CA2507344C - Explosive-activated ground anchor assembly - Google Patents
Explosive-activated ground anchor assembly Download PDFInfo
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- CA2507344C CA2507344C CA2507344A CA2507344A CA2507344C CA 2507344 C CA2507344 C CA 2507344C CA 2507344 A CA2507344 A CA 2507344A CA 2507344 A CA2507344 A CA 2507344A CA 2507344 C CA2507344 C CA 2507344C
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- members
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- 239000002360 explosive Substances 0.000 title claims abstract description 32
- 230000000694 effects Effects 0.000 claims abstract description 29
- 238000005474 detonation Methods 0.000 claims abstract description 12
- 230000014759 maintenance of location Effects 0.000 claims abstract description 11
- 230000000717 retained effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 239000011111 cardboard Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000123 paper Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 230000000452 restraining effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/803—Ground anchors with pivotable anchoring members
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object thereto, the assembly adapted to be received within a borehole within the ground, the assembly comprising an elongate anchor shaft having shaft abutment means on a portion thereof; a plurality of elongate ground-engageable members retained on and moveable along the shaft; each of the members having (i) a first terminal portion operably abutable with the shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent the shaft, whereby detonation of the effective explosive charge effects the movement of the ground-engageable members along the shaft and the abutment with the shaft abutment means as to effect frictional engagement and retention of the first terminal portions within the ground. The assembly also may be used to provide ground anchors within the walls, roof and floors of mine shafts and tunnels.
Description
EXPLOSIVE-ACTIVATED GROUND ANCHOR ASSEMBLY
FIELD OF THE INVENTION
This invention relates to a ground anchor, for use underground in mine shafts, tunnels and the like, or particularly, for tying down structures, such as towers, electricity pylons and the like with guy wires above ground.
BACKGROUND OF THE INVENTION
Utilities and other companies, which use guy towers, use various mechanical devices to anchor the guy wires that hold the towers vertically. Typical installations require than an anchor rod or shaft is held in the ground to provide a holding power sufficient to hold the tower upright under the designed conditions of wind, ice and tower vibrations.
Typical examples of such mechanical anchors known in the art include mufti-helix screws, expanding anchors, grouted anchors and wood mats.
Below ground or within mountains and the like, as in mine shafts, tunnels and the like, retained members such as rods, bolts, thick wire members and the like, may be retained in the walls, face, roof or floor of a tunnel within a concrete-filled borehole.
Although the aforesaid prior art is in established use, there is, however, a need for a ground anchor system that provides less disturbance of the ground adjacent the resultant borehole during installation and completion of the installed resultant ground anchor.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a ground anchor assembly which provides a resultant installed ground anchor that minimizes disruption of the annular sides of the borehole and maintains the integrity of the surrounding ground.
Accordingly, in one broad aspect the invention provides a ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object thereto, said assembly adapted to be received within a borehole within said ground, said assembly comprising an elongate anchor shaft having shaft abutment means on a portion thereof;
a plurality of elongate ground-engageable members retained on and moveable along said shaft; each of said members having (i) a first terminal portion operably abutable with said shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent said shaft, whereby detonation of said effective explosive charge effects said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means as to effect frictional engagement and retention of said first terminal portions within said ground.
The present invention provides an explosive-activated ground anchor assembly that uses the energy generated by a small charge of explosive located at the bottom of the bore hole below the anchor shaft or within a housing connected to as part of the shaft to propel a plurality of elongate ground-engageable members upwardly on the shaft, whereby the upper end portion of each member is so shaped that upon abutment with a suitably located abutment means, preferably a collar on the shaft, in consequence of the explosion, the upper end portions of the members "splay" outwardly from the shaft and penetrate into the borehole sides of the ground to effect frictional engagement and retention within the ground.
The practice of the invention is equally as practicable when the borehole is horizontal or at any other angle in the ground, with the appropriate charge in directional terminology commensurate with the direction.
In alternative embodiments, the explosive charge means comprises a housing formed of a material selected from a metal, fabric, paper, cardboard and a plastics material.
The housing may be an article separate and distinct from but adjacent the shaft or connected thereto, for example, by welds, or integrally-formed therewith.
Preferably, the shaft abutment means constitutes a collar of sufficient width and so located on the shaft as to provide effective operable abutment with the plurality of members to effect proper directional charge of the moving members into the borehole sides.
