EP0431710A1 - Anordnung zum Feststellen einer Schliessung - Google Patents

Anordnung zum Feststellen einer Schliessung Download PDF

Info

Publication number
EP0431710A1
EP0431710A1 EP90203231A EP90203231A EP0431710A1 EP 0431710 A1 EP0431710 A1 EP 0431710A1 EP 90203231 A EP90203231 A EP 90203231A EP 90203231 A EP90203231 A EP 90203231A EP 0431710 A1 EP0431710 A1 EP 0431710A1
Authority
EP
European Patent Office
Prior art keywords
fitted
ground
lock
panel
signalling device
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
Application number
EP90203231A
Other languages
English (en)
French (fr)
Other versions
EP0431710B1 (de
Inventor
Karel Frederick Brons
Anthonie Frederick Kool
Willem Jan Lucieer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hollandsche Beton Groep NV
Original Assignee
Hollandsche Beton Groep NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hollandsche Beton Groep NV filed Critical Hollandsche Beton Groep NV
Publication of EP0431710A1 publication Critical patent/EP0431710A1/de
Application granted granted Critical
Publication of EP0431710B1 publication Critical patent/EP0431710B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
    • E02D19/185—Joints between sheets constituting the sealing aprons
    • 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

  • the invention relates to a process for monitoring the closure of two lock halves which are to be brought into engagement with each other, one of which is fitted on a longitudinal edge of a screen panel fitted in the ground, while the other is fitted on a longitudinal edge of a screen panel which is pressed and/or vibrated and/or driven into the ground.
  • the trench is produced, for example, as follows: An H-shaped section is pressed into the ground to a predetermined depth, using a mobile crane and a vibrating device. This section is provided with a filling pipe through which a liquid mixture is pumped, while the H-shaped section is pulled upwards. The space produced through the pulling is thus filled up simultaneously with the mixture. The process is repeated with overlap to form a continuous wall of any desired length. In a second phase the sheet screen is pressed into the liquid-filled wall.
  • the trench can also be produced, for example, by the deep wall system.
  • the liquid mixture can be made hardenable at any desired moment and can be made of, for example, bentonite with water or a mixture of, for example, bentonite, cement and water.
  • Each panel is connected at the bottom side to a steel shoe which is driven into the ground by means of a steel plate.
  • the panels are interconnected by means of the above-mentioned locks to form a liquid-tight screen.
  • the insertion must now take place in such a way that the locks have little or no load placed upon them.
  • the sheet screen or rigid panel must be connected to a watertight layer, for example of a natural clay or an injected synthetic layer. Fitting of a flexible sheet in a trench filled with liquid is much easier then driving rigid panels directly into the ground, also resulting in much lower earth vibrations induced during fitting.
  • the invention is concerned with both types of panels.
  • a major disadvantage is that during the fitting of a screen panel one lock half can come out of the lock half of the already fitted screen panel. This situation can occur if, despite all precautionary measures, the lock halves are too heavily loaded. At rigid panels directly driven into the ground, groundloads as well as an improperly set placing device can tear the lock halves apart. In the first instance at flexible panels this will not be caused by the mixture, which at the time of fitting of the screen is a thin liquid, but too great a load can be placed on the locks if the placing device is not properly set. Thus, if the locking edges of two adjacent screen panels do not engage with each other over the entire height, the liquid leakage in that area will be considerable.
  • the invention makes a contribution to accurate and efficient monitoring of the engagement of the lock halves of two adjacent screen panels with each other.
  • the process mentioned in the introduction is to this end characterized in that signalling devices are fitted in or on said lock halves at one or more points and can indicate that the second lock half is taking up the correct engagement position in the first lock half at the above-mentioned point or points.
  • the signalling devices can be realized in many ways. Due to the fact that the mixture is a thin liquid during the placing of the screen panels, fragile signalling devices can also be used. Use can also be made of upward forces which are characteristic of liquid media. Since the flexible screen panels are made of plastic, use can be made, inter alia, of signalling devices which are based on conductive or electromagnetic action. In contrast with this is the technique of fitting rigid (steel) plates into the ground to form a screen, using considerable larger driving forces which can vary strongly, whereby the type of signalling devices to be used is limited and the material of the screen also limits the applicable signalling methods. Therefore, only few signalling devices mentioned can be used for fitting rigid sheets into the ground.
  • a number of embodiments of signalling devices according to the present invention can produce only one monitoring measurement per placing operation.
