Pumpable mine seal
OwnerDavid A. Hussey, William R. Semethy, Jr.inventors
Life of this patent
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Abstract
A pumpable mine assembly is provided having a pair of steel support structures forming the front and back surface of the seal. The support structures can be formed by either a row of vertically-disposed steel beams or a cable lattice secured by anchor bolts to the top and bottom surface of the mine entry. A separate wire mesh backing is provided on the inside of each of the pair of support structures. A seal bag placed within the wire mesh backing receives filling material, generally in the form of concrete. The filled seal bag forms a tight seal on the top, bottom and ribs of a mine entry or passageway.
Claims13
A pumpable mine seal comprising:
- a. a pair of generally parallel spaced apart support structures provided in one of a mine entry and passageway, said support structures being anchored to opposing surfaces of said one of a mine entry and passageway;
- b. screen means provided adjacent to each of said pair of support structures within the space between said pair of support structures;
- c. container means placed within the space between said screen means;
- and
- d. filling material provided in said container means.
A method for forming a pumpable mine seal in a mine entry comprising the steps of:
- a. providing a front and back set of spaced apart top and bottom rows of anchor bores provided in the surface of said mine entry, said rows provided generally transverse to said mine entry;
- b. installing anchor bolts in each of said anchor bores;
- c. attaching hanger plates to each said anchor bolt to form a front and back set of spaced apart top and bottom rows of hanger plates;
- d. securing a pair of steel cables to alternating top and bottom hanger plates on said back set of hanger plates to form a first diamond shaped lattice frame;
- e. providing a first wire mesh screen on the front side of said first lattice frame;
- f. positioning container means adjacent said wire mesh screen on the front side thereof;
- g. providing a second wire mesh screen adjacent said container means on the front side thereof;
- h. forming a second cable lattice frame on said front set of hanger plates;
- and
- i. filling said container means with cementitious material.
A method for forming a pumpable mine seal in a mine entry comprising the steps of:
- a. securing a first and second pair of generally parallel spaced apart angles to the roof and floor of said mine entry;
- b. securing a plurality of vertically-disposed beams to said first pair of angles, said beams and angles forming a support structure, said support structure having an inby surface adjacent a side wall of said mine entry and an outby surface provided opposite said inby surface;
- c. providing a first screen on said outby surface of said support structure;
- d. positioning container means adjacent said screen on the outby side thereof;
- e. providing a second screen adjacent said container means on the outby side thereof;
- f. securing a plurality of vertically-disposed beams to said second pair of angles on the outby side of said second screen;
- and
- g. filling said container means with cementitious material.
Dependencies are inferred from the claim text.