FIELD OF THE INVENTION
This invention relates to a ground anchor, for use underground in mine shafts, tunnels and the like, or particularly, for tying down structures, such as towers, electricity pylons and the like with guy wires above ground.
BACKGROUND OF THE INVENTION
Utilities and other companies, which use guy towers, use various mechanical devices to anchor the guy wires that hold the towers vertically. Typical installations require than an anchor rod or shaft is held in the ground to provide a holding power sufficient to hold the tower upright under the designed conditions of wind, ice and tower vibrations.
Typical examples of such mechanical anchors known in the art include mufti-helix screws, expanding anchors, grouted anchors and wood mats.
Below ground or within mountains and the like, as in mine shafts, tunnels and the like, retained members such as rods, bolts, thick wire members and the like, may be retained in the walls, face, roof or floor of a tunnel within a concrete-filled borehole.
Although the aforesaid prior art is in established use, there is, however, a need for a ground anchor system that provides less disturbance of the ground adjacent the resultant borehole during installation and completion of the installed resultant ground anchor.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a ground anchor assembly which provides a resultant installed ground anchor that minimizes disruption of the annular sides of the borehole and maintains the integrity of the surrounding ground.
Accordingly, in one broad aspect the invention provides a ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object thereto, said assembly adapted to be received within a borehole within said ground, said assembly comprising an elongate anchor shaft having shaft abutment means on a portion thereof;
a plurality of elongate ground-engageable members retained on and moveable along said shaft; each of said members having (i) a first terminal portion operably abutable with said shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent said shaft, whereby detonation of said effective explosive charge effects said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means as to effect frictional engagement and retention of said first terminal portions within said ground.
The present invention provides an explosive-activated ground anchor assembly that uses the energy generated by a small charge of explosive located at the bottom of the bore hole below the anchor shaft or within a housing connected to as part of the shaft to propel a plurality of elongate ground-engageable members upwardly on the shaft, whereby the upper end portion of each member is so shaped that upon abutment with a suitably located abutment means, preferably a collar on the shaft, in consequence of the explosion, the upper end portions of the members "splay" outwardly from the shaft and penetrate into the borehole sides of the ground to effect frictional engagement and retention within the ground.
The practice of the invention is equally as practicable when the borehole is horizontal or at any other angle in the ground, with the appropriate charge in directional terminology commensurate with the direction.
In alternative embodiments, the explosive charge means comprises a housing formed of a material selected from a metal, fabric, paper, cardboard and a plastics material.
The housing may be an article separate and distinct from but adjacent the shaft or connected thereto, for example, by welds, or integrally-formed therewith.
Preferably, the shaft abutment means constitutes a collar of sufficient width and so located on the shaft as to provide effective operable abutment with the plurality of members to effect proper directional charge of the moving members into the borehole sides.
2 The plurality of members are most preferably retained to and around the shaft by means of a metal ring which embraces and is operably moveable on the shaft.
The ring is adjacent the explosive charge whereby detonation thereof causes the upward movement of the ring and associated members along the shaft in a manner analogous to the opening of the retractable spokes of an upsidedown umbrella.
Thus, in a preferred aspect the invention provides a ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object connected thereto, said assembly adapted to be received within a borehole within said ground, and comprising (a) an anchor elongate shaft having a longitudinal axis and a proximal portion and a distal end;
(b) a housing adjacent said distal end of said shaft;
(c) a collar means adjacent said proximal portion of said shaft;
(d) an umbrella assembly between said housing and said collar means, said umbrella assembly comprising (i) a ring member located and operably moveable on said shaft adjacent said housing; and (ii) a plurality of elongate members essentially parallel to said longitudinal axis of said shaft, wherein each of said members has a distal end connected to said ring member, and a splayed proximal end portion so shaped relative to said collar means, such that in operation movement of said plurality of elongate members along said shaft effects sufficient abutment of said splayed proximal ends against said collar means as to effect frictional engagement of said proximal end portions of said members within said ground; and (e) an effective amount of explosive within said housing connectable to detonator means to effect detonation of said explosive to operably propel said umbrella means along said shaft to effect said sufficient abutment of said splayed proximal ends against said collar means.
Penetration of the members to a typical depth of 3-I Scm depending on the nature of the ground material and as determined by the skilled person has been found to be effective in achieving effective retention.
