초록 ▼

An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground, a shield means for m

An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground, a shield means for maintaining the void, and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment.

대표청구항 ▼

[ We claim:] [1.] An apparatus for constructing an underground barrier comprising:a support structure;advancing means attached to the support structure for advancing said support structure along a surface;excavating means attached to the support structure for excavating earthen material and simultan

[ We claim:] [1.] An apparatus for constructing an underground barrier comprising:a support structure;advancing means attached to the support structure for advancing said support structure along a surface;excavating means attached to the support structure for excavating earthen material and simultaneously forming first and second underground side trenches defined by opposing earthen sidewalls as the support structure is advanced along the surface by the advancing means;barrier-forming means attached to the support structure for forming first and second side barriers within the first and second underground side trenches; andshield means attached to the support structure for (i) moving along at least one of the earthen sidewalls of one of the underground trenches as the support structure advances along the surface and (ii) providing lateral support to said earthen sidewall.