EP0329500A1 - Verfahren und Einrichtung zur Bodenkonsolidierung - Google Patents

Verfahren und Einrichtung zur Bodenkonsolidierung Download PDF

Info

Publication number
EP0329500A1
EP0329500A1 EP89400217A EP89400217A EP0329500A1 EP 0329500 A1 EP0329500 A1 EP 0329500A1 EP 89400217 A EP89400217 A EP 89400217A EP 89400217 A EP89400217 A EP 89400217A EP 0329500 A1 EP0329500 A1 EP 0329500A1
Authority
EP
European Patent Office
Prior art keywords
layer
water
drains
permeable material
permeable
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
EP89400217A
Other languages
English (en)
French (fr)
Other versions
EP0329500B1 (de
Inventor
Jean-Marie Cognon
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.)
Menard-Soltraitement SA
Menard Soltraitement
Original Assignee
Menard-Soltraitement SA
Menard Soltraitement
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 Menard-Soltraitement SA, Menard Soltraitement filed Critical Menard-Soltraitement SA
Priority to AT89400217T priority Critical patent/ATE75273T1/de
Publication of EP0329500A1 publication Critical patent/EP0329500A1/de
Application granted granted Critical
Publication of EP0329500B1 publication Critical patent/EP0329500B1/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
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • 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
    • E02D19/10—Restraining of underground water by lowering level of ground water