In a further aspect, the invention provides a system comprising an object restrained by an object anchor means to or within the ground comprising
The ring is adjacent the explosive charge whereby detonation thereof causes the upward movement of the ring and associated members along the shaft in a manner analogous to the opening of the retractable spokes of an upsidedown umbrella.
Thus, in a preferred aspect the invention provides a ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object connected thereto, said assembly adapted to be received within a borehole within said ground, and comprising (a) an anchor elongate shaft having a longitudinal axis and a proximal portion and a distal end;
(b) a housing adjacent said distal end of said shaft;
(c) a collar means adjacent said proximal portion of said shaft;
(d) an umbrella assembly between said housing and said collar means, said umbrella assembly comprising (i) a ring member located and operably moveable on said shaft adjacent said housing; and (ii) a plurality of elongate members essentially parallel to said longitudinal axis of said shaft, wherein each of said members has a distal end connected to said ring member, and a splayed proximal end portion so shaped relative to said collar means, such that in operation movement of said plurality of elongate members along said shaft effects sufficient abutment of said splayed proximal ends against said collar means as to effect frictional engagement of said proximal end portions of said members within said ground; and (e) an effective amount of explosive within said housing connectable to detonator means to effect detonation of said explosive to operably propel said umbrella means along said shaft to effect said sufficient abutment of said splayed proximal ends against said collar means.
Penetration of the members to a typical depth of 3-I Scm depending on the nature of the ground material and as determined by the skilled person has been found to be effective in achieving effective retention.
In a further aspect, the invention provides a system comprising an object restrained by an object anchor means to or within the ground comprising
3 said object;
an elongate anchor;
means for connecting said anchor to said object; and ground retaining means for retaining said anchor within said ground; the improvement comprising said anchor retaining means comprising a plurality of elongate ground-engaged members, wherein each member has a proximal portion retained to said anchor, and a distal portion in frictional engagement and retention within said ground.
In a further aspect, the invention provides a method of constructing a system comprising an object restrained to the ground with restraining anchor means comprising an elongate anchor disposed within said ground and attachment means attached to said anchor and said object;
said method comprising the steps of locating said anchor within a borehole in the ground and attaching said anchor to said object;
the improvement comprising (a) providing said anchor comprising an anchor elongate shaft;
a housing connected to said shaft and surrounding at least a part of said anchor shaft;
said housing with said part of said shaft defining a chamber; and an effective amount of an explosive within said chamber connectable to detonator means to effect detonation of said explosive to effect deformation of said housing as to provide frictional ground retention of said housing within said ground;
(b) providing said effective explosive charge means adjacent said shaft;
(c) detonating said explosive charge to effect said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means to effect frictional engagement and retention of said first terminal portions within said ground.
The anchor assembly as hereinabove defined my be used in above and below ground situations, e.g. for tying down structures, such as towers, buildings or the like, as well as in mine shafts, tunnels below ground or within mountains as providing shaft, rod or thick wire members retained in the walls, face, or roof of a tunnel.
an elongate anchor;
means for connecting said anchor to said object; and ground retaining means for retaining said anchor within said ground; the improvement comprising said anchor retaining means comprising a plurality of elongate ground-engaged members, wherein each member has a proximal portion retained to said anchor, and a distal portion in frictional engagement and retention within said ground.
In a further aspect, the invention provides a method of constructing a system comprising an object restrained to the ground with restraining anchor means comprising an elongate anchor disposed within said ground and attachment means attached to said anchor and said object;
said method comprising the steps of locating said anchor within a borehole in the ground and attaching said anchor to said object;
the improvement comprising (a) providing said anchor comprising an anchor elongate shaft;
a housing connected to said shaft and surrounding at least a part of said anchor shaft;
said housing with said part of said shaft defining a chamber; and an effective amount of an explosive within said chamber connectable to detonator means to effect detonation of said explosive to effect deformation of said housing as to provide frictional ground retention of said housing within said ground;
(b) providing said effective explosive charge means adjacent said shaft;
(c) detonating said explosive charge to effect said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means to effect frictional engagement and retention of said first terminal portions within said ground.
The anchor assembly as hereinabove defined my be used in above and below ground situations, e.g. for tying down structures, such as towers, buildings or the like, as well as in mine shafts, tunnels below ground or within mountains as providing shaft, rod or thick wire members retained in the walls, face, or roof of a tunnel.
