EP0189158A2 - Procédé et dispositif pour étancher des dépôts d'immondices et surfaces contaminées - Google Patents

Procédé et dispositif pour étancher des dépôts d'immondices et surfaces contaminées Download PDF

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Publication number
EP0189158A2
EP0189158A2 EP86100669A EP86100669A EP0189158A2 EP 0189158 A2 EP0189158 A2 EP 0189158A2 EP 86100669 A EP86100669 A EP 86100669A EP 86100669 A EP86100669 A EP 86100669A EP 0189158 A2 EP0189158 A2 EP 0189158A2
Authority
EP
European Patent Office
Prior art keywords
sword
drawn
sealing
tubes
film
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
EP86100669A
Other languages
German (de)
English (en)
Other versions
EP0189158B1 (fr
EP0189158A3 (en
Inventor
Kunz Gmbh Co Alfred
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.)
Alfred Kunz and Co
Alfred Kunz GmbH and Co
Original Assignee
Alfred Kunz and Co
Alfred Kunz GmbH and Co
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 Alfred Kunz and Co, Alfred Kunz GmbH and Co filed Critical Alfred Kunz and Co
Priority to AT86100669T priority Critical patent/ATE52117T1/de
Publication of EP0189158A2 publication Critical patent/EP0189158A2/fr
Publication of EP0189158A3 publication Critical patent/EP0189158A3/de
Application granted granted Critical
Publication of EP0189158B1 publication Critical patent/EP0189158B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/006—Sealing of existing landfills, e.g. using mining techniques

