EP1452645B1 - Method for building a diaphragm wall in the ground and trench wall cutting apparatus - Google Patents
Method for building a diaphragm wall in the ground and trench wall cutting apparatus Download PDFInfo
- Publication number
- EP1452645B1 EP1452645B1 EP04000766A EP04000766A EP1452645B1 EP 1452645 B1 EP1452645 B1 EP 1452645B1 EP 04000766 A EP04000766 A EP 04000766A EP 04000766 A EP04000766 A EP 04000766A EP 1452645 B1 EP1452645 B1 EP 1452645B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trench
- frame
- trench wall
- cutting wheels
- cutter
- 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
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000002689 soil Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 31
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000003801 milling Methods 0.000 description 29
- 238000002156 mixing Methods 0.000 description 10
- 238000009966 trimming Methods 0.000 description 10
- 239000000725 suspension Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000036346 tooth eruption Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/13—Foundation slots or slits; Implements for making these slots or slits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
- E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
Definitions
- the invention relates to a method for producing a slot wall in the ground according to the preamble of claim 1. Furthermore, the invention relates to a trench wall cutter for producing a Frässchlitzes according to the preamble of claim 4.
- a generic trench cutter and a generic method are from the JP-A-09273150 known.
- a miller with a box-shaped frame is sunk to a supporting rope hanging to form a slot in the ground.
- To guide an upper portion of the slot is provided with guide walls, so as to specify an exact alignment of the box-shaped frame from the beginning.
- Through a clearance at the end faces of the box-shaped frame milling cuttings and supplied liquid is conveyed past the frame in a rear region of the slot.
- a second step after the grading of the slot to the final depth curable cement suspension can be introduced into the area of the cutting wheels and mixed by the rotating cutting wheels.
- JP-A-11200404 From the JP-A-11200404 is a trench cutter with a scaffold-like structured guide frame known. On the side surfaces of the cutting wheels injection nozzles are arranged through which a cement liquid can be injected under pressure to the outside, so as to widen the Frässchlitz. A particularly long guide frame ensures safe guidance of the mill along the already milled diaphragm walls.
- From the JP-A-08302670 is a method for producing a trench wall, in which the ground crushed by means of cutting wheels and the crushed soil material is conveyed together with supporting liquid via a pipe to the outside to a processing plant. After separation of coarse material, the liquid is returned to the slot and mixed via separate mixing wheels on the miller.
- the mill is mounted on a carrier which is constructed of H-shaped cross-section segments. The carrier with the cutter is suspended on a carrying cable.
- To guide the router in the upper area above the slot a guide frame construction is provided with guide walls.
- a method for producing a slot wall in the bottom is from DE-C-195 30 827 known.
- a milling slot is excavated in a first phase and the resulting excavated soil of the milling slot promoted to overground.
- the resulting milling slot is filled with a support suspension and supported so.
- a second phase after sinking the Frässchlitzes a hardening suspension is introduced into the slot while displacing the support suspension.
- the slot is supported from the beginning by a suspension which is prepared by mixing excavated soil material and a binder overground.
- the object of the present invention is to provide a method for producing a trench wall in the ground and a trench wall cutter with which a trench wall can be produced efficiently and in good quality.
- the cleared soil material is conveyed by the cutting wheel into a rear region of the milling slot, that the cleared soil material in the milling slot is mixed with the settable liquid, and that the cleared soil material is at least partially in the Milling slot is left to form the slot wall.
- a basic idea of the invention is to mix the soil material cleared away from the cutting wheels in the milling slot by the action of the cutting wheels with the settable liquid so to speak "in situ" and thereby to produce a hardening liquid-soil mixture. This eliminates the need to elaborate the entire cleared soil material by pumping equipment consuming to overground.
- the cleared soil material is conveyed according to the invention of the cutting wheels in a rear region of the Frässchlitzes.
- the rear region can be an area that is formed in the milling slot above the frame.
- the mixed with the liquid, cleared soil material is at least partially left in the milling slot, where it can harden to form the slot wall.
- a discharge device can be provided on the trench wall cutter or surface at the edge of the trimming slot.
- the cutting wheels In principle, it is possible to drive the cutting wheels uniformly when drilling the Frässchlitzes. However, a particularly good milling action and / or a particularly good mixing of the soil material with the settable liquid can be achieved by reversely driving the cutting wheels. By a temporary reversal of the direction of rotation of the cutting wheel, turbulences are formed in the soil material which are responsible for a particularly good mixing provide with the settable liquid.
- the cutting wheels are preferably uniformly or reversibly driven out of the milling slot when the trench wall cutter is pulled, as a result of which the force required for pulling can be significantly reduced and additional thorough mixing of the cleared soil material with the settable liquid is achieved.
- the trench wall cutter can be moved uniformly in the ground. It is particularly advantageous, however, that the trench wall cutter is at least temporarily offset in an alternating upward / downward movement. As a result, a particularly good mixing of the removed soil material with the settable liquid is achieved.
- the stroke of this alternating upward / downward movement can be significantly less than the total height of the slot. It may in particular be of the order of the diameter of the cutting wheels.
- Such alternating at least temporarily performed upward and downward movement can be achieved by the trench wall cutter is lifted by a construction equipment and then discharged again. An alternating upward / downward movement can be carried out both when sinking the Frässchlitzes and when pulling the trench wall cutter from the finished Frässchlitz.
- a trench wall cutter according to the invention is characterized in that the cross section of the frame is smaller than the cross section of the trimming slot to form a clearance through which cleared soil material from the at least one cutting wheel on the frame over in a rear portion of the trimming slot is conveyed.
