WO2005047648A1 - 鋼管製ロックボルト - Google Patents
鋼管製ロックボルト Download PDFInfo
- Publication number
- WO2005047648A1 WO2005047648A1 PCT/JP2004/011200 JP2004011200W WO2005047648A1 WO 2005047648 A1 WO2005047648 A1 WO 2005047648A1 JP 2004011200 W JP2004011200 W JP 2004011200W WO 2005047648 A1 WO2005047648 A1 WO 2005047648A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diameter
- washer
- steel pipe
- rock
- pressurized fluid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing 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
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
-
- 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
- E21D21/0073—Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid
Definitions
- the present invention relates to a steel pipe mouthpiece that is inserted into a hole provided in a rock or ground to expand the rock and reinforce the rock or ground.
- an inflatable steel pipe mouth port that expands after being driven into the rock or ground is used instead of the conventional rod-shaped mouth port. It has become.
- the steel pipe lock port has, for example, a concave portion for expansion in the longitudinal direction, and has a closed end (Japanese Patent Publication No. 2-5238).
- a steel pipe rock port is inserted into a hole formed in rock or ground with a pressurized fluid press-fit sleeve covered on the rear end, and pressurized fluid is injected from the pressurized fluid press-fit hole formed in the side of the sleeve.
- the steel pipe is press-fitted, expanded and brought into close contact with the inner wall of the hole, where it is consolidated on the rock or ground.
- a lock tube made of steel pipe with a seal head for pressurization and expansion has a sleeve 2 for pressurized fluid press-fitting over the lock port body 1 (Fig. 1).
- An injection hole 3 for injecting the pressurized fluid is inserted into the side surface of the sleeve 2 and a seal head for pressurization and expansion is fitted, and both sides of the injection hole 3 are formed in a cylindrical portion 4 sealed with packing. Has become.
- Rockport ⁇ holes are drilled from above the shotcrete layer, and rock rock is reinforced by pressurization and expansion of Rockport. After that, a waterproof sheet 7 is put on the sprayed concrete layer, and a concrete cover 8 is cast.
- the waterproof sheet 7 is likely to be damaged by the protruding sleeve 2, or the cover concrete 8 tends to be thin at the protrusion of the sleeve.
- Covering the protruding part of the sleeve 2 with the cap and covering it with the waterproof sheet 7 prevents the waterproof sheet 7 from being damaged, but mounting the cap not only takes time and effort, but also makes the covering 8 thinner. . If the covering 8 becomes thinner, a reduction in strength is inevitable. Further, if the cover concrete 8 is displaced from the sprayed concrete layer due to thermal expansion and contraction of the cover concrete 8, cracks 9 are likely to be generated in the cover concrete 8 near the projecting end of the sleeve 2. Disclosure of the invention
- the present invention provides a sleeve formed from a sprayed concrete layer by adopting a steel pipe mouthpiece having a structure in which a part of a pressurized fluid press-fitting sleeve is inserted into a rockport hole provided in rock or ground.
- the purpose of this project is to reduce the height of the protrusion, suppress thickness fluctuations and cracks in the covering, and improve the reliability of reinforcement work with simple construction.
- the steel pipe lock port of the present invention has a cylindrical large-diameter protrusion having an outer diameter larger than the diameter of the washer, a pressurized fluid injection hole formed therein, and a seat having an outer diameter smaller than the diameter of the washer.
- a pressurized fluid press-fit sleeve having a gold holding portion is mounted on the pressurized fluid press-in side end of the lock port body.
- a pressurized fluid injection hole (preferably, a pressurized fluid injection hole having a hole diameter smaller than the groove width) can be formed in the groove.
- the use of galvanized steel pipe as the material of the mouth port provides corrosion resistance and eliminates the need to use a thick steel pipe in consideration of corrosion loss.
- Zinc plating, zinc-aluminum Metal alloy plating, zinc-aluminum-magnesium alloy plating, etc. can be applied.
- Examples of zinc-aluminum alloy plating include Zn-5% A1, Zn-55% A1, and the like.
- Zn-Al-Mg alloy containing Mg: 0.05 to: 10% by mass and A1: 4 to 22% by mass the corrosion resistance is remarkably improved, and the durability of Rockport is improved. I do. Brief Description of Drawings
- Fig. 1 illustrates a state in which rock port is inserted into a hole drilled in the rock.
