EP1235961A1 - Method and arrangement for concreting vertical shafts - Google Patents
Method and arrangement for concreting vertical shaftsInfo
- Publication number
- EP1235961A1 EP1235961A1 EP00989859A EP00989859A EP1235961A1 EP 1235961 A1 EP1235961 A1 EP 1235961A1 EP 00989859 A EP00989859 A EP 00989859A EP 00989859 A EP00989859 A EP 00989859A EP 1235961 A1 EP1235961 A1 EP 1235961A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concrete
- downpipe
- outlet
- cylinder
- 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.)
- Granted
Links
Classifications
-
- 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 is conveyed from the surface via a concrete column located in a downpipe to a lower application point.
- the shafts occurring in mining which are to be concreted with the method according to the invention, have a depth of, for example, 500 m and more. If the concrete falls in the downpipe in an uncontrolled manner, there is a risk of segregation and blockage formation. This is especially true if deflections are provided within the downpipe.
- the purely gravimetric spreading of the concrete is associated with a high level of wear in such deep shafts, even if several blocking slides are provided along the drop line, which are switched periodically.
- the available gate valves cannot be used for reliable use due to the high switching wear caused by the abrasive concrete and the large number of switching operations required.
- the object of the invention is to develop a method and an arrangement for concreting deep, vertical shafts, with which a reliable and segregation-free transport of the
- the solution according to the invention is based on the procedural idea that the concrete is removed in portions from the downstream end of the downpipe from the advancing concrete column, separated from the concrete column and depressurized and then fed to the application site.
- the concrete column at the outlet end of the downpipe is guided into a cylinder and is supported there by a piston which moves back with an increase in the cylinder volume, so that the cylinder content of the the remaining concrete column is separated and then, preferably with the piston advanced, is discharged from the cylinder directly or indirectly to the application site.
- the concrete is expediently fed into a buffer container and from there to the application point.
- the depressurized concrete is advantageously fed to the application point over a further drop distance, which is shorter than the concrete column and can be formed, for example, by a distribution hose.
- the cylinder arrangement described is a decompression pump that is pressurized on the inlet side by the pressurized concrete column, in which the concrete is depressurized in portions and then fed to the application point.
- the advancing concrete column at the outlet-side end of the downpipe is diverted into the upward-pointing, downwardly open cylinder, while the concrete portions separated from the concrete column are discharged downwards from the cylinder.
- a further preferred embodiment of the invention provides that the advancing concrete column is alternately introduced into two separate cylinders at the outlet-side end of the downpipe and is portioned in counter-clockwise fashion and discharged without pressure, if necessary, to the application point via the buffer container.
- the downpipe must be filled with concrete so that there is no separation and no destruction along the fall line.
- the downpipe is first filled with filling water before the concrete is introduced into the downpipe with the interposition of at least one sealing element.
- the filling water then obtained on the outlet side is conveyed upwards via a return pipe connected to the lower end of the downpipe and communicating with it, preferably of a smaller diameter, under the action of the tracked concrete column or discarded into the shaft.
- an arrangement for concreting deep, vertical shafts which has a filling pump arranged above ground and a downpipe connected to the filling pump, the outlet-side end of the downpipe being connectable to a pressure-tight decompression pump, the outlet of which can be connected to the application point is.
- a hand-movable distributor hose leading to the application point can be connected to the outlet.
- the decompression pump has a pipe switch which can be connected on the inlet side to the downpipe and which can be connected pressure-tight alternately on the outlet side to one of two cylinders, of which the other cylinder opens into an outlet line preferably via a common buffer tank, in the cylinders are arranged in push-pull reciprocating pistons.
- the pipe switch is arranged in the buffer tank under the cylinders that are open at the bottom and points upwards on the outlet side in the direction of the cylinder openings.
- the connecting line which is designed, for example, as a distribution hose, points downward from the decompression pump, so that the depressurized concrete can be conveyed to the application site under the influence of gravity.
- a blocking slide is arranged in the downpipe in front of the decompression pump.
- a lockable return line communicating with the downpipe is preferably connected with a smaller cross section than the downpipe.
- the return line is used to lead the water, which was filled with concrete before the downpipe was filled, upwards out of the shaft under the action of the advancing concrete column. The water is returned on the principle of communicating tubes.
- the invention also relates to a decompression pump for conveying pressure-loaded thick materials, in particular concrete, to an application point, in particular for use in a concreting arrangement of the type described above.
- the decompression pump has a pipe switch acted on one side with the pressure-loaded thick material, which alternately connects to the outlet side of two cylinders can be connected in a pressure-tight manner, of which the other cylinder opens into an outlet preferably via a common buffer container, and two pistons which can be pushed back and forth in push-pull fashion are arranged in the cylinders.
- the buffer container expediently has an outlet connection on the bottom, preferably pointing downwards, to which a distributor hose is connectable. It is also expediently provided with a maintenance opening which can be closed in a pressure-tight manner.
- the above measures ensure that the pressures generated by the concrete column can be controlled at any depth of the shaft and that the concrete can be installed without any problems.
- a control device for the synchronous activation of the filling pump and the decompression pump is advantageously provided.
- FIG. 1 shows a section through a shaft with a shaft concreting system.