- a basic idea of the trench wall cutter according to the invention is to form a free space next to the frame, through which cleared soil material and suspension as possible during production of the trimming slot and / or when pulling out the trench wall cutter from the finished trimming slot can flow past the frame of the trench wall cutter.
- This allows a particularly fast and energy-saving milling with a simultaneous efficient mixing effect.
- the cross section of the frame perpendicular to the direction of advance of the trench wall cutter never completely covers the trimming slot. This is achieved in that the circumferential dimensions of the cross-section of the frame are smaller than the inner dimensions of the Frässchlitzes.
- one or more openings may be provided in the cross section of the frame. Such an arrangement allows a passage of cleared soil material past the frame in the direction opposite to a direction of movement of the frame.
- a plurality of cutting wheels are provided in any number, which have parallel axes of rotation.
- a preferred embodiment has four cutting wheels, two of which are arranged in pairs rotatable about the same axis of rotation.
- a cross section of the milling slot is preferably rectangular.
- the at least one cutting wheel has a suitable for a reversing rotary movement Fräs leopardan ever.
- a Fräs leopardan ever can clear pending soil material in a rotation of the cutting wheels both clockwise and counterclockwise. This allows a particularly good mixing of the soil material with a simultaneously high rate of degradation.
- a feed device for feeding a liquid, in particular a settable liquid, into the milling slot at an arbitrary position in the milling slot.
- a feed device is arranged on the frame.
- a particularly good mixing of the cleared soil material with the liquid is achieved.
- a slot wall milling device is characterized in that the slot wall cutter is displaceably guided on the carrier device by means of a linear guide device.
- the trench wall cutter is guided not on the wall of the trimming slot but on a carrier device spaced apart from the trench wall cutter.
- the guide takes place in particular in a direction parallel to the direction of advance of the trench wall cutter direction.
- the linear guide device has a guide rod, in particular a telescopic rod, on which the trench wall cutter is mounted.
- a guide rod allows a particularly good lateral guidance of the trench wall cutter.
- it also allows a transmission of an axial force directed in the advancing direction from the carrier device to the trench wall cutter, whereby a particularly fast propulsion of the trench wall cutter can be achieved during drilling.
- the trench wall cutter can also be designed such that it mills into the ground only when its cutting wheels are rotating due to its own weight.
- a guide rod can be used, which is not designed for the transmission of a thrust direction directed axial force.
- the diameter of the guide rod is preferably dimensioned to be smaller than the diameter of the cross section of the frame.
- the guide rod preferably has a substantially rectangular or substantially circular cross-section.
- a telescopic rod can also be used preferably a Kelly rod.
- a particularly preferred slot wall milling device is further characterized in that the linear guide device has a guide sleeve arranged on the carrier device, through which the guide rod is guided.
- a guide sleeve can surround the guide rod wholly or partially in the circumferential direction.
- projections and / or depressions may be formed, which engage with corresponding recesses and / or projections on the guide rod and thus ensure a rotationally fixed guidance of the guide rod.
- an actuator in particular a cable pull mechanism, is provided for the vertical movement of the guide rod on the carrier device.
- Such an actuator can be designed in addition to pulling out the trench wall cutter from the Frässchlitz also be adapted to transmit an axial force in the advancing direction of the trench wall cutter on the trench wall cutter. As a result, a particularly good milling performance can be achieved.
- the actuator may be configured to allow alternating upward / downward movement of the trench wall cutter. Possible embodiments of the actuator include a rack and pinion mechanism or a hydraulic mechanism.
- the slot wall milling device according to the invention has the previously described trench wall cutter.
- the method according to the invention can be carried out with both.
- FIGS. 1 and 2 show front views of two different embodiments of trench wall cutters 10 according to the invention.
- a guide rod 33 On the cutting wheels 12, 12 'facing away from the sides of the frame 20, this is attached to a guide rod 33.
- the guide rod 33 is approximately circular cross section. Laterally on the guide rod 33 projections 35 are formed, which serve for the rotationally fixed guidance of the guide rod 33 in the guide sleeve 34.
- supply lines 40 are arranged for hydraulic fluid.
- a feed line feed device 41 is formed for a liquid. As shown in Fig. 2, the feed device 41 formed as a feed line passes through the frame 20 and ends between the cutting wheels 12, 12 '.
- the cutting teeth 13 are arranged for an opposite operation of the cutting wheels. It is provided that the cutting wheel 12 shown on the left in Fig. 2 in a clockwise direction, the cutting wheel 12 'shown on the right is to rotate counterclockwise. As a result, suspension in the central region is sucked through the cutting wheels 12, 12 ', while the milled soil material is conveyed together with suspension on the outer sides upwards.
- On the periphery of the cutting wheels 12, 12 'also known laterally pivotable folding teeth 14 are arranged, which clear the bottom below the transmission plate.
- FIGS. 4 to 7 show a slot wall milling device according to the invention.
- the trench wall milling device has a carrier device 30 embodied as a crawler-driven construction vehicle.
- a mast 31 is mounted on which in turn at two attachment points, a guide sleeve 34 is attached.
- a cable pull mechanism 37 (FIG. 4) or a slider 38 (FIG. 5) are provided for vertically moving the guide bar 33.
- Supply lines 40 for hydraulic fluid and a supply line 41 for a settable liquid formed as a supply line occur at the upper end of the guide rod 33 out of this.
- the trench wall cutter 10 rests with its frame directly against the guide sleeve 34.
- the frame 20 of the trench wall cutter 10 is designed such that during excavation (FIG. 7) a free space 6 is created between the frame 20 and a wall of the trimming slot 3. This clearance 6 allows the passage of cleared soil material past the frame 20 in a rear region 4 of the Frässchlitzes 3, which is located above the trench wall cutter 10.
