EP1235961B1 - Method and arrangement for concreting vertical shafts - Google Patents

Method and arrangement for concreting vertical shafts Download PDF

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Publication number
EP1235961B1
EP1235961B1 EP00989859A EP00989859A EP1235961B1 EP 1235961 B1 EP1235961 B1 EP 1235961B1 EP 00989859 A EP00989859 A EP 00989859A EP 00989859 A EP00989859 A EP 00989859A EP 1235961 B1 EP1235961 B1 EP 1235961B1
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EP
European Patent Office
Prior art keywords
downpipe
concrete
cylinder
outlet
concrete column
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
EP00989859A
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German (de)
French (fr)
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EP1235961A1 (en
Inventor
Rolf Dose
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Putzmeister Concrete Pumps GmbH
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Putzmeister AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/90—Slurry pumps, e.g. concrete

Definitions

  • the invention relates to a method and an arrangement for concreting deep, vertical shafts, in which concrete from above ground in one concrete column located in a downpipe to a lower-lying application point is promoted.
  • the object of the invention is a method and an arrangement for concreting deep vertical shafts develop, with which a reliable and segregation-free transport of the Concrete to the application points guaranteed with the greatest possible operational reliability is.
  • the solution according to the invention is based on the procedural idea that the concrete in portions at the outlet end of the downpipe taken from the advancing concrete column, from the concrete column separated and depressurized and then the application site is fed.
  • the invention proposed that the concrete column on the output side End of the downpipe into a cylinder and there from a below Supported enlargement of the cylinder volume retreating pistons is that the cylinder content after reaching a piston end position of the remaining concrete column separated and then preferably with feed the piston out of the cylinder directly or indirectly to the application site is carried out.
  • the concrete becomes useful passed into a buffer tank and fed from there to the application site.
  • the depressurized concrete is advantageously over another Fall distance that is shorter than the concrete column and for example by a Distribution hose can be formed, fed to the application site.
  • the advancing Concrete column at the outlet end of the downpipe in the upwards redirected cylinder pointing downwards, while that of the Portions of concrete separated from the cylinder are discharged downwards from the cylinder become.
  • Another preferred embodiment of the invention provides that the advancing concrete column alternately at the outlet end of the downpipe is introduced into two separate cylinders and of these in push-pull portioned and depressurized, if necessary, via the buffer tank to the application site is carried out.
  • the downpipe must be filled with concrete so that it does not Segregation and no destruction along the drop line.
  • the downpipe is first filled with fill water before the concrete with the interposition of at least one sealing element in the downpipe is initiated.
  • the filling water then obtained on the outlet side becomes via and connected to the lower end of the downpipe communicating return pipe preferably smaller diameter below the impact of the tracked concrete column promoted upwards or discarded into the shaft.
  • the decompression pump has a pipe switch that can be connected to the downpipe on the inlet side on the outlet side alternately pressure-tight on one of two cylinders can be connected, of which the other cylinder is preferably via a common buffer tank opens into an outlet line, in pistons that can be pushed back and forth in push-pull fashion are.
  • the pipe switch is in the buffer tank under the open cylinders arranged and has on the outlet side towards the cylinder openings up.
  • For maintenance work on the decompression pump to be able to perform without the concrete column from the To remove the downpipe is in the downpipe in front of the decompression pump Gate valve arranged.
  • the return line serves to do this, fill in the water filled with concrete before filling the downpipe the impact of the advancing concrete column upwards from the shaft lead out.
  • the water is returned according to the principle of communicating tubes.
  • the invention further relates to a decompression pump for delivery of pressure-loaded thick materials, in particular concrete, to an application point according to claim 15, in particular for use in a concreting arrangement
  • the decompression pump has according to the invention a pipe switch loaded on one side with the pressure-loaded thick material on the outlet side alternately pressure-tight on one of two cylinders can be connected, of which the other cylinder is preferably via a common buffer tank opens into an outlet, and wherein in the cylinders are arranged two pistons that can be pushed back and forth in push-pull are.
  • the buffer container expediently has a base, preferably downward-facing outlet connection to which a distributor hose can be connected. It is also useful with a pressure-tight seal Provide maintenance opening.
  • the arrangement shown in the drawing is for concreting the shaft walls 10 of a shaft 12 with a depth of e.g. 500 m and more determined.
  • the concrete is made from the various platforms 14 that pass over a ladder 16 can be reached with a manually guided distribution hose 18 in free fall in the pre-assembled formwork 20 on the floor 22 are closed.
  • Spreading the concrete over the Distribution hose 18 is through the outlet 24 of a decompression pump 26, which is connected at its inlet 28 to a downpipe 30.
  • the downpipe 30 essentially leads from the surface (upper edge 31 of the shaft 12) vertically down on one of the shaft walls 10 and is on the height of the lower edge of the decompression pump 26 bent towards this.
  • the downpipe 30 is on the inlet side via a filling pump 32 with concrete loaded so that a concrete column forms in the downpipe 30, which at the end of the downpipe 30 under high pressure at the inlet 28 of the decompression pump pending.
  • the decompression pump 26 comprises a pipe switch designed as an S-pipe 34, which is in a buffer container 36 by one to the inlet opening 28 concentric vertical axis 38 with the aid of a hydraulic drive 40 is pivotally mounted.
  • a pipe switch designed as an S-pipe 34
  • At the top of the buffer tank 36 are two Delivery cylinder 42 arranged vertically, with their downward facing Openings 44 open into the buffer container 36 and their not shown Pistons with the help of a hydraulic cylinder 46, the pistons on the rod side through a water box 47, can be driven in push-pull.
  • the Pipe switch 34 is synchronized with the hydraulic cylinders via the hydraulic drive 40 46 driven so that the outlet opening 48 of the pipe switch 34th alternately gets in front of one of the cylinder openings while the respective another cylinder opening 44 points freely down into the buffer container.
  • the Hydraulic unit 54 for feeding the hydraulic drive 40 and the hydraulic cylinders 46 is located on one of the platforms 14 near the decompression pump 26.
  • the pipe switch 34 is in each case with the downward Piston in one of the cylinders 42 in front of the relevant cylinder opening 44 switched so that the pressurized concrete column through supports the diverter valve 34 against the piston in question.
  • the switch is switched to the other cylinder, the piston of which is in its lower end position.
  • the first cylinder becomes Buffer tank 36 opened so that the portion of concrete therein pressure-free via the atmospheric pressure prevailing in the buffer tank 36 is placed and when the piston in question is fed into the buffer tank 36 arrives. From the buffer tank 36, the concrete falls through the outlet 24 in the distribution hose 18 and from there in free fall Application point directed in the formwork 20.
  • the buffer container 36 is provided with a side cover 50 which is closed Maintenance purposes can be opened.
  • the downpipe 30 is expedient beforehand locked by a slider 52 to free the diverter 34 put.
  • the system is cleaned using a water column, which is from the surface from with the interposition of a cleaning pig with the filling pump switched off 32 is introduced into the downpipe. About 20 m water column are sufficient, gradually as the decompression pump 26 continues to operate up into the buffer tank 36.
  • the invention relates to a method and an arrangement for concreting vertical shafts with a depth of e.g. 500 m and more.
  • the concrete is in there over a a downpipe 30 located concrete column to a lower application point 20 promoted.
  • For demixing and non-destructive concreting To ensure the concrete is at the outlet end of the downpipe 30 removed in portions from the advancing concrete column, from separated from the concrete column and depressurized and then the application site fed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Reciprocating Pumps (AREA)
  • Treatment Of Sludge (AREA)

