EP0690942B1 - Procede permettant de rendre des massifs de terre etanches et dispositif de mise en oeuvre dudit procede - Google Patents
Procede permettant de rendre des massifs de terre etanches et dispositif de mise en oeuvre dudit procede Download PDFInfo
- Publication number
- EP0690942B1 EP0690942B1 EP94915557A EP94915557A EP0690942B1 EP 0690942 B1 EP0690942 B1 EP 0690942B1 EP 94915557 A EP94915557 A EP 94915557A EP 94915557 A EP94915557 A EP 94915557A EP 0690942 B1 EP0690942 B1 EP 0690942B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealant
- ground
- bore
- injected
- bores
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000007789 sealing Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title abstract description 10
- 239000000565 sealant Substances 0.000 claims abstract description 46
- 239000002689 soil Substances 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract 2
- 238000002347 injection Methods 0.000 claims description 61
- 239000007924 injection Substances 0.000 claims description 61
- 230000004888 barrier function Effects 0.000 claims description 29
- 238000005553 drilling Methods 0.000 claims description 15
- 238000011109 contamination Methods 0.000 claims description 14
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000012170 montan wax Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000004568 cement Substances 0.000 claims 1
- 238000011156 evaluation Methods 0.000 claims 1
- 235000019353 potassium silicate Nutrition 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
-
- 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
-
- 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 technical problem on which the invention is based is to create a simple method for the complete sealing of soil bodies, in particular contamination stoves, such as landfills, pipelines or construction pits to be created, in which no mined tunnels, flat excavation spaces or shafts are necessary.
- gaseous, liquid and / or finely solid sealant is continuously injected into the surrounding bottom area of the bore during a longitudinal movement of the drill head in the bore. All forms of the introduction of sealant are mentioned in the following injection.
- the injection paths which are produced by at least two injection outlets and are located next to one another or one above the other in the case of a non-rotating drill pipe, each enclose an angle of approximately 90 ° to 180 °.
- leachate can run to the lowest points in the channels formed thereby and be gripped and lifted by micro-tunnels with filter tube installation that are produced on the inside using the same drilling technique.
- barrier layers it is also possible to create several such barrier layers to the side and below the contamination source in order to achieve an absolutely secure seal of the contamination source.
- a further number of bores are advantageously made at defined distances from one another at a vertical angle, for example, to the first number of bores, Drive under the contamination source, drive it forward and in turn inject these sealants into the adjacent floor areas.
- two or more completely closed barrier layers are formed which encompass the source of contamination and ensure absolutely secure closure.
- the barrier layer formed by the montan wax emulsion is resistant to liquid and gaseous ones Barrier attacking substances in seepage, capillary and groundwater.
- the sealants can also be injected below the fracture pressure, depending on the permeability structure of the area surrounding the bore.
- the low-pressure injections make it possible to optimally adapt the barrier layers to be created to the soil conditions.
- a landfill body 1 is irregularly shaped in the underground part.
- a number of boreholes 2 are driven outside the landfill body from the surface with the known course-controlled drilling method, contour-adjusted under the contaminant body, to the opposite side of the landfill body 1.
- a second barrier layer 4 is formed under the first barrier layer 3 by a network of bores 5, which are rotated by 90 ° here and spaced from each other, and bottom regions 4 injected therefrom.
- Fig. 2 the fully controllable, remotely steerable drill head 6 is shown as it passes under the landfill body 1.
- barrier layers 3 can also be introduced into partial areas of the bottom layer.
- a first row of bores 2a are made one above the other at equal distances from one another in the ground.
- a second row of bores 2b which also lie one above the other and run at equal distances from one another, is arranged offset from the first row of bores 2a.
- Two slightly widened injection areas extend from each bore 2a, 2b, the injection areas emanating from a bore enclosing an angle of approximately 130 °. The neighboring injection areas overlap.