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
- Crushing And Grinding (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
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Abstract
Description
Die Erfindung betrifft ein Verfahren zum Herstellen einer Schlitzwand im Boden gemäß dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung eine Schlitzwandfräse zum Herstellen eines Frässchlitzes gemäß dem Oberbegriff des Anspruchs 4.The invention relates to a method for producing a slot wall in the ground according to the preamble of claim 1. Furthermore, the invention relates to a trench wall cutter for producing a Frässchlitzes according to the preamble of
Eine gattungsgemäße Schlitzwandfräse und ein gattungsgemäßes Verfahren sind aus der
Aus der
Aus der
Aus der
Ein Verfahren zum Herstellen einer Schlitzwand im Boden ist aus der
Bei einem aus der
Zur Durchführung dieser bekannten Verfahren können aus der
Zur Herstellung der Bindemittel-Boden-Mischung erfordern die zuvor beschriebenen Verfahren jedoch vergleichsweise aufwändige, Übertage angeordnete Pump-, Misch- und Speichereinrichtungen.For the preparation of the binder-soil mixture, however, the methods described above require comparatively expensive, superimposed pumping, mixing and storage devices.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zum Herstellen einer Schlitzwand im Boden und eine Schlitzwandfräse anzugeben, mit denen eine Schlitzwand effizient und in guter Qualität herstellt werden kann. The object of the present invention is to provide a method for producing a trench wall in the ground and a trench wall cutter with which a trench wall can be produced efficiently and in good quality.
Die Aufgabe wird durch ein Verfahren mit den Merkmalen des Anspruchs 1 und einer Schlitzwandfräse mit den Merkmalen des Anspruchs 4 gelöst. Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.The object is achieved by a method having the features of claim 1 and a trench cutter with the features of
Bei dem erfindungsgemäßen Verfahren zum Herstellen einer Schlitzwand im Boden ist vorgesehen, dass das abgeräumte Bodenmaterial von dem Fräsrad in einen rückwärtigen Bereich des Frässchlitzes gefördert wird, dass das abgeräumte Bodenmaterial im Frässchlitz mit der abbindbaren Flüssigkeit durchmischt wird, und dass das abgeräumte Bodenmaterial zumindest teilweise im Frässchlitz zum Bilden der Schlitzwand belassen wird.In the method according to the invention for producing a slot wall in the ground, it is provided that the cleared soil material is conveyed by the cutting wheel into a rear region of the milling slot, that the cleared soil material in the milling slot is mixed with the settable liquid, and that the cleared soil material is at least partially in the Milling slot is left to form the slot wall.
Ein Grundgedanke der Erfindung besteht darin, das von den Fräsrädern abgeräumte Bodenmaterial im Frässchlitz durch die Wirkung der Fräsräder mit der abbindbaren Flüssigkeit sozusagen "in situ" zu vermengen und dabei eine aushärtende Flüssigkeit-Boden-Mischung herzustellen. Hierdurch entfällt die Notwendigkeit, das gesamte abgeräumte Bodenmaterial durch Pumpeinrichtungen aufwändig nach Übertage zu fördern. Das abgeräumte Bodenmaterial wird erfindungsgemäß von den Fräsrädern in einen rückwärtigen Bereich des Frässchlitzes gefördert. Der rückwärtige Bereich kann dabei ein Bereich sein, der im Frässchlitz oberhalb des Rahmens ausgebildet ist. Erfindungsgemäß wird das mit der Flüssigkeit durchmischte, abgeräumte Bodenmaterial zumindest teilweise im Frässchlitz belassen, wo es zum Bilden der Schlitzwand aushärten kann. Aufgrund einer möglichen Volumenänderung des Bodenmaterials bei der Zufuhr der abbindbaren Flüssigkeit kann es jedoch vorteilhaft sein, einen Teil des abgeräumten Bodenmaterials mit Suspension aus dem Frässchlitz abzufördern. Hierzu kann an der Schlitzwandfräse oder Übertage am Rand des Frässchlitzes eine Abfuhreinrichtung vorgesehen sein.A basic idea of the invention is to mix the soil material cleared away from the cutting wheels in the milling slot by the action of the cutting wheels with the settable liquid so to speak "in situ" and thereby to produce a hardening liquid-soil mixture. This eliminates the need to elaborate the entire cleared soil material by pumping equipment consuming to overground. The cleared soil material is conveyed according to the invention of the cutting wheels in a rear region of the Frässchlitzes. The rear region can be an area that is formed in the milling slot above the frame. According to the invention, the mixed with the liquid, cleared soil material is at least partially left in the milling slot, where it can harden to form the slot wall. However, due to a possible volume change of the soil material during the supply of the settable liquid, it may be advantageous to remove some of the cleared soil material with suspension from the milling slot. For this purpose, a discharge device can be provided on the trench wall cutter or surface at the edge of the trimming slot.
