WO2007015614A1 - Boulon de blocage de type précédant la tension et procédé de construction l’utilisant - Google Patents

Boulon de blocage de type précédant la tension et procédé de construction l’utilisant Download PDF

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Publication number
WO2007015614A1
WO2007015614A1 PCT/KR2006/003008 KR2006003008W WO2007015614A1 WO 2007015614 A1 WO2007015614 A1 WO 2007015614A1 KR 2006003008 W KR2006003008 W KR 2006003008W WO 2007015614 A1 WO2007015614 A1 WO 2007015614A1
Authority
WO
WIPO (PCT)
Prior art keywords
tensioning member
frusto
wedge
conical
expansion members
Prior art date
Application number
PCT/KR2006/003008
Other languages
English (en)
Inventor
Jong Duck Shin
Original Assignee
Jong Duck Shin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020060067740A external-priority patent/KR100817627B1/ko
Application filed by Jong Duck Shin filed Critical Jong Duck Shin
Publication of WO2007015614A1 publication Critical patent/WO2007015614A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/006—Anchoring-bolts made of cables or wires

Definitions

  • the present invention relates, in general, to a preceding tension type rock bolt and a construction method using the same which reinforces the support force of discontinuous rock formations in tunnel excavation work or rock-based construction and, more particularly, to a preceding tension type rock bolt and a construction method using the same, wherein expansion members are expanded by a wedge secured to an end of a tensioning member to be securely fixed against the inner surface of a drilled hole, a pipe is removed, tension force is applied to the tensioning member, and the tensioned state of the tensioning member is maintained to thereby apply a preceding load, so that, since the discontinuous surfaces of rock formations can be restrained, the safety of a rock slope is increased, and because it is possible to immediately carry out subsequent excavation work without waiting for grouting material to cure, a construction period can be shortened.
  • a rock bolt is employed in a ground reinforcement technique for reinforcing the stiffness of an underground structure, a tunnel, etc.
  • a hole is drilled in a rock formation inside a tunnel to have a predetermined diameter and depth, and the rock bolt is inserted into the drilled hole to be fixed therein.
  • Korean Patent No. 108419 discloses an anchoring bolt structure for tunnel lining.
  • the anchoring bolt structure for tunnel lining includes a bolt shank which has a first tapered wedge member on the distal end thereof and a threaded portion on the proximal end thereof to be threadedly coupled with a nut, and an expansion bushing which can be expanded by the first tapered wedge member.
  • the expansion bushing has a tubular configuration which defines tapered wedge receiving spaces on both end portions thereof.
  • Each of the outer surfaces of both end portions of the expansion bushing is formed with a saw tooth-shaped spiral projection.
  • Each of both end portions of the expansion bushing is cut in the lengthwise direction thereof to form a plurality of expansion pieces.
  • the present invention has been made in an effort to solve the problems occurring in the conventional rock bolt employed when carrying out tunnel excavation work or rock-based construction, and an object of the present invention is to provide a preceding tension type rock bolt and a construction method using the same, wherein expansion members are expanded by a wedge secured to an end of a tensioning member to be securely fixed against the inner surface of a drilled hole, a pipe is removed, tension force is applied to the tensioning member, and the tensioned state of the tensioning member is maintained to thereby apply a preceding load, so that, since the discontinuous surfaces of rock formations can be restrained, the safety of a rock slope is increased, and because it is possible to immediately carry out subsequent excavation work without waiting for grouting material to cure, a construction period can be shortened.
  • Another object of the present invention is to provide a preceding tension type rock bolt and a construction method using the same wherein, as a pipe is removed after expansion members are expanded and is securely fixed against the inner surface of a drilled hole, the pipe, which is a costly construction material, can be reused in the assembly of another rock bolt at the construction site, so that the economic burden imposed by costly construction materials, which is becoming more serious, can be decreased by no less than one-third.
  • the preceding tension type rock bolt and the construction method using the same provide advantages in that expansion members are expanded by a wedge secured to the end of a tensioning member to be securely fixed against the inner surface of a drilled hole, a pipe is removed, tension force is applied to the tensioning member, and the tensioned state of the tensioning member is maintained to thereby apply a preceding load.
  • expansion members are expanded by a wedge secured to the end of a tensioning member to be securely fixed against the inner surface of a drilled hole, a pipe is removed, tension force is applied to the tensioning member, and the tensioned state of the tensioning member is maintained to thereby apply a preceding load.