- the injection areas starting from the first row of bores 2a and from the second row of bores 2b each intersect in such a way that completely enclosed areas are formed, in which e.g. further fully course-controlled bores 10 are introduced, which serve as monitoring bores.
- This arrangement of the bores 2a, 2b creates a kind of double wall seal.
- bores 2a, 2b, 2c are made between these bores 2a, 2b between the first row of bores 2a and the second row of bores 2b, of which bores 2c each extend four individual injection areas which are slightly fanned out in cross section. These in turn cut the two of each the first row of bores 2a and the second row of bores 2b outgoing injection areas. This ensures very good networking of the individual injection areas and thus a very effective sealing of the floor body.
- FIG. 6 A further exemplary schematic illustration of the arrangement of bores similar to the arrangement of bores according to FIG. 4 is shown in FIG. 6.
- the individual injection areas extend even further into the soil and form overlapping injection areas or injection planes extending along the individual bores 2a, 2b.
- a type of triple wall is formed.
- a first row of bores 2a running parallel to one another is made in the ground.
- Two injection areas, each enclosing an angle of approximately 130 °, extend from a bore.
- a row of bores 2c of the same structure is offset parallel to the first row of bores 2a.
- FIG. 8 shows a cross section transverse to a number of bores 2a, 2b, in which, when the drill head is withdrawn or even when the individual bores 2a are being driven forward, injection agent is continuously injected into the surrounding soil area while the drill head is rotating.
- columnar injection areas are formed around a bore 2a.
- the bores 2a are spaced apart from one another in such a way that the injection regions of an adjacent bore each overlap.
- Parallel to this are further bores 2b, from which individual soil layers enriched with injection agent extend, which in turn intersect the columnar injection areas around the bore 2a.
- the drill head 6 is pivoted back and forth when it is pulled back by a predetermined angle.
- Opposite nozzles are attached to the drill head in different ways Cause penetration depths of the injection agent in the surrounding bore area. This creates two pairs of injection areas in the area of a bore 2, one pair having a larger radius and the pair perpendicular to it having a smaller radius.
- the bores 2 again run parallel to one another and are spaced apart in such a way that the injection areas with a larger radius overlap. This in turn achieves an effective seal in which the floor area closest to the bore is injected absolutely tightly with injection agent.
- the pivoting angle is approximately 45 °
- the drill head is pivoted back and forth by approximately 90 to 100 °.
- FIG. 16 shows a cross section of a pipeline 20 which is encompassed in a lower partial area by two bores 2 lying parallel to one another with injection areas extending perpendicularly from each bore 2.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Claims (25)
- Procédé permettant de rendre des massifs de terre étanches, en particulier une décharge de déchets, un stockage de vieux produits ou analogues, en utilisant des substances d'étanchéité, procédé pour lequel, au moyen d'un procédé de forage à cheminement complètement commandé, on fait progresser depuis la surface, à l'extérieur du massif de terre, au moins un forage, sous le massif de terre et la substance d'étanchéité étant injectée dans la zone de sol environnante du forage,
caractérisé en ce qu'- on utilise une tête de forage à commande totale, télécommandée, et- la substance d'étanchéité est injectée pendant le déplacement longitudinal de la tête de forage dans le forage, de façon continue, dans la zone de sol du forage. - Procédé selon la revendication 1, caractérisé en ce que le forage s'étend de façon adaptée au contour du massif de terre.
- Procédé selon la revendication 2, caractérisé en ce que le forage s'étend avec un espacement de sécurité par rapport au contour du massif de terre au-dessous duquel on passe.
- Procédé selon la revendication 3, caractérisé en ce que l'espacement de sécurité est d'au moins quelques décimètres.
- Procédé selon la revendication 1, caractérisé en ce que la substance d'étanchéité est injectée dans les zones de sol voisines du forage pendant la progression et/ou le retrait de la tête de forage.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que la substance d'étanchéité est injectée dans le sol au moyen de buses disposées sur la tête de forage.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que la substance d'étanchéité est injectée dans le sol en au moins un jet en éventail.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que la substance d'étanchéité est injectée dans le sol en deux jets en éventail ou plus.