Grundsätzlich ist es möglich, die Fräsräder beim Abteufen des Frässchlitzes gleichförmig anzutreiben. Eine besonders gute Fräswirkung und/oder eine besonders gute Durchmischung des Bodenmaterials mit der abbindbaren Flüssigkeit kann aber dadurch erzielt werden, dass die Fräsräder reversierend angetrieben werden. Durch ein zeitweises Umkehren der Drehrichtung des Fräsrades bilden sich im Bodenmaterial Verwirbelungen aus, die für eine besonders gute Vermischung mit der abbindbaren Flüssigkeit sorgen. Bevorzugt werden die Fräsräderauch beim Ziehen der Schlitzwandfräse aus dem Frässchlitz gleichförmig oder reversierend angetrieben, wodurch sich der für das Ziehen notwendige Kraftaufwand deutlich verringern lässt und eine zusätzliche Durchmischung des abgeräumten Bodenmaterials mit der abbindbaren Flüssigkeit erreicht wird.In principle, it is possible to drive the cutting wheels uniformly when drilling the Frässchlitzes. However, a particularly good milling action and / or a particularly good mixing of the soil material with the settable liquid can be achieved by reversely driving the cutting wheels. By a temporary reversal of the direction of rotation of the cutting wheel, turbulences are formed in the soil material which are responsible for a particularly good mixing provide with the settable liquid. The cutting wheels are preferably uniformly or reversibly driven out of the milling slot when the trench wall cutter is pulled, as a result of which the force required for pulling can be significantly reduced and additional thorough mixing of the cleared soil material with the settable liquid is achieved.
Bei der Herstellung des Frässchlitzes kann die Schlitzwandfräse gleichförmig im Boden bewegt werden. Besonders vorteilhaft ist es jedoch, dass die Schlitzwandfräse dabei zumindest zeitweise in eine alternierende Aufwärts-/Abwärtsbewegung versetzt wird. Hierdurch wird eine besonders gute Durchmischung des abgetragenen Bodenmaterials mit der abbindbaren Flüssigkeit erzielt. Der Hub dieser alternierenden Aufwärts-/Abwärtsbewegung kann dabei deutlich geringer als die Gesamthöhe des Schlitzes sein. Er kann insbesondere in der Größenordnung des Durchmessers der Fräsräder liegen. Eine solche zumindest zeitweise durchgeführte abwechselnde Aufwärts- und Abwärtsbewegung kann dadurch erzielt werden, dass die Schlitzwandfräse von einem Baugerät angehoben und anschließend wieder abgelassen wird. Eine alternierende Aufwärts-/Abwärtsbewegung kann dabei sowohl beim Abteufen des Frässchlitzes als auch beim Ziehen der Schlitzwandfräse aus dem fertigen Frässchlitz durchgeführt werden.In the production of the Frässchlitzes the trench wall cutter can be moved uniformly in the ground. It is particularly advantageous, however, that the trench wall cutter is at least temporarily offset in an alternating upward / downward movement. As a result, a particularly good mixing of the removed soil material with the settable liquid is achieved. The stroke of this alternating upward / downward movement can be significantly less than the total height of the slot. It may in particular be of the order of the diameter of the cutting wheels. Such alternating at least temporarily performed upward and downward movement can be achieved by the trench wall cutter is lifted by a construction equipment and then discharged again. An alternating upward / downward movement can be carried out both when sinking the Frässchlitzes and when pulling the trench wall cutter from the finished Frässchlitz.
Eine erfindungsgemäße Schlitzwandfräse ist dadurch gekennzeichnet, dass der Querschnitt des Rahmens kleiner als der Querschnitt des Frässchlitzes unter Bildung eines Freiraumes ausgebildet ist, durch welchen abgeräumtes Bodenmaterial von dem mindestens ein Fräsrad an dem Rahmen vorbei in einen rückwärtigen Bereich des Frässchlitzes förderbar ist.A trench wall cutter according to the invention is characterized in that the cross section of the frame is smaller than the cross section of the trimming slot to form a clearance through which cleared soil material from the at least one cutting wheel on the frame over in a rear portion of the trimming slot is conveyed.
Ein Grundgedanke der erfindungsgemäßen Schlitzwandfräse ist es, neben dem Rahmen einen Freiraum auszubilden, durch welchen abgeräumtes Bodenmaterial und Suspension beim Herstellen des Frässchlitzes und/oder beim Herausziehen der Schlitzwandfräse aus dem fertigen Frässchlitz möglichst ungehindert am Rahmen der Schlitzwandfräse vorbeiströmen kann. Hierdurch wird ein besonders schnelles und kraftsparendes Fräsen mit einem gleichzeitigen effizienten Mischeffekt ermöglicht. Zur Bildung des Freiraumes ist erfindungsgemäß vorgesehen, dass der Querschnitt des Rahmens senkrecht zur Vortriebsrichtung der Schlitzwandfräse den Frässchlitz niemals vollständig abdeckt. Dies wird dadurch erreicht, dass die Umfangsabmessungen des Querschnittes des Rahmens kleiner als die Innenabmessungen des Frässchlitzes sind. Im Querschnitt des Rahmens können eine oder mehrere Öffnungen vorgesehen sein. Eine solche Anordnung erlaubt ein Durchströmen von abgeräumtem Bodenmaterial am Rahmen vorbei in die einer Bewegungsrichtung des Rahmens entgegengesetzten Richtung.A basic idea of the trench wall cutter according to the invention is to form a free space next to the frame, through which cleared soil material and suspension as possible during production of the trimming slot and / or when pulling out the trench wall cutter from the finished trimming slot can flow past the frame of the trench wall cutter. This allows a particularly fast and energy-saving milling with a simultaneous efficient mixing effect. To form the free space according to the invention, it is provided that the cross section of the frame perpendicular to the direction of advance of the trench wall cutter never completely covers the trimming slot. This is achieved in that the circumferential dimensions of the cross-section of the frame are smaller than the inner dimensions of the Frässchlitzes. In the cross section of the frame, one or more openings may be provided. Such an arrangement allows a passage of cleared soil material past the frame in the direction opposite to a direction of movement of the frame.