Abstract

A method and an arrangement for concretizing vertical shafts having a depth of e.g. 500 m or more. The concrete is conveyed to a low-lying application site (20) in the shaft by a concrete column that is situated in a downpipe (30). Delivery of concrete is guaranteed without separation (demixing) or clogging of concrete. The concrete is removed in portions of from the succeeding concrete column at the output end of the downpipe (30), is separated from the concrete column, is depressurized and it subsequently conveyed to the application site.

Description

Die Erfindung betrifft ein Verfahren und eine Anordnung zum Betonieren von tiefen, vertikalen Schächten, bei welchem Beton von übertage über eine in einem Fallrohr befindliche Betonsäule zu einer tieferliegenden Applikationsstelle gefördert wird.The invention relates to a method and an arrangement for concreting deep, vertical shafts, in which concrete from above ground in one concrete column located in a downpipe to a lower-lying application point is promoted.

Die im Bergbau vorkommenden Schächte, die mit dem erfindungsgemäßen Verfahren betoniert werden sollen, haben eine Tiefe von beispielsweise 500 m und mehr. Wenn der Beton in dem Fallrohr unkontrolliert abstürzt, besteht die Gefahr einer Entmischung und einer Stopferbildung. Dies gilt vor allem auch dann, wenn innerhalb des Fallrohrs Umlenkungen vorgesehen sind. Die rein gravimetrische Ausbringung des Betons ist bei so tiefen Schächten mit einem hohen Verschleiß verbunden, selbst wenn entlang der Fallstrecke mehrere Sperrschieber vorgesehen werden, die periodisch geschaltet werden. Im übrigen sind die zur Verfügung stehenden Sperrschieber wegen des hohen Schaltverschleißes durch den abrasiven Beton und der Vielzahl der notwendigen Schaltvorgänge für einen zuverlässigen Einsatz nicht verwendbar.The shafts occurring in mining, which with the invention Methods to be concreted have a depth of, for example 500 m and more. If the concrete in the downpipe crashes out of control, there is a risk of segregation and blockage formation. This applies before especially when deflections are provided within the downpipe are. The purely gravimetric application of the concrete is at such deep Wells associated with high wear, even if along the Fall distance several gate valves are provided, which are switched periodically become. Otherwise, the available gate valves are available because of the high switching wear caused by the abrasive concrete and A multitude of switching operations required for reliable use not useable.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine Anordnung zum Betonieren von tiefen, vertikalen Schächten zu entwickeln, womit ein zuverlässiger und entmischungsfreier Transport des Betons zu den Applikationsstellen bei größtmöglicher Betriebssicherheit gewährleistet ist.Proceeding from this, the object of the invention is a method and an arrangement for concreting deep vertical shafts develop, with which a reliable and segregation-free transport of the Concrete to the application points guaranteed with the greatest possible operational reliability is.

