EP0855472A1 - Method of installing a cut-off wall in the soil - Google Patents
Method of installing a cut-off wall in the soil Download PDFInfo
- Publication number
- EP0855472A1 EP0855472A1 EP98200213A EP98200213A EP0855472A1 EP 0855472 A1 EP0855472 A1 EP 0855472A1 EP 98200213 A EP98200213 A EP 98200213A EP 98200213 A EP98200213 A EP 98200213A EP 0855472 A1 EP0855472 A1 EP 0855472A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- screen wall
- sensor element
- conversion
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
Definitions
- a screen wall 10 in the floor As shown schematically is shown in the view of Figure 2, for Example of prefabricated screen wall elements in sequence let down into the floor 11, one each following Screen wall element 3 with its longitudinal edge 4 in the longitudinal edge 2 of the previous one, already embedded in the floor, on it subsequent screen wall element 1 engages; first only with its lower end, and with increasing introduction into the ground in the direction of the arrow over an ever larger one Length.
- a screen wall is, for example, many meters deep and, for example, connects to one with its lower edge waterproof layer, for example a natural one Clay layer.
- a screen wall element is preferably on both Long sides with profiling for mutual intervention equipped and, for example, resistant to bending, such as one steel sheet piling, or bendable, like one Foil.
- a screen wall is preferably made of one or more Groups of uniform screen wall elements built, the for example rammed into the ground, shaken or pressed will.
- a combination wall is made of vertical tubular and sheet metal parts built.
- the sensor means include Solenoid.
- That the signal led over a wire to the surface of the earth has a number of disadvantages, such as: protecting the This wire must be fastened to the sheet piling plate Steel pipe are performed, which is insufficient Protection from melting by frictional heat during in particular of the vibrating process, so that the wire is still there has to be packed in, for example, an artificial foam, whereby the wires have to be laid in the workshop. Also through the above disadvantages is the application of a Sensor means relatively expensive, if not impossible.
- a purpose of the invention is to use sensor means to make it cheaper. Another purpose is that To make application of sensor means more reliable. A Another purpose is to recover sensor media enable or make it more reliable. A another purpose is the need to connect and / or the disassembly of valuable wiring do.
- the invention realizes at least one of the purposes of the signals of the sensor means wirelessly to the Bring the surface of the earth, for which the signals are preferred first converted into a signal to be transmitted by transmission means will.
- a wave signal is preferred an ultrasound signal is sent to the earth's surface, although electromagnetic waves, like radar waves, are usable.
- the signal can be electrical Include current or voltage pulses, for example if the Soil has sufficient galvanic conductivity.
- the floor can be the screen wall element as a conduction medium be used.
- the signal to be transmitted wirelessly preferably with a local one, for example with a battery or Battery powered transmitter generated.
- the transmitter can also be Take energy from the environment, for example when the sensor reacted to a potential field.
- the sensor like a solenoid, is also preferably powered locally, preferably with the same energy source as that of the transmitter.
- the Sensor means and the sending means can be an integral part be mounted on the screen wall element.
- the sensor means can for example be a magnetic switch or comprise a solenoid or one on a potential field based sensor, for example around the longitudinal edge of the a screen wall element a potential field of suitable Averaging is generated while the potential field sensor on the cooperating longitudinal edge of the other screen wall element is fixed and detects deviations in the potential field, which can be an indication that the longitudinal edges are not correctly interlock.
- Another alternative sensor means is for example a power wire that is broken as in NL-A-7908262, so that a circuit is interrupted whereby the transmitter sends a signal. It goes without saying that the remote receiver on the Transmitter can be tuned.
- the transmitter can be of the type be in which two types of pulse are emitted; the one Pulse type, which indicates that the profiles interlock well, while the other indicates that the opposite is the case.
- Figure 1 shows two interlocking edge profiles of Screen wall elements in top view.
- Element 1 is already there inserted in the ground and has a profile 2; element 3 is introduced and has a profile 4.
- 5 is a protective strip to 1, which can be omitted if necessary.