Bei einer besonders bevorzugten Schlitzwandfräse sind mehrere Fräsräder in beliebiger Anzahl vorgesehen, welche parallele Drehachsen aufweisen. Eine bevorzugte Ausführungsform weist vier Fräsräder auf, von denen jeweils zwei paarweise um dieselbe Drehachse drehbar angeordnet sind. Ein Querschnitt des Frässchlitzes ist bevorzugt rechteckig ausgebildet.In a particularly preferred trench cutter, a plurality of cutting wheels are provided in any number, which have parallel axes of rotation. A preferred embodiment has four cutting wheels, two of which are arranged in pairs rotatable about the same axis of rotation. A cross section of the milling slot is preferably rectangular.
Bei einer vorteilhaften Ausführungsform der erfindungsgemäßen Schlitzwandfräse weist das mindestens eine Fräsrad eine für eine reversierende Drehbewegung geeignete Fräszahnanordnung auf. Eine solche Fräszahnanordnung kann anstehendes Bodenmaterial bei einer Drehung der Fräsräder sowohl im Uhrzeigersinn als auch im Gegenuhrzeigersinn abräumen. Dies ermöglicht eine besonders gute Durchmischung des Bodenmaterials bei einer gleichzeitig hohen Abbaugeschwindigkeit.In an advantageous embodiment of the trench wall cutter according to the invention, the at least one cutting wheel has a suitable for a reversing rotary movement Fräszahnanordnung. Such a Fräszahnanordnung can clear pending soil material in a rotation of the cutting wheels both clockwise and counterclockwise. This allows a particularly good mixing of the soil material with a simultaneously high rate of degradation.
Grundsätzlich ist es möglich, eine Zuführungseinrichtung zum Zuführen einer Flüssigkeit, insbesondere einer abbindbaren Flüssigkeit, in den Frässchlitz an einer beliebigen Position im Frässchlitz vorzusehen. Erfindungsgemäß ist es jedoch, dass eine solche Zuführeinrichtung am Rahmen angeordnet ist. Insbesondere durch eine Anordnung nahe dem mindestens einem Fräsrad wird eine besonders gute Durchmischung des abgeräumten Bodenmaterials mit der Flüssigkeit erreicht.In principle, it is possible to provide a feed device for feeding a liquid, in particular a settable liquid, into the milling slot at an arbitrary position in the milling slot. According to the invention, however, such a feed device is arranged on the frame. In particular, by an arrangement near the at least one cutting wheel, a particularly good mixing of the cleared soil material with the liquid is achieved.
Eine erfindungsgemäße Schlitzwandfräsvorrichtung ist dadurch gekennzeichnet, dass die Schlitzwandfräse an dem Trägergerät mittels einer Linearführungseinrichtung verschiebbar geführt ist.A slot wall milling device according to the invention is characterized in that the slot wall cutter is displaceably guided on the carrier device by means of a linear guide device.
Gemäß einem Aspekt einer erfindungsgemäßen Schlitzwandfräsvorrichtung ist die Schlitzwandfräse nicht an der Wand des Frässchlitzes sondern an einem von der Schlitzwandfräse beabstandeten Trägergerät geführt. Die Führung erfolgt dabei insbesondere in einer zur Vortriebsrichtung der Schlitzwandfräse parallelen Richtung. Eine solche Anordnung ermöglicht es, den Querschnitt des Rahmens der Schlitzwandfräse möglichst klein auszugestalten. Insbesondere ist es nicht mehr notwendig, dass sich der Rahmen der Schlitzwandfräse für eine laterale Führung im Kontakt mit der Wand des Frässchlitzes befindet. Hierdurch kann der Rahmen ohne Führungselemente ausgestaltet werden und seine Abmessungen können entsprechend klein gehalten werden, was einen einfachen Durchgang von abgeräumten Bodenmaterial ermöglicht. Die Schlitzwandfräse kann beispielsweise an einer Führungseinrichtung eingesetzt werden, wie sie bei Rüttlern bekannt ist.According to one aspect of a trench wall cutting device according to the invention, the trench wall cutter is guided not on the wall of the trimming slot but on a carrier device spaced apart from the trench wall cutter. The guide takes place in particular in a direction parallel to the direction of advance of the trench wall cutter direction. Such an arrangement makes it possible to design the cross section of the frame of the trench wall cutter as small as possible. In particular, it is no longer necessary for the frame of the trench wall cutter to be in contact with the wall of the trimming slot for a lateral guide. As a result, the frame can be configured without guide elements and its dimensions can be kept correspondingly small, which allows a simple passage of cleared soil material. The trench wall cutter can be used for example on a guide device, as is known in vibrators.
Bei einer erfindungsgemäßen Schlitzwandfräsvorrichtung weist die Linearführungseinrichtung eine Führungsstange, insbesondere eine Teleskopstange auf, an welcher die Schlitzwandfräse gelagert ist. Eine solche Führungsstange ermöglicht eine besonders gute laterale Führung der Schlitzwandfräse. Sie erlaubt insbesondere auch eine Übertragung einer in Vortriebsrichtung gerichteten Axialkraft vom Trägergerät auf die Schlitzwandfräse, wodurch ein besonders schneller Vortrieb der Schlitzwandfräse beim Abteufen erzielt werden kann. Grundsätzlich kann die Schlitzwandfräse aber auch so ausgebildet sein, dass sie sich bei rotierenden Fräsrädern lediglich aufgrund ihres Eigengewichtes in den Boden einfräst. In diesem Fall kann auch eine Führungsstange verwendet werden, die für die Übertragung einer in Vortriebsrichtung gerichteten Axialkraft nicht ausgelegt ist.In a trench wall milling device according to the invention, the linear guide device has a guide rod, in particular a telescopic rod, on which the trench wall cutter is mounted. Such a guide rod allows a particularly good lateral guidance of the trench wall cutter. In particular, it also allows a transmission of an axial force directed in the advancing direction from the carrier device to the trench wall cutter, whereby a particularly fast propulsion of the trench wall cutter can be achieved during drilling. In principle, however, the trench wall cutter can also be designed such that it mills into the ground only when its cutting wheels are rotating due to its own weight. In this case, a guide rod can be used, which is not designed for the transmission of a thrust direction directed axial force.
