EP1795700A1 - Shield tail sealing paste - Google Patents
Shield tail sealing paste Download PDFInfo
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- EP1795700A1 EP1795700A1 EP06024492A EP06024492A EP1795700A1 EP 1795700 A1 EP1795700 A1 EP 1795700A1 EP 06024492 A EP06024492 A EP 06024492A EP 06024492 A EP06024492 A EP 06024492A EP 1795700 A1 EP1795700 A1 EP 1795700A1
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- sealing paste
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- 238000007789 sealing Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000000440 bentonite Substances 0.000 claims abstract description 13
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 13
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 239000002557 mineral fiber Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims abstract description 4
- 229920002678 cellulose Polymers 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000003381 stabilizer Substances 0.000 claims abstract description 3
- 229920002472 Starch Polymers 0.000 claims abstract 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract 2
- 235000019698 starch Nutrition 0.000 claims abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 12
- 239000011707 mineral Substances 0.000 claims description 12
- 239000000565 sealant Substances 0.000 claims description 12
- 230000005641 tunneling Effects 0.000 claims description 9
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 6
- 239000008158 vegetable oil Substances 0.000 claims description 6
- 230000009974 thixotropic effect Effects 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims 1
- 229940105329 carboxymethylcellulose Drugs 0.000 claims 1
- 239000010773 plant oil Substances 0.000 abstract 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- 239000003925 fat Substances 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000008092 positive effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Definitions
- the invention relates to a Schildschwanzdichtungspaste on clay mineral-natural basis, which finds application in various industries, especially in tunneling during tunneling.
- shield machines In the construction of underground traffic routes, such as tunnels, it is common to use shield machines, which are formed with a cutting wheel, which is penetrated into the mountains. About corresponding discharge facilities are dissolved Rock, scree, sands and soil from the work area of the shield machine requested.
- the tunneling of the shield machine Tübbingieri be introduced as a temporary securing means in the tunnel in the shield tail. Due to the process remains between the mountains and the introduced tubbing elements a space that must be filled with grout (annular gap mortar). So that the grout does not escape at the free end of the segments, shield tail seals are provided in these areas, which are supported on the outer circumference of the tubbing wall and form hollow chambers between the tail of the shield and tubbing.
- Shield tail seals for shield tunneling machines are well known. That's how it describes DE 40 31 072 C2 a shield tail seal for Schildvortriebsmaschinen, which consists of at least two main bodies in the form of legs and made of an elastomeric material, which are anchored exchangeably on the shield shell. These run in the direction of the developed tunnel and are compared with the shield shell with an inclination angle ⁇ of 30 to 60 ° C, wherein the legs each have a sealing lip which are resiliently pressed against the outside of the tunnel lining and between the legs of the body space filling a pressure-stabilizing Provided substance in the form of a pasty mass and the pressure-stabilizing substance is a bentonite
- tailstock sealing grease In addition to the above-described design of a sheet-metal seated gasket, it is also known that instead of the legs, steel brush seals arranged several times in succession are used and the brush spaces are filled with filling compounds in the form of fats, the so-called tailstock sealing grease.
- These tailstock greases are based primarily on the raw material mineral oil, which is ecologically very problematic, is not available to a sufficient degree, is subject to price fluctuations and also comes into contact with the groundwater of the construction site during processing at the tunnel construction site.
- tailgate sealing fats which are based on synthetically produced fats and oils, which in turn have the raw material mineral oil as the basis and justify the above-mentioned disadvantages.
- these tailshaft sealing fats on mineral oil inherently adhere to serious disadvantages such as high production costs and environmentally hazardous properties, as they remain after introduction in the mountains and come with mountain water, grout, excavated soil and thus reach the groundwater.
- it requires high bottles- and disposal costs of empty containers and also fats are based on mineral oil flammable.
- the object of the invention is therefore to provide a shield tail sealing paste, with which an improved pressure gradation and associated improved sealing effect can be achieved.
- the tailstock sealant provided by the invention is an alternative product with comparable properties based on and using layered minerals.
- the solution presented here exploits the positive properties of layered minerals such as absolute environmental compatibility and good lubricating and sealing properties.