- Fig. 2 illustrates a state in which rock port is pressurized and expanded, and then covered with concrete.
- Fig. 3A is a cross-section of Rockport before pressurization and expansion
- Fig. 3B is a cross-section of Rockport before pressurization and expansion.
- FIG. 4 is a side sectional view of a steel pipe mouthpiece according to the present invention.
- FIG. 5 is a view showing an example of a seal head for pressurization and expansion.
- the present inventors have studied a method of shortening a portion protruding outward from the surface of a sprayed concrete layer when rockport is driven into a rock.
- the simplest method is to shorten the sleeve for pressurized fluid press-fitting.However, if the sleeve is placed on both ends of a lockport base tube with an irregular cross section and the lockport is fixed by welding, and the sleeve is simply shortened, Expansion Expanding Deformation occurs near the weld of the deformed pipe during expansion, making it difficult to withstand the expansion pressure and easily damaged.
- the rock port shown in FIG. 3A when expanded as shown in FIG. 3B, a tensile stress is applied to the tip a of the concave portion, and it becomes easy to break near the tip welded portion b.
- the sleeve Depending on the material of the deformed pipe itself and the strength of the weld, the sleeve must have a certain length to suppress the deformation of the welded section of the deformed pipe at the time of pressurization and expansion. Shortening is not advisable from the viewpoint of securing strength.
- the sleeve has a double structure of a large diameter portion and a small diameter portion, the small diameter portion is disposed inside the washer, and only the large diameter portion is projected to the outer surface of the sprayed concrete layer.
- the pressurized fluid press-fit sleeve 10 is composed of a cylindrical large-diameter protrusion 11 and a small-diameter washer holding portion 12, and the outer diameter of the washer holding portion 12 is It is smaller than the hole diameter. It is desirable that the large diameter protruding portion 11 and the washer holding portion 12 have the same inner diameter.
- the large-diameter projecting portion 11 is preferably shorter in order to suppress the projecting height from the sprayed concrete layer, but is pressurized.'Pressing the Rockport body 1 by installing the expansion seal head 20 (Fig. 5) ' The minimum length is regulated by the expansion.
- the end surface of the large-diameter projecting portion 11 is preferably chamfered to prevent the waterproof sheet 7 (FIG. 2) from being damaged during construction. Prevention of breakage of the waterproof sheet by chamfering the end face means that the protective cap for the sleeve 10 can be omitted, which is also advantageous for shortening the process and reducing the cost.
- the washer holding portion 12 is effective for securing the strength as long as it is long, but does not contribute to the strength improvement if it is too long. If it is too short, it will not be able to withstand the inflation pressure, and the risk of breakage and water leakage near the weld will increase. Therefore, it is preferable that the length of the washer holding portion 12 be about (1/3 to: l) XL in relation to the length L of the large diameter projecting portion 11.
- the large-diameter projecting portion 11 and the washer holding portion 12 are formed by cutting out a small-diameter portion from a pipe having an outer diameter equal to the diameter of the large-diameter projecting portion 11 and an inner diameter equal to the outer diameter of the end of the lock port body 1.
- a method of separately cutting out the large-diameter projecting portion 11 and the small-diameter washer holding portion 12 from two types of pipes having the same inner diameter and different wall thicknesses can be adopted.
- a groove 13 is formed in the circumferential direction of the large-diameter protrusion 11, and an injection hole 14 is formed in a part of the groove 13. It is preferable that the diameter of the injection hole 14 be smaller than the width of the groove 13 so that paris generated when the injection hole 1 is formed does not protrude from the groove 13 to the peripheral surface of the large-diameter protrusion 11.
- the washer holding portion 12 penetrates through the opening of the washer 6, and the washer 6 is held at a step between the large-diameter projecting portion 11 and the washer holding portion 12. . Therefore, the washer holding part 12 can be buried in the shotcrete layer of the bedrock, the washer 6 sits on the edge of the hole, and only the washer 6 and the large-diameter protrusion 11 protrude outward from the surface of the shotcrete layer. become.
- Rockport which is buried in rock or ground, is acidified according to the amount of water, water quality, ventilation volume, etc. Exposure to various environments from alkaline to alkaline. In consideration of such an environment, when a plated steel pipe provided with a plating layer on the inner and outer surfaces is used as a rockport material, the corrosion resistance of rock rock and ground is improved, and a rockport with excellent durability can be obtained.