- 6 is a Proximity switch and transmitter about 50 cm from the lower edge of the element 3, and is with threaded connector 9 in the threaded hole 7 is screwed in and has on its underside a shield plate 8.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Um im Boden eine Schirmwand 10 zu erstellen, wie dies schematisch in der Ansicht von Figur 2 dargestellt ist, werden zum Beispiel vorgefertigte Schirmwandelemente der Reihe nach abwärts in den Boden 11 eingelassen, wobei jeweils ein folgendes Schirmwandelement 3 mit seinem Längsrand 4 in den Längsrand 2 des vorigen und schon in den Boden eingelassenen, daran anschließenden Schirmwandelements 1 eingreift; zunächst lediglich mit seinem unteren Ende, und mit zunehmender Einführung in den Boden in Pfeilrichtung über eine immer größere Länge. Eine Schirmwand steckt zum Beispiel viele Meter tief und schließt zum Beispiel mit ihrem unteren Rand an eine wasserundurchlässige Schicht an, zum Beispiel eine natürliche Tonschicht. Ein Schirmwandelement ist vorzugsweise an beiden Längsseiten mit Profilierung zum gegenseitigen Eingreifen ausgestattet und zum Beispiel verbiegungssteif, wie eine stählerne Spundwandplatte, oder verbiegungsfähig, wie eine Folie. Eine Schirmwand ist vorzugsweise aus einer oder mehreren Gruppen gleichförmiger Schirmwandelemente aufgebaut, die zum Beispiel in den Boden gerammt, gerüttelt oder gepreßt werden. Zum Beispiel ist eine Kombinationswand aus senkrechten rohr- und blechförmigen Teilen aufgebaut. Bekannt ist zum Beispiel aus NL-A-7908262, daß das gegenseitige Anschließen von Spundwandplatten mit Sensormitteln zu überprüfen, die an dem unteren Ende einer Spundwandplatte befestigt sind und über elektrisch leitende Drähte ihre Signal zur Erdoberfläche bringen. Nach NL-B-191614 umfassen die Sensormittel ein Solenoid. Die Offenbarung und die Einsicht dieser beiden Dokumente ist hier durch Bezugnahme aufgenommen, und nach der vorliegenden Erfindung auch auf andere Schirmwände anwendungsfähig, wie auf Schirmwände aus Folie. Nach der Erfindung können die Sensormittel sich auch an einer anderen Stelle als in der Nähe des unteren Randes des Schirmwandelements befinden.To create a screen wall 10 in the floor, as shown schematically is shown in the view of Figure 2, for Example of prefabricated screen wall elements in sequence let down into the floor 11, one each following Screen wall element 3 with its longitudinal edge 4 in the longitudinal edge 2 of the previous one, already embedded in the floor, on it subsequent screen wall element 1 engages; first only with its lower end, and with increasing introduction into the ground in the direction of the arrow over an ever larger one Length. A screen wall is, for example, many meters deep and, for example, connects to one with its lower edge waterproof layer, for example a natural one Clay layer. A screen wall element is preferably on both Long sides with profiling for mutual intervention equipped and, for example, resistant to bending, such as one steel sheet piling, or bendable, like one Foil. A screen wall is preferably made of one or more Groups of uniform screen wall elements built, the for example rammed into the ground, shaken or pressed will. For example, a combination wall is made of vertical tubular and sheet metal parts built. Is known for Example from NL-A-7908262 that the mutual connection of sheet piles with sensor means to check the the lower end of a sheet piling are attached and over electrically conductive wires send their signal to the earth's surface bring. According to NL-B-191614, the sensor means include Solenoid. The revelation and the insight of these two Document is incorporated here by reference, and according to the present invention also applicable to other screen walls, like on screen walls made of foil. According to the invention the sensor means can also be located at a location other than located near the lower edge of the screen wall element.
Daß das Signal über einen Draht zur Erdoberfläche geführt wird, hat eine Reihe von Nachteilen, wie: zum Schutze des Drahtes muß dieser durch ein an der Spundwandplatte befestigtes Stahlrohr geführt werden, was allerdings unzureichenden Schutz vor dem Schmelzen durch Reibungswärme während insbesondere des Rüttelverfahrens bietet, so daß der Draht auch noch in zum Beispiel einem Kunstschaum verpackt werden muß, wodurch die Drähte in der Werkstatt verlegt werden müssen. Auch durch die vorstehend genannten Nachteile ist die Anwendung eines Sensormittels relativ kostspielig, wenn nicht sogar unmöglich.That the signal led over a wire to the surface of the earth has a number of disadvantages, such as: protecting the This wire must be fastened to the sheet piling plate Steel pipe are performed, which is insufficient Protection from melting by frictional heat during in particular of the vibrating process, so that the wire is still there has to be packed in, for example, an artificial foam, whereby the wires have to be laid in the workshop. Also through the above disadvantages is the application of a Sensor means relatively expensive, if not impossible.