  • the most obvious solution is to fit said signalling devices in such a way that the monitoring of the closure of two lock halves to be brought into engagement with each other takes place at the end of the placing operation. If the signalling device shows that the lock halves are not in engagement with each other, then there are two possibilities, viz: the whole panel just fitted must be removed completely, following which the placing operation is carried out again, or an additional seal is provided along said lock over the entire height of the screen.
  • signalling devices can be distributed over the height of the screen panel. This gives the advantage that the correct engagement of the lock halves can be monitored at different places. This means that it is possible to take action already at an early stage, while the risk of places being present where the lock halves do not engage in each other is greatly reduced.
  • the signalling device comprises a long element which is fitted on the panel already placed in the ground, while between the ends said element describes a loop whose shape is lost on passing of the panel which is fitted, or where the loop is conveyed along if the lock halves assume the correct engagement position.
  • Such an element can be extended in such a way that this is noticeable above ground.
  • the element can be used, for example, to transmit force or to conduct electricity, light or a liquid or a gas. If the element guides a force, for example in the form of a rope or cable, the loop must be carried along by the lock half of the screen panel which is being fitted, which is indicated above ground through the fact that the element is being pulled into the ground. In other cases the loop is pulled into a line, causing the flow to be interrupted or the pressure to fall off. By connecting the correct indicating devices to the line above ground, it is possible to establish that the loop loses its shape through passing of the correctly engaging lock half of the screen panel being fitted.
  • Another embodiment of the device according to the invention which is only applicable when initially a trench filled with liquid is made in the ground, makes use of the upward forces which the liquid mixture exerts on bodies immersed in it.
  • This embodiment is characterized by fixing in or on one of the above-mentioned lock halves bodies which are released by the engaging other lock half and then drift upwards through the mixture.
  • Such bodies can be, for example, gas bubbles which are stored in cartridges or, for example, solid or hollow plastic balls such as, for example, table tennis balls.
  • a further embodiment of the device according to the present invention makes use of a transmitter and a receiver.
  • the signal produced by the transmitter and received by the receiver can in this case supply information in different ways. A number of ways will be discussed below with reference to several preferred embodiments.
  • the transmitter can, for example, create a potential field.
  • the receiver can carry out measurements in this potential field, the measured potential varying with the distance from the transmitter. By comparing the received potential with a reference value, it is possible to check whether the placing operation is taking place in the correct manner.
  • the transmitter is fitted in or on one lock half, while the receiver is introduced into or placed on the other lock half. If the two lock halves are engaging in the correct manner, a potential which is different from that when the lock halves are not engaging with each other is measured.
  • Such a device can be achieved in different ways, and a preferred embodiment thereof will be discussed in the description of the figures.
  • the transmitter can create an electromagnetic field on which the receiver carries out measurements.
  • Such device can't be used for steel panels.
  • the signal received will be stronger or weaker depending on the distance between the receiver and the transmitter.
  • Comparison of the signal received with a reference can provide the proof that the two lock halves are engaging with each other in the correct manner.
  • Such a system can be formed in such a way that as the lock halves engage with each other over a greater length of the screen panels the received signal increases. If the lock halves are engaging with each other correctly, this increase must take place according to a predetermined relation.
  • Yet another embodiment of the device according to the present invention in which use is made of a transmitter and a receiver works as follows: If the lock halves are engaging correctly with each other, sound signals will be emitted during the fitting of the screen panel in the ground trench. Such sound signals can be picked up by a microphone fitted on the spot, and recorded above ground. It is possible, on the basis of the length of the part of the screen panel already introduced into the ground, to forecast when the next sound signal will be emitted. If the forecast is not correct, this means that the lock halves are not enga ging with each other correctly. Adequate measures can then be taken.
  • a lock half part which is brought into engagement with the mating lock half of the screen panel already in the ground prior to the engagement of the lock half of the panel to be brought in the ground.
  • This lock half part is connected to a long element extending above ground.
  • the lock half part is moved downwards along the lock half of the panel already fitted in the ground by the lower edge of the panel to be fitted in the ground if the lock halves are engaging correctly with each other.