- the plated steel pipe can be manufactured by either pre-plating or post plating, but a pre-plated steel pipe made from a plated steel sheet is preferable in terms of productivity.
- Plating includes Zn-based plating, Zn-Al-based alloy plating, Zn-Al-Mg-based alloy plating, and the like.
- Zn-based plating 0.:! It is preferable to use a plating bath to which about 1% by mass of A1 is added and which suppresses the growth of the Fe-Zn alloy layer and improves workability.
- Zn-Al-based alloy plating there are Zn-5% A1 and Zn-55% A1, etc., which exhibit corrosion resistance twice to four times that of a Zn-based plating layer of the same thickness.
- a Zn-Al-Mg alloy coating layer as a coating layer because of its excellent corrosion resistance. If a hard Zn-Al-Mg alloy coating layer is formed, the rock port that has been transported or inserted into hard ground expands. When expanding the pipe, the occurrence of flaws due to contact with the bedrock and flying objects such as stones is suppressed. (4) Since the number of scratches at the starting point of generation is reduced, the durability and reliability of Rockport in a corrosive environment are improved in combination with the high corrosion resistance of the Zn-Al-Mg alloy plating layer.
- Zn-Al-Mg alloy plating layer provides high corrosion resistance and is a hard plating layer, it can be made as thin as 3 to 30 ⁇ as compared with the Al-Zn plating layer.
- Zn-Al-Mg alloy Me with layers, Mg: 0.05 to 10 mass%, A1: 4-22 include mass%, optionally, Ti: 0.001-0.1 mass 0 I B: 0.0005 to .045 Weight 0 / . , Rare earth elements, at least one easily oxidizable element such as Y, Zr, Si, etc .: 0.005 to 2.0% by mass.
- Mg forms a Zn-based corrosion product containing Mg on the outermost layer of the plating layer, and together with A1 in the plating layer, reduces the corrosion rate of the plating layer in a soil environment. Some of the corrosion products flow into the weld bead and the cut end face when manufacturing pre-plated steel pipes, and the corrosion of the bead and the cut end is suppressed. Additionally, if you repair sprayed bead portion, M g containing Zn-based corrosion products observed flow into during corrosion products on the sprayed layer or sprayed layer protects the base steel of the base. Mg is also an effective component for forming a Zn-Mg intermetallic compound in the plating layer to harden the plating layer.
- the Mg content is adjusted within the range of 0.05 to 10% by mass (preferably, 1 to 4% by mass). While Zn and Mg in the plating layer form Mg-containing Zn-based corrosion products, A1 forms Zn-Al-based corrosion products with extremely strong adhesion and contributes to the improvement of corrosion resistance.
- ZnZAl / Zn 2 Mg ternary eutectic appears in the solidification structure of the plating layer.
- Zn / Al / Zn 2 M g ternary eutectic structure the tissue than ZnZZn 2 Mg binary eutectic tissue Ri fine der, enhancing corrosion resistance, it is effective to harden the plating layer.
- the upper limit of the A1 content is 22 mass. /.
- Ti, and B are optional components, generation of ZniiMg 2 phases detrimental to surface appearance can be suppressed, Zn-Mg intermetallic compounds crystallized in the plating layer is only substantially Zn 2 Mg. Specifically, when Ti: 0.001% by mass or more (preferably 0.002% by mass or more), generation of the ZniiMg2 phase is effectively suppressed. However, if an excessive amount of Ti exceeding 0.1% by mass is contained, Ti-Al-based precipitates grow in the plating layer, and the plating layer becomes uneven, and the appearance is impaired.
- the suppression of formation of the ZniiMg two phase can also be achieved by containing 0.0005% by mass or more (preferably 0.001% by mass or more) of B. However, if B is contained in excess of 0.045 mass%, Ti-B-based and A1-B-based precipitates will grow in the plating layer, and the plating layer will have bumps and impair the appearance. become.
- the surface gloss deterioration phenomenon is a phenomenon in which the plating layer surface changes with time from a beautiful metallic luster immediately after production to gray, which degrades the appearance of Rockport and lowers its commercial value.
- the surface gloss deterioration phenomenon can be suppressed.