Definitions

  • the invention relates to the consolidation of soft soils with low permeability, impregnated with water.
  • the layer of soil to be treated for example a layer 1 of soft clay about twenty meters thick resting on a layer 2 of subsoil overlying, a layer 3 of embankment, for example pebbles or earth, thus loading the site to be built.
  • the backfill brings to the ground a pressure constraint generally higher than that of the planned construction.
  • the presence of the embankment causes a compaction of layer 1, forcing the water contained in this layer to escape according to a general path indicated by arrows 4.
  • drains 5 shown vertical in FIG. 2.
  • These drains can be constituted for example by drilling small diameters filled with sand, in a fairly tight mesh, for example from 2 to 8 meters.
  • the layer 1 is loaded by the embankment 3, as before.
  • drains formed from porous plastic tubes with an internal diameter of the order of 50 mm.
  • backfill loading techniques posed a certain number of problems, and in particular - backfill stability problems, - recovery of backfill materials, often expensive, sometimes difficult to obtain, and - placement and removal of embankments, taking into account the relatively large volumes of materials generally required.
  • sand As a permeable material, sand is usually provided, which is deposited on the ground in a layer of about 20 to 60 cm thick, and in this mass of sand, a vacuum of around 60 is established. at 80 kPa. As can be understood, the load applied on the ground depends on the surface thus covered.
  • a channel 11 which is hollowed out at the periphery of the zone to be treated and then filled with a fluid material, such as a bentonite mud, in which one comes to drown the outer edges 9a of the membrane.
  • drains which have been again identified 5, these will be of the same type as those previously described. They always open at the top at the level of layer 8 of permeable material.
  • the subject of the invention is precisely a new method of consolidating soft, low-permeability soil impregnated with water, of the type in which a partial air vacuum is established in a layer of permeable material surmounted by a membrane. airtight waterproofing and covering the area of land to be consolidated on the surface, a mesh network of hollow drains with permeable walls sinking into the ground is created in the ground and stopping before entering a sub- layer of permeable soil and said drains are unblocked at the level of the layer of permeable material in question.
  • each drain is fitted with a hollow tube connected to an external means for discharging water, such as a pump, said tubes descending into the drains for the most part. the height of the latter with which they communicate in the lower part, and said external evacuation means are controlled, so as to evacuate on the surface, outside the drains, the water which will have accumulated there.
  • the suction tubes will pass under this membrane or pass through it sealingly.
  • the external means of evacuation will preferably be controlled intermittently, when water may have accumulated in the drains.
  • a suction pump of the "vacuum pump” type, is used as the means for discharging the water, the maintenance of the permeable material under partial air will be interrupted during the time interval during which said suction pump will be controlled.
  • the period during which the vacuum maintenance will be interrupted partial of the layer of permeable material and where the suction pump will be controlled will be about half an hour, with a periodicity of once or twice every twenty-four hours.
  • a characteristic of the invention provides that in addition to the pressure constraint exerted on the area of land to be consolidated by the partial vacuum of the layer of permeable material. , one comes to exert on the zone in question an additional pressure by placing on it, on the surface, a distributed load, such as a load of water or fill materials.
  • the invention also relates to a device for implementing this process, characterized in that it comprises, to equip each drain, a hollow tube which opens at its lower end onto a cage of water inlet open on the drain and in which a float is held captive, a valve capable of closing the lower end of said tube when the water contained in the drain reaches a level lower than that of the float, all the tubes being connected to the same suction pump arranged on the surface for the evacuation of water.
  • sensors of all known types will also be arranged towards the bottom of at least some of the drains, at the lower end of the tubes, and connected to the pump control means, in order to stop the latter. once the drains are emptied of their water.
  • drains 13 constituted for example by porous plastic sheaths, strainer tubes, that is to say perforated, or others.
  • These drains 13 form wells having a diameter of the order of 50 mm and stop at a certain distance above the draining layer 12 which they must not reach.
  • the network mesh can respect a distance between drains for example from 4 to 6 meters. In practical, the denser the mesh, the faster the consolidation can be.
  • the drains 13 open into a surface layer 14 of relatively thin permeable material, such as a mass of sand about 30 to 50 cm thick, which has been extended substantially over the entire surface of the zone of land to consolidate.