Ausgehend vom jeweiligen Oberbegriffs der Ansprüche 1, 7 und 15, die sich auf die DE-A-1 074 495 stützen, wird diese Aufgabe durch die Merkmale dieser Ansprüche gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.Based on the respective generic term of the claims 1, 7 and 15, which are based on DE-A-1 074 495, this task is characterized by the characteristics of this Claims resolved. Advantageous configurations and further developments of the invention result from the dependent Claims.

Der erfindungsgemäßen Lösung liegt der verfahrensmäßige Gedanke zugrunde, daß der Beton am ausgangsseitigen Ende des Fallrohrs portionsweise aus der nachrückenden Betonsäule entnommen, von der Betonsäule abgetrennt und dabei drucklos gestellt und sodann der Applikationsstelle zugeführt wird. Um dies zu erreichen, wird gemäß einer bevorzugten Ausgestaltung der Erfindung vorgeschlagen, daß die Betonsäule am ausgangsseitigen Ende des Fallrohrs in einen Zylinder geleitet und dort von einem unter Vergrößerung des Zylindervolumens zurückweichenden Kolben abgestützt wird, daß der Zylinderinhalt nach Erreichen einer Kolbenendlage von der übrigen Betonsäule abgetrennt und danach vorzugsweise unter Vorschub des Kolbens aus dem Zylinder unmittelbar oder mittelbar zur Applikationsstelle ausgetragen wird. Beim mittelbaren Austrag wird der Beton zweckmäßig in einen Pufferbehälter geleitet und von dort der Applikationsstelle zugeführt. Der drucklos gestellte Beton wird vorteilhafterweise über eine weitere Fallstrecke, die kürzer als die Betonsäule ist und beispielsweise durch einen Verteilerschlauch gebildet sein kann, der Applikationsstelle zugeleitet.The solution according to the invention is based on the procedural idea that the concrete in portions at the outlet end of the downpipe taken from the advancing concrete column, from the concrete column separated and depressurized and then the application site is fed. To achieve this, according to a preferred embodiment the invention proposed that the concrete column on the output side End of the downpipe into a cylinder and there from a below Supported enlargement of the cylinder volume retreating pistons is that the cylinder content after reaching a piston end position of the remaining concrete column separated and then preferably with feed the piston out of the cylinder directly or indirectly to the application site is carried out. In the case of indirect discharge, the concrete becomes useful passed into a buffer tank and fed from there to the application site. The depressurized concrete is advantageously over another Fall distance that is shorter than the concrete column and for example by a Distribution hose can be formed, fed to the application site.

Technisch gesehen handelt es sich bei der beschriebenen Zylinderanordnung um eine Dekompressionspumpe, die eingangsseitig mit der unter Druck stehenden nachrückenden Betonsäule beaufschlagt ist, in der der Beton portionsweise drucklos gestellt wird und sodann der Applikationsstelle zugeführt wird.Technically speaking, it is the cylinder arrangement described a decompression pump, which is connected on the inlet side to the lower one Pressure is applied to the advancing concrete column in which the The concrete is depressurized in portions and then the application site is fed.

Gemäß einer bevorzugten Ausgestaltung der Erfindung wird die nachrükkende Betonsäule am austrittsseitigen Ende des Fallrohrs in den nach oben weisenden, nach unten offenen Zylinder umgeleitet, während die von der Betonsäule abgetrennten Betonportionen vom Zylinder aus nach unten ausgetragen werden. According to a preferred embodiment of the invention, the advancing Concrete column at the outlet end of the downpipe in the upwards redirected cylinder pointing downwards, while that of the Portions of concrete separated from the cylinder are discharged downwards from the cylinder become.

Eine weitere bevorzugte Ausgestaltung der Erfindung sieht vor, daß die nachrückende Betonsäule am austrittsseitigen Ende des Fallrohrs abwechselnd in zwei getrennte Zylinder eingeleitet wird und von diesen im Gegentakt portioniert und drucklos gegebenenfalls über den Pufferbehälter zur Applikationsstelle ausgetragen wird.Another preferred embodiment of the invention provides that the advancing concrete column alternately at the outlet end of the downpipe is introduced into two separate cylinders and of these in push-pull portioned and depressurized, if necessary, via the buffer tank to the application site is carried out.

Anfänglich muß das Fallrohr so mit Beton gefüllt werden, daß es zu keiner Entmischung und zu keiner Zerstörung entlang der Fallstrecke kommt. Um dies zu erreichen, wird das Fallrohr zunächst mit Füllwasser gefüllt, bevor der Beton unter Zwischenlage mindestens eines Dichtelements in das Fallrohr eingeleitet wird. Das sodann austrittsseitig anfallende Füllwasser wird über ein am unteren Ende des Fallrohrs angeschlossenes und mit diesem kommunizierendes Rücklaufrohr vorzugsweise kleineren Durchmessers unter der Einwirkung der nachgeführten Betonsäule nach oben gefördert oder in den Schacht hinein verworfen.Initially, the downpipe must be filled with concrete so that it does not Segregation and no destruction along the drop line. Around To achieve this, the downpipe is first filled with fill water before the concrete with the interposition of at least one sealing element in the downpipe is initiated. The filling water then obtained on the outlet side becomes via and connected to the lower end of the downpipe communicating return pipe preferably smaller diameter below the impact of the tracked concrete column promoted upwards or discarded into the shaft.

