WO2009010863A2 - Mine support grout bags and packs - Google Patents
Mine support grout bags and packs Download PDFInfo
- Publication number
- WO2009010863A2 WO2009010863A2 PCT/IB2008/001868 IB2008001868W WO2009010863A2 WO 2009010863 A2 WO2009010863 A2 WO 2009010863A2 IB 2008001868 W IB2008001868 W IB 2008001868W WO 2009010863 A2 WO2009010863 A2 WO 2009010863A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grout
- grout bag
- bag
- section
- textile material
- Prior art date
Links
- 239000011440 grout Substances 0.000 title claims abstract description 110
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 239000008187 granular material Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 18
- 239000004753 textile Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 abstract description 3
- 239000004746 geotextile Substances 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/48—Chocks or the like
- E21D15/483—Chocks or the like made of flexible containers, e.g. inflatable, with or without reinforcement, e.g. filled with water, backfilling material or the like
Definitions
- This invention relates to mine support grout bags and packs that, in use, are filled with a cementitious or other settable mix, typically, but not necessarily, including pulverised ore or backfill of processed or barren mined material.
- grout bag as used herein is intended to mean a generally permeable bag that is used to contain slurry pumped into it under pressure and to retain the solids whilst allowing excess moisture to permeate through the grout bag that is typically made of a suitable textile material such as a geotextile material.
- grout pack as used herein is intended to mean a grout bag that is used in combination with reinforcing surrounding the generally upright walls of the grout bag, the reinforcing being either or both of a reinforcing mesh and a series of peripheral rings typically of metal, encircling the grout bag.
- stope support can utilise a vast range of materials, configurations and systems, including, gum poles, timber and composite packs, steel props, unmined ore pillars, rock anchors and granular (tailings) type supports.
- cemented grout bags and grout packs are increasingly being utilized as combination support products, consisting essentially of a support column formed by cured cemented backfill or a similar cured cementitious grout, contained within a geotextile bag and, in the instance of a grout pack, stiffened against lateral deformation under axial load with external mesh or restraining rings, or both.
- Conventional grout bags are prismatic in shape and are made as closed geotextile containers with a non-return valve for filling the bags.
- the bags also have some means of suspending them, together with any external restraining rings, on support elongates within the stopes by means of ties or loops prior to the filling operation.
- any support utilised for the purpose indicated above needs to be capable of collapse as the forces between the hanging wall and footwall increase in order to avoid rock-bursts that tend to be catastrophic.
- One difficulty that applicant believes is experienced with conventional grout bags and grout packs is that they tend to lend themselves towards rather sudden collapse under certain circumstances. This may be consequent on an inclined shear plane developing across the grout bag or grout pack which in turn apparently results, at least to some extent, from the constant cross- sectional size thereof.
- a grout bag having flexible side walls, a top, and a bottom defining a cavity for receiving settable granular material or grout and an inlet for slurry to be introduced into the interior of the grout bag and wherein the flexible side walls are adapted to retain solids within the grout bag and the grout bag has an axis in the general direction of which a filled and set grout bag is adapted to collapse, the grout bag being characterised in that, in an open but unfilled condition, the cavity has at least two different cross-sectional sizes.
- the grout bag in the open but unfilled condition, to include a section of sidewall of generally truncated conical shape with the axis of such section being generally coincident with the grout bag axis; for the grout bag to be made of a textile material, in particular, a geotextile material that may be stitched together from panels or made from a tubular textile material having end panels of the required cross- sectional shape secured thereto and a tuck in the tubular textile material forming a section of smaller diameter than the full diameter of the tubular textile material in which instance a tapering tuck may be used to form a generally truncated conical section of sidewall; or, in the alternative or in addition to a truncated conical shaped section, for a tapering insert to be provided at either or both top and bottom ends of the grout bag to form a section of varying cross-sectional size; and for the inlet to have a nonreturn inlet valve.