  • the layer 14 is covered with a tarpaulin or membrane 15 of synthetic material which is substantially airtight, at least in air, the outer peripheral edges 15a of which are immersed in a channel 16 filled with a material sufficiently viscous to hold the edges in position of the membrane and ensure its tightness.
  • a conduit 17 connected to a means of evacuating water such as a "vacuum” suction pump 18 of the liquid ring type, so that it is possible to establish under the membrane.
  • a partial air vacuum of the order of 60 to 80 kPa.
  • the conduit 17 will come out of the membrane without adversely affecting the seal.
  • each drain 13 inside each drain 13, a tube 19 of smaller diameter will be lowered, such as a plastic tube of the polyamide type of approximately 4 to 8 mm in diameter.
  • these tubes are in communication with the drains and, in practice, will descend in the latter to approximately 1 to 2 meters from the bottom, so as to terminate at a level higher than the deposit layer 20 of various materials. which generally forms at the bottom of drains.
  • Each tube 19 is essentially connected to the surface to a common flexible conduit 21, itself connected to an external means for discharging water, which, in the example illustrated, is the vacuum pump 18 which serves to maintain the partial vacuum in layer 14 of permeable material.
  • switching means shown diagrammatically 28, are provided, controlled by a control unit, marked 38, allowing the pump to suck through either the conduit 17 or the conduit 21.
  • This lower part is bent upwards in the shape of a hook and ends in a cage 22 open on the drain, in which cage the tube opens out through an orifice 23.
  • a float 24 mounted movable in the cage and equipped with a valve or a ball 25 capable of closing the orifice 23.
  • the switching means 28 is controlled so that the pump 18 ensures the depression of the layer 14.
  • a pressure of about 60 to 80 kPa therefore prevails in this layer and in the non-submerged part of the drains 13.
  • the conduit 21 is substantially at atmospheric pressure.
  • a level sensor 30 such as a contactor connected to an electrical supply means (not shown) and which may have been fixed to the tube 19.
  • This sensor 30 which is also connected (not shown) to the pump control unit 38 triggers the switching of this pump, the connection of which "switches" from line 17 to line 21.
  • Maintaining the partial vacuum of layer 14 is therefore temporarily interrupted.
  • a pressure lower than that which prevails in the layer 14 and at the top of the drains 13 is then established in the tubes 19 to stabilize in general around 60 to 80 kPa.
  • the water contained in the drains is then sucked through the openings of the cage 22, passes through the orifice 23 and rises in the tubes to be evacuated on the surface, outside the membrane 15.
  • another level sensor 31 such as an electrical sensor connected to its supply means (not shown) as well as to the unit 38 pump 18, so that as soon as this sensor 31 is no longer immersed in water, the pump again "switches” from line 21 to line 17 and thus restores the partial vacuum in the layer 14.
  • FIG. 6 first of all, provision has been made to deposit directly on the layer 1 of ground, a layer of backfill 32 which has been covered with the layer 14 of permeable material surmounted by its membrane 15 whose outer edges 15a plunge into the peripheral sealing channel 16.
  • the drains 13 pass through the layer 1 to be treated, but also through the backfill layer 32 to open out under the layer 14 in which, as before, partial vacuum has been established.
  • FIG. 8 illustrates a third possibility of additional loading.
  • the bottom of the bowl and the merlon 33 were covered with the layer 14 of permeable material which was itself covered with its sealing membrane 15.
  • the bowl 34 thus formed was filled with a liquid 35, such as water, so as to ensure an additional loading of the ground, in the manner of the embankment of FIGS. 6 and 7.
  • a waterproof membrane will be chosen.
  • FIGS. 6 to 8 are also provided with means for discharging water from the drains.
  • each drain could be equipped, towards its base, with a discharge pump which can be controlled from the surface continuously or intermittently, cyclically, by means of a compressed air duct connected to a compressor for evacuating on the surface, by an annex discharge pipe, the water collected at the bottom of the drains (not shown).
  • Such a device is well known, in particular from patent FR-A-2 564 500 to which reference may be made, and in which is described a pump essentially comprising a cylindrical body of diameter generally equivalent to that of the drains, an inlet valve. of water mounted on the body in question and allowing the entry of overpressure water into the body, a flexible compressed air supply duct connected to said body and to a ground compression station, and a chamber accumulation of water formed in said body, which chamber is connected through a non-return valve to another flexible conduit for discharging the water back up, through the drain, to the surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Soil Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Paper (AREA)
EP89400217A 1988-02-15 1989-01-26 Verfahren und Einrichtung zur Bodenkonsolidierung Expired - Lifetime EP0329500B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89400217T ATE75273T1 (de) 1988-02-15 1989-01-26 Verfahren und einrichtung zur bodenkonsolidierung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801757 1988-02-15
FR8801757A FR2627202B1 (fr) 1988-02-15 1988-02-15 Procede et dispositif de consolidation de terrains