Der Durchmesser der Führungsstange ist bevorzugt so bemessen, dass er kleiner als der Durchmesser des Querschnittes des Rahmens ist. Die Führungsstange hat dabei bevorzugt einen im Wesentlichen rechteckigen oder einen im Wesentlichen kreisförmigen Querschnitt. Als Teleskopstange kann bevorzugt auch eine Kelly-Stange verwendet werden.The diameter of the guide rod is preferably dimensioned to be smaller than the diameter of the cross section of the frame. The guide rod preferably has a substantially rectangular or substantially circular cross-section. As a telescopic rod can also be used preferably a Kelly rod.
Eine besonders bevorzugte Schlitzwandfräsvorrichtung ist ferner dadurch gekennzeichnet, dass die Linearführungseinrichtung eine am Trägergerät angeordnete Führungshülse aufweist, durch welche die Führungsstange hindurchgeführt ist. Eine solche Führungshülse kann die Führungsstange ganz oder nur teilweise in Umfangsrichtung umgreifen. An der Führungshülse können Vorsprünge und/oder Vertiefungen ausgebildet sein, welche mit entsprechenden Vertiefungen und/oder Vorsprüngen an der Führungsstange in Eingriff stehen und damit eine drehfeste Führung der Führungsstange gewährleisten.A particularly preferred slot wall milling device is further characterized in that the linear guide device has a guide sleeve arranged on the carrier device, through which the guide rod is guided. Such a guide sleeve can surround the guide rod wholly or partially in the circumferential direction. On the guide sleeve projections and / or depressions may be formed, which engage with corresponding recesses and / or projections on the guide rod and thus ensure a rotationally fixed guidance of the guide rod.
Besonders vorteilhaft ist ferner, dass am Trägergerät ein Stellantrieb, insbesondere ein Seilzug-Mechanismus, zum vertikalen Verfahren der Führungsstange vorgesehen ist. Ein solcher Stellantrieb kann neben dem Herausziehen der Schlitzwandfräse aus dem Frässchlitz auch dazu ausgelegt sein, eine Axialkraft in Vortriebsrichtung der Schlitzwandfräse auf die Schlitzwandfräse zu übertragen. Hierdurch kann eine besonders gute Fräsleistung erreicht werden. Ferner kann der Stellantrieb so ausgelegt sein, dass er eine alternierende Aufwärts-/Abwärts-Bewegung der Schlitzwandfräse ermöglicht. Mögliche Ausführungsformen des Stellantriebs weisen einen ZahnstangenMechanismus oder einen hydraulischen Mechanismus auf.It is also particularly advantageous that an actuator, in particular a cable pull mechanism, is provided for the vertical movement of the guide rod on the carrier device. Such an actuator can be designed in addition to pulling out the trench wall cutter from the Frässchlitz also be adapted to transmit an axial force in the advancing direction of the trench wall cutter on the trench wall cutter. As a result, a particularly good milling performance can be achieved. Further, the actuator may be configured to allow alternating upward / downward movement of the trench wall cutter. Possible embodiments of the actuator include a rack and pinion mechanism or a hydraulic mechanism.
Vorteilhafterweise weist die erfindungsgemäße Schlitzwandfräsvorrichtung die zuvor beschriebene Schlitzwandfräse auf. Mit beiden kann insbesondere das erfindungsgemäße Verfahren durchgeführt werden.Advantageously, the slot wall milling device according to the invention has the previously described trench wall cutter. In particular, the method according to the invention can be carried out with both.
Die Erfindung wird weiter anhand von bevorzugten Ausführungsbeispielen erläutert, welche schematisch in den Zeichnungen dargestellt sind. In den Zeichnungen zeigen:
- Fig. 1
- eine teilweise geschnittene Vorderansicht einer erfindungsgemäßen Schlitzwandfräse und einer Führungsstange;
- Fig. 2
- eine teilweise geschnittene Vorderansicht einer weiteren erfindungsgemäßen Schlitzwandfräse mit einer Führungsstange;
- Fig. 3
- eine Querschnittansicht der in Fig. 2 gezeigten Führungsstange entlang A-A;
- Fig. 4
- eine Seitenansicht einer erfindungsgemäßen Schlitzwandfräsvorrichtung;
- Fig. 5
- eine Seitenansicht einer weiteren erfindungsgemäßen Schlitzwandfräsvorrichtung;
- Fig. 6
- eine Teilansicht einer erfindungsgemäßen Schlitzwandfräsvorrichtung im hochgezogenen Zustand; und
- Fig. 7
- eine Teilansicht einer erfindungsgemäßen Schlitzwandfräsvorrichtung in einer Endstellung.
- Fig. 1
- a partially sectioned front view of a trench cutter according to the invention and a guide rod;
- Fig. 2
- a partially sectioned front view of another trench cutter according to the invention with a guide rod;
- Fig. 3
- a cross-sectional view of the guide rod shown in Figure 2 along AA.
- Fig. 4
- a side view of a Schlitzwandfräsvorrichtung invention;
- Fig. 5
- a side view of another Schlitzwandfräsvorrichtung invention;
- Fig. 6
- a partial view of a Schlitzwandfräsvorrichtung invention in the raised state; and
- Fig. 7
- a partial view of a Schlitzwandfräsvorrichtung invention in an end position.