- fillers and additives which have a positive effect on the viscosity, pumpability, good adhesion to all surfaces, as well as resistance to water, salt water and to mechanical forces of the tailscale sealant are added to the tailscale sealant paste.
- a bentonite is used as the layer mineral, which, taking into account certain percentages by weight, is mixed with water, fillers in the form of fibers and compounds, and after the mixing process an end product in the form of an immediately usable shield tail sealing paste is available.
- the bentonite used in the Tail Seal Paste is so digested with water that the bentonite and thus the finished Tail Seal Paste no longer nachquellt, which has a positive effect on the introduction and the sealing of the spaces between the Tail Seal.
- the tailstock sealing paste according to the invention is characterized in particular by a mineral-fiber matrix, which is exclusively water-based and the mineral-fiber matrix consists of near-natural materials, has structural viscosity properties, which form the basis for a reliable sealing effect and good pumpability of the created Tail Seal paste.
- the specific gravity is only 1.05 kg / dm 3 , which results in a further advantage in terms of reducing consumption compared to known products.
- the fillers in the form of fibers used in the preparation of the inventive sealant dyestuff are fibers of natural fiber products, such as fibers of natural cellulose.
- the compounds used include stabilizers that prune the mineral-fiber matrix and thus prevent the extraction of the bentonite from the matrix under high water pressures and / or high mechanical stresses.
- Gefriechutzsch can be used in the compounds, this in an alternative application and taking into account the conditions on site during tunnel construction.
- the tailseal paste is added to a vegetable oil, especially when the shield tunneling has to take place in a water-rich earth area.
- a tailscale sealant paste according to the present invention consists of a layered mineral, a bentonite, water, fillers, compounds and vegetable oils, bentonite in the range of 5 to 22 percent by weight, water in the range of 50 to 80 percent by weight, vegetable oils in the range of 0 to 10 Weight percent, natural fibers in the range of 5 to 48 percent by weight and compounds in the range of 0 to 18 percent by weight are used. It is also part of the invention that in addition to bentonite, other layer minerals are used, such as layered minerals based on clay mineral-natural structures.
- the inventive shielding gasket paste contains no toxic additives, is not toxic and combustible and contains no volatile or mineral oil-containing substances.
- the use of fibers and compounds ensures that a mineral-fiber matrix is built and created which, when used, forms the layered mineral, the bentonite is not rinsed out of the paste and / or pushed through the constituents the tailstock sealant this has a lower density compared to known products, which has both positive in the handling, in the production and consumption, but also in the processing on the spot.
- compounds in the form of CMC are used to form a tailgate sealant paste according to the invention.
- the value 220 refers to the stationary and the value 240 to the moving penetration, ie, the resting state and the moved state of the tested paste.
- the introduction of the shield tail sealant paste into the shield tail seal will now be explained with the aid of the attached drawing, which is a schematic representation of a shield tail seal for shield tunneling machines.
- the propulsion and thus the working direction of a Schildvattriebsmaschine are indicated by the arrow 9 and from the drawing also shows that the annular space 4 between the mountains 2 and the introduced tubbing 3 is filled with a filling compound.
- This filling compound is, for example, an annular gap mortar which, via the feed line 5, which passes through the shield tail 1 of the shield tunneling machine is guided, opens into the annular space 4, so that the supplied annular gap mortar can enter the annular space 4 and this pressure-tight filled.
- the Saheldschwanzdichtung 6 is provided between the shield tail 1 and the surface of the tubbings 3 and consists of Stahldrahtbüfsten that form the interstices 7 between the steel wire brushes of the shield tail seal 3.
- the Scunschwanzdichtungspaste is pressed by means of pumps and the supply line 8, which fills the gaps 7 and seals the annulus 4, so on the one hand no filling material and water escape from the annulus 4 and on the other hand no other substances, such as water, can penetrate.
- the inventive Schildschwanzdichtungspaste has a good pumpability and viscosity, also good adhesion to all surfaces and is resistant to water, minerals and mechanical forces.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
Die Erfindung betrifft eine Schildschwanzdichtungspaste auf tonmineralisch-naturlicher Grundlage, welche in verschiedenen Industriezweigen, insbesondere im Tunnelbau beim Tunnelvortrieb Anwendung findet.The invention relates to a Schildschwanzdichtungspaste on clay mineral-natural basis, which finds application in various industries, especially in tunneling during tunneling.