  • the discontinuous surfaces of rock formations can be restrained, the safety of a rock slope is increased. Therefore, because it is possible to immediately carry out subsequent excavation work without waiting for grouting material to cure, a construction period can be shortened.
  • FIG. 1 is a cross-sectional view schematically illustrating the construction of a preceding tension type rock bolt in accordance with an embodiment of the present invention
  • FIG. 2 is an exploded perspective view independently illustrating the embedded fixing section inserted into a drilled hole in the preceding tension type rock bolt in accordance with the present invention
  • FIG. 3 is an assembled cross-sectional view of FIG. 2;
  • FIG. 4 is a side view of FIG. 3, with a wedge cap removed;
  • FIG. 5 is an exploded perspective view independently illustrating the outside fixing section mounted to the entrance of the drilled hole in the preceding tension type rock bolt in accordance with the present invention
  • FIG. 6 is an assembled cross-sectional view of FIG. 5;
  • FIGs. 7 through 11 are cross-sectional views illustrating a construction method using the preceding tension type rock bolt in accordance with the present invention.
  • FIGs. 12 and 13 are an exploded perspective view and a cross-sectional view illustrating another embodiment of the embedded fixing section in the preceding tension type rock bolt in accordance with the present invention.
  • FIGs. 14, 15, 16 and 17 are an exploded perspective view, cross-sectional views and a side view illustrating other embodiments of the wedge of the embedded fixing section in the preceding tension type rock bolt in accordance with the present invention.
  • FIG. 18 is a cross-sectional view illustrating another embodiment of the outside fixing section in the preceding tension type rock bolt in accordance with the present invention. Best Mode for Carrying Out the Invention
  • a preceding tension type rock bolt comprising a pipe; two or more expansion members detachably coupled to one end of the pipe to be uniformly spaced apart from one another, having a substantially sectorial sectional shape, and defining a tensioning member opening and a frusto-conical opening; a tensioning member installed through the pipe and the expansion members such that both ends thereof project out of the pipe and the expansion members; and a wedge secured to one end of the tensioning member and inserted into the frusto-conical opening of the expansion members to expand the expansion members radially outward.
  • the expansion members are not completely separated from one another and are partially coupled with one another by a coupling element; and a ring groove is defined in the expansion members adjacent to one end of the frusto-conical opening, and a snap ring is fitted into the ring groove such that the wedge is prevented from being released.
  • the rock bolt according to the present invention can be put on the market without assembling an outer fixing section to the tensioning member, and the outer fixing section can be assembled later to the tensioning member at a construction site.
  • the tensioning member opening and the frusto-conical opening of the expansion members are concentric with an axis of the expansion members which are in an assembled state; and, when three expansion members are uniformly spaced apart from one another, three tensioning member openings and frusto-conical openings are defined inside the expansion members so as to be aligned with boundary regions between two adjoining expansion members.
  • the wedge comprises a hollow frusto-conical wedge which is inserted into the frusto-conical opening of the expansion members, grips an outer surface of the tensioning member and is uniformly split into at least two wedge pieces, and a wedge cap which is threadedly coupled to a large diameter end of the frasto-conical wedge to prevent the frasto-conical wedge from being released.
  • the wedge includes a hollow frusto-conical liner which is inserted into the frusto-conical opening of the expansion members, defines a frusto-conical opening therein and has a frusto-conical outer surface; a hollow frusto-conical wedge which is uniformly split into at least two wedge pieces and is inserted into the frusto-conical opening of the hollow frusto-conical liner to grip the outer surface of the tensioning member; and a liner cap which is threadedly coupled to a large diameter end of the hollow frusto-conical liner to prevent the frusto- conical wedge from being released.
  • the wedge includes a hollow frusto-conical wedge housing which is formed to have a configuration corresponding to that of the frusto-conical opening of the expansion members, is defined with frusto- conical openings at three uniformly spaced-apart positions and a tensioning member opening for collecting three tensioning member branches extending through the frusto- conical openings into one tensioning member; hollow frusto-conical wedges respectively inserted into the frusto-conical openings of the hollow frusto-conical wedge housing to grip the outer surface of the tensioning member branches which extend through the hollow frusto-conical wedges; and a wedge housing cap threadedly coupled to a large diameter end of the wedge housing to prevent the frusto-conical wedges from being released.
  • the inner surface of the frusto-conical wedge housing is rounded, so that the tensioning member is not bent in a lengthwise direction thereof.
