EP0398838B1 - Injektionsrohr mit Ankerwirkung - Google Patents

Injektionsrohr mit Ankerwirkung Download PDF

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Publication number
EP0398838B1
EP0398838B1 EP90630104A EP90630104A EP0398838B1 EP 0398838 B1 EP0398838 B1 EP 0398838B1 EP 90630104 A EP90630104 A EP 90630104A EP 90630104 A EP90630104 A EP 90630104A EP 0398838 B1 EP0398838 B1 EP 0398838B1
Authority
EP
European Patent Office
Prior art keywords
injection
borehole
roof
injection tube
bolt stem
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.)
Expired - Lifetime
Application number
EP90630104A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0398838A1 (de
Inventor
Archibald Richter
Erwin Schulz
Jürgen Krahe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bergwerksverband GmbH
Schmidt Kranz and Co GmbH
Original Assignee
Bergwerksverband GmbH
Schmidt Kranz and Co GmbH
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
Application filed by Bergwerksverband GmbH, Schmidt Kranz and Co GmbH filed Critical Bergwerksverband GmbH
Priority to AT90630104T priority Critical patent/ATE98742T1/de
Publication of EP0398838A1 publication Critical patent/EP0398838A1/de
Application granted granted Critical
Publication of EP0398838B1 publication Critical patent/EP0398838B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001—Improving soil or rock, e.g. by freezing; Injections
    • 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
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting

Definitions

  • the invention relates to an injection tube for injecting media particularly suitable for rock solidification, such as synthetic resin, which essentially consists of a tube that can be inserted into a borehole and is provided with a borehole closure and a first check valve, the tube being designed as an anchor rod and having one end with a thread is formed.
  • the injection lances consist of pipe sections which can be connected to one another via sleeves and each have a connection for the trailing lines of a two-component synthetic resin, for example, and a check valve in the deepest hole at the ends facing the mouth of the borehole.
  • a mechanically actuable borehole closure is provided in sections via sleeves around an injection pipe.
  • the mechanical borehole closure is widened by rotating the injection pipe until it bears against the borehole wall.
  • Anchors are often used to stabilize the mountains. Their gluing with cartridges is particularly difficult when the mountains are loosened, which essentially consists in the fact that the cartridges often cannot be inserted into the borehole. In such cases, full bonding of the anchor cannot be guaranteed.
  • the invention is based on the object of combining rock consolidation by injection with the additional stabilization of the rock by an anchor effect in a labor-saving and economical manner.
  • an injection head is provided in the threaded end of the anchor rod, in which the first check valve is arranged and a rupture disc is arranged towards the other end of the anchor rod, and that the borehole closure as a surrounding the anchor rod and at the ends of the inflatable hose section held by covers is formed with a second check valve integrated between the anchor rod and the inflation chamber.
  • the injection pipe designed as an anchor rod
  • the injection pipe is inserted into a borehole in the appropriate design, based on the wall thickness and the corresponding steel, so that the so-called hydraulic inflatable packer is located in the region of the borehole mouth.
  • the required injection pressure is applied to the anchor rod.
  • the rupture disc provided at the end of the anchor rod causes such a high back pressure to form within the anchor rod that the check valve provided between the anchor rod and the inflation chamber of the borehole closure opens and the inflation process begins. This check valve prevents the pressure from relaxing after sealing Borehole closure when the rupture disc breaks and the injection medium escapes into the borehole.
  • the entire borehole is filled above the borehole closure.
  • the injection tube designed as an anchor rod is completely glued after the injection agent has hardened.
  • the rupture disc can be adapted to the requirements of the mountains, dimensioned to different bursting pressures and can also be arranged in the anchor rod behind the borehole closure. In addition to the outlet at the end of the anchor rod, this can be provided with additional outlet openings over its length.
  • the check valve according to the known principle of a bicycle valve should have at least one opening in the anchor rod, which is sealed off from the inflation space by a flexible sleeve.
  • a flexible sleeve In order to achieve a faster blowing effect and thus filling the blowing space, it has proven to be advantageous to provide a plurality of openings in the anchor rod distributed over the circumference which are covered by a common sleeve.
  • the injection tube attached in this way provides an injection anchor that can be approved as an expansion part with a defined support force.
  • the injection tube is made of simple steel and provided with a cut thread as an effective injection tube, which is not approved as an anchor, contains an anchor-comparable effect and thus represents an inexpensive removal agent with a high expansion effect.
  • the particular advantage of the anchor rod according to the invention is that, in addition to a reliable injection with a secure borehole seal, a high level of compensation for the rock is achieved by simultaneous anchoring against high injection pressures. In contrast to the injection alone, a predictable load capacity is introduced into the mountains, which depends on the load capacity of the injection tube. Depends on the anchor tube and results from the stiffening of the anchored layers and the dowelling of broken layers on solid layers.
  • the injection tube designed as an anchor rod 1 is shown in section.
  • the anchor rod 1 has a rolled-up thread 2 at the end facing the mouth of the borehole and a check valve 4 in the injection head 3.
  • the embodiment shown in the figures is provided at the end facing the deepest hole with a rupture disk 5 screwed onto a thread.
  • a borehole closure 6 is placed on the anchor rod 1, which essentially consists of an elastic hose section 8, which is connected to the ends opposite the anchor rod 1 is locked in position by covers 7.
  • the blowing space 9 is formed between the anchor rod and the hose section 8.
  • a check valve 10 is provided, which is essentially formed from at least one opening 11 in the anchor rod 1, which is covered within a recess 13 by a flexible sleeve 12.
  • the anchor rod 1 is provided to introduce four openings 11 distributed over the circumference in the anchor rod 1, each of which is covered by a common sleeve 12.
  • the borehole wall 15 is also indicated, against which the inflated hose section 8 bears for the complete sealing of the borehole.
EP90630104A 1989-05-18 1990-05-10 Injektionsrohr mit Ankerwirkung Expired - Lifetime EP0398838B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90630104T ATE98742T1 (de) 1989-05-18 1990-05-10 Injektionsrohr mit ankerwirkung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8906126U 1989-05-18
DE8906126U DE8906126U1 (es) 1989-05-18 1989-05-18