Beim Bau von unterirdischen Verkehrswegen, wie Tunnelbauten, ist es üblich, Schildmaschinen einzusetzen, die mit einem Schneidrad ausgebildet sind, mit dem in das Gebirge eingedrungen wird. Über entsprechende Abfördereinrichtungen werden das gelöste Gestein, Geröll, Sande und Erdreich aus dem Arbeitsbereich der Schildmaschine abgefordert. In kontinuierlicher Weise des Vortriebs der Schildmaschine werden im Schildschwanz Tübbingelemente als temporäres Sicherungsmittel in den Tunnel eingebracht. Prozessbedingt verbleibt zwischen dem Gebirge und den eingebrachten Tübbingelementen ein Freiraum, welcher mit Verpressmörtel (Ringspaltmörtel) verfüllt werden muss. Damit der Verpressmörtel nicht am freien Ende der Tübbinge austritt, sind in diesen Bereichen Schildschwanzdichtungen vorgesehen, die sich am äußeren Umfang der Tübbingwand abstützen und Hohlkammern zwischen Schildschwanz und Tübbing bilden.In the construction of underground traffic routes, such as tunnels, it is common to use shield machines, which are formed with a cutting wheel, which is penetrated into the mountains. About corresponding discharge facilities are dissolved Rock, scree, sands and soil from the work area of the shield machine requested. In a continuous manner, the tunneling of the shield machine Tübbingelemente be introduced as a temporary securing means in the tunnel in the shield tail. Due to the process remains between the mountains and the introduced tubbing elements a space that must be filled with grout (annular gap mortar). So that the grout does not escape at the free end of the segments, shield tail seals are provided in these areas, which are supported on the outer circumference of the tubbing wall and form hollow chambers between the tail of the shield and tubbing.
Schildschwanzdichtungen für Schildvortriebsmaschinen sind allgemein bekannt.
So beschreibt die
That's how it describes
Neben der oben beschriebenen Ausbildung einer Schildsehwanzdichtung ist auch bekannt, dass anstelle der Schenkel mehrfach hintereinander angeordnete Stahlbürstendichtungen zum Einsatz kommen und die Bürstenzwischenräume mit Füllmassen in Form von Fetten, dem so genannten Schildschwanzdichtungsfett ausgefüllt werden.
Diese Schildschwanzdichtungsfette basieren vorwiegend auf dem Rohstoff Mineralöl, welcher ökologisch sehr problematisch ist, nicht im ausreichenden Maße zur Verfügung steht, Preisschwankungen unterliegt und beim Verarbeiten auf der Tunnelbaustelle auch mit dem Grundwasser der Baustelle in Berührung kommt.In addition to the above-described design of a sheet-metal seated gasket, it is also known that instead of the legs, steel brush seals arranged several times in succession are used and the brush spaces are filled with filling compounds in the form of fats, the so-called tailstock sealing grease.
These tailstock greases are based primarily on the raw material mineral oil, which is ecologically very problematic, is not available to a sufficient degree, is subject to price fluctuations and also comes into contact with the groundwater of the construction site during processing at the tunnel construction site.
Bekannt sind ferner Schildschwanzdichtungsfette, welche auf synthetisch hergestellten Fetten und Ölen basieren, die wiederum den Rohstoff Mineralöl zur Grundlage haben und die oben genannten Nachteile begründen.
So haften diesen Schildschwanzdichtungsfetten auf Mineralölbasis naturgemäß gravierende Nachteile wie hohe Herstellungskosten und umweltgefährdende Eigenschaften an, da diese nach dem Einbringen im Gebirge verbleiben und mit Gebirgswasser, Verpressmörtel, Bodenaushub in Kontakt kommen und somit ins Grundwasser gelangen. Ferner bedarf es hoher Händlungs- und Entsorgungskosten der leeren Gebinde und ferner sind Fette auf Mineralölbasis brennbar.Also known are tailgate sealing fats, which are based on synthetically produced fats and oils, which in turn have the raw material mineral oil as the basis and justify the above-mentioned disadvantages.