- the upper limit of the amount of rare earth elements, Y, Zr, Si, etc. is set to 2.0% by mass.
- the Fe-Al-based intermetallic compound In the Zn-Al-Mg alloy coating layer, the higher the A1 content, the more the coating layer Then, the Fe-Al-based intermetallic compound is easily formed locally.
- the Fe-Al intermetallic compound induces peeling of the plating layer during the forming process of the plated steel sheet and the plated steel pipe.
- the generation of Fe-Al-based intermetallic compounds that are harmful to workability can be suppressed by including a trace amount of Si in the plating layer.
- a pressurizing / expansion seal head 20 in which a guide ring 22 is screwed into a receiving bracket 21. ( Figure 5) is used.
- the receiving member 21 has an opening 23 into which the large-diameter projecting portion 11 is inserted, and a mounting concave portion 24 is formed.
- Annular seal packings 26 and 27 are fitted into the mounting recess 24 with the adapter ring 25 interposed therebetween, and the adapter ring 25 is positioned at a position facing the pressurized fluid supply port 28.
- the guide ring 22 is screwed into the receiving fitting 21 from the mounting recess side with the O-ring 28 interposed between the guide ring 22 and the receiving fitting 21. Since the large-diameter projection 11 is inserted into one end opening 23 of the receiving bracket 21 and the guide ring 22 is screwed into the other end, the gap between the end of the seal head and the annular seal packings 26, 27, etc. is short and large.
- the short sleeve 10 can be fitted with the radial protrusion 11.
- a rock port insertion hole is drilled in the sprayed concrete layer provided at the reinforcing point such as the bedrock, and the rock port body 1 passed through the washer 6 is inserted into the insertion hole.
- the washer 6 sits on the edge of the insertion hole, and the washer holding portion 12 extends from the opening of the washer 6 to the back side of the insertion hole. Since the step between the washer holding portion 12 and the large-diameter projecting portion 11 comes into contact with the washer 6, the posture of the sleeve 10 attached to the lock port body 1 is stabilized.
- the groove 13 is formed by fitting the opening 23 of the pressurizing and expanding seal head 20 into the large-diameter protrusion 11 protruding from the shotcrete layer and press-fitting the annular seal packings 26 and 27.
- a sealed space is defined by the adapter ring 25 and the outer peripheral surface of the large-diameter projecting portion 11.
- a pressurized fluid supply port 28 is opened in the sealed space, and the sealed space communicates with the inside of the lock port via the injection hole 14. Therefore, when a pressurized fluid is sent from the supply port 28, the deformed pipe constituting the rock port body 1 expands by the fluid pressure and is fixed to the bedrock. The degree of anchorage of the steel pipe mouthpiece fixed to the bedrock is confirmed by a pull-out resistance test.
- the groove 13 is used for mounting the collet chuck of the pull-out resistance tester, so that the steel pipe lock port is securely held and the pull-out resistance can be measured with high accuracy.
- the pull-out resistance tester for example, the device proposed by the present applicant in Japanese Patent Application No. 2003-308822 can be used.
- the cylindrical large-diameter protrusion 11 and the small-diameter washer holding part 12 constitute the pressurized fluid press-fit sleeve 10, and the rock port provided on the rock ⁇ Because the washer holding portion 12 is inserted into the inlet hole, the height of the large-diameter projecting portion 11 protruding from the surface of the spray concrete layer is significantly reduced. Therefore, the thickness fluctuation of the covering concrete 8 in the vicinity of the sleeve protrusion is suppressed, and the crack 9 of the covering concrete 8 and the damage of the waterproof sheet 7 due to the protrusion of the sleeve are prevented, and the reliability of the reinforcing work is improved. .
