EP2009228A2 - Garniture d' étanchéité avec mélangeur integré - Google Patents

Garniture d' étanchéité avec mélangeur integré Download PDF

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Publication number
EP2009228A2
EP2009228A2 EP08009060A EP08009060A EP2009228A2 EP 2009228 A2 EP2009228 A2 EP 2009228A2 EP 08009060 A EP08009060 A EP 08009060A EP 08009060 A EP08009060 A EP 08009060A EP 2009228 A2 EP2009228 A2 EP 2009228A2
Authority
EP
European Patent Office
Prior art keywords
static mixer
packer
tube
borehole
closure according
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.)
Withdrawn
Application number
EP08009060A
Other languages
German (de)
English (en)
Other versions
EP2009228A3 (fr
Inventor
Andreas Nawrath
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.)
Minova Carbotech GmbH
Original Assignee
Minova Carbotech 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 Minova Carbotech GmbH filed Critical Minova Carbotech GmbH
Publication of EP2009228A2 publication Critical patent/EP2009228A2/fr
Publication of EP2009228A3 publication Critical patent/EP2009228A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • 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
    • 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 invention relates to a borehole closure for use in to be solidified rock strata above and below ground, consisting of a packer tube with a comprehensive this inflatable body, which is pressed against the borehole wall formed on the packer tube, wherein the packer tube in the region of the inflatable radial bores, on the access side a check valve and on the opposite output side has a rupture disc.
  • Such borehole closures are used in underground mining and tunneling, but also overground to close a previously made wellbore to the atmosphere and then to impinge the mountains surrounding the borehole with the introduced solidification or adhesive material.
  • the borehole seal is inserted into the borehole and then pressurized with the high pressure two or more component mixture to set against the borehole wall.
  • two mutually reacting liquid plastics are introduced separately, which are then mixed intensively with one another in a so-called static mixer, then pressed into the inflatable packer and, after it has been set, through the latter into the remaining borehole. From this borehole, the components reacting with each other get into the cracks and bad to add them and thus solidify the mountains after curing of the components.
  • the operating team When omitting the static mixer, the operating team not only saves the subsequent cleaning of the static mixer, but the entire workflow is shortened and, above all, it can not be a problem between static mixer and the subsequent line or the borehole closure because there is not yet mixed conveyed in the Pipe is pending, so an early curing can not occur. It should be noted, however, that it is precisely because of the importance of the solidification effect, a proper and intensive mixing of the two or more plastic components is imperative. Since at the same time a sealing of the mountain layers takes place by the solidification, this procedure can not only lead to lack of bearing forces layers, but also to water leaks, which is particularly problematic.
  • the invention is therefore based on the object to provide a borehole closure, which ensures that only properly mixed adhesive components pass through the packer tube and pressed into the mountains.
  • a static mixer is used whose outer diameter with the inner diameter of the packer tube and the outer wall with the inner wall of the packer tube are dimensioned and shaped correspondingly and that at a distance from the rupture disc limiting the movement of the static mixer Lock is provided.
  • a borehole closure which can safely receive a static mixer in such a way that this static mixer also fully and safely fulfills its function.
  • the static mixer also advantageously ensures that already mixed plastic components are used to inflate the packer so that this material also settles in the cavity and then advantageously secures or even increases the effect of the packer or borehole closure.
  • it is in any case ensured that only correctly mixed components get into the borehole and into the mountain strata, because the borehole closure is absolutely necessary for this overall process and is therefore used by the operating crew in any case, so that if this includes the static mixer and in a convenient arrangement, compulsory mixing is guaranteed.
  • the barrier in front of the rupture disk ensures that the static mixer as such can not impair the effect of the rupture disk.
  • the packer tube is made of steel and the static mixer is a plastic product.
  • the insertion and accurate positioning of the static mixer in the packer tube is to be carried out optimally, in particular, when the inner diameter of the packer tube is 10-15 mm, preferably 12 mm, and the outer diameter of the static mixer is 9.5-14.75 mm, preferably 11.75 mm.
  • the static mixer does not have a continuous outer wall, but rather consists of a numerous walls having plastic body, so that insertion is particularly well and safely possible, if the proposed opening is relatively narrow for the total static mixer.
  • the barrier on the output side ensures that the static mixer can not reach the rupture disk, but is fixed beforehand.
  • the lock is a locking ring arranged in a groove formed in the inner wall of the packer tube. This locking ring leaves a sufficient passage cross-section for the components mixed with each other, but on the other hand ensures that the static mixer can not pass this point.
  • the advantage here is that the static mixer is held with the entire circumference of this locking ring.
  • the barrier must be functional until the rupture disc has responded and then the intermixed components leave this bottleneck in the direction of the borehole.
  • the barrier may be expedient for the barrier to be designed to resist a pressure which is set corresponding to that to be received by the rupture disk. This means that if the rupture disc at the predetermined pressure, ie after the filling and puffing is destroyed, the lock is also "washed away" because it no longer necessarily has to hold back the static mixer, while it remains in the borehole closure.
  • the static mixer forcibly leaves its initially occupied position to improve the mixing effect or to ensure what is achieved just by the fact that after the bursting of the rupture disk, the lock is no longer effective and the static mixer then can be moved by a few millimeters or centimeters.