Die Fig. 1 und 2 zeigen Vorderansichten zweier unterschiedlicher Ausführungsbeispiele erfindungsgemäßer Schlitzwandfräsen 10. An einem als Trägerplatte ausgeführten Rahmen 20 sind zwei Fräsräder 12, 12' drehbar befestigt. Die Fräsräder 12, 12' sind dabei unmittelbar nebeneinander mit parallel verlaufenden Drehachsen ausgebildet. Ein eingehauster und in Form von Hydraulikmotoren ausgebildeter Antrieb 15, 15' ist am Rahmen 20 angebracht und mit den Fräsrädern 12, 12' wirkend verbunden.FIGS. 1 and 2 show front views of two different embodiments of
Auf der den Fräsrädern 12, 12' abgewandten Seiten des Rahmens 20 ist dieser an einer Führungsstange 33 befestigt. Wie Fig. 3 entnommen werden kann, weist die Führungsstange 33 einen annähernd kreisförmigen Querschnitt auf. Seitlich an der Führungsstange 33 sind Vorsprünge 35 ausgebildet, die zur drehfesten Führung der Führungsstange 33 in der Führungshülse 34 dienen. Innerhalb der Führungsstange 33 sind Versorgungsleitungen 40 für Hydraulikfluid angeordnet. Ferner ist in der Führungsstange 33 sowie am Rahmen 20 eine als Zuführungsleitung ausgebildete Zuführungseinrichtung 41 für eine Flüssigkeit ausgebildet. Wie in Fig. 2 gezeigt ist, tritt die als Zuführungsleitung ausgebildete Zuführungseinrichtung 41 durch den Rahmen 20 hindurch und endet zwischen den Fräsrädern 12, 12'.On the cutting
An den Fräsrädern 12, 12' sind umfangseitig Fräszähne 13 ausgebildet. Die Fräszähne 13 sind dabei für einen gegenläufigen Betrieb der Fräsräder angeordnet. Hierbei ist vorgesehen, dass das in Fig. 2 links dargestellte Fräsrad 12 im Uhrzeigersinn, das rechts dargestellte Fräsrad 12' im Gegenuhrzeigersinn zu drehen ist. Hierdurch wird Suspension im mittleren Bereich durch die Fräsräder 12, 12' angesaugt, während das abgefräste Bodenmaterial zusammen mit Suspension an den Außenseiten nach oben gefördert wird. Umfangsseitig an den Fräsrädern 12, 12' sind zudem bekannte seitlich verschwenkbare Klappzähne 14 angeordnet, welche Boden unterhalb des Getriebeschildes abräumen.On the cutting
Die Fig. 4 bis 7 zeigen eine erfindungsgemäße Schlitzwandfräsvorrichtung. Die Schlitzwandfräsvorrichtung weist ein als raupengetriebenes Baufahrzeug ausgebildetes Trägergerät 30 auf. Am Trägergerät 30 ist ein Mast 31 gelagert, an dem wiederum an zwei Befestigungspunkten eine Führungshülse 34 befestigt ist. Durch die Führungshülse 34 verläuft in vertikaler Richtung die Führungsstange 33, an deren unterem Ende die Schlitzwandfräse 10 befestigt ist. Ein Seilzug-Mechanismus 37 (Fig. 4) oder einer Verschiebeeinrichtung 38 (Fig. 5) sind zum vertikalen Verfahren der Führungsstange 33 vorgesehen. Versorgungsleitungen 40 für Hydraulikfluid sowie eine als Zuführungsleitung ausgebildete Zuführungseinrichtung 41 für eine abbindbare Flüssigkeit treten am oberen Ende der Führungsstange 33 aus dieser heraus. Im hochgezogenen Zustand der Schlitzwandfräse 10 (Fig. 6) liegt die Schlitzwandfräse 10 mit ihrem Rahmen unmittelbar an der Führungshülse 34 an.FIGS. 4 to 7 show a slot wall milling device according to the invention. The trench wall milling device has a
Der Rahmen 20 der Schlitzwandfräse 10 ist so ausgebildet, dass beim Abteufen (Fig. 7) ein Freiraum 6 zwischen dem Rahmen 20 und einer Wand des Frässchlitzes 3 entsteht. Dieser Freiraum 6 erlaubt den Durchgang von abgeräumtem Bodenmaterial am Rahmen 20 vorbei in einem rückwärtigen Bereich 4 des Frässchlitzes 3, der sich oberhalb der Schlitzwandfräse 10 befindet.The
Claims (11)
- Method for making a trench wall in the ground, in which- at least two cutting wheels (12, 12') directly and rotatably located on a frame (20) of a trench wall cutter (10) are given a rotary movement by a drive (15, 15'),- the trench wall cutter (10) with the frame (20) is lowered into the ground, wherein soil material located below the cutting wheels (12, 12') is stripped and a cut trench (3) is made,- the cut trench (3) is filled with a settable liquid, which is introduced into the cut trench (3) at the frame (20) between the cutting wheels (12, 12'),- the stripped soil material is conveyed from the cutting wheels (12, 12') in planned manner through a free space (6) along the frame (20) into a rear area (4) of the cut trench (3),- the stripped soil material is intermixed with the settable liquid in the cut trench (3), and- the stripped soil material is at least partly left in the cut trench (3) for forming the trench wall,characterized in that- the trench wall cutter (10) is linearly guided in the cut trench (3) by linear guidance means with a guide rod (33),- for providing the free space (6) the circumferential dimensions of the cross-section of the frame (20) are smaller than the internal dimensions of the cut trench (3) and the frame (20) is guided without contact to the wall of the cut trench (3).