- Procédé selon la revendication 8, caractérisé en ce que les plans faits par les jets en éventails font un angle de 90° à 180°.
- Procédé selon l'une des revendication précédentes, caractérisé en ce que la substance d'étanchéité est également injectée dans le sol dans la direction longitudinale du forage.
- Procédé selon la revendication 1, caractérisé en ce qu'un nombre de forages donné, sont réalisés suivant des espacements parallèles entre eux sous les massifs de terre, le parallélisme pouvant également être obtenu depuis un site exploité en éventail.
- Procédé selon la revendication 11, caractérisé en ce que les zones de sol voisines subissant une injection de substances d'étanchéité se touchent ou se chevauchent.
- Procédé selon la revendication 12, caractérisé en ce que les zones voisines, subissant une injection de substance d'étanchéité, de chaque forage se coupent.
- Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que les zones de sol voisines subissant une injection de substance d'étanchéité sont situées les unes par rapport aux autres de manière à constituer une couche de barrage fermée, formant des goulottes situées à distance les unes des autres.
- Procédé selon la revendication 11, caractérisé en ce qu'un nombre supplémentaire de forage est réalisé, espacés et parallèles entre eux et passant sous le massif de terre, avec un espacement vertical par rapport au premier nombre de forages.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que la substance d'étanchéité n'est injectée de façon continue dans la zone de sols que dans une zone partielle le long d'un forage.
- Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'au moins un forage venant de la surface hors du massif de terre, passe sous le massif de terre et sort de la surface en un autre endroit à l'extérieur du foyer de contamination.
- Procédé selon l'une ou plusieurs des revendication précédentes, caractérisé en ce qu'un autre nombre de forages est réalisé suivant des espacements et parallèlement les uns aux autres en étant tournés de 20° à 160°, de façon idéale de 90° par rapport à un premier nombre de forages réalisés selon des espacements et parallèlement les uns aux autres en passant sous le massif de terre.
- Procédé selon la revendication 1, caractérisé en ce que la substance d'étanchéité peut être une émulsion de cire minérale, un silicate de polymère, du silicate de potassium, une résine, une émulsion de ciment en mélange avec l'une des substances d'étanchéité citées ou une autre substance cireuse.
- Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que les couches d'étanchéité constituées de substances d'étanchéité injectées et de sols naturels enclosent conjointement le massif de terre, complètement et de façon étanche.
- Procédé de contrôle d'un système d'étanchéité constitué selon l'une ou plusieurs de revendications 1 à 20, comprenant des couches de barrage constituées par injection de substances d'étanchéité et avec les étapes de procédé ci-après :- avancement de forages dont la trajectoire est complètement commandée, dans ou au-dessous des couches de barrage constituées,- introduction d'éléments de contrôle dans ces forages, et- transmission des valeurs fournies par les éléments de contrôle à des installations d'exploitation situées au-dessus de la surface.
- Procédé selon la revendication 1, caractérisé en ce que le diamètre de forage va jusqu'à un mètre.
- Utilisation d'une tête de forage pouvant être complètement commandée, dirigée à distance, avec des buses disposées dessus, au moyen desquelles une substance d'étanchéité peut être injectée dans le sol, pour mettre en oeuvre le procédé selon la revendication 1.
- Utilisation suivant la revendication 23, caractérisée par le fait que l'injection comprend une à plusieurs phases et en ce que les buses montées sur la tête de forage sont entourées par un jet d'air qui dirige sous une forme souhaitée le jet de substance d'étanchéité ou bien qui assiste la pénétration.