Publications (2)

Publication Number Publication Date
EP0329500A1 true EP0329500A1 (de) 1989-08-23
EP0329500B1 EP0329500B1 (de) 1992-04-22

Family

ID=9363260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89400217A Expired - Lifetime EP0329500B1 (de) 1988-02-15 1989-01-26 Verfahren und Einrichtung zur Bodenkonsolidierung

Country Status (4)

Country Link
EP (1) EP0329500B1 (de)
AT (1) ATE75273T1 (de)
DE (1) DE68901277D1 (de)
FR (1) FR2627202B1 (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663373A1 (fr) * 1990-06-18 1991-12-20 Cognon Jean Marie Procede et dispositif pour etablir une depression dans une zone de terrain permeable isolee de l'atmosphere par une membrane etanche.
EP0505011A1 (de) * 1991-03-22 1992-09-23 Oosterhof Holman Milieutechniek B.V. Verfahren und Vorrichtung zur Reinigung eines kontaminierten Grundstückbereiches
EP0608928A1 (de) * 1993-01-25 1994-08-03 Funderingstechnieken Verstraeten B.V. Verfahren zur beschleunigten Bodenkonsolidierung
WO1998023819A1 (fr) * 1996-11-25 1998-06-04 Robinet Jean Claude Dispositif de consolidation hydrique des sols
EP0884418A2 (de) * 1997-06-10 1998-12-16 APPLICATION OF CLEANING TECHNIQUES ON SOILS, in het kort SOILS Vorrichtung zur Absenkung des Grundwasserspiegels oder zur Entfernung von Schwimmschichten
NL1008617C2 (nl) * 1998-03-17 1999-09-20 Hollandsche Betongroep Nv Werkwijze voor het consolideren van een waterhoudende grondlaag, zoals een klei- of veenhoudende laag.
WO1999047756A1 (en) * 1998-03-17 1999-09-23 Hollandsche Beton Groep N.V. Consolidation method for soil layers with low permeability
WO1999063164A1 (en) * 1998-06-02 1999-12-09 Isis Innovation Limited A method and apparatus for consolidation of sedimentary beds
WO2000050696A1 (en) * 1999-02-25 2000-08-31 Menard Soltraitement An equipment and a method for partially drying a zone of ground containing a liquid
NL1023555C2 (nl) * 2003-05-28 2004-12-03 Bos & Kalis Baggermaatsch Werkwijze en samenstel voor het onttrekken of toevoeren van stoffen uit/aan een bodemlichaam.
KR100463314B1 (ko) * 2002-07-12 2004-12-29 김윤상 물을 재하 하중으로 이용한 대규모 부지의 연약지반개량공법
US7198430B2 (en) * 2002-10-31 2007-04-03 Maruyama Kougyo Kabushikikaisha Reformation of soft soil and system therefor
CN100549304C (zh) * 2007-08-01 2009-10-14 汤连生 一种无密封快速真空预压法
CN102787613A (zh) * 2012-08-30 2012-11-21 中国水利水电第十四工程局有限公司 一种地下洞室排水盲沟装置及施工方法
CN103321276A (zh) * 2012-03-22 2013-09-25 甘肃第一建设集团有限责任公司 节能供水无负压管路
NL2010349C2 (en) * 2013-02-22 2014-08-25 Oord Dredging And Marine Contractors B V Van Method for consolidating water-containing ground, and drain element for use in such method.
DE102014214718A1 (de) 2013-07-26 2015-01-29 Soletanche Freyssinet System und Verfahren zum Trockenlegen feuchter Böden
CN113186961A (zh) * 2021-04-29 2021-07-30 中国一冶集团有限公司 一种减小对周边建筑物影响的基坑降排水方法
US11085161B2 (en) * 2019-11-25 2021-08-10 Zhejiang University Device and method for treating soft soil foundations
CN113931656A (zh) * 2021-09-16 2022-01-14 中国科学院武汉岩土力学研究所 一种隧道衬砌渗漏水病害真空注浆治理方法及系统
CN115434301A (zh) * 2022-08-03 2022-12-06 上海渊丰地下工程技术有限公司 一种真空预压排水系统及地基处理方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949153B (zh) * 2010-09-14 2012-07-04 刘远锋 地基排水控制法
CN103711117A (zh) * 2014-01-17 2014-04-09 邓立新 真空预压自动化智能监测系统
CN104652409B (zh) * 2014-12-24 2016-08-24 中交天津港湾工程研究院有限公司 一种连续强排水联合夯密软基处理技术方法
CN105804044B (zh) * 2016-03-21 2017-12-19 温州大学 辐射式正负压联合真空预压地基处理系统以及进行真空预压地基处理的方法
CN106869107A (zh) * 2017-02-28 2017-06-20 河北工业大学 一种加固软土地基的新型立体排水系统及其降水施工方法
CN110593288A (zh) * 2019-09-06 2019-12-20 河北中基华工程项目管理有限公司 一种用于深基坑的井点降水与排水装置
CN113175004B (zh) * 2021-04-25 2022-06-07 中国长江三峡集团有限公司 海上风电单桩基础防冲刷装置及方法
CN114606927B (zh) * 2022-01-24 2024-05-03 中交第二航务工程局有限公司 真空降水联合气压劈裂进行地基处理的施工方法
CN117090219B (zh) * 2023-09-01 2024-07-30 山东正元建设工程有限责任公司 钢筋混凝土基坑支护支撑系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2202223A (en) * 1938-10-08 1940-05-28 Thomas F Moore Water mop
FR995251A (fr) * 1949-09-13 1951-11-29 Procédé pour la compression et/ou la stabilisation de terrains
FR1475244A (fr) * 1966-04-07 1967-03-31 Procédé pour drainer verticalement le sol et installation pour la mise en oeuvre de ce procédé
FR2564500A1 (fr) * 1984-05-21 1985-11-22 Intrafor Cofor Procede de consolidation d'un sol mou a faible permeabilite et dispositif pour sa mise en oeuvre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2202223A (en) * 1938-10-08 1940-05-28 Thomas F Moore Water mop
FR995251A (fr) * 1949-09-13 1951-11-29 Procédé pour la compression et/ou la stabilisation de terrains
FR1475244A (fr) * 1966-04-07 1967-03-31 Procédé pour drainer verticalement le sol et installation pour la mise en oeuvre de ce procédé
FR2564500A1 (fr) * 1984-05-21 1985-11-22 Intrafor Cofor Procede de consolidation d'un sol mou a faible permeabilite et dispositif pour sa mise en oeuvre