  • the movement of this lock half part can be monitored e.g. with the aid of a long element connected to the lock half part end extending above ground, disappearing into the ground.
  • the lock half part can be regained when the lower edge of the panel fitted in the ground has a cut-out.
  • Fig. 1 shows a number of screen panels in side view.
  • Fig. 2a shows a top view in cross-section of a lock half provided with a device according to the present invention.
  • Fig. 2b shows in cross-section a variant of the device shown in Fig. 2a.
  • Fig. 3 shows a top view in cross-section of a lock half provided with another device according to the invention.
  • Fig. 4 shows in top view in cross-section a lock half on which according to an embodiment of the present invention floating bodies are fitted.
  • Fig. 5 shows in perspective view the lock halves which are provided with a different embodiment of the present invention.
  • Fig. 6 shows in perspective another embodiment of the present invention which is fitted in the lock halves, a part of one of the lock halves being omitted.
  • Fig. 7 shows in perspective view a lock edge which is provided with an acoustic signalling device.
  • Fig. 8 shows in perspective another embodiment of the present invention using a lock half part.
  • Fig. 1 shows screen panels 1 which are placed in the ground with the lock halves engaging with each other.
  • the righthand screen panel is not yet fully in the ground.
  • the lock halves can be achieved as shown in Fig. 2a, where a male lock half 2 projects into a female lock half 3.
  • a male lock half 2 projects into a female lock half 3.
  • the lock half of the panel to be fitted then moves along the lock half of the fitted panel, while the whole screen panel sinks downwards through weight, pressure, force or vibration.
  • the moving lock half can now be used to put a signalling device into action at predetermined locations. This can be achieved, for example, as shown in Fig. 2a by a rope 4 situated in the lock half of the screen panel already fitted.
  • the rope 4 must now be fitted in such a way that the other lock half, if it is engaging in the correct manner, can carry the rope 4 on its movement downwards or can break it. In this case this is achieved in a simple manner through the fact that the rope 4 crosses the cavity which is enclosed by the female lock half 3.
  • Such a rope can be fitted at different heights in the lock half, but it is preferable to fit the rope in such a way that it is broken or carried along by the other lock half at the end of the fitting operation.
  • Fig. 2b shows how the rope 4 can be fitted on the male lock half 2, with the rope 4 on the outside of the male lock half 2 running along it upwards. In this case the rope 4 moves away from the lock half 2.
  • the female lock half 3 can now extend between the rope 4 and the outside of the lock half, as shown in Fig. 2b. The bottom edge of the female lock half will then carry along the rope 4 where it projects out of the male lock half 2, which proves that the two lock halves are engaging with each other correctly.
  • Fig. 3 shows another way in which a rope 4 can be fitted at a lock half.
  • This method is preferable particularly when the rope 4 has to be fitted on the male lock half 2 and is essentially only applicable when the panels are fitted into a liquid filled trench.
  • the rope 4 in this case is partially supported by a fork 5 comprising a supporting part 6, 6' projecting from the plane of the screen panel and a part 7, 7' extending parallel to the screen.
  • the rope 4 is now placed in a loop in such a way that the female lock half 3 can carry along the line.
  • the rope 4 can be continued running upwards to above ground.
  • the moving lock half will carry along this rope on its movement downwards and this is shown above ground by part of the rope disappearing in the ground.
  • an electrically conducting wire is used instead of rope, then a power source and, for example, a lamp can be connected to these lines at ground level.
  • the downward moving lock half then has to be able to pull the conductor 4 apart, which can be recorded above ground.
  • the conductor 4 can then be connected simply to said conductors 8, 9, which helps to save costs.
  • Fig. 4 shows in another example of an embodiment how floating bodies can be used as the signalling device, when the panels are fitted in a liquid filled trench.
  • balls 10 are fitted on the female lock half 3. These balls are made in such a way that, if they have the freedom to do so, they float upwards through the bentonite mixture. If the other lock half, which in this case is the male lock half 2, is engaging in the correct manner, then this lock half 2 will free all floating bodies in succession to drift towards the surface during its downward movement. In this case an element 11 releases the ball 10 for this purpose. If the lock halves do not project into each other correctly over a certain screen panel height, then the floating bodies situated in this area will remain present.
  • the balls 10 can be, for example, hollow plastic bodies and the like. Causing a gas to develop also falls within the scope of this embodiment.
  • Fig. 5 shows an embodiment of one of the devices within the scope of the present invention. Use is made here of a transmitter and a receiver, the transmitter creating a potential field.