  • each of the wedge cap, the liner cap, and the wedge housing cap defines a tensioning member accommodating part so that the liner cap can be threadedly coupled to the frusto-conical wedge in the state in which the tensioning member projects rearward beyond the frusto-conical wedge.
  • the respective expansion members are fastened to a flange which is formed on one end of the pipe, by means of at least one bolt.
  • an outside fixing section is installed on the other end of the tensioning member to maintain the tensioning member in a tensioned state.
  • the outside fixing section comprises a bearing plate installed at an entrance of a drilled hole corresponding to the other end of the tensioning member and defined with a tensioning member opening through which the tensioning member passes, and a tension maintaining member provided to the other end of the tensioning member which projects out of the bearing plate to maintain the state in which tension force is applied to the tensioning member.
  • a packer is installed on the outside fixing section to closely plug the entrance of the drilled hole. At this time, two hose openings must be defined in each of the packer and the bearing plate so that a grouting material can be poured into the drilled hole and foreign substances can be removed.
  • the tension maintaining member comprises a fixed body which is defined with a tensioning member opening and a frusto-conical opening, at least two outer wedge pieces which are inserted into the frusto-conical opening of the fixed body to secure the tensioning member, and a body cap which is threadedly locked to the fixed body to cover the other end of the tensioning member.
  • a construction method using a preceding tension type rock bolt comprising the drilling step of drilling a hole in a rock formation; the rock bolt insertion step of inserting an embedded fixing section of the rock bolt into the drilled hole; the tensioning step of pulling and tensioning a tensioning member while supporting a pipe using the embedded fixing section of the rock bolt; and the outside fixing step of installing a bearing plate and a tension maintaining member on the other end of the tensioning member so that the bearing plate and the tension maintaining member can be supported at the entrance of the drilled hole, pulling the tensioning member and maintaining the tensioned state of the tensioning member, wherein the tensioning step includes the inside fixing step, in which, as the tensioning member is tensioned, a wedge secured to one end of the tensioning member biases expansion members radially outward, by which bolts are cut to separate the expansion members and the pipe from each other, and then, the expansion members are expanded radially outward to be fixed against the
  • the preceding tension type rock bolt and the construction method using the same provide advantages in that expansion members are expanded by a wedge secured to the end of a tensioning member to be securely fixed against the inner surface of a drilled hole, a pipe is removed, tension force is applied to the tensioning member, and the tensioned state of the tensioning member is maintained to thereby apply a preceding load. Consequently, since the discontinuous surfaces of rock formations can be restrained, the safety of a rock slope is increased. Therefore, because it is possible to immediately carry out subsequent excavation work without waiting for grouting material to cure, a construction period can be shortened. As a result, a construction cost can be decreased, and the efficiency of construction work can be improved.
  • Mode for the Invention is
  • FIG. 1 is a cross-sectional view schematically illustrating the construction of a preceding tension type rock bolt in accordance with an embodiment of the present invention
  • FIGs. 2 through 4 are views illustrating the embedded fixing section inserted into a drilled hole in the preceding tension type rock bolt in accordance with the present invention
  • FIG. 5 is an exploded perspective view independently illustrating the outside fixing section mounted to the entrance of the drilled hole in the preceding tension type rock bolt in accordance with the present invention
  • FIG. 6 is an assembled cross-sectional view of FIG. 5.
  • the preceding tension type rock bolt comprises an elongate pipe 10 which is formed with a flange 12 at the distal end thereof, expansion members 20 which are fastened to the flange 12 of the pipe 10 by means of bolts 14, a wedge 40 which is provided inside the expansion members 20 to expand the expansion members 20, a tensioning member 30 which has a distal end secured to the wedge 40 and extends through the pipe 10, and an outside fixing section 50 which is provided to the proximal end of the pipe 10 adjacent to the proximal end of the tensioning member 30.
  • the expansion members 20 concentrically define a tensioning member opening 21 and a frusto-conical opening 22.
  • the expansion members 20 are regularly spaced apart from one another around the tensioning member opening 21.
  • three expansion members 20, each having a sectorial sectional shape, are provided.
  • the expansion members 20 are fastened to the flange 12 by means of the bolts 14 to define a circular configuration.
  • the three expansion members 20 are illustrated as each having the sectorial sectional shape and being uniformly spaced apart from one another, it can be envisaged that two expansion members each having a semi-circular sectional shape are uniformly spaced apart from each other when the diameter of the circular configuration is small, or that four or more expansion members each having a sectorial sectional shape are uniformly spaced apart from one another when the diameter of the circular configuration is large.