Definitions

  • the invention relates to a method for sealing existing landfills or contaminated areas.
  • landfills were often built with inadequate waterproofing towards the groundwater or no waterproofing at all, so that pollutants can seep into the ground with the surface water and get into the groundwater. It is therefore an urgent task today to seal existing landfill sites that have become leaky or that have no sealing at all to protect the groundwater.
  • sealing layers are not available or accessible, it would be possible to mine the floor under the landfill in a mining manner by tunneling or the like. to infiltrate and to pull in from the tunnels a sealing sole plate, which is sealed against the sealing walls surrounding the landfill. Such a method would be extremely complex and expensive.
  • the object of the invention is therefore to propose methods for sealing existing landfills, which can be carried out with less effort and therefore in a more economical manner at lower costs.
  • this object is achieved in that on opposite sides of the landfill or the contaminated area, excavation pits or trenches with sheeting are excavated in such a way that from an excavation pit or a trench to the or through the floor under the landfill or the contaminated area in approximately horizontal plane one after the other on approximately parallel and adjacent paths a sword, a sheet or housing provided with a cutting edge or the like. can be brought forward or pushed forward, to which a drawn sealing film is attached or which are provided on the back with nozzles for injecting hardening material forming a sealing layer, and that the last film sheet drawn in with its edge area with the edge area of the previously drawn film sheet is sealingly connected.
  • construction pits or trenches are first excavated on opposite sides of the landfill with a suitable sheeting.
  • the excavation pits can be provided with appropriate slopes. If necessary, the excavation pits or exit trenches can be secured with a suitable shoring.
  • the film or the injected sealing layer is then connected tightly to the sealing walls enclosing the landfill, so that these form a tub enclosing the landfill or contaminated area with the sealing walls.
  • the sealing walls serving for the border are provided with corresponding cutouts.
  • sealing walls are dispensed with, the sealing foils are pulled up over the outer slopes of the construction pits or trenches to the surface of the earth and secured there.
  • the sealed construction pits or trenches that are still present after the sealing work has been completed can then be filled with waste, which makes the process even more profitable.
  • the embankments of the construction pits or trenches can be made steeper, and then normal fastening means can be used to attach the embankments.
  • sword or the like is preferred by pipes that previously or the like by so-called ground rockets. be drafted.
  • the swords or lances which are preferably provided with cutting edges at their front ends, are made of steel and are connected to the rear ends of the tubes, which pass through in the opposite direction lying pit or the like. arranged hydraulic preferred presses, which act on the pipes pulled in advance, are preferred.
  • serving pipes can or the like in the usual driving method with so-called ground rockets. be introduced. These are controllable vibrators displacing the ground, which can be controlled by the pipes pushed in. To insert the pipes, any existing sealing walls serving for the enclosure are provided with appropriate recesses, if necessary.
  • the drawn-in tubes can be used as tie rods which engage the sword on both sides.
  • units generating vibrations or shocks can be connected to the cutting edges, hydraulic units being provided for these units, which are fed with the hydraulic medium by retightened hoses or through the pipes.
  • Lubricants can be sprayed onto the cutting edges and / or onto the foils. These lubricants can consist of concrete, for example. The lubricant can be pressed in continuously with the pulling process.
  • the drawn tubes have a stiffening vertical web and are provided in their shells with longitudinal lateral slots or are provided that in the slots are inserted with the ends of the cutting guide shoes and these are pulled forward through the corresponding pipe halves of the ropes or rods.
  • the tubes only serve to guide the guide shoes for the cutting edge and to accommodate and protect the traction elements.
  • the swords with the cutting edges are pulled forward between two pipes, so that the landfill is infiltrated as it were. If trailing sealing foil webs are attached to the cutting edges, the tubes can then be filled with a sealing mass so that the longitudinal edges of the successively drawn webs are sealed against one another.
  • the tubes have a walkable cross section.
  • the diameter of the pipes can be, for example, 1.6 m.
  • the slotted upper and lower pipe shells are also supported by a central web. These pipes of larger diameter are provided with lateral slots before they are drawn in or subsequently, which then serve to guide the side parts of the swords during the drawing.
  • the fact that the pipes are accessible means that the preference can be observed. Any faults can be remedied on site. After pulling through the foils, these pipes are pressed with concrete or another sealing material.