  • the male lock half 2 has fitted in it a wire 12 extending over the full or part of the height of the screen panel.
  • the wire is connected to a pulsating or alternating voltage source. A voltage of at least about 2,000 volts will be necessary in order to create a sufficiently strong potential field.
  • a wire 13 also running over the full or part of the height of the screen panel is fitted in the female lock half 3.
  • the conductor 13 is connected to a device which can measure the strength of the potential at the position of the conductor 13.
  • the measured potential will depend on the distance of the conductor 12 from the conductor 13, and also on the height of the overlapping region of the conductors 13 and 12. If the two lock halves are engaging correctly with each other, the overlapping region of the conductors 13 and 12 will increase during the downward movement of the screen panel with the female lock half 3. The measured potential will consequently show a proportional increase. This proportionality can be checked by using for it the distance over which the screen panel to be fitted has already sunk into the ground. If without the potential field changing the increase in the measured potential no longer keeps pace with the increase in the distance over which the screen panel is situated in the ground, the cause of this must be sought in the change in the distance between the conductors 13 and 12.
  • the conductors 13 and 12 can be different conductors connected in parallel.
  • Fig. 6 shows the possibility for achieving a device which is within the scope of the present invention, in which use is made of a transmitter which creates an electromagnetic field.
  • a transmitter which creates an electromagnetic field.
  • Such device essentially is not applicable for steel panels.
  • Such a transmitter can be fitted in the male lock half 2, as shown, for example, in the figure.
  • the female lock half then contains the receiver.
  • One of the two lock halves is connected to the screen panel already fitted in the ground, while the other is connected to the screen panel to be fitted.
  • the transmitter is formed by a number of parallel conductors 14 extending in line with each other over the full or part of the height of the screen panel.
  • the conductors 14 are now interconnected in such a way at the top and bottom side that a winding pattern is produced, forming a two- dimensional coil with ends 15 and 16.
  • An alternating or pulsating power source is connected to said ends.
  • the recei ver comprises an identically composed two-dimensional coil of conductors 17 with ends 18 and 19.
  • a device which measures the magnetic field strength to which the conductors 17 are exposed can be connected to these ends 18 and 19. The measured signal will vary with the distance between the conductors 14 and 17 and with the length of the overlapping region of the conductors 14 and 17.
  • Fig. 7 shows an example of an embodiment of the present invention where use is made of a transmitter and a receiver in which the transmitter transmits an acoustic signal.
  • the transmitter can in this case comprise a number of sources which in this case are fitted on the male lock half 2.
  • This lock half is fixed on the screen panel already placed in the ground.
  • Spring elements 20 are in this case provided on the lock half. These elements 20 are tensioned.
  • the female lock half 3 of the screen panel to be placed in the ground must now be capable of releasing the springs when the two lock halves are engaging correctly.
  • the springs 20 thereby produce a noise which can be picked up by a microphone 21 fitted in the vicinity.
  • This microphone 21 is located in the ground trench in the vicinity of the screen panel to be fitted, or on said screen panel.
  • spring elements 20 other embodiments are also possible such as, for example, wooden elements which are broken, or the like.
  • the transmitters of the acoustic signal can also be fitted on the female lock half, and they can even be fitted in such a way that other elements of the screen panel which are, for example, fitted specially for this purpose put the transmitters into operation.
  • fig. 8 shows an embodiment in which a lock half part 22 is used.
  • this lock half part 22 is a male lock half.
  • This part 22 is inserted from above into the female lock half 3 of the panel already fitted in the ground, prior to insertion of male lock half 2 of the panel to be fitted in the ground.
  • the lock half part 22 will be driven along the female lock half 3 by the lower edge of the male lock half 2 moving downwards.
  • a rope 23 connected to the downwards moving lock half piece 22 and extending above ground will be pulled into the ground, which shows if the engagement of lock halves 2, 3 is adequately.
  • the lock half part 22 will not be driven downwards so the rope 23 is not pulled into the ground, and adequate steps can be taken.
  • the lock half part 22 has entered the lower edge of the female lock half 3, as shown. Thanks to the cut-out 24 at the lower edge of the panel which was already fitted in the ground, the lock half part 22 can be withdrawn from the female lock half 3 and can be pulled up above ground using rope 23.
EP19900203231 1989-12-08 1990-12-07 Anordnung zum Feststellen einer Schliessung Expired - Lifetime EP0431710B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8903027 1989-12-08
NL8903027A NL8903027A (nl) 1989-12-08 1989-12-08 Slotcontrolesysteem.