- FIG. 2 shows a detail X from FIG. 1 in an enlarged representation
- Fig. 3 is an enlarged section of Fig. 2 with the decompression pump in a partially sectioned representation.
- 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 freed from the various platforms 14, which can be reached via a ladder 16, with a hand-guided distribution hose 18 into the pre-assembled formwork 20 on the floor
- the delivery of the concrete via the distribution hose 18 takes place through the outlet 24 of a decompression pump 26 which is connected to a down pipe 30 at its inlet 28.
- the downpipe 30 leads from the surface (upper edge 31 of the shaft 12) essentially vertically downwards on one of the shaft walls 10 and is at the level of the lower edge of the decompression pump 26 towards it. arc.
- the downpipe 30 is charged with concrete on the inlet side via a filling pump 32, so that a concrete column forms in the downpipe 30, which is present at the end of the downpipe 30 under high pressure at the inlet 28 of the decompression pump.
- the decompression pump 26 comprises a tube switch 34 designed as an S-tube, which is pivotably mounted in a buffer tank 36 about a vertical axis 38 concentric with the inlet opening 28 by means of a hydraulic drive 40.
- a tube switch 34 designed as an S-tube, which is pivotably mounted in a buffer tank 36 about a vertical axis 38 concentric with the inlet opening 28 by means of a hydraulic drive 40.
- two feed cylinders 42 are arranged vertically, which open into the buffer tank 36 with their downward-facing openings 44 and whose pistons, not shown, can be driven in push-pull with the aid of a hydraulic cylinder 46, the piston of which on the rod side through a water tank 47 are.
- the pipe switch 34 is driven synchronously with the hydraulic cylinders 46 via the hydraulic drive 40, so that the outlet opening 48 of the pipe switch 44 alternately reaches one of the cylinder openings, while the other cylinder opening 44 points freely downward into the buffer container.
- the hydraulic unit 54 for supplying the hydraulic drive 40 and the hydraulic cylinder 46 is located on one of the platforms 14 in the vicinity of the decompression pump 26.
- the pipe switch 34 is in front of the relevant cylinder opening 44 in each of the cylinders 42 when the piston is lowered switched so that the pressurized concrete column is supported through the pipe switch 34 against the piston in question. When the piston is retracted, the advancing concrete column penetrates into the relevant cylinder 42 until the piston reaches its upper end position.
- the switch is switched to the other cylinder, the piston of which is in its lower end position.
- the first cylinder is opened toward the buffer container 46 so that the portion of concrete therein is depressurized via the atmospheric pressure prevailing in the buffer container 46 and reaches the buffer container 36 when the piston in question is advanced. From the buffer tank 36, the concrete falls through the leave 24 in the distribution hose 18 and from there is passed in free fall to the application point in the formwork 20.
- the buffer container 36 is provided with a side cover 50 which can be opened for maintenance purposes. Prior to this, the downpipe 30 is expediently blocked by a slide 52 in order to make the pipe switch 34 free of pressure.
- a water line 56 is additionally provided which communicates with the downpipe 30 in the area of the slide 42 and in the lower arc area of the downpipe 30.
- the decompression pump 26 must then be started via the hydraulic drive 40 and the hydraulic cylinders 46.
- the system is cleaned by means of a water column which is introduced into the downpipe from above with the interposition of a cleaning pig with the filling pump 32 switched off. About 20 m of water are sufficient for this, which gradually moves into the buffer tank 36 as the decompression pump 26 continues to operate.
- the invention relates to a method and an arrangement for concreting vertical shafts with a depth of, for example, 500 m and more.
- the concrete is conveyed there via a concrete column located in a downpipe 30 to a lower-lying application point 20.
- the concrete at the outlet end of the downpipe 30 is removed in portions from the advancing concrete column, separated from the concrete column and depressurized and then fed to the application site.
Landscapes
- 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
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19959217 | 1999-12-08 | ||
DE19959217A DE19959217A1 (en) | 1999-12-08 | 1999-12-08 | Method and arrangement for concreting vertical shafts |
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 true EP1235961A1 (en) | 2002-09-04 |
EP1235961B1 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) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1999
- 1999-12-08 DE DE19959217A patent/DE19959217A1/en not_active Withdrawn
-
2000
- 2000-11-16 WO PCT/EP2000/011329 patent/WO2001042570A1/en active Search and Examination
- 2000-11-16 AT AT00989859T patent/ATE251258T1/en not_active IP Right Cessation
- 2000-11-16 EP EP00989859A patent/EP1235961B1/en not_active Expired - Lifetime
- 2000-11-16 US US10/149,182 patent/US6776558B1/en not_active Expired - Fee Related
- 2000-11-16 ES ES00989859T patent/ES2206347T3/en not_active Expired - Lifetime
- 2000-11-16 DE DE50003946T patent/DE50003946D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0142570A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE251258T1 (en) | 2003-10-15 |
WO2001042570A1 (en) | 2001-06-14 |
US6776558B1 (en) | 2004-08-17 |
DE50003946D1 (en) | 2003-11-06 |
DE19959217A1 (en) | 2001-06-13 |
EP1235961B1 (en) | 2003-10-01 |
ES2206347T3 (en) | 2004-05-16 |
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