  • the static mixer is moved within the packer tube only in the direction of the exit side by the components of the adhesive, but it may also be appropriate to prevent him from collapsing over the entire length, which is achieved according to the invention in that on the check valve receiving side of the packer tube an abutment is provided for the spring of the check valve, which is also designed to serve as a movement barrier for the static mixer.
  • the static mixer is also fixed at this end via the movement lock, so can not be compressed by the pressure of the upcoming two or more components, but always maintains its optimal length. This guarantee of the openings in the static mixer ensures a constant mixing effect in the static mixer.
  • the described movement lock is expediently a locking pin, which is designed to be static with the static mixer. If this locking pin is arranged accordingly, it is generally possible to dispense with the locking pin on the opposite side, that is to say in front of the rupture disk. However, it is safer if the space in front of the rupture disk is kept free in any case by providing the further blocking pin or the barrier at a distance therefrom.
  • An optimal flow of the component mixture is advantageously possible according to a further embodiment of the invention, when the rupture disk is arranged fixed between the pipe end and the inner ring of a connection sleeve, wherein the inner ring has a passage which is formed corresponding to the inner wall of the packer tube.
  • This inner ring thus does not represent an obstacle for the component mixture flowing through it. Instead, it is guided uniformly up to the connection sleeve after leaving the static mixer, in order then to be able to expand somewhat, which, however, is insignificant for the further functioning of the method. In any case, however, the uniform and safe mixing process is always guaranteed.
  • a further embodiment is that after which the static mixer is made in two parts, wherein the partition between the two mixer parts is provided and wherein a mixer part on the movement lock and the other mixer part on the locking pin or the lock is fixed.
  • the lock allows quasi opening or bursting of the rupture disk continued slipping of the static mixer, this moves to the seat of the former rupture disk, where it is then finally held.
  • the location where the radial bores are seated is thus expanded, so that there is a slightly lower pressure, resulting in that the radial bores remain absolutely tight, which is necessary to ensure that the entire borehole shutter remains secure in its position.
  • the packer tube has radial bores which can be closed by a flexible, embedded in the outer wall of the packer tube cover ring, wherein the radial bores are arranged off-center of the cover ring.
  • a cover ring is basically known, it is ensured by the specific, eccentric arrangement of the radial bores on the one hand and its arrangement within the outer wall of the packer tube on the other hand This cover ring is "easy" to open, but in any case closes at higher external pressure than internal pressure and precisely where its action to close the radial bores is absolutely necessary.
  • the barrier may be formed receiving only a limited pressure under certain circumstances, but this barrier is usually designed as a permanent lock, which is advantageously provided that the lock as to be mounted only with special tools and to be removed accordingly Locking pin is formed. This prevents a third party from removing the barrier for whatever reason, so that when the appropriate pressure is applied, the integrated static mixer sits down in front of the rupture disk, hindering its effect and otherwise causing disadvantages. The removal of the locking pin is just possible by authorized personnel.
  • the packer tube made of steel for the fixation of the static mixer is upset compressed.
  • a possibility of fixing the static mixer is also given for the execution in which the packer tube is made of steel. If, on the other hand, it is made of plastic, as it used to be, it is more convenient to fix it using the barrier.
  • Such well closures are used in different ways in underground mining and tunneling and in other areas, which also has the possibility to use them with both an anchor and as an injection lance system, which is possible in accordance with the invention in that a at the same time as an injection lance and anchor rod to be used anchor end equipped with a bursting disc and in the middle or front area with a Blähpacker, in which the static mixer is integrated and fixed.
  • the rupture disk is thus inserted into the tip region of the injection lance or the anchor rod, so that this area also fills with the then already solidified solidification material, to then after Inflate the inflatable immediately to be able to press the mixture in the mountains or in the drilling area. Since the mixture is in front of the rupture disk, the entire process must proceed relatively quickly, but this has the advantage that the pressure at which the rupture disk bursts, can be maintained exactly.
  • Another possibility of using the borehole closure is that in which the borehole closure itself is fixed in the borehole, wherein the inflation is carried out with the aid of a feed pipe. It is advantageous if, as provided according to the invention intensively mixed solidification material penetrates into the packer or borehole closure and inflates the inflatable body, because then with the curing of this material at the same time the tight fit of the borehole closure is guaranteed.
  • the packer tube and inflatable body upstream of a feed pipe in which a static mixer is integrated, wherein the existing plastic feed pipe is heat-treated at the same time the static mixer before use. About the heat treatment, d. H.
  • the feed tube and the static mixer is a unit, so that the pressed through high pressure solidification material can intimately mix and then penetrate into the packer tube and the inflatable body, and then destroy the rupture disc in queuing the corresponding predetermined pressure and in the Interior of the wellbore.
  • the feed pipe with the integrated static mixer can then be recovered and prepared for a next use. Since the hardening solidification material is only present in the mixed state after the static mixer, the static mixer can be easily cleaned and reused.