  • the foils can be provided in rolls in the construction pit forming the exit and can be drawn in in strips one after the other, the individual webs in the exit construction pit being connected to one another. Tubes can be drawn between the longitudinal edges of the film, which are drawn in strips, through which, after being drawn in, sealing compounds connecting the edges of the film are injected.
  • the side edges of the sheets may also be provided with interlocking closed-like guides, which are formed such that, in this sealing after retraction masses a g e-presses can be.
  • the cutting edges are provided on their rear side with injection nozzles from which a material is injected into the ground which hardens to form a sealing layer.
  • This material expediently consists of a two-component plastic which cures only after the components have been mixed behind the injection nozzles.
  • This layer can have a rubber-elastic character.
  • the sword can be pulled forward not only by two tubes connected to it at the end, but also by rods, ropes or chains.
  • ropes, chains or rods are laid in the previously drawn or pressed in pipes, which serve to advance the sword.
  • the sword can also be pushed forward in the tubes serving as guides by means of pressure rods or tubes.
  • the sword slits open the pipes, which are preferably made of plastic, so that the drawn or dragged film lies with its edges inside the pipes.
  • the pipes are filled with a sealing compound so that the edges of the drawn-in foils are sealed off from one another.
  • the tubes themselves are expediently provided with lateral thin spots, which are broken open or torn open when the sword is pulled forward from its edge regions.
  • the length of the individual pipe sections corresponding to the construction pits width is chosen. If the pipes are pulled in without so-called ground rockets, they are made of steel and are pushed forward by impact or vibration devices.
  • the pre-pressed pipes can displace the ground or an open pipe cross-section can also be pre-pressed so that the soil enters the front pipe section in the form of a lying column. The column from the soil, as it were cut out, is then pressed out or flushed out of the drawn-in pipe as soon as it has reached the next construction pit.
  • the soil lying in the feed direction of the pipes can also be removed by flushing.
  • two tubes are drawn in at the same time, which are connected by a foil which is carried along and bridges the gap between them.
  • this method does not therefore require that guide tubes have been inserted beforehand.
  • the tube which is drawn in at a small distance next to an already drawn-in tube and has a lateral web-like extension, projects through a lateral slot in the already drawn-in tube, so that a sealing connection is established between these two tubes.
  • Tubes with a greater distance and a smaller distance are therefore preferred parallel to one another, the smaller distance being bridged by web-like projections which protrude into the jacket of the already drawn-in tube through slots.
  • the web-like extension can have a T-web-like cross piece, which is preferably curved in accordance with the wall of the tube into which it is drawn.
  • the T-bar-like lock part is expediently pulled forward or through in the tube by a ground rocket-like propulsion device or by traction means Rods or tubes are pre-pressed so that running or jamming is avoided.
  • the distance of the pipes bridged by the drawn-in foils can be about 1 to 5 meters, depending on the nature of the floor.
  • the ground rockets are provided with pressurized water nozzles on their front end.
  • the pressurized water nozzles can consist of ring nozzles or also of individual nozzles, which are arranged in a specific pattern.
  • Pressurized water is preferably expelled from the nozzles at a pressure of preferably at least 200 bar, which creates a pressure cushion that bursts open the soil formation and creates cavities. Smaller soil components are flushed outwards and overall the propulsion of the rocket is facilitated because it can push into a floating cushion. This facilitates the propulsion of the rocket and improves its accuracy.
  • the rocket provided with pressurized water nozzles can be propelled over greater lengths than would be possible without the pressurized water nozzles.
  • Lubricants can be added to the pressurized water jet.
  • These lubricating substances can consist, for example, of concrete or polyglycols. It can also be expedient to add water-relaxing substances to the pressurized water.
  • the sword dragging the foil is provided on its front side with a plurality of nozzles, from which high-pressure water jets emerge when advancing or advancing, so that the ground is torn open and obstacles are divided and the sword becomes lighter lets pull through.
  • high-pressure jet nozzles on the front of the pipes.
  • These high-pressure nozzles can be distributed in a ring in the area of the ring cutter. The high pressure jet or jets loosen the ground during the advance so that the material can be displaced more easily or can enter the pipe more easily. If the material enters the pipe, only an amount of soil corresponding to the volume of the pipe wall needs to be displaced.
  • ground rockets are used, which are connected to each other by the sword. Both the ground rockets and the sword are expediently provided with high-pressure water nozzles on their ends.
  • the supply lines are fed through the drawn pipes.
  • the tube lying next to an already drawn-in tube has a projecting web with a lock-like sealing sleeve, which establishes the connection to the adjacent, previously drawn-in tube and is driven in such a way that it passes through its jacket in a slot.