Thus, these tailshaft sealing fats on mineral oil inherently adhere to serious disadvantages such as high production costs and environmentally hazardous properties, as they remain after introduction in the mountains and come with mountain water, grout, excavated soil and thus reach the groundwater. Furthermore, it requires high Handels- and disposal costs of empty containers and also fats are based on mineral oil flammable.
Aufgabe der Erfindung ist es daher, eine Schildschwanzdichtungspaste anzugeben, mit der eine verbesserte Druckabstufung und damit verbunden eine verbesserte Dichtwirkung erzielbar ist.The object of the invention is therefore to provide a shield tail sealing paste, with which an improved pressure gradation and associated improved sealing effect can be achieved.
Erfindungsgemäß wird diese Aufgabe mit den Merkmalen des Anspruches 1 gelöst.
Weitere vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.According to the invention, this object is achieved with the features of claim 1.
Further advantageous embodiments are specified in the subclaims.
Die nach der Erfindung geschaffene Schildschwanzdichtungspaste ist ein Alternativprodukt mit vergleichbaren Eigenschaften auf Basis und unter Verwendung von Schichtmineralien. Bei der vorgestellten Lösung werden die positiven Eigenschaften von Schichtmineralien wie absolute Umweltverträglichkeit und gute Schmier- und Dichtungseigenschaften genutzt. Neben dem Einsatz von Schichtmineralien werden der Schildschwanzdichtungspaste Füllstoffe sowie Zusätze zugegeben, welche positiv auf die Viskosität, die Pumpbarkeit, die guten Haftungseigenschaften zu allen Oberflächen sowie auf die Resistenz gegen Wasser, Salzwasser und gegen mechanische Kräfte der Schildschwanzdichtungspaste einwirken.The tailstock sealant provided by the invention is an alternative product with comparable properties based on and using layered minerals. The solution presented here exploits the positive properties of layered minerals such as absolute environmental compatibility and good lubricating and sealing properties. In addition to the use of layered minerals, fillers and additives which have a positive effect on the viscosity, pumpability, good adhesion to all surfaces, as well as resistance to water, salt water and to mechanical forces of the tailscale sealant are added to the tailscale sealant paste.
Gemäß der Erfindung wird als Schichtmineral ein Bentonit verwendet, welches unter Berücksichtigung bestimmter Gewichtsprozentanteile mit Wasser, Füllstoffen in Form von Fasern und Compounds, gemischt wird und nach dem Mischvorgang ein Endprodukt in Form einer sofort verwendbaren Schildschwanzdichtungspaste zur Verfügung steht, welches auf der Basis von Naturstoffen hergestellt ist und das in der Schildschwanzdichtungspaste eingesetzte Bentonit so mit Wasser aufgeschlossen ist, dass das Bentonit und somit die fertige Schildschwanzdichtungspaste nicht mehr nachquellt, was sich positiv auf das Einbringen und die Abdichtung der Zwischenräume zwischen den Schildschwanzdichtungen auswirkt. Dies auch damit begründet, dass das Bentonit im gequollenen Zustand eine hohe Gelfestigkeit besitzt, welche über längere Zeiträume beibehalten wird und so die guten Gleit- und Dichteigenschaften der erfindungsgemäßen Schildschwanzdichtungspaste erhalten und begründen.
Die erfindungsgemäße Schildschwanzdichtungspaste ist insbesondere gekennzeichnet durch eine Mineral-Faser-Matrix, diese ist ausschließend wasserbasierend und die Mineral-Faser-Matrix besteht aus naturnahen Stoffen, besitzt Strukturviskoseeigenschaften, die die Grundlage bilden für eine zuverlässige Dichtwirkung und eine gute Pumpfähigkeit der geschaffenen Schildschwanzdichtungspaste.