Ein Zweck der Erfindung ist es, die Anwendung von Sensormitteln preiswerter zu machen. Ein anderer Zweck ist der, die Anwendung von Sensormitteln zuverlässiger zu machen. Ein weiterer Zweck ist der, die Rückgewinnung von Sensormitteln zu ermöglichen beziehungsweise zuverlässiger zu machen. Ein weiterer Zweck ist der, die Notwendigkeit des Anschließens und/oder des Demontierens kostbarer Verkabelung überflüssig zu machen.A purpose of the invention is to use sensor means to make it cheaper. Another purpose is that To make application of sensor means more reliable. A Another purpose is to recover sensor media enable or make it more reliable. A another purpose is the need to connect and / or the disassembly of valuable wiring do.
Die Erfindung realisiert wenigstens einen der Zwecke, indem die Signale der Sensormittel drahtlos beispielsweise an die Erdoberfläche gebracht werden, wozu die Signale vorzugsweise zunächst in ein von Sendemitteln auszusendendes Signal umgewandelt werden. Vorzugsweise wird ein Wellensignal, vorzugsweise ein Ultraschallsignal an die Erdoberfläche gesandt, obwohl auch elektromagnetische Wellen, wie Radarwellen, brauchbar sind. Gegebenenfalls kann das Signal elektrische Strom- oder Spannungspulse umfassen, zum Beispiel wenn der Boden ausreichende galvanische Leitfähigkeit aufweist. Statt des Bodens kann das Schirmwandelement als Leitungsmedium genutzt werden. Das drahtlos zu übermittelnde Signal wird vorzugsweise mit einem lokal, zum Beispiel mit Akku oder Batterie versorgten Sender erzeugt. Auch kann der Sender seine Energie der Umgebung entnehmen, zum Beispiel wenn der Sensor auf ein Potentialfeld reagiert. Der Sensor, wie ein Solenoid, wird ebenfalls vorzugsweise lokal mit Strom versorgt, vorzugsweise mit derselben Energiequelle wie die des Senders. Die Sensormittel und die Sendemittel können als integrales Teil auf dem Schirmwandelement montiert sein.The invention realizes at least one of the purposes of the signals of the sensor means wirelessly to the Bring the surface of the earth, for which the signals are preferred first converted into a signal to be transmitted by transmission means will. Preferably a wave signal is preferred an ultrasound signal is sent to the earth's surface, although electromagnetic waves, like radar waves, are usable. If necessary, the signal can be electrical Include current or voltage pulses, for example if the Soil has sufficient galvanic conductivity. Instead of of the floor can be the screen wall element as a conduction medium be used. The signal to be transmitted wirelessly preferably with a local one, for example with a battery or Battery powered transmitter generated. The transmitter can also be Take energy from the environment, for example when the sensor reacted to a potential field. The sensor, like a solenoid, is also preferably powered locally, preferably with the same energy source as that of the transmitter. The Sensor means and the sending means can be an integral part be mounted on the screen wall element.