4 BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be better understood, preferred embodiments will now be described by way of example only, with reference to the accompanying drawings, wherein Fig. 1 is a diagrammable vertical cross-section of an explosive-activated anchor assembly according to the invention, within a borehold, prior to detonation;
Fig. 2 is a diagrammatic vertical cross-section of an exploded assembly according to the invention exemplified by Fig. 1 after detonation; and wherein the same numerals denote like parts.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
With reference to Fig. l, this shows generally as 10, an assembly according to the invention having a steel, elongate anchor or rod shaft 12 disposed within a borehole 14 having sides 16 and a bottom 18. Top of rod 12 has an eyehole 20 to be subsequently connected by line 22 to pylon or tower 24.
Shaft 12 has a steel collar abutment means 26 welded thereon at a location suitable, typically, midway of the length of shaft 12, as determined by the skilled person, for the practice of the invention. Shaft 12 at its end 28 distal to eye 20 has a tapered, ground entering housing 30 containing an effective amount of explosive 32, sufficient upon detonation, to upwardly propel ring 34 enbracing and operably upwardly moveable on shaft 12. Connected to ring 34, are the distal ends 36 of a plurality of elongate members 38, which members 38 are disposed symmetrically around shaft 12 between collar 26 and housing 30.
Members 38 are essentially parallel to shaft 12, analogous to the spokes of an upside down umbrella in a closed manner. The end portions 40 of members 38 proximal to collar 26 are gently splayed outwardly of shaft 12 to a sufficient degree as to effectively, operatively, and sufficiently, abut collar 26 with such force as to cause ends 40 and, subsequently, members 38 to further splay outwardly of shaft 12 under the explosive force acting upon and propelling ring 34 upwardly along shaft 12. In consequence, with reference also to Fig. 2, ends 40 and sufficient lengths of members 38 penetrate borehole sides 16 and become embedded in frictional abutment in the ground.
In order that the invention may be better understood, preferred embodiments will now be described by way of example only, with reference to the accompanying drawings, wherein Fig. 1 is a diagrammable vertical cross-section of an explosive-activated anchor assembly according to the invention, within a borehold, prior to detonation;
Fig. 2 is a diagrammatic vertical cross-section of an exploded assembly according to the invention exemplified by Fig. 1 after detonation; and wherein the same numerals denote like parts.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
With reference to Fig. l, this shows generally as 10, an assembly according to the invention having a steel, elongate anchor or rod shaft 12 disposed within a borehole 14 having sides 16 and a bottom 18. Top of rod 12 has an eyehole 20 to be subsequently connected by line 22 to pylon or tower 24.
Shaft 12 has a steel collar abutment means 26 welded thereon at a location suitable, typically, midway of the length of shaft 12, as determined by the skilled person, for the practice of the invention. Shaft 12 at its end 28 distal to eye 20 has a tapered, ground entering housing 30 containing an effective amount of explosive 32, sufficient upon detonation, to upwardly propel ring 34 enbracing and operably upwardly moveable on shaft 12. Connected to ring 34, are the distal ends 36 of a plurality of elongate members 38, which members 38 are disposed symmetrically around shaft 12 between collar 26 and housing 30.
Members 38 are essentially parallel to shaft 12, analogous to the spokes of an upside down umbrella in a closed manner. The end portions 40 of members 38 proximal to collar 26 are gently splayed outwardly of shaft 12 to a sufficient degree as to effectively, operatively, and sufficiently, abut collar 26 with such force as to cause ends 40 and, subsequently, members 38 to further splay outwardly of shaft 12 under the explosive force acting upon and propelling ring 34 upwardly along shaft 12. In consequence, with reference also to Fig. 2, ends 40 and sufficient lengths of members 38 penetrate borehole sides 16 and become embedded in frictional abutment in the ground.
5 The aforesaid embodiment has been described with reference to the anchor assembly being placed in a vertical borehole. However, it will be understood that the assembly may be placed at an angle with respect to the ground, as is known in the art.
Members 38 may be produced to operably penetrate to a depth of, typically 5-8cm, but also l5cm or greater, if desired, by judicious selection of component dimensions and materials, typically steel, and the amount and type of explosive and disposition with respect to the nature of the ground.
As known in the prior art, anchor rods/shafts may be provided in modular form suitably adapted to be joined one shaft to another in lm, 2m or 3m sections to give a desired total suitable length for use within the borehole. Thus, several assemblies according to the present invention, may be extended into a single joined shaft.