Gegenüber vergleichbaren ölbasierenden Produkten liegt die spezifische Dichte bei nur 1,05 kg/dm3, wodurch sich ein weiterer Vorteil hinsichtlich der Verbrauchsreduzierung gegenüber bekannten Produkten ergibt.According to the invention, a bentonite is used as the layer mineral, which, taking into account certain percentages by weight, is mixed with water, fillers in the form of fibers and compounds, and after the mixing process an end product in the form of an immediately usable shield tail sealing paste is available. which is made on the basis of natural products and the bentonite used in the Tail Seal Paste is so digested with water that the bentonite and thus the finished Tail Seal Paste no longer nachquellt, which has a positive effect on the introduction and the sealing of the spaces between the Tail Seal. This is also justified by the fact that the bentonite in the swollen state has a high gel strength, which is maintained over long periods and thus maintain and substantiate the good sliding and sealing properties of the inventive tailstock sealing paste.
The tailstock sealing paste according to the invention is characterized in particular by a mineral-fiber matrix, which is exclusively water-based and the mineral-fiber matrix consists of near-natural materials, has structural viscosity properties, which form the basis for a reliable sealing effect and good pumpability of the created Tail Seal paste.
Compared with comparable oil-based products, the specific gravity is only 1.05 kg / dm 3 , which results in a further advantage in terms of reducing consumption compared to known products.
Die bei der Herstellung der erfindungsgemäßen Schüdschwanzdichunigpaste zum Einsatz kommenden Füllstoffe in Form von Fasern sind Fasern natürlicher Faserprodukte, so Fasern natürlicher Zellulose.The fillers in the form of fibers used in the preparation of the inventive sealant dyestuff are fibers of natural fiber products, such as fibers of natural cellulose.
Die zum Einsatz kommenden Compounds beinhalten Stabilisatoren, die die Mineral-Faser-Matrix stutzen und somit das Herauslösen des Bentonits aus der Matrix unter starken Wasserdrücken und/oder hohen mechanischen Beanspruchungen verhindern. Ferner können in den Compounds auch Gefrieschutzmittel eingesetzt werden, dies in alternativer Anwendung und unter Beachtung der Gegebenheiten vor Ort beim Tunnelausbau.
Erfinderisch ist ferner, dass bevorzugterweise der Schildschwanzdichtungspaste ein pflanzliches Öl zugegeben wird, insbesondere dann, wenn der Schildvortrieb in einem wasserreichen Erdbereich erfolgen muss.The compounds used include stabilizers that prune the mineral-fiber matrix and thus prevent the extraction of the bentonite from the matrix under high water pressures and / or high mechanical stresses. In addition, Gefriechutzmittel can be used in the compounds, this in an alternative application and taking into account the conditions on site during tunnel construction.
It is also inventive that, preferably, the tailseal paste is added to a vegetable oil, especially when the shield tunneling has to take place in a water-rich earth area.
Eine Schildschwanzdichtungspaste nach der vorliegenden Erfindung besteht aus einem Schichtmineral, einem Bentonit, Wasser, Füllstoffen, Compounds und pflanzlichen Ölen, wobei Bentonit im Bereich von 5 bis 22 Gewichtsprozenten, Wasser im Bereich von 50 bis 80 Gewichtsprozenten, pflanzliche Öle im Bereich von 0 bis 10 Gewichtsprozenten, natürliche Fasern im Bereich von 5 bis 48 Gewichtsprozenten und Compounds im Bereich von 0 bis 18 Gewichtsprozenten zum Einsatz kommen.
Es gehört auch zur Erfindung, dass neben Bentonit auch andere Schichtmineralien einsetzbar sind, so beispielsweise Schichtroineralien auf Basis tonmineralisch-natürlicher Strukturen.A tailscale sealant paste according to the present invention consists of a layered mineral, a bentonite, water, fillers, compounds and vegetable oils, bentonite in the range of 5 to 22 percent by weight, water in the range of 50 to 80 percent by weight, vegetable oils in the range of 0 to 10 Weight percent, natural fibers in the range of 5 to 48 percent by weight and compounds in the range of 0 to 18 percent by weight are used.
It is also part of the invention that in addition to bentonite, other layer minerals are used, such as layered minerals based on clay mineral-natural structures.
