Construction of a fluid impermeable subterranean barrier wall

摘要: A process is provided for constructing a fluid impermeable subterranean barrier wall in permeable earthen material at an surface. The initiated by excavating pit the material. gelable slurry prepared including unconsolidated solids, aqueous solvent, crosslinkable polymer, and polymer crosslinking agent. solids have bulk component consisting of soil or clay. can also include number additive agents which enhance performance slurry, such as density control agents, mixing permeability reduction filtration strength loss agents. placed gelled to substantial maturity. resulting gel binds present convert continuum consolidated forms pit. In alternate embodiment, displaceable formed from liquid ahead gelation solution. solution subsequently displace least portion slurry. gels maturity pit, binding forming wall.