  • the static mixer can settle in the feed pipe because a feed pipe made of metal is compressed on both sides of the introduced static mixer. This allows the static mixer to be positioned exactly as it is is optimal for the further process and where, for example, the recovery of the static mixer is easier.
  • the static mixer can not dodge in both directions and thus optimally performs its function.
  • the invention is characterized in particular by the fact that a borehole closure is provided, which in any case ensures that only optimally mixed components of a desired mixture of components reach the region behind the borehole closure. This is the area that is no longer visible after the insertion and inflation of the borehole closure, but whose condition is extremely important for the effect of the entire work.
  • a forced mixer integrated into the borehole closure is a lost component, i. H.
  • it can not be used a second time after completion of the work, but it is a relatively inexpensive product that can be produced even more simply than before as a disposable product. Even if one wants to take these costs into account, the big advantage on the other hand remains that it is always ensured that only an optimally mixed component mixture is brought into the mountains.
  • the static mixer can even be recovered easily.
  • FIG. 1 1 shows a borehole closure 1 in cross section, wherein it is clear that a continuous packer tube 2 is encompassed by a inflatable body 3, wherein the clamping rings 4, 5 ensure that via the radial bores 6, 7 from the access side 11 of a two or more Component material is pressed into the cavity 9.
  • the check valve 12 is first of all opened by the ball is moved against the secured by the abutment 14 spring 13 so that the multi-component material can flow to the rupture disk 16.
  • this material is stopped or prevented from further flowing through, so that it can not reach the output side 15.
  • a cover ring 8 is arranged, which now opens due to the high pressure, so that the multi-component material initially flows through the radial bores 6, 7 in the cavity 9 and ensures that the inflatable body 3 inflates and against presses the borehole wall, not shown here.
  • One of the clamping rings 4, 5 is formed and positioned so that it allows a displacement of the inflatable body 3 on the packer tube 2 limited. If the cavity 9 filled sufficiently and the inflatable body 3 pressed close to the borehole wall, the pressure in the packer tube 2 increases again and the rupture disk 16 can no longer withstand the pressure, so that after rupture of the rupture disk 16 now the multi-component material flows into the borehole ,
  • the optimum mixing of the multi-component material is ensured by the static mixer 20, which is arranged inside the packer tube 2.
  • the inner diameter 17 and the inner wall 18 of the packer tube 2 and the outer diameter 21 and the outer wall 22 of the static mixer 20 are formed so that this static mixer 20 can be securely inserted into the packer tube 2.
  • FIG. 1 shows the insertion of the static mixer 20 in the packer tube 2 through the barrier 23.
  • FIG. 4 an embodiment of the lock 2 in the form of a locking ring 25 which is arranged in a groove 24 in the inner wall 18 of the packer tube 2.
  • connection sleeve 34 which is screwed onto the tube end 32 of the packer tube 2. Both have corresponding threads 31 for this purpose. Since a pipe is generally also to be screwed on from the other side, but at least to make this possible, this connection sleeve 34 is equipped with an inner ring 33 which restricts the movement here of the packer tube 2. In this case, the inner wall 18 of the packer tube 2 is formed so that it has the same passage 35 as the passage 35 of the inner ring 33.
  • This Training also ensures a precise fixing of the rupture disk 16, wherein here always a residual edge remains, which ensures that even if the locking pin 27 or the locking ring 25 to release the static mixer 20 is destructible, this static mixer 20, the inner ring 33 can not happen , He is here held in any case and thus ensures that the two or more components of the mixture are always safely mixed together before they leave the packer tube 2.
  • FIG. 5 Finally, another embodiment is shown in which it is provided that the static mixer 20 consists of two mixer parts 37 and 39, these being in the region of the partition 38 to each other.
  • the helices 40 which actually form the static mixer 20, give the static mixer 20 sufficient rigidity, so that, if necessary, a separate movement of the two mixer parts 37, 39 is possible.
  • FIG. 6 shows an anchor 50, which is also used as an injection tube and as an anchor.
  • the check valve is arranged in front of the borehole closure or the inflatable packer 53 and denoted by 51. This area has a mounting thread 52 on the outer wall. Behind the actual Blähpacker 53, the tube continues on, in which case the outer wall has an adhesive thread 54, which facilitates setting in the resin jacket, ie in itself around this rod hardening material. At the end of this rod, a rupture disk 55 is arranged, which is otherwise integrated into the borehole closure 1.
  • extension tube 56 ensures a coupling sleeve 57 that this tube can be easily connected to the armature 50 and the actual component having a mounting thread 52 thereto.
  • FIG. 8 shows a particular embodiment inasmuch as here the borehole closure 1 with the packer tube 2 and the inflatable body 3 and the Rupture disk 16 does not have the static mixer, but rather the feed pipe 60, which is upstream.
  • the radial bores 6, 7 are introduced into the trained as a steel tube packer tube 2, so that when exposed to the borehole closure with then already mixed component material this penetrate into the space between the outer wall of the packer tube 2 and 3 inflatable body and can press it to the borehole wall.
  • the check valve 12 ensures that the once penetrated into the borehole seal solidification material can not flow back again.
  • the spring 13 is defined by the abutment 14 so that the ball of the check valve 12 reliably prevents the return flow of the solidification material.
  • 34 ' is a connection sleeve referred to, which also ensures the determination of the rupture disk 16 at the same time.
  • the static mixer 20 is fixedly inserted, so that it can not be moved out of this position by the inflowing solidification material.
  • the position of the static mixer 20 in the feed pipe 60 can be determined according to the needs at a certain point of the feed pipe 60 by the upsets 61, 62, theoretically also close to the check valve 12th