- a textile material in particular, a geotextile material that may
- a grout pack including a grout bag as defined above together with either or both of an external peripheral supporting mesh conforming substantially to the outer shape of the grout bag in the open and unfilled condition and a series of operatively axially spaced support rings.
- Figure 1 is a schematic side elevation of one embodiment of grout bag according to the invention in an operative position between a hanging wall and a footwall;
- Figure 2 is a schematic three-dimensional view thereof
- Figures 3, 4, 5, 6 and 7 are each a schematic side elevation of a second, third, fourth, fifth and sixth embodiment of grout bag according to the invention.
- Figure 8 is an exploded schematic three-dimensional view of a seventh embodiment of grout bag according to the invention.
- Figure 9 is a similar view of an eighth embodiment of grout bag according to the invention.
- Figure 10 is a schematic three-dimensional view of a first embodiment of grout pack according to the invention.
- Figure 11 is a sectional elevation thereof in the operative condition
- Figure 12 is a plan view thereof showing the different diameter of reinforcing rings; and, Figures 13, 14, 15, 16 and 17 are each a schematic three- dimensional view of second, third, fourth, fifth and sixth embodiments of grout pack according to the invention.
- a grout bag (1 ) has flexible side walls (2), a top (3), and a bottom (4) defining a cavity for receiving settable granular material or grout indicated by numeral (5) in Figure 1.
- a nonreturn inlet valve (6) is provided for the introduction of granular material or grout in the form of a slurry to be introduced into the cavity of the grout bag, in the usual way.
- the grout bag may be manufactured from a series of panels stitched together or it may be made from a tubular textile material having end panels secured thereto of the required shape defining the top and bottom with a tuck (7) in the tubular textile material forming a section of smaller diameter than the full diameter of the tubular textile material.
- the fabric from which the grout bag is manufactured may be any suitable fabric and, in particular, a geotextile is considered to be particularly suitable, at least for the flexible side walls that are adapted to retain solids within the grout bag and allow water to permeate through it as may be required.
- a tapering tuck (7a) is used to form a squat generally truncated conical section (8) of the sidewall intermediate its ends.
- This truncated conical section forms a connecting section between a larger diameter right circular cylindrical section (9) and a smaller diameter right circular cylindrical section (10) formed by the tuck (7).
- each section are substantially coincident with each other and with the grout bag axis (11 ) being the axis in which a filled and set grout bag is adapted to collapse.
- the cavity defined by the walls thus has at least two generally coaxial sections of different cross- sectional sizes interconnected by the truncated conical section.
- the shape of the grout bag described above applies to its shape in an open but unfilled condition, that is to say, in a condition in which it is not distorted by the weight of any slurry or grout material introduced into it as may well happen in the instance of a grout bag that is unsupported externally.
- the smaller diameter section will tend to collapse first and, because of this, there is a substantially reduced risk of the entire grout bag failing along an inclined plane passing through the entire transverse dimension of the grout bag.
- the bag could have an outwardly flared truncated conical section (12) at an end of a right circular cylindrical section (13), as shown in Figure 3.
- it may have an inwardly tapered truncated conical section (14) at an end of a right circular cylindrical section (15), as shown in Figure 4.
- the grout bag may consist exclusively of two oppositely tapering truncated conical sections (16) whereof the larger diameter is located in the centre of the height of the bag, as illustrated in Figure 5.
- a pair of oppositely tapering truncated conical sections (17) may be arranged with the smaller diameter ends in the centre of the height of the grout bag and the larger diameter ends at the extremities of the height, as illustrated in Figure 6.
- the grout bag (18) may have a simple truncated conical shape over its entire height, as illustrated in Figure 7.
- the grout bag (19) may have a right circular cylindrical outer shape with the tapering cross-sectional shape being created by a conical insert (20) arranged coaxially with the cylindrical outer shape.