  • the two pipes connected by a film can not only be pulled in by rockets, but also by pre-pressed pipes.
  • pipes are drawn in by horizontal drilling, which are then directly or indirectly the preferential of the sword or the like. serve.
  • a tube can first be drawn in by drilling or pre-drilling, with the pulling in of the next tube also being pulled by drilling or pre-drilling at the same time as the sword to which the drawn film is attached, which is connected to the next tube and with a profiled edge area through a slot into the interior of the previously drawn pipe.
  • the sword can be pulled forward in the previously drawn-in tube by means of ropes or rods or pushed forward by rods.
  • the tubes can be made of steel, but expediently made of plastic. If the pipes are made of plastic, it may be appropriate for the front pipe section following the drill head to be made of steel.
  • the following tube which is connected to the sword, is pulled forward with the drilling, the other side of the sword being drawn into the last tube drawn in. Tilting the sword is avoided by pulling the other side of the sword in the last tube drawn in.
  • the profiled edge of the film which is drawn forward in the tube last drawn in can have a T-shaped profile.
  • the film drawn in with the last tube and the sword connected to it can be connected to the tube or can also reach through a slot with a profiled edge in the interior thereof.
  • the variant according to the invention described last enables drilling of the pipes to be drawn in particularly precisely. It is particularly advantageous that the pipes can be drawn in simultaneously with the drilling, the drill pipe being able to be pulled out of the pipe after reaching the next construction pit. The drill head can be removed before pulling out. The method can also be carried out particularly economically because when the last tube is pulled in, the sword and the film attached to it are pulled out, which is already connected to the last tube drawn.
  • the method according to the invention can also be carried out in groundwater.
  • the sword and the film are thus simultaneously drawn forward with the last tube in each case, the preceding tube being used for guidance and for the preference of the other sword side.
  • a guide body can be arranged in the preceding tube, on which the rods or ropes engage and on which the heavy side protruding into the tube is attached.
  • the pipes previously drawn in with the drilling are pulled and with the pulling rods, ropes or chains are drawn, or the like for the preference of the sword. with this get connected.
  • winches located in the target pits or tunnels are used to pull the chains or ropes forward.
  • the sword can also be advanced by means of tie rods or ropes connected laterally to it, which run in the tubes, the previously inserted guide tubes being pulled beforehand.
  • ground rockets are also not expedient in particular if the ground to be penetrated has different hardnesses because the ground rockets endeavor to slide on the harder layers and to escape into softer layers. The ground rockets therefore often have the tendency to deviate diagonally upwards.
  • a displacement of the soil and its compaction by the sword to be pulled through can cause insurmountable difficulties, especially in dense soils, especially on the dragged foil large friction forces occur with the ground.
  • the floor in front of the sword in the preferred direction is loosened and broken up by water injected at high pressure and the loosened material is then rinsed out with water or compressed air.
  • a lubricant can be injected to reduce the friction of the dragged film with the ground.
  • a device for carrying out the method according to the invention is characterized in that the sword consists of at least one lateral and parallel guide tube connecting plate, which is provided on one side with at least one high pressure injection nozzle, which is approximately at right angles or acute angles in or against the preferred direction to the adjacent guide tube and which is directed to the opposite guide tube.
  • a flushing water line directed towards the opposite guide tube can open in the middle area of the sword, the opposite guide tube in front of the sword being provided on its inner side with an elongated inlet opening for flushing water and items, and with the guide tubes closed at the front on trailing, laterally with the dragged foil connected pipes are connected, one of which runs the high pressure water and rinsing lines and the other of which is used for rinsing water and items to be washed. Compressed air can also be used instead of flushing water.
  • the sword and the high pressure and flushing media nozzles on both sides of an inlet chamber are enclosed between delimiting plates which are connected to the lateral guide tubes and are at a distance from one another which is smaller than the width of the inlet opening in the opposite guide tube.
  • the plates forming an inlet chamber prevent the soil above and below the solid sword from being soaked by the injection and rinse water.
  • the cutting edges of the plates are expediently curved in an arc or in a wedge shape, so that they form, as it were, deflection edges for larger pieces of rock which could block the inlet opening of the discharge line.
  • high-pressure injection nozzles can be arranged one above the other. These can also point in different directions.
  • nozzles for supplying a lubricant are expediently arranged on the trailing foil.