The assemblies according to the invention may be selectively used in all types of ground, such as, for example, limestone strata, granite, Canadian Shield strata, soft soils, sands and permafrost.
A major intention of the practise of the invention defined herein is to try and maintain the integrity of the ground surrounding the borehole and to not disrupt the majority of the annular sides around the resultant positioned anchor, with the minimum of breakaway of the sides of the ground.
Although this disclosure has described and illustrated certain preferred embodiments of the invention, it is to be understood that the invention is not restricted to those particular embodiments. Rather, the invention includes all embodiments which are functional or mechanical equivalence of the specific embodiments and features that have been described and illustrated.
Members 38 may be produced to operably penetrate to a depth of, typically 5-8cm, but also l5cm or greater, if desired, by judicious selection of component dimensions and materials, typically steel, and the amount and type of explosive and disposition with respect to the nature of the ground.
As known in the prior art, anchor rods/shafts may be provided in modular form suitably adapted to be joined one shaft to another in lm, 2m or 3m sections to give a desired total suitable length for use within the borehole. Thus, several assemblies according to the present invention, may be extended into a single joined shaft.
The assemblies according to the invention may be selectively used in all types of ground, such as, for example, limestone strata, granite, Canadian Shield strata, soft soils, sands and permafrost.
A major intention of the practise of the invention defined herein is to try and maintain the integrity of the ground surrounding the borehole and to not disrupt the majority of the annular sides around the resultant positioned anchor, with the minimum of breakaway of the sides of the ground.
Although this disclosure has described and illustrated certain preferred embodiments of the invention, it is to be understood that the invention is not restricted to those particular embodiments. Rather, the invention includes all embodiments which are functional or mechanical equivalence of the specific embodiments and features that have been described and illustrated.
6
Claims (24)
1. A ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object thereto, said assembly adapted to be received within a borehole within said ground, said assembly comprising an elongate anchor shaft having shaft abutment means on a portion thereof;
a plurality of elongate ground-engageable members retained on an outside of said shaft and moveable along said shaft: each of said members having (i) a first terminal portion operably abutable with said shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent said shaft, whereby detonation of said effective explosive charge effects said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means as to effect frictional engagement and retention of said first terminal portions within said ground.
a plurality of elongate ground-engageable members retained on an outside of said shaft and moveable along said shaft: each of said members having (i) a first terminal portion operably abutable with said shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent said shaft, whereby detonation of said effective explosive charge effects said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means as to effect frictional engagement and retention of said first terminal portions within said ground.
2. An assembly as defined in claim 1 wherein said explosive charge means comprises a housing formed of a material selected from a metal, fabric, paper, cardboard and a plastics material.
3. An assembly as defined in claim 2 wherein said housing is connected to said shaft.
4. An assembly as defined in any one of claims 1 to 3 wherein said shaft abutment means comprises a collar.
5. An assembly as defined in any one of claims I to 4 wherein said elongate ground-engageable members are arranged symmetrically around the longitudinal axis of said shaft.
6. An assembly as defined in any one of claims 1 to 5 wherein each of said first terminal portions of said ground-engageable members are splayed radially outwardly of said longitudinal axis.
7. An assembly as defined in any one of claims 1 to 6 wherein each of said second terminal portions are connected to a ring member retained and operably moveable on said shaft.
8. An assembly as defined in Claim 7 wherein each of said elongate members is pivotally connected to said ring member.
9. A ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object connected thereto, said assembly adapted to be received within a borehole within said ground, and comprising (a) an elongate anchor shaft having a longitudinal axis and a proximal portion and a distal end;
(b) a housing adjacent said distal end of said shaft;
(c) a collar means adjacent said proximal portion of said shaft;
(d) an umbrella assembly between said housing and said collar means, said umbrella assembly comprising (i) a ring member located and operably moveable on an outside of said shaft adjacent said housing; and (ii) a plurality of elongate members essentially parallel to said longitudinal axis of said shaft, w herein each of said members has a distal end connected to said ring member, and a splayed proximal end portion so shaped relative to said collar means, such that in operation movement of said plurality of elongate members along said shaft effects sufficient abutment of said splayed proximal ends against said collar means as to effect frictional engagement of said proximal end portions of said members within said ground; and (e) an effective amount of explosive within said housing connectable to detonator means to effect detonation of said explosive to operably propel said umbrella means along said shaft to effect said sufficient abutment of said splayed proximal ends against said collar means.