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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)
- Lining And Supports For Tunnels (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2564941A CA2564941C (en) | 2003-11-17 | 2004-07-29 | Rockbolt made of steel pipe |
| PL04771227T PL1693550T3 (pl) | 2003-11-17 | 2004-07-29 | Kotwa skalna wykonana ze stalowej rury |
| ES04771227.8T ES2646558T3 (es) | 2003-11-17 | 2004-07-29 | Perno de anclaje hecho de tubo de acero |
| EP04771227.8A EP1693550B1 (en) | 2003-11-17 | 2004-07-29 | Lock bolt made of steel pipe |
| US10/579,318 US7927043B2 (en) | 2003-11-17 | 2004-07-29 | Rockbolts made of steel pipes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-387109 | 2003-11-17 | ||
| JP2003387109A JP4680491B2 (ja) | 2003-11-17 | 2003-11-17 | 鋼管膨張型ロックボルト |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005047648A1 true WO2005047648A1 (ja) | 2005-05-26 |
Family
ID=34587414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/011200 Ceased WO2005047648A1 (ja) | 2003-11-17 | 2004-07-29 | 鋼管製ロックボルト |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7927043B2 (ja) |
| EP (1) | EP1693550B1 (ja) |
| JP (1) | JP4680491B2 (ja) |
| CN (1) | CN100538013C (ja) |
| CA (1) | CA2564941C (ja) |
| ES (1) | ES2646558T3 (ja) |
| PL (1) | PL1693550T3 (ja) |
| WO (1) | WO2005047648A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7773225B2 (en) | 2004-02-16 | 2010-08-10 | Tiziano Barea | Device for the optical analysis, including two-dimensional, of a thread or yarn |
| US7927043B2 (en) | 2003-11-17 | 2011-04-19 | Nisshin Steel Co., Ltd. | Rockbolts made of steel pipes |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE526132C2 (sv) * | 2003-11-13 | 2005-07-12 | Atlas Copco Rock Drills Ab | Förfarande och anordning för installering av en självborrande expanderbar bergbult och en självborrande expanderbar bergbult |
| JP2010112667A (ja) * | 2008-11-10 | 2010-05-20 | Mitsubishi Electric Corp | 空気調和機 |
| US9062547B2 (en) | 2010-06-04 | 2015-06-23 | Fci Holdings Delaware, Inc. | Expandable bolt with shielded tip |
| EP2655799A1 (en) * | 2010-12-22 | 2013-10-30 | Garford Pty Ltd | Rock bolt |
| JP2014084691A (ja) * | 2012-10-26 | 2014-05-12 | Nisshin Kokan Kk | ロックボルト |
| JP5974038B2 (ja) * | 2014-05-13 | 2016-08-23 | 有光工業株式会社 | 液体注入具 |
| WO2017025933A1 (en) * | 2015-08-12 | 2017-02-16 | Barry Graeme Holfeld | An inflatable rock bolt |
| US10669849B2 (en) * | 2018-01-05 | 2020-06-02 | Nevada Industrial LLC | Rock anchor inflation and draining system |
| CA3166654A1 (en) * | 2019-05-06 | 2021-11-12 | Barry Graeme Holfeld | An inflatable rock bolt |
| JP7651107B2 (ja) * | 2021-03-02 | 2025-03-26 | 株式会社フジタ | ロックボルト及びその製造方法 |
| CN113153397B (zh) * | 2021-04-28 | 2023-06-27 | 中交第二航务工程局有限公司 | 控制隧道锚杆露头长度的套管装置及其使用方法 |
| CN117268902A (zh) * | 2023-10-30 | 2023-12-22 | 中国地质大学(北京) | 用于原位直剪试验的抗拔装置及使用方法 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63185900U (ja) * | 1987-05-21 | 1988-11-29 | ||
| JPS6443700A (en) * | 1987-08-12 | 1989-02-15 | Sato Kogyo | Method of fixing construction of tubular lock bolt |
| US4921010A (en) | 1988-04-22 | 1990-05-01 | Unex Corporation | Swivel connector |
| JPH07189598A (ja) * | 1993-12-27 | 1995-07-28 | K F C:Kk | ロックボルトの施工法 |
| DE10057041A1 (de) | 2000-11-17 | 2002-05-23 | Carbotech Fosroc Gmbh | Gebirgsanker mit aufweitbarem Ankerinnenrohr |