Unter Anwendung der vorliegenden Erfindung ist es möglich, eine Schildschwanzdichtungspaste herzustellen, welche absolut umweltverträglich ist, welche in die Wassergefährdungsklasse - nicht wassergefährdend - einzuordnen ist, da die zum Einsatz kommenden Rohstoffe nahezu natürlichen Ursprungs sind und diese Schüdschwanzdichtungspaste ein thixotropes Verhalten aufweist, welches sich insbesondere auf die Pumpfähigkeit und Dichtfunktion der geschaffenen Paste auswirkt.Using the present invention, it is possible to produce a shield-tail sealing paste which is absolutely environmentally compatible, which is classified in the water hazard class - not hazardous to water - since the raw materials used are of almost natural origin and this sealant sealant has a thixotropic behavior, which in particular affects the pumpability and sealing function of the created paste.
Die erfindungsgemäße Schildsehwanzdichtungspaste enthält keine toxischen Additive, ist nicht giftig und brennbar und beinhaltet keine flüchtigen oder mineralölhaltigen Stoffe. Durch den Einsatz von Fasern und Compounds wird sichergestellt, dass eine Mineral-Faser-Matrix aufgebaut und geschaffen wird, welche bei ihrem Einsatz, herausgebildet als Schildschwanzdichtungspaste, das Schichtmineral, das Bentonit nicht aus der Paste ausgespült und/oder gedrückt wird und durch die Bestandteile der Schildschwanzdichtungsmasse diese eine geringere Dichte gegenüber bekannten Produkten aufweist, was sowohl positiv beim Händling, bei der Herstellung und beim Verbrauch wirkt, aber auch bei der Verarbeitung unmittelbar vor Ort.
In einer bevorzugten Ausführung werden zur Herausbildung einer erfindungsgetnaßen Schildschwanzdichtungspaste Compounds in Form von CMC (Carboxy-Merhyl-Cellulose) verwendet.The inventive shielding gasket paste contains no toxic additives, is not toxic and combustible and contains no volatile or mineral oil-containing substances. The use of fibers and compounds ensures that a mineral-fiber matrix is built and created which, when used, forms the layered mineral, the bentonite is not rinsed out of the paste and / or pushed through the constituents the tailstock sealant this has a lower density compared to known products, which has both positive in the handling, in the production and consumption, but also in the processing on the spot.
In a preferred embodiment, compounds in the form of CMC (carboxy-meryl-cellulose) are used to form a tailgate sealant paste according to the invention.
Eine nach der Erfindung hergestellte Schildschwanzdichtrmgspaste besteht beispielsweise aus
- Bentonit: 5 Gewichtsprozenten,
- Fasern: 5 Gewichtsprozenten,
- Wasser: 80 Gewichtsprozenten,
- pflanzlichen Ölen: 10 Gewichtsprozenten,
- Compounds: 0 Gewichtsprozenten.
- Bentonite: 5% by weight,
- Fibers: 5% by weight,
- Water: 80% by weight,
- vegetable oils: 10% by weight,
- Compounds: 0% by weight.
Alle Produktbestandteile werden in einem Nüschungsprozess verarbeitet, und im Ergebnis steht eine Schildschwanzdichtungspaste zur Verfügung steht, welche unmittelbar eingesetzt werden kann.All of the product ingredients are processed in a quenching process, and as a result, there is a tailgate sealant paste available which can be used immediately.
Untersuchungen und Versuche haben die oben beschriebenen Eigenschaften der Schildschwanzdichtungspaste bestätigt, welche auf der Grundlage internationaler Prüfmethoden und Prüfrichtlinien durchgeführt wurden.
Das Ergebnis der Untersuchungen und die Vorteile der neuen Schildschwanzdichtungspaste sind der nachfolgenden tabellarischen Auflistung zu entnehmen, zu der erklärenderweise ausgeführt wird, dass es sich bei den benannten Prüfmethoden um international anerkannte und gültige Normen handelt. Die Bezeichnung
- NF T ist eine französische Norm,
- ASTM ist eine amerikanische Norm,
- J ISA ist eine japanische Norm,
- Matsumura: Es handelt sich hier um einen Test, bei dem das Dichtverhalten in der Paste und an den Berührungsflächen Paste - Oberfläche simuliert wird.