Publications (2)

Publication Number Publication Date
EP0431710A1 true EP0431710A1 (de) 1991-06-12
EP0431710B1 EP0431710B1 (de) 1994-06-01

Family

ID=19855763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900203231 Expired - Lifetime EP0431710B1 (de) 1989-12-08 1990-12-07 Anordnung zum Feststellen einer Schliessung

Country Status (3)

Country Link
EP (1) EP0431710B1 (de)
DE (1) DE69009411T2 (de)
NL (1) NL8903027A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301637A (nl) * 1993-09-22 1995-04-18 Tijmen Van Halteren Werkwijze voor het slaan van een damwand.
NL9301636A (nl) * 1993-09-22 1995-04-18 Tijmen Van Halteren Werkwijze voor het slaan van een damwand.
EP0855472A1 (de) * 1997-01-24 1998-07-29 Van Splunder Funderingstechniek B.V. Verfahren zum Installieren einer Schirmwand im Boden
NL1018647C2 (nl) * 2001-07-27 2003-01-28 Hoffmann Bodemtech Slotcontrole-inrichting.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE224559C (de) *
NL7908262A (nl) * 1979-11-12 1981-06-01 Hollandsche Betongroep Nv Werkwijze voor het in de grond heien van damplanken en het afdichten van de damwand alsmede inrichting voor het toepassen van de werkwijze.
EP0141463A2 (de) * 1983-10-25 1985-05-15 Hollandsche Beton Groep N.V. Spundbohle mit Signalvorrichtung
DE3540270A1 (de) * 1985-11-13 1987-05-14 Wayss & Freytag Ag Verfahren zur herstellung einer dichtwand und vorrichtung zur durchfuehrung des verfahrens
NL8603243A (nl) * 1986-12-19 1988-07-18 Hattum & Blankevoort Bv Werkwijze voor het controleren van de positie van een damwandplank alsmede damwandplank voor het uitvoeren van de werkwijze.
EP0286068A1 (de) * 1987-04-06 1988-10-12 SLT LINING TECHNOLOGY GmbH Sickersperrwand