Zur Durchführung des erfindungsgemäßen Verfahrens ist eine Anordnung zum Betonieren von tiefen, vertikalen Schächten gemäß dem Anspruch 7 vorgesehen, die eine übertage angeordnete Füllpumpe und ein an die Füllpumpe angeschlossenes Fallrohr aufweist, wobei das austrittsseitige Ende des Fallrohrs an eine druckdichte Dekompressionspumpe anschließbar ist, deren Auslaß mit der Applikationsstelle verbindbar ist. Vorteilhafterweise ist an den Auslaß ein zur Applikationsstelle führender, von Hand bewegbarer Verteilerschlauch anschließbar.There is an arrangement for carrying out the method according to the invention provided for concreting deep, vertical shafts according to claim 7, the one Filling pump arranged above ground and one connected to the filling pump Downpipe, wherein the outlet end of the downpipe to a pressure-tight decompression pump can be connected, the outlet of which Application point is connectable. Advantageously, a to the outlet Application point leading, manually movable distribution hose can be connected.

Gemäß einer bevorzugten Ausgestaltung der Erfindung weist die Dekompressionspumpe eine eintrittsseitig mit dem Fallrohr verbindbare Rohrweiche auf, die austrittsseitig abwechselnd an einen von zwei Zylindern druckdicht anschließbar ist, von denen der jeweils andere Zylinder vorzugsweise über einen gemeinsamen Pufferbehälter in eine Auslaßleitung mündet, wobei in den Zylindern im Gegentakt hin- und herverschiebbare Kolben angeordnet sind. Die Rohrweiche ist im Pufferbehälter unter den nach unten offenen Zylindern angeordnet und weist austrittsseitig in Richtung Zylinderöffnungen nach oben. Andererseits weist die beispielsweise als Verteilerschlauch ausgebildete Anschlußleitung von der Dekompressionspumpe aus nach unten, so daß der drucklos gestellte Beton unter der Einwirkung der Schwerkraft zur Applikationsstelle gefördert werden kann. Um Wartungsarbeiten an der Dekompressionspumpe ausführen zu können, ohne die Betonsäule aus dem Fallrohr zu entfernen, ist in dem Fallrohr vor der Dekompressionspumpe ein Sperrschieber angeordnet.According to a preferred embodiment of the invention, the decompression pump has a pipe switch that can be connected to the downpipe on the inlet side on the outlet side alternately pressure-tight on one of two cylinders can be connected, of which the other cylinder is preferably via a common buffer tank opens into an outlet line, in pistons that can be pushed back and forth in push-pull fashion are. The pipe switch is in the buffer tank under the open cylinders arranged and has on the outlet side towards the cylinder openings up. On the other hand, the one designed, for example, as a distribution hose Connecting line from the decompression pump downwards, so that the depressurized concrete under the influence of gravity Application center can be funded. For maintenance work on the decompression pump to be able to perform without the concrete column from the To remove the downpipe is in the downpipe in front of the decompression pump Gate valve arranged.

Weiter ist gemäß einer bevorzugten Ausgestaltung der Erfindung an der tiefsten Stelle des Fallrohrs vor der Dekompressionspumpe eine mit dem Fallrohr kommunizierende absperrbare Rücklaufleitung vorzugsweise mit kleinerem Querschnitt als das Fallrohr angeschlossen. Die Rücklaufleitung dient dazu, das vor dem Befüllen des Fallrohrs mit Beton eingefüllte Wasser unter der Einwirkung der nachrückenden Betonsäule nach oben aus dem Schacht herauszuführen. Die Wasserrückführung erfolgt dabei nach dem Prinzip der kommunizierenden Röhren.Furthermore, according to a preferred embodiment of the invention, the deepest Place the downpipe in front of the decompression pump with the downpipe communicating lockable return line preferably with a smaller one Cross section connected as the downpipe. The return line serves to do this, fill in the water filled with concrete before filling the downpipe the impact of the advancing concrete column upwards from the shaft lead out. The water is returned according to the principle of communicating tubes.

Die Erfindung bezieht sich femer auf eine Dekompressionspumpe zur Förderung von druckbelasteten Dickstoffen insbesondere von Beton zu einer Applikationsstelle gemäß dem Anspruch 15, insbesondere für den Einsatz in einer Betonieranordnung der vorbeschriebenen Art. Die Dekompressionspumpe weist erfindungsgemäß eine einseitig mit dem druckbelasteten Dickstoff beaufschlagte Rohrweiche auf, die austrittsseitig abwechselnd an einen von zwei Zylindern druckdicht anschließbar ist, von denen der jeweils andere Zylinder vorzugsweise über einen gemeinsamen Pufferbehälter in einen Auslaß mündet, und wobei in den Zylindern zwei in Gegentakt hin- und herverschiebbare Kolben angeordnet sind. Der Pufferbehälter weist zweckmäßig einen bodenseitigen, vorzugsweise nach unten weisenden Auslaßstutzen auf, an den ein Verteilerschlauch anschließbar ist. Weiter ist er zweckmäßig mit einer druckdicht verschließbaren Wartungsöffnung versehen.The invention further relates to a decompression pump for delivery of pressure-loaded thick materials, in particular concrete, to an application point according to claim 15, in particular for use in a concreting arrangement The type described above. The decompression pump has according to the invention a pipe switch loaded on one side with the pressure-loaded thick material on the outlet side alternately pressure-tight on one of two cylinders can be connected, of which the other cylinder is preferably via a common buffer tank opens into an outlet, and wherein in the cylinders are arranged two pistons that can be pushed back and forth in push-pull are. The buffer container expediently has a base, preferably downward-facing outlet connection to which a distributor hose can be connected. It is also useful with a pressure-tight seal Provide maintenance opening.