- a conical insert (21 ) could be used with any other outer shape of grout bag and Figure 9 illustrates a grout bag of the shape illustrated in Figure 7 fitted with such a conical insert.
- a grout pack may be formed utilising a grout bag as described above together with either or both of an external peripheral supporting mesh conforming generally to the outer shape of the grout bag in the open and unfilled condition and a series of operatively axially spaced support rings.
- a mesh (22) and axially spaced support rings (23) may be arranged to encircle a grout bag (24) of the shape described with reference to Figures 1 and 2. It will be understood that the different sized support rings can fit one within the other in the totally collapsed condition of a grout pack prior to installation thereof and for purposes of transport and storage. Figure 12 illustrates this feature.
- Figure 13 illustrates a grout pack including a grout bag of the shape illustrated in Figure 7
- Figure 14 illustrates a grout pack including a grout bag of the shape illustrated in Figure 3 (the larger diameter support ring (25) being particularly useful for suspending the grout pack preparatory to filling thereof)
- Figure 15 illustrates a grout pack including a grout bag of the shape illustrated in Figure 4
- Figure 16 illustrates a grout pack including a grout bag of the nature illustrated in Figure 8
- Figure 17 illustrates a grout pack including a grout bag of the nature illustrated in Figure 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Revetment (AREA)
- Lining And Supports For Tunnels (AREA)
- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Fertilizing (AREA)
- Bag Frames (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/668,545 US20100209023A1 (en) | 2007-07-17 | 2008-07-17 | Mine support grout bags and packs |
AU2008277339A AU2008277339A1 (en) | 2007-07-17 | 2008-07-17 | Mine support grout bags and packs |
CA002687873A CA2687873A1 (en) | 2007-07-17 | 2008-07-17 | Mine support grout bags and packs |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2007/05920 | 2007-07-17 | ||
ZA200705920 | 2007-07-17 | ||
ZA200705919 | 2007-07-17 | ||
ZA2007/05919 | 2007-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009010863A2 true WO2009010863A2 (en) | 2009-01-22 |
WO2009010863A3 WO2009010863A3 (en) | 2009-03-26 |
Family
ID=40254387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2008/001868 WO2009010863A2 (en) | 2007-07-17 | 2008-07-17 | Mine support grout bags and packs |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100209023A1 (en) |
AU (1) | AU2008277339A1 (en) |
CA (1) | CA2687873A1 (en) |
WO (1) | WO2009010863A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8246276B2 (en) * | 2010-07-09 | 2012-08-21 | Abc Industries, Inc. | Pumpable crib bag assembly and method of installation |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11702935B2 (en) | 2020-09-18 | 2023-07-18 | Fci Holdings Delaware, Inc. | Pumpable crib bag |
CN116857001A (en) * | 2023-07-27 | 2023-10-10 | 山西文龙中美环能科技股份有限公司 | Paste filling gob-side entry retaining construction method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4402358A1 (en) * | 1994-01-27 | 1995-08-03 | Quante Heinrich Berg Ing | Stacking pot pillar for mining supports |
WO1999009299A1 (en) * | 1997-08-18 | 1999-02-25 | Fosroc International Limited | Pillar bag support |
DE20208520U1 (en) * | 2002-05-31 | 2002-12-19 | Gebhardt & Koenig Berg Und Bau | Extension support for mining and tunneling |
WO2003085234A1 (en) * | 2002-04-10 | 2003-10-16 | Neil Christopher Hellmann | Inflatable mine support pack |