| JP2003206698A (ja) * | 2001-10-05 | 2003-07-25 | Nisshin Steel Co Ltd | めっき鋼管製ロックボルト |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE427764B (sv) * | 1979-03-09 | 1983-05-02 | Atlas Copco Ab | Bergbultningsforfarande jemte rorformig bergbult |
| NO159201C (no) * | 1980-09-08 | 1988-12-07 | Atlas Copco Ab | Fremgangsmaate ved bolting i fjell og kombinert ekspansjonsbolt og installasjonsanordning for samme. |
| US4954017A (en) * | 1980-11-10 | 1990-09-04 | The Curators Of The University Of Missouri | Expansion bolt and mine roof reinforcement |
| SE8106165L (sv) * | 1981-10-19 | 1983-04-20 | Atlas Copco Ab | Forfarande for bergbultning och bergbult |
| SE8605408D0 (sv) * | 1986-12-16 | 1986-12-16 | Atlas Copco Ab | Method of stabilizing a rock structure and stabilizer therefor |
| JPS63185900A (ja) | 1987-01-29 | 1988-08-01 | Sumitomo Electric Ind Ltd | 複合酸化物強誘電体の単結晶ウエハの熱処理方法 |
| CN2236019Y (zh) * | 1994-11-04 | 1996-09-25 | 中国矿业大学 | 高水速凝材料注浆锚杆 |
| AUPO220596A0 (en) * | 1996-09-09 | 1996-10-03 | Geosystems | Cable bolt |
| JP4035001B2 (ja) | 2002-06-13 | 2008-01-16 | 日新製鋼株式会社 | ロックボルト加圧・膨張用シールヘッドおよび複数ロックボルト同時加圧・膨張方法 |
| JP4203566B2 (ja) | 2003-09-01 | 2009-01-07 | 日新製鋼株式会社 | ロックボルト用引抜抵抗試験装置及びロックボルト引抜抵抗試験方法 |
| JP4680491B2 (ja) | 2003-11-17 | 2011-05-11 | 日新製鋼株式会社 | 鋼管膨張型ロックボルト |
-
2003
- 2003-11-17 JP JP2003387109A patent/JP4680491B2/ja not_active Expired - Lifetime
-
2004
- 2004-07-29 PL PL04771227T patent/PL1693550T3/pl unknown
- 2004-07-29 CA CA2564941A patent/CA2564941C/en not_active Expired - Lifetime
- 2004-07-29 WO PCT/JP2004/011200 patent/WO2005047648A1/ja not_active Ceased
- 2004-07-29 EP EP04771227.8A patent/EP1693550B1/en not_active Expired - Lifetime
- 2004-07-29 CN CNB2004800338065A patent/CN100538013C/zh not_active Expired - Lifetime
- 2004-07-29 ES ES04771227.8T patent/ES2646558T3/es not_active Expired - Lifetime
- 2004-07-29 US US10/579,318 patent/US7927043B2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63185900U (ja) * | 1987-05-21 | 1988-11-29 | ||
| JPS6443700A (en) * | 1987-08-12 | 1989-02-15 | Sato Kogyo | Method of fixing construction of tubular lock bolt |
| US4921010A (en) | 1988-04-22 | 1990-05-01 | Unex Corporation | Swivel connector |
| JPH07189598A (ja) * | 1993-12-27 | 1995-07-28 | K F C:Kk | ロックボルトの施工法 |
| DE10057041A1 (de) | 2000-11-17 | 2002-05-23 | Carbotech Fosroc Gmbh | Gebirgsanker mit aufweitbarem Ankerinnenrohr |
| JP2003206698A (ja) * | 2001-10-05 | 2003-07-25 | Nisshin Steel Co Ltd | めっき鋼管製ロックボルト |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1693550A4 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7927043B2 (en) | 2003-11-17 | 2011-04-19 | Nisshin Steel Co., Ltd. | Rockbolts made of steel pipes |
| US7773225B2 (en) | 2004-02-16 | 2010-08-10 | Tiziano Barea | Device for the optical analysis, including two-dimensional, of a thread or yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1882763A (zh) | 2006-12-20 |
| US20070081864A1 (en) | 2007-04-12 |
| CN100538013C (zh) | 2009-09-09 |
| PL1693550T3 (pl) | 2017-12-29 |
| EP1693550A1 (en) | 2006-08-23 |
| US7927043B2 (en) | 2011-04-19 |
| JP2005146701A (ja) | 2005-06-09 |
| ES2646558T3 (es) | 2017-12-14 |
| EP1693550A4 (en) | 2009-09-30 |
| EP1693550B1 (en) | 2017-09-06 |
| CA2564941C (en) | 2012-05-15 |
| CA2564941A1 (en) | 2005-05-26 |
| JP4680491B2 (ja) | 2011-05-11 |
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