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663373A1 (fr) * 1990-06-18 1991-12-20 Cognon Jean Marie Procede et dispositif pour etablir une depression dans une zone de terrain permeable isolee de l'atmosphere par une membrane etanche.
EP0505011A1 (de) * 1991-03-22 1992-09-23 Oosterhof Holman Milieutechniek B.V. Verfahren und Vorrichtung zur Reinigung eines kontaminierten Grundstückbereiches
BE1004706A4 (nl) * 1991-03-22 1993-01-12 Oosterhof Holman Milieutechnie Werkwijze en inrichting voor het reinigen van een verontreinigd bodemgebied.
EP0608928A1 (de) * 1993-01-25 1994-08-03 Funderingstechnieken Verstraeten B.V. Verfahren zur beschleunigten Bodenkonsolidierung
BE1006637A3 (nl) * 1993-01-25 1994-11-03 Verstraeten Funderingstech Bv Werkwijze voor het versneld konsolideren van een terrein.
WO1998023819A1 (fr) * 1996-11-25 1998-06-04 Robinet Jean Claude Dispositif de consolidation hydrique des sols
BE1011446A3 (nl) * 1997-06-10 1999-09-07 Applic Of Cleaning Tech On Soi Inrichting voor het onttrekken van vloeistof, o.m. voor het verlagen van het grondwaterniveau of voor drijflaagverwijdering.
EP0884418A3 (de) * 1997-06-10 1999-01-20 APPLICATION OF CLEANING TECHNIQUES ON SOILS, in het kort SOILS Vorrichtung zur Absenkung des Grundwasserspiegels oder zur Entfernung von Schwimmschichten
EP0884418A2 (de) * 1997-06-10 1998-12-16 APPLICATION OF CLEANING TECHNIQUES ON SOILS, in het kort SOILS Vorrichtung zur Absenkung des Grundwasserspiegels oder zur Entfernung von Schwimmschichten
NL1008617C2 (nl) * 1998-03-17 1999-09-20 Hollandsche Betongroep Nv Werkwijze voor het consolideren van een waterhoudende grondlaag, zoals een klei- of veenhoudende laag.
WO1999047756A1 (en) * 1998-03-17 1999-09-23 Hollandsche Beton Groep N.V. Consolidation method for soil layers with low permeability
WO1999063164A1 (en) * 1998-06-02 1999-12-09 Isis Innovation Limited A method and apparatus for consolidation of sedimentary beds
WO2000050696A1 (en) * 1999-02-25 2000-08-31 Menard Soltraitement An equipment and a method for partially drying a zone of ground containing a liquid
US6254308B1 (en) 1999-02-25 2001-07-03 Menard Soltraitement Equipment and a method for partially drying a zone of ground containing a liquid
KR100463314B1 (ko) * 2002-07-12 2004-12-29 김윤상 물을 재하 하중으로 이용한 대규모 부지의 연약지반개량공법
US7198430B2 (en) * 2002-10-31 2007-04-03 Maruyama Kougyo Kabushikikaisha Reformation of soft soil and system therefor
NL1023555C2 (nl) * 2003-05-28 2004-12-03 Bos & Kalis Baggermaatsch Werkwijze en samenstel voor het onttrekken of toevoeren van stoffen uit/aan een bodemlichaam.
WO2004106639A1 (en) * 2003-05-28 2004-12-09 Baggermaatschappij Boskalis B.V. Method and assembly for withdrawing or supplying substances from/to a soil body
CN100549304C (zh) * 2007-08-01 2009-10-14 汤连生 一种无密封快速真空预压法
CN103321276A (zh) * 2012-03-22 2013-09-25 甘肃第一建设集团有限责任公司 节能供水无负压管路
CN102787613A (zh) * 2012-08-30 2012-11-21 中国水利水电第十四工程局有限公司 一种地下洞室排水盲沟装置及施工方法
NL2010349C2 (en) * 2013-02-22 2014-08-25 Oord Dredging And Marine Contractors B V Van Method for consolidating water-containing ground, and drain element for use in such method.
WO2014129899A1 (en) * 2013-02-22 2014-08-28 Van Oord Dredging And Marine Contractors B.V. Method for consolidating water-containing ground, and drain element for use in such method
DE102014214718A1 (de) 2013-07-26 2015-01-29 Soletanche Freyssinet System und Verfahren zum Trockenlegen feuchter Böden
FR3009005A1 (fr) * 2013-07-26 2015-01-30 Soletanche Freyssinet Systeme et procede pour assecher des sols humides.
DE102014214718B4 (de) 2013-07-26 2022-02-17 Soletanche Freyssinet System und Verfahren zum Trockenlegen feuchter Böden
US11085161B2 (en) * 2019-11-25 2021-08-10 Zhejiang University Device and method for treating soft soil foundations
CN113186961A (zh) * 2021-04-29 2021-07-30 中国一冶集团有限公司 一种减小对周边建筑物影响的基坑降排水方法
CN113931656A (zh) * 2021-09-16 2022-01-14 中国科学院武汉岩土力学研究所 一种隧道衬砌渗漏水病害真空注浆治理方法及系统
CN113931656B (zh) * 2021-09-16 2022-12-09 中国科学院武汉岩土力学研究所 一种隧道衬砌渗漏水病害真空注浆治理方法及系统
CN115434301A (zh) * 2022-08-03 2022-12-06 上海渊丰地下工程技术有限公司 一种真空预压排水系统及地基处理方法