  • the tensioning member 30 extends through the pipe 10 and the expansion members
  • the tensioning member 30 is formed in a manner such that one steel wire is centrally positioned and six steel wires are twisted around the central wire.
  • the tensioning member 30 can be replaced with a steel rod.
  • the wedge 40 is secured to the distal end of the tensioning member 30 and is inserted into the frusto-conical opening 22 of the expansion members 20.
  • the wedge 40 is pulled along with the tensioning member 30, the wedge 40 is gradually inserted into the frusto-conical opening 22 of the expansion members 20 in the tensioning direction of the tensioning member 30, and expands the expansion members 20 radially outward.
  • the wedge 40 comprises a hollow frusto-conical wedge 42 which is inserted into the frusto-conical opening 22 of the expansion members 20, grips the outer surface of the tensioning member 30 and is uniformly split into at least three wedge pieces, and a wedge cap 43 which is threadedly coupled to the large diameter end of the frusto- conical wedge 42 to prevent the frusto-conical wedge 42 from being released. Since the inner surface of the frusto-conical wedge 42 performs the main function of gripping the outer surface of the tensioning member 30, the inner surface of the frusto- conical wedge 42 is formed with a plurality of saw teeth such that the outer surface of the tensioning member 30 can be reliably gripped by the frusto-conical wedge 42.
  • the wedge 40 may have any configuration so long as it can expand the expansion members 20 radially outward, the wedge 40 can be directly secured to the distal end of the tensioning wire 30 or can be indirectly secured to the distal end of the tensioning wire 30 through threaded locking.
  • each bolt 14 can be formed to be easily cut by the force (pushing force) of the wedge 40 pushing the expansion members 20 radially outward to allow the expansion members 20 to be easily expanded.
  • each bolt 14 can be formed, at a boundary region between the expansion members 20 and the flange 12, to have a neck portion which has a diameter less than the nominal diameter of the bolt 14.
  • the outside fixing section 50 comprises a bearing plate 51 and a tension maintaining member 55.
  • the bearing plate 51 is defined with a tensioning member opening 52 through which the tensioning member 30 passes.
  • the tension maintaining member 55 is provided to the proximal end of the tensioning member 30 which projects out of the bearing plate 51 to maintain the state in which tension force is applied to the tensioning member 30.
  • the tension maintaining member 55 comprises a fixed body 56 which is defined with a tensioning member opening 56a and a frusto- conical opening 56b, three outer wedge pieces 57 which are inserted into the frusto- conical opening 56b of the fixed body 56 to secure the proximal end of the tensioning member 30, which extends through the tensioning member opening 56a, and a body cap 58 which is threadedly locked to the fixed body 56 to cover the distal end of the tensioning member 30 and prevent the outer wedge pieces 57 from being released.
  • the unexplained reference numeral 80 designates a drilled hole which is drilled in a rock formation to reinforce the discontinuous surfaces of the rock formation, 82 a tensioning member tensioning mechanism for applying tension force to the tensioning member 30, and 84 an outer wedge piece insertion mechanism for inserting the outer wedge pieces 57 of the outside fixing section 50 into the frusto-conical opening 56b of the fixed body 56.
  • the drilled hole 80 is defined in a discontinuous rock formation in carrying out tunnel excavation work or rock-based construction so that the preceding tension type rock bolt according to the present invention can be inserted into the drilled hole 80. Then, the embedded fixing section of the rock bolt is inserted into the drilled hole 80 to be positioned as shown in FIG. 7.
  • the outside fixing section 50, the outer wedge piece insertion mechanism 84 and the tensioning member tensioning mechanism 82 are sequentially installed on the tensioning member 30 with the pipe 10 removed. Thereupon, the tensioning member tensioning mechanism 82 is operated to pull the tensioning member 30 so that predetermined tension force is applied to the tensioning member 30. While pulling the tensioning member 30 in this way, attention must be paid not to press the outer wedge pieces 57 of the outside fixing section 50.
  • expansion members 20 are expanded, the outer surfaces of the expansion members 20 are brought into contact with the inner surface of the drilled hole 80. Then, as the expansion members 20 are further expanded, in the course of tensioning the tensioning member 30, the expansion members 20 are driven into and firmly fixed to the inner surface of the drilled hole 80.
  • FIGs. 12 and 13 are an exploded perspective view and a cross-sectional view illustrating another embodiment of the embedded fixing section in the preceding tension type rock bolt in accordance with the present invention.