(b) a housing adjacent said distal end of said shaft;
(c) a collar means adjacent said proximal portion of said shaft;
(d) an umbrella assembly between said housing and said collar means, said umbrella assembly comprising (i) a ring member located and operably moveable on an outside of said shaft adjacent said housing; and (ii) a plurality of elongate members essentially parallel to said longitudinal axis of said shaft, w herein each of said members has a distal end connected to said ring member, and a splayed proximal end portion so shaped relative to said collar means, such that in operation movement of said plurality of elongate members along said shaft effects sufficient abutment of said splayed proximal ends against said collar means as to effect frictional engagement of said proximal end portions of said members within said ground; and (e) an effective amount of explosive within said housing connectable to detonator means to effect detonation of said explosive to operably propel said umbrella means along said shaft to effect said sufficient abutment of said splayed proximal ends against said collar means.
10. An assembly as defined in Claim 9 wherein each of said elongate members is pivotally connected to said ring member.
11. An assembly as defined in any one of claims 1 to 10 wherein said effective charge is sufficient to effect said frictional engagement and retention of said first terminal portions within said ground to a ground thickness selected from 3-15 cm.
12. An assembly as defined in any one of claims 2 to 11 wherein said elongate anchor shaft has a tapered, ground-entering terminal portion.
13. A system comprising an object restrained by an object-anchor retaining means to or within the ground comprising said object; and a ground anchor retaining means assembly as defined in any one of Claims 1 to 12.
14. A system as defined in claim 13 wherein each of said proximal portions of said elongate members is connected to a ring member which embraces and is retained on said anchor.
15. A system as defined in claim 13 or claim 14 wherein said elongate members are symmetrically disposed radially around said anchor.
16. A system as defined in Claim 14 or 15 wherein each of said elongate members is pivotally connected to said ring member.
17. A system as defined in any one of claims 13 to 16 wherein said object-anchor means comprises a guy wire, strut or like member.
18. An assembly as defined in any one of claims 1 to 12 or a system as defined in any one of claims 13 to 17 wherein said object is an above ground structure.
19. A system as defined in claim 18 wherein said above ground structure is selected from the group consisting of a tower and a pylon.
20. An assembly as defined in any one of claims 1 to 12 or a system as defined in any one of claims 13 to 17 wherein said object is located within a mine or other subterranean location.
21. A method of constructing a system comprising an object restrained to the ground with restraining anchor means comprising an elongate anchor disposed within said ground and attachment means attached to said anchor and said object;
said method comprising the steps of locating said anchor within a borehole in the ground and attaching said anchor to said object;
the improvement comprising (a) providing said anchor comprising an elongate anchor shaft having shaft abutment means on a portion thereof;
a plurality of elongate ground-engageable members retained on and moveable along an outside of said shaft; each of said members having (i) a first terminal portion operably abutable with said shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent said shaft, whereby detonation of said effective explosive charge effects said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means as to effect frictional engagement and retention of said first terminal portions within said ground.
(b) providing said effective explosive charge means adjacent said shaft; and (c) detonating said explosive charge to effect said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means to effect frictional engagement and retention of said first terminal portions within said ground.
said method comprising the steps of locating said anchor within a borehole in the ground and attaching said anchor to said object;
the improvement comprising (a) providing said anchor comprising an elongate anchor shaft having shaft abutment means on a portion thereof;
a plurality of elongate ground-engageable members retained on and moveable along an outside of said shaft; each of said members having (i) a first terminal portion operably abutable with said shaft abutment means, and (ii) a second terminal portion operably adjacent an effective explosive charge means adjacent said shaft, whereby detonation of said effective explosive charge effects said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means as to effect frictional engagement and retention of said first terminal portions within said ground.
(b) providing said effective explosive charge means adjacent said shaft; and (c) detonating said explosive charge to effect said movement of said ground-engageable members along said shaft and said abutment with said shaft abutment means to effect frictional engagement and retention of said first terminal portions within said ground.
22. A method as defined in claim 21 wherein said explosive charge means comprises a metal housing connected to said shaft and containing said effective amount of said explosive.