  • the nozzles can open into window-like sections of the sword.
  • a water-concrete mix can also be added to the high-pressure injection nozzles to cut and break up the soil in order to reduce the coefficient of friction of the soil with the trailing foil.
  • the side guide tubes form the guide elements for the sword. They can be pulled directly through the previously inserted pipes or connected in an articulated manner with tie rods via which they are pulled forward.
  • milling disks or cutting chains are arranged in front of the sword constantly or as needed serve the mechanical crushing of the soil and the removal of larger pieces of rock.
  • a rod, a rope or a chain is expediently drawn into the protective tube which remains after the drilling and in which the hole has been drilled.
  • the protective tube is then pulled so that the borehole collapses in a loose bed.
  • the sword is drawn in, there is no need to return the rinsed goods and water. It is sprayed from the opposite side into the loosened borehole, which has a loose bed by pulling the protective tube, by the high-pressure jet, with a rearrangement of the material and a flushing of the cutting edge of the sword, so that the foil dragged by it is good lets move in.
  • a zone is created through the drilling area loosened by the drawn protective tube, into which the displaced material can be flushed, so that the sword can be pulled through with reduced friction.
  • the supply lines to the sword need not be arranged in a dragged pipe. They can also be arranged in the rods serving as tension elements or in hollow ropes, which are thus formed by hoses.
  • the winding of the ropes or chains is done by winches on which they are wound in such a way that an oblique bore is compensated for by pulling the ropes or chains into their correct position with the sword pulled forward.
  • the like of the sword dragged foils at their edges with interlocking lock-like guides.
  • These are expediently so flat formed that the films with their edges consisting of lock-like guides can be wound up into rolls which can be introduced into the construction pits or tunnels.
  • the individual films with interlocking lock elements are preferred in such films and one side of the sword, preferably the side of the sword with the high-pressure nozzles, must be pulled forward in the outer edge of the last film drawn in, a further tension element must be present after the film has been drawn in stay. Either a pulling element is provided running in the lock or a pulling element is drawn into the bore next to the lock, which is then used to advance the foil side of the sword.
  • the foils are expediently wound into rolls in multiple layers.
  • the foils can be provided with a mesh or lattice-like reinforcement made of steel cables or high-strength plastic filaments. Furthermore, the foils can be sandwiched on both sides by steel plates connected to the back of the sword for their protection.
  • Multi-layer films can be wrapped better despite their greater strength. When they are pulled in, the multilayer films can be welded to the edges on site, so that appropriate seals are formed.
  • the space between the foils and the weld seams can also be filled with a control liquid that can be used as a leakage indicator.
  • the sword consists of box-shaped upper and lower sheets 3, 4 connected to each other and the lateral guide tubes 1, 2.
  • the sheets 3, 4 are welded on their sides to the guide tubes 1, 2.
  • the front and rear sides of the sheets 3, 4 are closed in the manner shown in FIG. 3.
  • the front edge 5 of the sheets 3, 4 is convexly curved and provided with a step 6 in which the flushing water nozzle 7 is arranged, which is connected to the flushing water line 8.
  • the high-pressure injection nozzle 9 Located adjacent to the left-hand guide tube 1 is the high-pressure injection nozzle 9, which is oriented at an acute angle to the leading part of the guide tube 1 and is directed toward the opposite guide tube 2.
  • the line 11 connected to the outlet nozzles 10 is arranged, which serves to supply a lubricant, preferably concrete.
  • a web-like tension plate 12 is connected to the box-shaped part of the sword formed by the plates 3, 4 and is provided with windows 13 into which the concrete nozzles 10 open in the manner shown in FIGS. 1, 3.
  • the dragged sealing film is connected to the web-like sheet 12 via clamping tabs 16 in the manner shown in FIGS. 1 and 3.
  • the film 17 is connected to side plastic tubes 18, 19 which are connected to the side guide tubes 1, 2 of the sword.
  • the left tube 19 takes the lines 8, 11, 20 for supplying the concrete, the rinse water and the high pressure water.
  • the right guide tube 2 is provided with an elongated inlet opening 24 for removing the rinsing water and the rinsed-out items.
  • the front ends of the guide tubes 1, 2 are provided with sleeves 25, 26 for connecting tension elements.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
EP86100669A 1985-01-21 1986-01-20 Procédé et dispositif pour étancher des dépôts d'immondices et surfaces contaminées Expired - Lifetime EP0189158B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100669T ATE52117T1 (de) 1985-01-21 1986-01-20 Verfahren und vorrichtung zur abdichtung bestehender muelldeponien oder kontaminierter flaechen.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE3501799 1985-01-21
DE3501799 1985-01-21
DE3525392 1985-07-16
DE3525392 1985-07-16
DE3525681 1985-07-18
DE3525681 1985-07-18
DE3532100 1985-09-09
DE3532100 1985-09-09