Mit vorstehenden Maßnahmen wird gewährleistet, daß die über die Betonsäule erzeugten Drücke in jeder Tiefe des Schachtes beherrscht werden können und der Betoneinbau problemlos erfolgt. Vorteilhafterweise ist zu diesem Zweck eine Steuerungseinrichtung zur synchronen Ansteuerung der Füllpumpe und der Dekompressionspumpe vorgesehen.The above measures ensure that the concrete column generated pressures can be controlled at any depth of the shaft can and the concrete is installed without any problems. It is advantageous to For this purpose, a control device for synchronous control of the Filling pump and the decompression pump provided.

Im folgenden wird die Erfindung anhand eines in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
einen Schnitt durch einen Schacht mit einer Schachtbetonieranlage;
Fig. 2
einen Ausschnitt X aus Fig. 1 in vergrößerter Darstellung;
Fig. 3
einen vergrößerten Ausschnitt aus Fig. 2 mit der Dekompressionspumpe in teilweise geschnittener Darstellung.
The invention is explained in more detail below with reference to an exemplary embodiment shown in the drawing in a schematic manner. Show it
Fig. 1
a section through a shaft with a manhole concreting system;
Fig. 2
a section X of Figure 1 in an enlarged view.
Fig. 3
an enlarged section of Fig. 2 with the decompression pump in a partially sectioned view.

Die in Zeichnung dargestellte Anordnung ist zum Betonieren der Schachtwände 10 eines Schachts 12 mit einer Tiefe von z.B. 500 m und mehr bestimmt. Der Beton wird von den verschiedenen Plattformen 14 aus, die über eine Leiter 16 erreichbar sind, mit einem von Hand geführten Verteilerschlauch 18 in freiem Fall in die vormontierten Schalungen 20, die am Boden 22 geschlossen sind, eingebracht. Das Ausbringen des Betons über den Verteilerschlauch 18 erfolgt durch den Auslaß 24 einer Dekompressionspumpe 26, die an ihrem Einlaß 28 an ein Fallrohr 30 angeschlossen ist. Das Fallrohr 30 führt von übertage (Oberkante 31 des Schachts 12) im wesentlichen senkrecht an einer der Schachtwände 10 nach unten und ist auf der Höhe der Unterkante der Dekompressionspumpe 26 zu dieser hin abgebogen. Das Fallrohr 30 wird einlaßseitig über eine Füllpumpe 32 mit Beton beschickt, so daß sich im Fallrohr 30 eine Betonsäule bildet, die am Ende des Fallrohrs 30 unter hohem Druck am Einlaß 28 der Dekompressionspumpe ansteht.The arrangement shown in the drawing is for concreting the shaft walls 10 of a shaft 12 with a depth of e.g. 500 m and more determined. The concrete is made from the various platforms 14 that pass over a ladder 16 can be reached with a manually guided distribution hose 18 in free fall in the pre-assembled formwork 20 on the floor 22 are closed. Spreading the concrete over the Distribution hose 18 is through the outlet 24 of a decompression pump 26, which is connected at its inlet 28 to a downpipe 30. The downpipe 30 essentially leads from the surface (upper edge 31 of the shaft 12) vertically down on one of the shaft walls 10 and is on the height of the lower edge of the decompression pump 26 bent towards this. The downpipe 30 is on the inlet side via a filling pump 32 with concrete loaded so that a concrete column forms in the downpipe 30, which at the end of the downpipe 30 under high pressure at the inlet 28 of the decompression pump pending.