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP08009060A 2007-06-25 2008-05-16 Garniture d' étanchéité avec mélangeur integré Withdrawn EP2009228A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202007008940U DE202007008940U1 (de) 2007-06-25 2007-06-25 Bohrlochverschluss mit integriertem Mischer

Publications (2)

Publication Number Publication Date
EP2009228A2 true EP2009228A2 (fr) 2008-12-31
EP2009228A3 EP2009228A3 (fr) 2010-07-28

Family

ID=38580475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08009060A Withdrawn EP2009228A3 (fr) 2007-06-25 2008-05-16 Garniture d' étanchéité avec mélangeur integré

Country Status (3)

Country Link
EP (1) EP2009228A3 (fr)
DE (1) DE202007008940U1 (fr)
UA (1) UA100839C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117794651A (zh) * 2021-08-04 2024-03-29 阿特拉斯柯普科工业技术(德国)有限公司 用于将至少双组分的粘性材料涂覆到工件上的设备和方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110439258A (zh) * 2019-04-15 2019-11-12 中国建筑第四工程局有限公司 一种一次性成型一体化锚杆及施工方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8006658U1 (de) * 1980-03-12 1980-06-26 Bwz Berg- Und Industrietechnik Gmbh, 4250 Bottrop Bohrlochabdichtungsvorrichtung
DE8906126U1 (de) * 1989-05-18 1990-04-19 Bergwerksverband Gmbh, 4300 Essen Injektionsrohr mit Ankerwirkung
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
DE10135159C1 (de) * 2001-07-19 2002-10-31 Schmidt & Co Gmbh Kranz Bohrlochverschluss
AUPR901601A0 (en) * 2001-11-23 2001-12-13 Celtite Pty Ltd Improvements in rock bolting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117794651A (zh) * 2021-08-04 2024-03-29 阿特拉斯柯普科工业技术(德国)有限公司 用于将至少双组分的粘性材料涂覆到工件上的设备和方法

Also Published As

Publication number Publication date
UA100839C2 (ru) 2013-02-11
EP2009228A3 (fr) 2010-07-28
DE202007008940U1 (de) 2007-10-11

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