23. A method as defined in claim 21 or claim 22 wherein said anchor comprises a ground anchor retaining means assembly for providing a ground-retained anchor retaining means to restrain an object connected thereto, said assembly adapted to be received within a borehole within said ground, and comprising (a) said elongate anchor shaft having a longitudinal axis and a proximal portion and a distal end;
(b) a housing adjacent said distal end of said shaft;
(c) a collar means adjacent said proximal portion of said shaft;
(d) an umbrella assembly between said housing and said collar means, said umbrella assembly comprising (i) a ring member located and operably moveable on said shaft adjacent said housing; and (ii) said plurality of elongate members essentially parallel to said longitudinal axis of said shaft, wherein each of said members has a distal end connected to said ring member, and a splayed proximal end portion so shaped relative to said collar means, such that in operation movement of said plurality of elongate members along said shaft effects sufficient abutment of said splayed proximal ends against said collar means as to effect frictional engagement of said proximal end portions of said members within said ground; and (e) said effective amount of explosive within said housing connectable to detonator means to effect detonation of said explosive to operably propel said umbrella means along said shaft to effect said sufficient abutment of said splayed proximal ends against said collar means.
(b) a housing adjacent said distal end of said shaft;
(c) a collar means adjacent said proximal portion of said shaft;
(d) an umbrella assembly between said housing and said collar means, said umbrella assembly comprising (i) a ring member located and operably moveable on said shaft adjacent said housing; and (ii) said plurality of elongate members essentially parallel to said longitudinal axis of said shaft, wherein each of said members has a distal end connected to said ring member, and a splayed proximal end portion so shaped relative to said collar means, such that in operation movement of said plurality of elongate members along said shaft effects sufficient abutment of said splayed proximal ends against said collar means as to effect frictional engagement of said proximal end portions of said members within said ground; and (e) said effective amount of explosive within said housing connectable to detonator means to effect detonation of said explosive to operably propel said umbrella means along said shaft to effect said sufficient abutment of said splayed proximal ends against said collar means.
24. A method as defined in Claim 23 wherein each of said elongate members is pivotally connected to said ring member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2507344A CA2507344C (en) | 2005-05-13 | 2005-05-13 | Explosive-activated ground anchor assembly |
| PCT/CA2006/000592 WO2006119607A1 (en) | 2005-05-13 | 2006-04-13 | Explosive-activated ground anchor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2507344A CA2507344C (en) | 2005-05-13 | 2005-05-13 | Explosive-activated ground anchor assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2507344A1 CA2507344A1 (en) | 2006-11-13 |
| CA2507344C true CA2507344C (en) | 2014-02-18 |
Family
ID=37396127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2507344A Active CA2507344C (en) | 2005-05-13 | 2005-05-13 | Explosive-activated ground anchor assembly |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2507344C (en) |
| WO (1) | WO2006119607A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904982A (en) * | 2019-12-03 | 2020-03-24 | 李治平 | Reverse locking reusable slope strengthening device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2979926B1 (en) * | 2011-09-09 | 2014-06-27 | Grp D Etudes Et De Rech S Pour L Economie Regionale Groupe Gerer | METHOD AND ANCHORING KEY IN THE SOIL |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2173266A (en) * | 1938-01-29 | 1939-09-19 | Rca Corp | Optical system |
| US3962837A (en) * | 1974-10-11 | 1976-06-15 | Sero Samuel J | Apparatus for expandably engaging the walls of an earthen hole |
| SE456833B (en) * | 1987-04-13 | 1988-11-07 | Larsson Sven Goeran | ANCHORING DEVICE FOR POSTS |
| DE4445422A1 (en) * | 1994-12-20 | 1996-06-27 | Fischer Artur Werke Gmbh | Anchor bolts that can be anchored by an explosive charge |
| EP1518976A1 (en) * | 2003-09-26 | 2005-03-30 | André Nicolet | Post with barbed anchors |
| CA2468359A1 (en) * | 2004-05-26 | 2005-11-26 | Ciro Pasini | Explosive-loaded ground anchor assembly |
-
2005
- 2005-05-13 CA CA2507344A patent/CA2507344C/en active Active
-
2006
- 2006-04-13 WO PCT/CA2006/000592 patent/WO2006119607A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904982A (en) * | 2019-12-03 | 2020-03-24 | 李治平 | Reverse locking reusable slope strengthening device |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2507344A1 (en) | 2006-11-13 |
| WO2006119607A1 (en) | 2006-11-16 |
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