Die Dekompressionspumpe 26 umfaßt eine als S-Rohr ausgebildete Rohrweiche 34, die in einem Pufferbehälter 36 um eine zur Einlaßöffnung 28 konzentrische vertikale Achse 38 mit Hilfe eines Hydraulikantriebs 40 schwenkbar gelagert ist. An der Oberseite des Pufferbehälters 36 sind zwei Förderzylinder 42 senkrecht angeordnet, die mit ihren nach unten weisenden Öffnungen 44 in den Pufferbehälter 36 münden und deren nicht dargestellte Kolben mit Hilfe jeweils eines Hydrozylinders 46, deren Kolben stangenseitig durch einen Wasserkasten 47 hindurch, laufen im Gegentakt antreibbar sind. Die Rohrweiche 34 wird über den Hydraulikantrieb 40 synchron mit den Hydrozylindem 46 angetrieben, so daß die Austrittsöffnung 48 der Rohrweiche 34 abwechselnd vor eine der Zylinderöffnungen gelangt, während die jeweils andere Zylinderöffnung 44 frei nach unten in den Pufferbehälter weist. Das Hydraulikaggregat 54 zur Speisung des Hydraulikantriebs 40 und der Hydrozylinder 46 befindet sich auf einer der Plattformen 14 in der Nähe der Dekompressionspumpe 26. Die Rohrweiche 34 wird jeweils bei nach unten gefahrenem Kolben in einem der Zylinder 42 vor die betreffende Zylinderöffnung 44 geschaltet, so daß sich die unter Druck stehende Betonsäule durch die Rohrweiche 34 hindurch gegen den betreffenden Kolben abstützt. Beim Rückzug des Kolbens dringt die nachrückende Betonsäule in den betreffenden Zylinder 42 ein, bis der Kolben seine obere Endlage erreicht. Sodann wird die Rohrweiche zum anderen Zylinder umgeschaltet, dessen Kolben in seiner unteren Endlage befindet. Gleichzeitig wird der erste Zylinder zum Pufferbehälter 36 hin geöffnet, so daß die darin befindliche Betonportion über den im Pufferbehälter 36 herrschenden Atmosphärendruck druckfrei gestellt wird und bei Vorschub des betreffenden Kolbens in den Pufferbehälter 36 gelangt. Vom Pufferbehälter 36 aus fällt der Beton durch den Auslaß 24 in den Verteilerschlauch 18 und wird von dort aus im freien Fall zur Applikationsstelle in den Schalungen 20 geleitet.The decompression pump 26 comprises a pipe switch designed as an S-pipe 34, which is in a buffer container 36 by one to the inlet opening 28 concentric vertical axis 38 with the aid of a hydraulic drive 40 is pivotally mounted. At the top of the buffer tank 36 are two Delivery cylinder 42 arranged vertically, with their downward facing Openings 44 open into the buffer container 36 and their not shown Pistons with the help of a hydraulic cylinder 46, the pistons on the rod side through a water box 47, can be driven in push-pull. The Pipe switch 34 is synchronized with the hydraulic cylinders via the hydraulic drive 40 46 driven so that the outlet opening 48 of the pipe switch 34th alternately gets in front of one of the cylinder openings while the respective another cylinder opening 44 points freely down into the buffer container. The Hydraulic unit 54 for feeding the hydraulic drive 40 and the hydraulic cylinders 46 is located on one of the platforms 14 near the decompression pump 26. The pipe switch 34 is in each case with the downward Piston in one of the cylinders 42 in front of the relevant cylinder opening 44 switched so that the pressurized concrete column through supports the diverter valve 34 against the piston in question. At the Withdrawal of the piston penetrates the advancing concrete column into the relevant one Cylinder 42 until the piston reaches its upper end position. thereupon the switch is switched to the other cylinder, the piston of which is in its lower end position. At the same time, the first cylinder becomes Buffer tank 36 opened so that the portion of concrete therein pressure-free via the atmospheric pressure prevailing in the buffer tank 36 is placed and when the piston in question is fed into the buffer tank 36 arrives. From the buffer tank 36, the concrete falls through the outlet 24 in the distribution hose 18 and from there in free fall Application point directed in the formwork 20.

Der Pufferbehälter 36 ist mit einem seitlichen Deckel 50 versehen, der zu Wartungszwecken geöffnet werden kann. Zuvor wird das Fallrohr 30 zweckmäßig durch einen Schieber 52 gesperrt, um die Rohrweiche 34 druckfrei zu stellen.The buffer container 36 is provided with a side cover 50 which is closed Maintenance purposes can be opened. The downpipe 30 is expedient beforehand locked by a slider 52 to free the diverter 34 put.

Um das Fallrohr 30 zerstörungsfrei befüllen zu können, ist zusätzlich eine Wasserleitung 56 vorgesehen, die im Bereich des Schiebers 52 und im unteren Bogenbereich des Fallrohrs 30 mit dem Fallrohr 30 kommuniziert. Zunächst wird bei geschlossenem Schieber 52 das Fallrohr 30 über die Wasserleitung 56 bis oben hin gefüllt. Sodann wird bei noch geschlossenem Schieber 52 über die Füllpumpe 32 unter Zwischenlage mindestens eines Dichtelements Beton in das Fallrohr 30 eingefüllt und das dort befindliche Wasser über die Leitung 56 nach dem Prinzip der kommunizierenden Röhren nach oben verdrängt. Sobald die Betonsäule in der Nähe des Schiebers 52 angelangt ist, wird dieser geöffnet, so daß das im unteren Bereich befindliche Wasser über die nachrückende Betonsäule über den unteren Abschnitt der Wasserleitung 56 verdrängt werden kann und die Betonsäule schließlich über den Pumpeneinlaß 28 in die Rohrweiche 34 eindringt. Hierzu muß dann die Dekompressionspumpe 26 über den Hydraulikantrieb 40 und die Hydrozylinder 46 in Gang gesetzt werden.In order to be able to fill the downpipe 30 non-destructively, there is also one Water pipe 56 is provided in the area of the slide 52 and in the lower Arc region of the downpipe 30 communicates with the downpipe 30. First with the slide 52 closed, the downpipe 30 via the water pipe 56 filled up to the top. Then with the still closed Slider 52 via the filling pump 32 with the interposition of at least one Sealing element concrete filled into the downpipe 30 and the one located there Water via line 56 according to the principle of communicating tubes displaced upwards. Once the concrete pillar near the slider 52 is reached, it is opened so that the one located in the lower area Water over the advancing concrete column over the lower section the water pipe 56 can be displaced and finally the concrete column penetrates into the diverter valve 34 via the pump inlet 28. To do this, then the decompression pump 26 via the hydraulic drive 40 and the hydraulic cylinders 46 can be started.