DE202006014091U1 (en) * | 2006-09-11 | 2006-11-30 | Dr. Klaus Schulte Gmbh Chemisch Technische Fabrikation | Pit prop for in situ casting has a water porous sheath with filling valve and with separate fitting valve for top of prop |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1431229A1 (en) * | 1964-12-12 | 1969-06-19 | Dynamit Nobel Ag | Disposal container for fuel |
US4011728A (en) * | 1975-01-17 | 1977-03-15 | Turzillo Lee A | Means for producing subaqueous and other cast-in-place concrete structures in situ |
US4277204A (en) * | 1979-09-13 | 1981-07-07 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Excavation roof support and method of installing the same |
GB2091314B (en) * | 1980-12-30 | 1984-05-02 | Elliot Gordon | Packing means for underground passageways |
US4983077A (en) * | 1987-08-26 | 1991-01-08 | Gebhardt & Koenig-Gesteins- Und Tiefbau Gmbh | Method and an apparatus for producing fabric-reinforced lining supports or slender supporting structural units |
US5090597A (en) * | 1990-07-26 | 1992-02-25 | Westco Plastics, Inc. | Masonry grout bag |
CA2144612A1 (en) * | 1994-03-17 | 1995-09-18 | Hl & H Timber Products (Pty) Ltd. | High pressure bag |
ZA956762B (en) * | 1995-08-14 | 1996-03-20 | Lin Fen Fen | Mine support bag |
US5823718A (en) * | 1996-07-25 | 1998-10-20 | Alnet (Proprietary) Limited | Pillar bag |
US6394707B1 (en) * | 1997-05-08 | 2002-05-28 | Jack Kennedy Metal Products & Buildings, Inc. | Yieldable mine roof support |
WO2000014384A1 (en) * | 1998-09-03 | 2000-03-16 | Alethea Rosalind Melanie Hall | Mine support |
DE10114344C1 (en) * | 2001-03-23 | 2002-07-25 | Volker Merz | Support element, for an underground mine, comprises a T-shaped central column consisting of a hydraulically curable and inflatable material surrounded by a sleeve made of stacked non-flammable empty car tires |
US7252123B1 (en) * | 2004-07-09 | 2007-08-07 | Hawkins Ricky W | Method, apparatus and system for filling and using bags for grout and similar materials |
US7654777B2 (en) * | 2006-03-28 | 2010-02-02 | Norsenet (Pty) Limited | Grout pack restraining system |
ZA200800631B (en) * | 2007-01-18 | 2009-02-25 | Skarboevig Nils Mittet | A grout bag type of underground support |
ZA200808312B (en) * | 2007-10-24 | 2009-11-25 | Nils Mittet Skarboevig | Mine support grout bags and grout packs |
-
2008
- 2008-07-17 WO PCT/IB2008/001868 patent/WO2009010863A2/en active Application Filing
- 2008-07-17 US US12/668,545 patent/US20100209023A1/en not_active Abandoned
- 2008-07-17 AU AU2008277339A patent/AU2008277339A1/en not_active Abandoned
- 2008-07-17 CA CA002687873A patent/CA2687873A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4402358A1 (en) * | 1994-01-27 | 1995-08-03 | Quante Heinrich Berg Ing | Stacking pot pillar for mining supports |
WO1999009299A1 (en) * | 1997-08-18 | 1999-02-25 | Fosroc International Limited | Pillar bag support |
WO2003085234A1 (en) * | 2002-04-10 | 2003-10-16 | Neil Christopher Hellmann | Inflatable mine support pack |
DE20208520U1 (en) * | 2002-05-31 | 2002-12-19 | Gebhardt & Koenig Berg Und Bau | Extension support for mining and tunneling |
DE202006014091U1 (en) * | 2006-09-11 | 2006-11-30 | Dr. Klaus Schulte Gmbh Chemisch Technische Fabrikation | Pit prop for in situ casting has a water porous sheath with filling valve and with separate fitting valve for top of prop |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8246276B2 (en) * | 2010-07-09 | 2012-08-21 | Abc Industries, Inc. | Pumpable crib bag assembly and method of installation |
Also Published As
Publication number | Publication date |
---|---|
CA2687873A1 (en) | 2009-01-22 |
AU2008277339A1 (en) | 2009-01-22 |
WO2009010863A3 (en) | 2009-03-26 |
US20100209023A1 (en) | 2010-08-19 |
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