Also Published As

Publication number Publication date
FR2627202B1 (fr) 1992-04-17
FR2627202A1 (fr) 1989-08-18
EP0329500B1 (de) 1992-04-22
DE68901277D1 (de) 1992-05-27
ATE75273T1 (de) 1992-05-15

Similar Documents

Publication Publication Date Title
EP0329500B1 (de) Verfahren und Einrichtung zur Bodenkonsolidierung
FR2564873A1 (fr) Procede et dispositif d'etanchement pour la protection contre l'eau d'infiltration de decharges
FR2609295A1 (fr) Procede de construction d'installations de drainage ou analogues ainsi que dispositif de support et bloc-tampon pour sa mise en oeuvre
EP0046418A1 (de) Verfahren zum Verankern und Gründungsanlage für eine, insbesondere bewegliche, Plattform
FR2703603A1 (fr) Décharge de déchets.
EP0607349B1 (de) Wasserbehälteranordnung
WO2010001031A2 (fr) Chasse pour bachee a ouverture automatique et rapide
FR3009005A1 (fr) Systeme et procede pour assecher des sols humides.
FR2740493A1 (fr) Structure de bassin ou de piscine sans paroi verticale
FR2999963A1 (fr) Procede et installation pour le drainage passif de lixiviats dans un casier a dechets
FR2564500A1 (fr) Procede de consolidation d'un sol mou a faible permeabilite et dispositif pour sa mise en oeuvre
EP1182355B1 (de) Einrichtung zur Tiefbodendrainage
EP0608928A1 (de) Verfahren zur beschleunigten Bodenkonsolidierung
FR2663373A1 (fr) Procede et dispositif pour etablir une depression dans une zone de terrain permeable isolee de l'atmosphere par une membrane etanche.
FR3007433A1 (fr) Systeme de prevention des fuites pour un bassin de retention et procede y relatif.
FR2483980A1 (fr) Procede pour la construction d'une maison et maison s'y rapportant
EP0400636A1 (de) Einrichtung zur Ausrüstung des Auslassendes eines Dränsyphonrohres
FR2471740A1 (fr) Application nouvelle des geotextiles a l'irrigation souterraine des terrains desertiques
FR2921458A1 (fr) Dispositif de raccordement et/ou support de canalisations lisses ou annulees avec reglage de hauteur pour drainage, epandage evacuation ou une maitrise de la pente est necessaire
FR2694314A1 (fr) Procédé de traitement des sols pollués et dispositif pour sa mise en Óoeuvre.
EP0019676A1 (de) Verfahren und Vorrichtung zur beschleunigten Verdichtung feinkörniger Böden durch Belastung einer Membrane
FR2860530A1 (fr) Perfectionnement aux installations assurant l'abaissement par drainage d'une nappe aquifere dans un substrat poreux pour permettre la depose d'une matiere solide sedimentaire
WO2022058663A1 (fr) Pot pour plante
FR2722819A1 (fr) Poche et procede de calage ou de mise en pression de deux elements de construction
FR2668593A1 (fr) Appareil doseur de liquide a deux siphons.

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): AT BE CH DE ES GB LI NL

17P Request for examination filed

Effective date: 19891010

17Q First examination report despatched

Effective date: 19901210

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB LI NL

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

Ref country code: AT

Effective date: 19920422

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19920422

Ref country code: NL

Effective date: 19920422

REF Corresponds to:

Ref document number: 75273

Country of ref document: AT

Date of ref document: 19920515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 68901277

Country of ref document: DE

Date of ref document: 19920527

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19930131

Ref country code: LI

Effective date: 19930131

Ref country code: BE

Effective date: 19930131

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
BERE Be: lapsed

Owner name: S.A. MENARD-SOLTRAITEMENT

Effective date: 19930131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20071227

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20080115

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20090125

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 EXPIRATION OF PROTECTION

Effective date: 20090125