Die Reinigung der Anlage erfolgt über eine Wassersäule, die von übertage aus unter Zwischenlage eines Reinigungsmolches bei abgeschalteter Füllpumpe 32 in das Fallrohr eingebracht wird. Es reichen dazu etwa 20 m Wassersäule, die bei fortgesetztem Betrieb der Dekompressionspumpe 26 allmählich bis in den Pufferbehälter 36 hinein nachrückt. The system is cleaned using a water column, which is from the surface from with the interposition of a cleaning pig with the filling pump switched off 32 is introduced into the downpipe. About 20 m water column are sufficient, gradually as the decompression pump 26 continues to operate up into the buffer tank 36.

Zusammenfassend ist folgendes festzuhalten: Die Erfindung bezieht sich auf ein Verfahren und eine Anordnung zum Betonieren von vertikalen Schächten mit einer Tiefe von z.B. 500 m und mehr. Der Beton wird dort über eine in einem Fallrohr 30 befindliche Betonsäule zu einer tieferliegenden Applikationsstelle 20 gefördert. Um ein entmischungs- und zerstörungsfreies Betonieren zu gewährleisten, wird der Beton am ausgangsseitigen Ende des Fallrohrs 30 portionsweise aus der nachrückenden Betonsäule entnommen, von der Betonsäule abgetrennt und dabei drucklos gestellt und sodann der Applikationsstelle zugeführt.In summary, the following can be stated: The invention relates to a method and an arrangement for concreting vertical shafts with a depth of e.g. 500 m and more. The concrete is in there over a a downpipe 30 located concrete column to a lower application point 20 promoted. For demixing and non-destructive concreting To ensure the concrete is at the outlet end of the downpipe 30 removed in portions from the advancing concrete column, from separated from the concrete column and depressurized and then the application site fed.

Claims (17)

  1. Process for concretization of deep shafts, in which concrete is conveyed via a concrete column situated in a downpipe (30) to a deeper lying application site (20), wherein the concrete is removed in portions from the subsequent concrete column at the outlet end of the downpipe (30), separated from the concrete column, and thereby rendered free of pressure, and thereafter is conveyed to the application site (20), characterized in that the concrete column is conveyed at the outlet end of the downpipe (30) to a cylinder (42) and there is supported by a piston with enlargening of the cylinder volume with retreating piston, that the cylinder content after reaching a piston end position is separated from the remaining concrete column and thereafter preferably with advancing of the piston is discharged out of the cylinder (42) directly or indirectly to the application site (20).
  2. Process according to claim 1, characterized in that the concrete is conveyed out of the cylinder (42) into a buffer container (36) and from there is conveyed to the application site (20).
  3. Process according to one of claims 1 or 2, characterized in that the concrete rendered free of pressure is conveyed to the application site via a further drop section, which is shorter than the height of the concrete column.
  4. Process according to one of claims 1 through 3, characterized in that the following concrete column at the outlet end of the downpipe (30) is conveyed to an upwardly facing, downwardly open cylinder (42) and that the concrete portions separated from the concrete column are discharged downwards from the cylinder (42).
  5. Process according to one of claims 1 through 4, characterized in that the following concrete column at the outlet end of the downpipe (30) are introduced altematingly into two separate cylinders, are proportioned thereby in counterstroke and optionally via a buffer container (36) are discharged to the application site.
  6. Process according to one of claims 1 through 5, characterized in that the downpipe (30) is first filled with water, before the concrete is introduced with interposition of at least one sealing element in the downpipe (30) and that the fill water reaching the outlet side is returned upwards via a return pipe (56) communicating with the downpipe (30) or is discharged into the shaft.
  7. Device for concretization of deep shafts, with a fill pump (32) and a downpipe (30) connected to the fill pump, wherein the outlet end of the downpipe (30) is connectable to a pressure tight decompression pump (26), of which the outlet (24) is connectable with an application site (20), characterized in that the decompression pump (26) includes a pipe switch (34) of which the inlet side is connectable with the downpipe (30), of which the outlet side is alternatingly connectable to one of two cylinders (42) of which the respectively other cylinder (42) leads to the discharge (24) preferably via a common buffer container (36), wherein pistons moveable back and forth in counterstroke are provided in the cylinders (42).
  8. Device according to claim 7, characterized in that a distribution hose (18) is adapted to be connected to the outlet (24) leading to the application site (20).
  9. Device according to claim 7 or 8, characterized in that the pipe switch (34) is provided in the buffer container (36) below the downwardly open cylinders (42) and of which the outlet sides face upwards in the direction of the cylinder openings (44).
  10. Device according to one of claims 7 through 9, characterized in that the outlet (24) from the decompression pump (26) faces downwards.
  11. Device according to one of claims 7 through 10, characterized in that a slide gate (52) is provided in the downpipe (30) ahead of the decompression pump (26).
  12. Device according to one of claims 7 through 11, characterized in that the downpipe (30) is connected prior to the decompression pump (26) to a closeable return line (56) preferably with smaller cross-section than the downpipe (30).
  13. Device according to claim 12, characterized in that the return line (56) is directed to above ground.
  14. Device according to one of claims 7 through 13, characterized by a control device for the synchronized controlling of the fill pump (32) and the decompression pump (26).
  15. Decompression pump for conveyance of thick material under pressure, in particular concrete, to an application site (20), characterized by a pipe switch (34) with an inlet for receiving the thick material under pressure, of which the outlet side is alternatingly connectable to one of two cylinders (42) pressure tight, of which the respective other cylinder leads to an outlet (24) preferably via a common buffer container (36), wherein two cylinders operable in counterstroke are provided in the cylinders.
  16. Decompression pump according to claim 15, characterized in that the buffer container (36) includes a floor side, preferably downwardly directed outlet opening (24).
  17. Decompression pump according to claim 15 or 16, characterized in that the buffer container (36) includes a service or maintenance opening closeable pressure tight with a lid (50).
EP00989859A 1999-12-08 2000-11-16 Method and arrangement for concreting vertical shafts Expired - Lifetime EP1235961B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19959217A DE19959217A1 (en) 1999-12-08 1999-12-08 Method and arrangement for concreting vertical shafts
DE19959217 1999-12-08
PCT/EP2000/011329 WO2001042570A1 (en) 1999-12-08 2000-11-16 Method and arrangement for concreting vertical shafts

