Versatile grout bag type of underground support
OwnerNils Mittet Skarboviginventor
Life of this patent
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Abstract
A support assembly (1) is provided for the roof or hanging wall (36, 114) of an underground mine. The assembly comprises at least one support elongate (30) and a grout bag (2, 60, 80, 90, 102, 108, 120) used in association therewith and wherein the grout bag is inflated with settable granular material or grout (42). The support elongate is substantially surrounded, in plan view, by the grout bag and set granular material or grout contained therein. Preferably at least one cross-member (28) extends generally diametrically across the top of the support assembly and is anchored to the roof or hanging wall by the support elongate. The grout bag is preferably suspended from the end regions of the cross-member. Various grout bags for inclusion in such a support assembly are also provided.
Claims11
A support assembly for the roof or hanging wall of an underground mine comprising at least one support elongate and a grout bag used in association therewith and wherein the grout bag is inflated with settable granular material or grout
- wherein the support elongate extends through a passage formed through the grout bag from bottom to top and is substantially surrounded, in plan view, by the grout bag and set granular material or grout contained therein.
A support assembly for the roof or hanging wall of an underground mine comprising at least one support elongate and a plurality of separate grout bags used in association therewith and wherein the grout bags are inflated with settable granular material or grout
- wherein the separate grout bags extend from bottom to top and are arranged to form a substantially continuous mass of settable granular material or grout about the support elongate to substantially enclose it.
A grout bag having a top, a bottom and at least one side and having, in an expanded condition, an axis extending between the top and bottom thereof,
- wherein the grout bag is shaped to provide, in the inflated condition, a passage configured to be capable of accommodating at least a part of the outer surface of a support elongate extending in the same general direction as the said axis between the top and bottom of the grout bag.
A grout bag of generally sector shape in cross-section so that the grout bag may be used together with cooperating grout bags to operatively define a generally cylindrical grout bag assembly.
Dependencies are inferred from the claim text.