- Method for making a trench wall according to claim 1,
characterized in that
the cutting wheels (12, 12') are driven in reversing manner. - Method for making a trench wall according to claim 1 or 2,
characterized in that
when making the cut trench (3), the trench wall cutter (10) is at least temporarily given an alternating upward/downward movement. - Trench wall cutter (10) for making a cut trench having- a frame (20),- at least two cutting wheels (12, 12') directly and rotatably located on the frame (20),- a supply device (41) located on the frame (20) for supplying a liquid into the cut trench (3), wherein the supply device ends between the cutting wheels (12, 12'),- wherein at the frame (20) a free space (6) is provided, through which stripped soil material is conveyable in planned manner from the cutting wheels (12, 12') along the frame (20) into a rear area (4) of the cut trench (3),characterized in that- linear guidance means with a guide rod (33), which is located at an upper end of the frame (20), and- the frame (20) has a cross-section, the circumferential dimensions of which are smaller than the internal dimensions of the cross-section of the cut trench (3) for forming a free space (6), wherein the frame (20) is guidable without contact to a wall of the cut trench (3).
- Trench wall cutter according to claim 4,
characterized in that
cutting wheels (12, 12') have a cutting tooth arrangement suitable for a reversing rotary movement. - Trench wall cutter according to claim 4 or 5,
characterized in that
the height of the trench wall cutter (10) from a lower end of the cutting wheels (12, 12') to an upper end of the frame (20) is smaller than the double diameter of the cutting wheels (12, 12'). - Trench wall cutter according to anyone of claims 4, to 6,
characterized in that
the frame (20) tapers from the cutting wheels (12, 12') to the guide rod (33). - Trench wall cutting device (1) for making a trench wall, particularly using a method according to anyone of the claims 1 to 3, having- a carrier implement (30) and- a trench wall cutter (10) according to anyone of the claims 4 to 7, which is guided in substantially vertically displaceable manner on the carrier implement (30) by linear guidance means with a guide rod (33).
- Trench wall cutting device (1) according to claim 8,
characterized in that
the guide rod (33) is formed as a telescopic rod. - Trench wall cutting device (1) according to claim 8 or 9,
characterized in that
the linear guidance means has a guide sleeve (34), which is located on the carrier implement (30) and through which is passed the guide rod (33). - Trench wall cutting device (1) according to anyone of the claims 8 to 10,
characterized in that
on the carrier implement (30) is provided a positioning drive, particularly a cable-hauled mechanism (37), for a vertical displacement of the guide rod (33).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06024531A EP1752583B1 (en) | 2003-02-27 | 2004-01-15 | Trench wall cutting apparatus and method for building a diaphragm wall in the ground |
SI200430490T SI1452645T2 (en) | 2003-02-27 | 2004-01-15 | Method for building a diaphragm wall in the ground and trench wall cutting apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE10308538 | 2003-02-27 | ||
DE10308538.6A DE10308538C5 (en) | 2003-02-27 | 2003-02-27 | Method of making a trench wall in the ground, trench wall cutter and trench wall cutter |
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EP06024531A Division EP1752583B1 (en) | 2003-02-27 | 2004-01-15 | Trench wall cutting apparatus and method for building a diaphragm wall in the ground |
EP06024531.3 Division-Into | 2006-11-27 |
Publications (3)
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EP1452645A1 EP1452645A1 (en) | 2004-09-01 |
EP1452645B1 true EP1452645B1 (en) | 2007-09-12 |
EP1452645B2 EP1452645B2 (en) | 2013-05-01 |
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EP06024531A Expired - Lifetime EP1752583B1 (en) | 2003-02-27 | 2004-01-15 | Trench wall cutting apparatus and method for building a diaphragm wall in the ground |
EP04000766.8A Expired - Lifetime EP1452645B2 (en) | 2003-02-27 | 2004-01-15 | Method for building a diaphragm wall in the ground and trench wall cutting apparatus |
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EP06024531A Expired - Lifetime EP1752583B1 (en) | 2003-02-27 | 2004-01-15 | Trench wall cutting apparatus and method for building a diaphragm wall in the ground |
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US (2) | US7152346B2 (en) |
EP (2) | EP1752583B1 (en) |
JP (1) | JP3761889B2 (en) |
KR (1) | KR100572023B1 (en) |
CN (2) | CN1928262B (en) |
AT (2) | ATE416277T1 (en) |
CA (1) | CA2457229C (en) |
CY (1) | CY1108828T1 (en) |
DE (3) | DE10308538C5 (en) |
DK (1) | DK1752583T3 (en) |
ES (2) | ES2293103T5 (en) |
HK (2) | HK1067393A1 (en) |
PL (1) | PL209264B1 (en) |
PT (2) | PT1752583E (en) |
RU (1) | RU2275469C2 (en) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3081699A1 (en) | 2015-04-14 | 2016-10-19 | Bauer Spezialtiefbau GmbH | Civil engineering device and method for creating a foundation element in the ground |
EP3296468A1 (en) | 2016-09-15 | 2018-03-21 | BAUER Maschinen GmbH | Method and trench cutter for creating a slit in the ground |
EP3919684A1 (en) | 2020-06-04 | 2021-12-08 | BAUER Maschinen GmbH | Excavator and method for creating a slot in the ground |
US11466420B2 (en) | 2020-06-04 | 2022-10-11 | Bauer Maschinen Gmbh | Foundation engineering machine and method for producing a trench in the ground |
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