Publications (2)

Publication Number Publication Date
EP1235961A1 EP1235961A1 (en) 2002-09-04
EP1235961B1 true EP1235961B1 (en) 2003-10-01

Family

ID=7931883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00989859A Expired - Lifetime EP1235961B1 (en) 1999-12-08 2000-11-16 Method and arrangement for concreting vertical shafts

Country Status (6)

Country Link
US (1) US6776558B1 (en)
EP (1) EP1235961B1 (en)
AT (1) ATE251258T1 (en)
DE (2) DE19959217A1 (en)
ES (1) ES2206347T3 (en)
WO (1) WO2001042570A1 (en)

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* Cited by examiner, † Cited by third party
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DE1074495B (en) * 1960-01-28 Torkret GmbH Essen Method and device for the removal of concrete and the like to greater depths
US3663129A (en) * 1970-09-18 1972-05-16 Leon A Antosh Concrete pump
DE2153204C3 (en) * 1971-10-26 1980-03-27 Georg 8940 Memmingen Stetter Two-cylinder concrete pump with a concrete flow valve
US3746140A (en) * 1972-03-31 1973-07-17 R Schiffelbein Concrete delivery chute attachment
DE2632816C2 (en) * 1976-07-21 1982-07-29 Friedrich Wilh. Schwing Gmbh, 4690 Herne Sealing device for a double cylinder pump, especially for pumping concrete
US4031708A (en) * 1976-09-20 1977-06-28 Hanson Raymond A Slipforming method and apparatus for in situ lining of an upwardly open shaft with monolithic concrete
DE2757035C3 (en) * 1977-12-21 1980-09-11 Wibau Industrie Und Verwaltung Gmbh, 6466 Gruendau Concrete piston pump
US4198193A (en) * 1978-05-12 1980-04-15 Walters James F Automatic wear compensation apparatus for concrete pumping hopper apparatus
JPS5851110B2 (en) * 1979-11-05 1983-11-14 鹿島建設株式会社 Method and device for dropping concrete diagonally downward
GB8724262D0 (en) * 1987-10-15 1987-11-18 Caledonian Mining Co Ltd Lining bore holes
DE3813758A1 (en) * 1988-04-23 1989-11-02 Putzmeister Maschf MATERIAL TASK CONTAINER FOR HIGH PERFORMANCE PUMPS
DE3814824A1 (en) * 1988-05-02 1989-11-16 Putzmeister Maschf CONTROL ARRANGEMENT FOR A TWO-CYLINDER FUEL PUMP
DE19503986A1 (en) * 1995-02-07 1996-08-08 Hudelmaier Ulrike Method and device for conveying concrete or other thick materials
IT1294068B1 (en) * 1997-01-17 1999-03-22 Gianguido Ravellini PUMPING DEVICE, IN PARTICULAR FOR CEMENTITIOUS MATERIAL.
DE19957337A1 (en) * 1999-11-29 2001-05-31 Hudelmaier Joerg Pump for viscous material has charging pressure device separate from pump unit near suction line that actively causes compression of viscous material

Also Published As

Publication number Publication date
ATE251258T1 (en) 2003-10-15
ES2206347T3 (en) 2004-05-16
EP1235961A1 (en) 2002-09-04
WO2001042570A1 (en) 2001-06-14
DE50003946D1 (en) 2003-11-06
US6776558B1 (en) 2004-08-17
DE19959217A1 (en) 2001-06-13

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