  • the expansion members 20 are coupled with one another at the proximal ends thereof by a coupling element 25.
  • a ring groove 23 is defined on the inner surface of and adjacent to the distal end of the frusto-conical opening 22, and a snap ring 24 is fitted into the ring groove 23 so that the wedge 40 inserted into the frusto-conical opening 22 is prevented from being released.
  • the coupling element 25 must be easily broken when external force is applied thereto by the wedge 40, and therefore, it is preferred that the coupling element 25 have a thickness of 1-3 mm. If the coupling element 25 has a thickness less than 1 mm, the coupling element 25 can be deformed or broken even by the application of a small force, which is not desirable. Also, if the coupling element 25 has a thickness greater than 3 mm, excessive initial external force is required to expand the expansion members 20 radially outward, which is not desirable.
  • FIGs. 14 and 15 are an exploded perspective view and a cross-sectional view illustrating another embodiment of the embedded fixing section in the preceding tension type rock bolt in accordance with the present invention.
  • the wedge 40 includes a hollow frusto-conical liner 41 which defines a frusto-conical opening therein and has a frusto-conical outer surface.
  • a hollow frusto-conical wedge 42 is uniformly split into at least three wedge pieces and is inserted into the frusto-conical opening of the hollow frusto-conical liner 41 to grip the outer surface of the tensioning member 30.
  • a liner cap 43a is threadedly coupled to the large diameter end of the hollow frusto-conical liner 41 to prevent the frusto-conical wedge 42 from being released.
  • the liner cap 43a can define a tensioning member accommodating part 431 so that the tensioning member 30 can be covered by the liner cap 43a in a state in which it extends rearward beyond the frusto-conical wedge 42.
  • the tensioning member 30 can be gripped with increased power. Therefore, as the wires constituting the tensioning member 30 are untwisted behind the frusto-conical wedge 42, advantageous effects can be attained in that the diameter of the tensioning member 30 is increased behind the frusto-conical wedge 42. If the diameter of the tensioning member 30 is increased in this way, because the tensioning member 30 is trapped by the frusto-conical wedge 42, the tensioning member 30 can be more reliably gripped.
  • FIGs. 16 and 17 are a cross-sectional view and a side view illustrating another embodiment for the embedded fixing section in the preceding tension type rock bolt in accordance with the present invention.
  • the wedge 40 includes a hollow frusto-conical wedge housing 44 which is formed to have a configuration corresponding to the frusto- conical opening 22 of the expansion members 20 and is defined with frusto-conical openings at three uniformly spaced-apart positions and a tensioning member opening for collecting the three tensioning member branches extending through the frusto- conical openings into one tensioning member 30.
  • Hollow frusto-conical wedges 42 are inserted into respective frusto-conical openings of the hollow frusto-conical wedge housing 44 to grip the outer surface of the tensioning member branches which extend through the hollow frusto-conical wedges 42.
  • a wedge housing cap 43b is threadedly coupled to the large diameter end of the wedge housing 44 to prevent the frusto-conical wedges 42 from being released.
  • the inner surface of the frusto-conical wedge housing 44 must be properly rounded so that the tensioning member 30 is not bent in the lengthwise direction thereof. If the tensioning member 30 is bent, when tensioning the tensioning member 30, a load is locally concentrated, as a result of which the tensioning member 30 can snap.
  • the expansion members 20 according to this embodiment can be enlarged up to 1.3 times and can be applied to the case where the drilled hole has a diameter of 105-140 mm. Also, because it is possible to apply increased tension force through the three tensioning member branches, the gap between the bolts can be increased and the number of drilled holes for installing rock bolts can be decreased, whereby the construction cost can be remarkably reduced.
  • FIG. 18 is a cross-sectional view illustrating another embodiment for the outside fixing section in the preceding tension type rock bolt in accordance with the present invention.
  • the entrance of the drilled hole 80 is plugged by a packer 60 which is defined with a tensioning member opening 61 and the hose openings 62, and the bearing plate 51 is provided outside of the packer 60.
  • the packer 60 and the bearing plate 51 are defined with two hose openings 62 and 53 for pouring the grouting material into the drilled hole 80 and removing foreign substances.