The results of the tests and the advantages of the new Tail Seal Paste are shown in the following table, which explains why the named test methods are internationally recognized and valid standards. The name
- NF T is a French standard,
- ASTM is an American standard,
- J ISA is a Japanese standard,
- Matsumura: This is a test that simulates the sealing behavior in the paste and at the paste-surface contact surfaces.
Mit den angegebenen Werte von 220/240 zur Penetration der erfindungsgemäßen Schildschwanzdichtungspaste wird ausgeführt, dass sich der Wert 220 auf die unbewegte und der Wert 240 auf die bewegte Penetration bezieht, also zum einen auf den Ruhezustand und zum anderen des bewegten Zustandes der geprüften Paste.
Das Einbringen der Schildschwanzdichtungspaste in die Schildschwanzdichtung wird nachfolgend unter zur Hilfenahme der beigefügten Zeichnung, welche eine schematische Darstellung einer Schildschwanzdichtung für Schildvortriebsmaschinen darstellt, erläutert.With the given values of 220/240 for the penetration of the shield-tail sealing paste according to the invention, it is stated that the value 220 refers to the stationary and the value 240 to the moving penetration, ie, the resting state and the moved state of the tested paste.
The introduction of the shield tail sealant paste into the shield tail seal will now be explained with the aid of the attached drawing, which is a schematic representation of a shield tail seal for shield tunneling machines.
Der Vortrieb und somit die Arbeitsrichtung einer Schildvattriebsmaschine sind mit dem Pfeil 9 angegeben und aus der Zeichnung ergibt sich gleichfalls, dass der Ringraum 4 zwischen dem Gebirge 2 und den eingebrachten Tübbings 3 mit einer Verfüllmasse ausgefüllt ist. Bei dieser Verfüllmasse handelt es sich beispielsweise um einen Ringspaltmörtel, welcher über die Zuleitung 5, welche durch den Schildschwanz 1, der Schildvortriebsmaschine geführt ist, in den Ringraum 4 mündet, so dass der zugeleitete Ringspaltmörtel in den Ringraum 4 eintreten kann und diesen druckdicht verfüllt.
Die Sahildschwanzdichtung 6 ist zwischen dem Schildschwanz 1 und der Oberfläche der Tübbings 3 vorgesehen und besteht aus Stahldrahtbüfsten, die die Zwischenräume 7 zwischen den Stahldrahtbürsten der Schildschwanzdichtung 3 herausbilden. In diese Zwischenräume 7 wird mittels Pumpen und der Zuleitung 8 die Schilfschwanzdichtungspaste gedrückt, welche die Zwischenräume 7 ausfüllt und den Ringraum 4 abdichtet, damit einerseits kein Verfüllmaterial und Wasser aus dem Ringraum 4 austreten und andererseits keine anderen Stoffe, beispielsweise Wasser, eindringen können. Dies wird insbesondere dadurch erreicht, dass die erfindungemäße Schildschwanzdichtungspaste eine gute Pumpfähigkeit und Viskosität besitzt, gleichfalls auf allen Oberflächen gut haftet und resistent gegen Wasser, Mineralien und mechanische Kräfte ist.The propulsion and thus the working direction of a Schildvattriebsmaschine are indicated by the
The Saheldschwanzdichtung 6 is provided between the shield tail 1 and the surface of the
Claims (7)
die Grundstoffe der Mineral-Faser-Matrix in einem Mischungsverhältnis von
the basic materials of the mineral fiber matrix in a mixing ratio of
als Schichtmineral ein Bentonit zum Einsatz kommt.Tailstock sealing paste according to claim 1 and 2, characterized in that
as layer mineral a bentonite is used.
die Füllstoffe aus Fasern natürlicher Faserprodukte, vorzugsweise natürlicher Zellulose mit verzahnten Oberflächen bestehen, deren Faserlängen im Bereich von 0 bis 15 mm liegen, vorzugsweise 2 mm betragen.Tailstock sealing paste according to claim 1 and 2, characterized in that
the fillers consist of fibers of natural fiber products, preferably natural cellulose with toothed surfaces whose fiber lengths are in the range of 0 to 15 mm, preferably 2 mm.