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE224559C (de) *
NL7908262A (nl) * 1979-11-12 1981-06-01 Hollandsche Betongroep Nv Werkwijze voor het in de grond heien van damplanken en het afdichten van de damwand alsmede inrichting voor het toepassen van de werkwijze.
EP0141463A2 (de) * 1983-10-25 1985-05-15 Hollandsche Beton Groep N.V. Spundbohle mit Signalvorrichtung
DE3540270A1 (de) * 1985-11-13 1987-05-14 Wayss & Freytag Ag Verfahren zur herstellung einer dichtwand und vorrichtung zur durchfuehrung des verfahrens
NL8603243A (nl) * 1986-12-19 1988-07-18 Hattum & Blankevoort Bv Werkwijze voor het controleren van de positie van een damwandplank alsmede damwandplank voor het uitvoeren van de werkwijze.
EP0286068A1 (de) * 1987-04-06 1988-10-12 SLT LINING TECHNOLOGY GmbH Sickersperrwand

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301637A (nl) * 1993-09-22 1995-04-18 Tijmen Van Halteren Werkwijze voor het slaan van een damwand.
NL9301636A (nl) * 1993-09-22 1995-04-18 Tijmen Van Halteren Werkwijze voor het slaan van een damwand.
EP0855472A1 (de) * 1997-01-24 1998-07-29 Van Splunder Funderingstechniek B.V. Verfahren zum Installieren einer Schirmwand im Boden
NL1018647C2 (nl) * 2001-07-27 2003-01-28 Hoffmann Bodemtech Slotcontrole-inrichting.
EP1279772A1 (de) * 2001-07-27 2003-01-29 Hoffmann Bodemtechnieken B.V. Anordnung zum Feststellen einer Schliesseinrichtung

Also Published As

Publication number Publication date
EP0431710B1 (de) 1994-06-01
DE69009411T2 (de) 1994-12-22
DE69009411D1 (de) 1994-07-07
NL8903027A (nl) 1991-07-01

Similar Documents

Publication Publication Date Title
US3999392A (en) Method of constructing a wall for supporting earth
US3911688A (en) Pipe apparatus for the collection of petroleum from deep water wells
US4927297A (en) Leak prevention structure, method and apparatus
EP0431710A1 (de) Anordnung zum Feststellen einer Schliessung
US20080286055A1 (en) Supporting Member, Retaining Wall Structure Having the Same and Building Method Thereof
JPH0768705B2 (ja) 土留方法とその土留杭
JP4989266B2 (ja) 築堤の構築装置および築堤の構築方法
JP2016079705A (ja) 計測機器の埋設方法
JP7465098B2 (ja) 流動化処理土の付着強度評価方法
US4974379A (en) Textural break foundation wall construction modules
JPH0533344A (ja) モルタル液面検出法及びモルタル液面計
JP2005061171A (ja) 杭基礎の杭頭構造及び杭基礎の杭頭の施工方法
KR102249723B1 (ko) 수직도 조절이 가능한 대구경 해상 강관 파일 시공방법
CN111042107B (zh) 一种大尺寸预制桩围护结构施工系统及施工方法
JP4778460B2 (ja) 鋼板セルの据付方法および据付構造
SU861477A1 (ru) Способ определени глубины погружени железобетонной сваи в грунт
JP3831898B2 (ja) 地下構造物の調査孔、および調査孔の作成方法
JP2004183427A (ja) 土留め壁板支持構造
JPS598835A (ja) 根入れ式鋼板セル・ケ−ソン工法
JP3283490B2 (ja) 沈設物の位置確認方法および装置
Foray et al. Ultimate pullout capacity of SBM’s Vertically Loaded Plate Anchor (VELPA) in deep sea sediments
JP2004339846A (ja) 沈埋函及び充填材の充填装置及び沈埋函の基礎の構築方法
JP2900170B2 (ja) 地下空洞の測距方法及び測距装置
JP2021195826A (ja) 層別沈下計の設置方法
JP2004286464A (ja) ベンダーエレメント設置フレーム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE GB LU NL

17P Request for examination filed

Effective date: 19910528

17Q First examination report despatched

Effective date: 19920701

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB LU NL

REF Corresponds to:

Ref document number: 69009411

Country of ref document: DE

Date of ref document: 19940707

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19991213

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001207

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041201

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20041202

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20041231

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20050704

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060701

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051207

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20060701

BERE Be: lapsed

Owner name: HOLLANDSCHE *BETON GROEP N.V.

Effective date: 20051231