanisms. The system then also includes a cylindrical duct system which can efficiently move the film having the lined edges therethrough and into the internal chamber of the plowing apparatus, wherein the film having the lined edges is straightened by passing the lined edges through two side straightening mechanisms and then is fed through a slit in the back of the plowing apparatus. There are also provided methods herein which comprises providing the water barrier installation system, feeding the film, and if present, lines for the edging through the system; attaching the frame of the system to a towing vehicle and pulling the plowing apparatus at a depth through the ground such that the line edged film is dispensed at the depth in the ground behind the plowing apparatus as it is pulled through the ground.

An underground water barrier installation system is provided herein, that contains a plowing apparatus having an enclosed chamber and a frame located above it. The system either has a roll of film located in the enclosed chamber beneath the ground, or alternatively, the frame contains a roll of biodegradable film and two rollers containing line above the ground. In the system having the roll of film located above the ground, the lines from the rollers are heat affixed to the edges of the film by two heated roller binding mechanisms. The system then also includes a cylindrical duct system which can efficiently move the film having the lined edges therethrough and into the internal chamber of the plowing apparatus, wherein the film having the lined edges is straightened by passing the lined edges through two side straightening mechanisms and then is fed through a slit in the back of the plowing apparatus. There are also provided methods herein which comprises providing the water barrier installation system, feeding the film, and if present, lines for the edging through the system; attaching the frame of the system to a towing vehicle and pulling the plowing apparatus at a depth through the ground such that the line edged film is dispensed at the depth in the ground behind the plowing apparatus as it is pulled through the ground.