in den Compounds Stabilisatoren, vorzugsweise Carboxy-Methyl-Cellulose, und/oder Stärken eingebunden sind.Schildschwan.zdichtungspaste according to claim 1 and 2, characterized in that
in the compounds stabilizers, preferably carboxy-methyl cellulose, and / or starches are involved.
in den Compounds Alkohole zum Einsatz kommen.Tailstock sealing paste according to one of the preceding claims 1 to 5, characterized in that
Alcohols are used in the compounds.
die Mineral-Faser-Matrix thixotrope Eigenschaften und eine gute Zementvorträglichkeit besitztTailstock sealing paste according to claim 1, characterized in that
the mineral-fiber matrix possesses thixotropic properties and good cementability
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102005056463 | 2005-11-26 |
Publications (1)
Publication Number | Publication Date |
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EP1795700A1 true EP1795700A1 (en) | 2007-06-13 |
Family
ID=37813618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP06024492A Withdrawn EP1795700A1 (en) | 2005-11-26 | 2006-11-27 | Shield tail sealing paste |
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EP (1) | EP1795700A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016098521A (en) * | 2014-11-19 | 2016-05-30 | Jxエネルギー株式会社 | Tail seal composition for shield machine |
CN107218050A (en) * | 2017-07-20 | 2017-09-29 | 中铁工程装备集团有限公司 | A kind of anti-card machine list shield TBM main machine structures and its anti-card machine method |
CN109060545A (en) * | 2018-08-24 | 2018-12-21 | 北京交通大学 | The Water Pressure Resistance device for dynamically detecting of tail seal grease of shield |
CN113956913A (en) * | 2021-10-29 | 2022-01-21 | 中铁建华南建设(广州)高科技产业有限公司 | Water-based shield tail sealing grease and preparation method and application thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933381A (en) * | 1982-08-17 | 1984-02-23 | Dai Ichi Kogyo Seiyaku Co Ltd | Anti-friction composition for shield excavation process |
EP0607053A1 (en) * | 1993-01-15 | 1994-07-20 | Oxford Brookes University | Improvements in and relating to sealing compositions |
EP0735237A1 (en) * | 1995-03-27 | 1996-10-02 | Nissan Chemical Industries Ltd. | Method for shield excavating soil layer |
EP0846842A1 (en) * | 1996-12-09 | 1998-06-10 | Wolff Walsrode Ag | Hydrocolloids and hydrocolloid mixtures as additives for underground construction eg tunnels construction |
-
2006
- 2006-11-27 EP EP06024492A patent/EP1795700A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933381A (en) * | 1982-08-17 | 1984-02-23 | Dai Ichi Kogyo Seiyaku Co Ltd | Anti-friction composition for shield excavation process |
EP0607053A1 (en) * | 1993-01-15 | 1994-07-20 | Oxford Brookes University | Improvements in and relating to sealing compositions |
EP0735237A1 (en) * | 1995-03-27 | 1996-10-02 | Nissan Chemical Industries Ltd. | Method for shield excavating soil layer |
EP0846842A1 (en) * | 1996-12-09 | 1998-06-10 | Wolff Walsrode Ag | Hydrocolloids and hydrocolloid mixtures as additives for underground construction eg tunnels construction |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016098521A (en) * | 2014-11-19 | 2016-05-30 | Jxエネルギー株式会社 | Tail seal composition for shield machine |
CN107218050A (en) * | 2017-07-20 | 2017-09-29 | 中铁工程装备集团有限公司 | A kind of anti-card machine list shield TBM main machine structures and its anti-card machine method |
CN109060545A (en) * | 2018-08-24 | 2018-12-21 | 北京交通大学 | The Water Pressure Resistance device for dynamically detecting of tail seal grease of shield |
CN113956913A (en) * | 2021-10-29 | 2022-01-21 | 中铁建华南建设(广州)高科技产业有限公司 | Water-based shield tail sealing grease and preparation method and application thereof |
CN113956913B (en) * | 2021-10-29 | 2022-07-26 | 中铁建华南建设(广州)高科技产业有限公司 | Water-based shield tail sealing grease and preparation method and application thereof |
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