Publications (3)

Publication Number Publication Date
EP0189158A2 true EP0189158A2 (fr) 1986-07-30
EP0189158A3 EP0189158A3 (en) 1987-12-09
EP0189158B1 EP0189158B1 (fr) 1990-04-18

Family

ID=27433279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100669A Expired - Lifetime EP0189158B1 (fr) 1985-01-21 1986-01-20 Procédé et dispositif pour étancher des dépôts d'immondices et surfaces contaminées

Country Status (2)

Country Link
EP (1) EP0189158B1 (fr)
DE (1) DE3670519D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841403A1 (de) * 1988-01-18 1989-07-27 Kunz Alfred & Co Verfahren zum abdichten von grundflaechen, vorzugsweise von bestehenden muelldeponien oder kontaminierten flaechen
EP0360145A3 (fr) * 1988-09-21 1991-02-27 Alfred Kunz GmbH & Co. Procédé pour rendre étanches des dépôts d'ordures existants ou des surfaces contaminées
US5542782A (en) * 1991-06-24 1996-08-06 Halliburton Nus Environmental Corp. Method and apparatus for in situ installation of underground containment barriers under contaminated lands
US5765965A (en) * 1991-06-24 1998-06-16 Halliburton Nus Corporation Apparatus for in situ installation of underground containment barriers under contaminated lands
US5957624A (en) * 1991-06-24 1999-09-28 Lockheed Martin Idaho Technologies Company Apparatus and method for in Situ installation of underground containment barriers under contaminated lands
US9381552B1 (en) * 2013-03-15 2016-07-05 Perma-Fix Environmental Services, Inc. Method and apparatus for recovering subsurface free mercury and decontaminating a substrate
WO2018164593A1 (fr) * 2017-03-07 2018-09-13 Maciej Bargiel Tnk Projekt Dispositif pour la formation sans tranchée de cloisons en béton dans le sol, en particulier des réservoirs à accumulation de chaleur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051950A (fr) * 1900-01-01
FR2316383A1 (fr) * 1975-07-03 1977-01-28 Soletanche Procede et dispositif pour la realisation d'ecrans d'etancheite dans le sol par lancage
NL191153C (nl) * 1981-09-15 1995-02-16 Stevin Volker Beton Water Werkwijze voor het vervaardigen van een de stroming van grondwater beperkend scherm in de grond alsmede vel en lans voor toepassing bij deze werkwijze.
NL8200466A (nl) * 1982-02-08 1983-09-01 Stevin Volker Beton Water Werkwijze voor het vervaardigen van een de stroming van grondwater afsluitend scherm.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841403A1 (de) * 1988-01-18 1989-07-27 Kunz Alfred & Co Verfahren zum abdichten von grundflaechen, vorzugsweise von bestehenden muelldeponien oder kontaminierten flaechen
EP0360145A3 (fr) * 1988-09-21 1991-02-27 Alfred Kunz GmbH & Co. Procédé pour rendre étanches des dépôts d'ordures existants ou des surfaces contaminées
US5542782A (en) * 1991-06-24 1996-08-06 Halliburton Nus Environmental Corp. Method and apparatus for in situ installation of underground containment barriers under contaminated lands
US5765965A (en) * 1991-06-24 1998-06-16 Halliburton Nus Corporation Apparatus for in situ installation of underground containment barriers under contaminated lands
US5957624A (en) * 1991-06-24 1999-09-28 Lockheed Martin Idaho Technologies Company Apparatus and method for in Situ installation of underground containment barriers under contaminated lands
US9381552B1 (en) * 2013-03-15 2016-07-05 Perma-Fix Environmental Services, Inc. Method and apparatus for recovering subsurface free mercury and decontaminating a substrate
WO2018164593A1 (fr) * 2017-03-07 2018-09-13 Maciej Bargiel Tnk Projekt Dispositif pour la formation sans tranchée de cloisons en béton dans le sol, en particulier des réservoirs à accumulation de chaleur

Also Published As

Publication number Publication date
DE3670519D1 (de) 1990-05-23
EP0189158B1 (fr) 1990-04-18
EP0189158A3 (en) 1987-12-09

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