  • the rock bolt in which the outside fixing section is temporarily installed on the tensioning member 30 at the proximal end of the pipe 10 with the expansion members 20 mounted at the distal end of the pipe 10, is inserted into the drilled hole 80. Then, as the tensioning member 30 is pulled using the tensioning member tensioning mechanism 82 as described above, the wedge 40 which is secured to the distal end of the tensioning member 30 expands the expansion members 20, whereby the embedded fixing section can be firmly fixed to the inner surface of the drilled hole 80.
  • the expansion members 20 are expanded by the wedge 40 in this way, the expansion members 20 cut the bolts 14 which lock the pipe 10 and the expansion members 20 with each other. As the bolts 14 are cut, construction work can be completed with the separated pipe 20 not removed from, but remaining in, the drilled hole 80, or thereafter, cement mortar, as the grouting material can be poured into the drilled hole 80.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

La présente invention concerne un boulon de blocage de type précédant la tension, comprenant un tuyau ; deux éléments de dilatation ou plus, couplés de manière détachable à une extrémité du tuyau pour être espacés l’un de l’autre de manière uniforme, ayant une forme en section transversale sensiblement sectorielle et définissant une ouverture d’élément de tension et une ouverture tronconique ; un élément de tension installé à travers le tuyau et les éléments de dilatation, de manière à ce que les deux extrémités de celui-ci fassent saillie hors du tuyau et des éléments de dilatation ; et une cale fixée au niveau d’une extrémité de l’élément de tension et insérée dans l’ouverture tronconique des éléments de dilatation pour dilater les éléments de dilatation radialement vers l'extérieur.
PCT/KR2006/003008 2005-08-03 2006-07-31 Boulon de blocage de type précédant la tension et procédé de construction l’utilisant WO2007015614A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2005-0071025 2005-08-03
KR1020050071025 2005-08-03
KR20050102887 2005-10-31
KR10-2005-0102887 2005-10-31
KR1020060067740A KR100817627B1 (ko) 2005-08-03 2006-07-20 선행인장타입 록 볼트 및 이를 이용한 시공방법
KR10-2006-0067740 2006-07-20

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Publication Number Publication Date
WO2007015614A1 true WO2007015614A1 (fr) 2007-02-08

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PCT/KR2006/003008 WO2007015614A1 (fr) 2005-08-03 2006-07-31 Boulon de blocage de type précédant la tension et procédé de construction l’utilisant

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010006374A1 (fr) * 2008-07-18 2010-01-21 Nupress Tools Pty Limited Stabilisation de masses rocheuses
CN102182480A (zh) * 2011-05-04 2011-09-14 中铁三局集团有限公司 一种砂浆锚杆施工方法
CN102678148A (zh) * 2012-04-25 2012-09-19 山东科技大学 一种新型高强恒阻大变形锚杆及其使用方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599140A (en) * 1995-09-13 1997-02-04 The Eastern Company Mine roof support system including an expansion anchor with means assisting resin component mixing and method of installation thereof
JP2001090067A (ja) * 1999-09-22 2001-04-03 Kamishimagumi:Kk ロックボルトおよびロックボルト施工方法
JP2001164899A (ja) * 2000-04-12 2001-06-19 Kamishimagumi:Kk ロックボルト
EP1397580A1 (fr) * 2001-06-04 2004-03-17 Romtech Limited Boulon d'ancrage et procede d'utilisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5599140A (en) * 1995-09-13 1997-02-04 The Eastern Company Mine roof support system including an expansion anchor with means assisting resin component mixing and method of installation thereof
JP2001090067A (ja) * 1999-09-22 2001-04-03 Kamishimagumi:Kk ロックボルトおよびロックボルト施工方法
JP2001164899A (ja) * 2000-04-12 2001-06-19 Kamishimagumi:Kk ロックボルト
EP1397580A1 (fr) * 2001-06-04 2004-03-17 Romtech Limited Boulon d'ancrage et procede d'utilisation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010006374A1 (fr) * 2008-07-18 2010-01-21 Nupress Tools Pty Limited Stabilisation de masses rocheuses
CN102182480A (zh) * 2011-05-04 2011-09-14 中铁三局集团有限公司 一种砂浆锚杆施工方法
CN102182480B (zh) * 2011-05-04 2013-03-13 中铁三局集团有限公司 一种砂浆锚杆施工方法
CN102678148A (zh) * 2012-04-25 2012-09-19 山东科技大学 一种新型高强恒阻大变形锚杆及其使用方法
CN102678148B (zh) * 2012-04-25 2014-11-12 山东科技大学 一种新型高强恒阻大变形锚杆及其使用方法

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