Publications (2)

Publication Number Publication Date
EP0398838A1 EP0398838A1 (de) 1990-11-22
EP0398838B1 true EP0398838B1 (de) 1993-12-15

Family

ID=6839296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90630104A Expired - Lifetime EP0398838B1 (de) 1989-05-18 1990-05-10 Injektionsrohr mit Ankerwirkung

Country Status (4)

Country Link
EP (1) EP0398838B1 (es)
AT (1) ATE98742T1 (es)
AU (1) AU628540B2 (es)
DE (2) DE8906126U1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206234A (zh) * 2013-01-30 2013-07-17 河北联合大学 逆止防突水注浆锚杆

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9004177U1 (es) * 1990-04-11 1990-06-28 Bergwerksverband Gmbh, 4300 Essen, De
DE9004176U1 (es) * 1990-04-11 1990-06-28 Bergwerksverband Gmbh, 4300 Essen, De
DE4128154C2 (de) * 1991-07-02 1994-06-16 Gd Anker Gmbh & Co Kg Injektionsrohr und Verfahren zum Setzen eines Gebirgsankers
EP0546128B1 (de) * 1991-07-02 1995-08-30 Gd-Anker Gmbh Injektionsrohr und verfahren zum setzen eines gebirgsankers
DE4209802C1 (en) * 1992-03-26 1993-08-26 Schmidt, Kranz & Co Gmbh Zweigniederlassung Zorge, 3421 Zorge, De Rock or masonry sealant injection tube - has bursting disc retained by securing ring in counterbored and externally conical discharge end
DE4242106C2 (de) * 1992-12-14 2003-11-13 Ischebeck Friedrich Gmbh Blähpacker für Injektionsanker, Injektionsbohranker oder dergleichen zum Verschließen von Löchern, insbesondere Erdbohrlöchern
DE10135159C1 (de) * 2001-07-19 2002-10-31 Schmidt & Co Gmbh Kranz Bohrlochverschluss
DE10236257A1 (de) * 2002-08-09 2004-02-26 Stump Spezialtiefbau Gmbh Düsenstrahlvorrichtung
CA2508371C (en) * 2002-12-03 2012-01-31 Weise + Strattner Gmbh Device and method for fastening facade plates
DE202007008940U1 (de) * 2007-06-25 2007-10-11 Minova Carbotech Gmbh Bohrlochverschluss mit integriertem Mischer
CH702595B1 (de) * 2010-01-28 2018-09-14 Kuechler Technik Ag Bohrankerdichtung und Selbstbohranker mit einer solchen Bohrankerdichtung.
CA2762730C (en) * 2011-12-23 2013-04-23 Conrad Petrowsky Combination burst-disc subassembly for horizontal and vertical well completions
CN104196486B (zh) * 2014-09-09 2016-08-24 中国石油化工股份有限公司 一种负压坐封封隔器
CN105221171A (zh) * 2015-10-23 2016-01-06 于守东 一种防滑自封孔式注浆锚索
JP6430358B2 (ja) * 2015-12-09 2018-11-28 株式会社カテックス 注入式ロックボルト、及びそれを用いた地山の補強工事の施工方法
US11828132B2 (en) 2022-02-28 2023-11-28 Saudi Arabian Oil Company Inflatable bridge plug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903137C3 (de) * 1979-01-27 1982-02-18 Bergwerksverband Gmbh, 4300 Essen Rohrförmiger verlorener Bohrlochverschluß
NO159201C (no) * 1980-09-08 1988-12-07 Atlas Copco Ab Fremgangsmaate ved bolting i fjell og kombinert ekspansjonsbolt og installasjonsanordning for samme.
US4461600A (en) * 1981-03-24 1984-07-24 Willich Gmbh & Co. Method of and device for solidifying rock in mine tunnels and the like
DE3138610C2 (de) * 1981-09-29 1984-10-18 Bergwerksverband Gmbh, 4300 Essen Einrichtung zur haltbaren Befestigung von Gegenständen in Bohrlöchern
DD235161A3 (de) * 1984-08-14 1986-04-30 Sdag Wismut Vorrichtung zum einbringen von mehrkomponentengemischen in technische bohrungen
CA1286129C (en) * 1986-06-24 1991-07-16 Inco Limited Hardened material supported rock bolt and apparatus for installing same
DE3802286A1 (de) * 1988-01-27 1989-08-03 Willich F Gmbh & Co Bohrlochverschluss mit doppeltem kolben

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206234A (zh) * 2013-01-30 2013-07-17 河北联合大学 逆止防突水注浆锚杆

Also Published As

Publication number Publication date
EP0398838A1 (de) 1990-11-22
AU628540B2 (en) 1992-09-17
ATE98742T1 (de) 1994-01-15
DE8906126U1 (es) 1990-04-19
AU5466290A (en) 1990-11-22
DE59003840D1 (de) 1994-01-27

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