Die Sensormittel können zum Beispiel einen Magnetschalter oder ein Solenoid umfassen oder einen auf einem Potentialfeld basierenden Sensor, wobei zum Beispiel um den Längsrand des einen Schirmwandelements ein Potentialfeld von dazu geeigneten Mitteln erzeugt wird, während der Potentialfeldsensor an dem zusammenwirkenden Längsrand des anderen Schirmwandelements befestigt ist und Abweichungen in dem Potentialfeld erfaßt, was ein Hinweis darauf sein kann, daß die Längsränder nicht korrekt ineinander fassen. Ein weiteres alternatives Sensormittel ist zum Beispiel ein Stromdraht, der unterbrochen wird, wie nach NL-A-7908262, so daß ein Stromkreis unterbrochen wird, wodurch der Sender ein Signal sendet. Es ist selbstverständlich, daß der in Entfernung befindliche Empfänger auf den Sender abgestimmt werden kann. Der Sender kann einer des Typs sein, bei dem zwei Pulsarten ausgestrahlt werden; die eine Pulsart, die angibt, daß die Profile gut ineinandergreifen, während die andere angibt, daß das Gegenteil der Fall ist.The sensor means can for example be a magnetic switch or comprise a solenoid or one on a potential field based sensor, for example around the longitudinal edge of the a screen wall element a potential field of suitable Averaging is generated while the potential field sensor on the cooperating longitudinal edge of the other screen wall element is fixed and detects deviations in the potential field, which can be an indication that the longitudinal edges are not correctly interlock. Another alternative sensor means is for example a power wire that is broken as in NL-A-7908262, so that a circuit is interrupted whereby the transmitter sends a signal. It goes without saying that the remote receiver on the Transmitter can be tuned. The transmitter can be of the type be in which two types of pulse are emitted; the one Pulse type, which indicates that the profiles interlock well, while the other indicates that the opposite is the case.
Die Figur 1 zeigt zwei ineinanderfassende Randprofile von
Schirmwandelementen in der Draufsicht. Das Element 1 ist schon
in den Boden eingeführt und hat ein Profil 2; das Element 3
wird eingeführt und hat ein Profil 4. 5 ist ein Schutzstreifen
an 1, der gegebenenfalls ausgelassen werden kann. 6 ist ein
Näherungsschalter und Sender in etwa 50 cm Entfernung vom
unteren Rand des Elements 3, und ist mit Gewindestutzen 9 in
das Gewindeloch 7 eingeschraubt und hat an seiner Unterseite
eine Abschirmungsplatte 8.Figure 1 shows two interlocking edge profiles of
Screen wall elements in top view. Element 1 is already there
inserted in the ground and has a profile 2; element 3
is introduced and has a profile 4. 5 is a protective strip
to 1, which can be omitted if necessary. 6 is a
Proximity switch and transmitter about 50 cm from the
lower edge of the element 3, and is with threaded
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1005083 | 1997-01-24 | ||
NL1005083 | 1997-01-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0855472A1 true EP0855472A1 (en) | 1998-07-29 |
Family
ID=19764272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98200213A Withdrawn EP0855472A1 (en) | 1997-01-24 | 1998-01-26 | Method of installing a cut-off wall in the soil |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0855472A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7908262A (en) | 1979-11-12 | 1981-06-01 | Hollandsche Betongroep Nv | Piling plant for shuttering planks of dam - has wall seal with slotted edges with male and female sections mating with sealing rod activating signal generator |
NL8603243A (en) * | 1986-12-19 | 1988-07-18 | Hattum & Blankevoort Bv | Checking position of dam wall plates - generating magnetic field by solenoid to check deviation indicated by lamp in electric circuit revealing interruptions |
FR2646188A1 (en) * | 1989-04-24 | 1990-10-26 | Soletanche | Method for monitoring the engagement of sealing membranes and sealing membranes for the implementation of this method |
EP0431710A1 (en) * | 1989-12-08 | 1991-06-12 | Hollandsche Beton Groep N.V. | Lock monitoring system |
-
1998
- 1998-01-26 EP EP98200213A patent/EP0855472A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7908262A (en) | 1979-11-12 | 1981-06-01 | Hollandsche Betongroep Nv | Piling plant for shuttering planks of dam - has wall seal with slotted edges with male and female sections mating with sealing rod activating signal generator |
NL8603243A (en) * | 1986-12-19 | 1988-07-18 | Hattum & Blankevoort Bv | Checking position of dam wall plates - generating magnetic field by solenoid to check deviation indicated by lamp in electric circuit revealing interruptions |
NL191614B (en) | 1986-12-19 | 1995-07-03 | Hattum & Blankevoort Bv | Method for checking the placement of sheet piles when placing a sheet pile wall and sheet pile in the ground before carrying out the method. |
FR2646188A1 (en) * | 1989-04-24 | 1990-10-26 | Soletanche | Method for monitoring the engagement of sealing membranes and sealing membranes for the implementation of this method |
EP0431710A1 (en) * | 1989-12-08 | 1991-06-12 | Hollandsche Beton Groep N.V. | Lock monitoring system |
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