- Utilisation suivant la revendication 24, caractérisée en ce que concernant l'axe longitudinal de la tête de forage, une première paire de buses est disposée décalée de 5° à 180° par rapport à une deuxième paire de buse, et chacune des paires de buses comprenant deux buses opposées, chacune des buses faisant avec l'axe longitudinal de la tête de forage un angle compris dans la plage de 30° à 90°.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4313994 | 1993-04-28 | ||
DE4313994 | 1993-04-28 | ||
DE4335290 | 1993-10-15 | ||
DE4335290A DE4335290C2 (de) | 1993-04-28 | 1993-10-15 | Verfahren zur Abdichtung von Bodenkörpern und Vorrichtung zur Durchführung dieses Verfahrens |
PCT/EP1994/001352 WO1994025688A1 (fr) | 1993-04-28 | 1994-04-28 | Procede permettant de rendre des massifs de terre etanches et dispositif de mise en ×uvre dudit procede |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0690942A1 EP0690942A1 (fr) | 1996-01-10 |
EP0690942B1 true EP0690942B1 (fr) | 1997-01-08 |
EP0690942B2 EP0690942B2 (fr) | 1999-10-06 |
Family
ID=25925358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94915557A Expired - Lifetime EP0690942B2 (fr) | 1993-04-28 | 1994-04-28 | Procede permettant de rendre des massifs de terre etanches et dispositif de mise en oeuvre dudit procede |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0690942B2 (fr) |
CA (1) | CA2161779A1 (fr) |
DE (2) | DE4335290C2 (fr) |
DK (1) | DK0690942T4 (fr) |
RU (1) | RU2129191C1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109797780A (zh) * | 2017-08-06 | 2019-05-24 | 郑州丽福爱生物技术有限公司 | 一种垃圾填埋场防渗材料的铺设方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5725059A (en) * | 1995-12-29 | 1998-03-10 | Vector Magnetics, Inc. | Method and apparatus for producing parallel boreholes |
DE19729809C1 (de) * | 1997-07-11 | 1998-12-17 | Flowtex Technologie Import Von | Vorrichtung und Verfahren zum Herstellen von Bohrlochverzweigungen |
DE19747588B4 (de) * | 1997-10-28 | 2004-05-13 | Flowtex Technologie Gmbh & Co. Kg I.K. | Temperierbarer Flugplatzverkehrsweg und Verfahren zur Nachrüstung eines bestehenden Flugplatzverkehrsweges |
DE10308203B4 (de) * | 2003-02-25 | 2005-06-30 | Holl Gmbh | Verfahren und Anordnung zur Herstellung einer flüssigkeitsundurchlässigen Schicht im Erdboden |
DE102004040189B4 (de) * | 2004-08-19 | 2012-09-20 | Franki Grundbau Gmbh & Co.Kg | Verfahren zur Herstellung einer Dichtsohle im Erdreich |
US8235119B2 (en) | 2006-03-30 | 2012-08-07 | Canadian Energy Services, Lp | Drilling fluid and method for reducing lost circulation |
CA2583484C (fr) * | 2006-03-30 | 2008-12-30 | Canadian Energy Services L.P. | Methode et fluide pour forage d'une formation souterraine |
MX2009012648A (es) * | 2007-05-28 | 2009-12-16 | Engineered Drilling Solutions | Uso de cera en fluido de perforación a base de aceite. |
CN114439049B (zh) * | 2022-02-11 | 2023-09-15 | 中钢集团马鞍山矿山研究总院股份有限公司 | 一种用于固废堆体污染防治与生态修复的组合防渗体 |
CN115726817B (zh) * | 2023-01-09 | 2023-06-02 | 北京城建设计发展集团股份有限公司 | 用于山岭隧道施工的靶向止水方法 |
CN116906055B (zh) * | 2023-09-12 | 2023-11-21 | 中南大学 | 控制隧道下穿铁路路基变形的施工方法及棚架支护结构 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3330897C2 (de) * | 1983-08-26 | 1986-09-11 | Gkn Keller Gmbh, 6050 Offenbach | Verfahren und Vorrichtung zur wasser- und schadstoffdichten Einschließung von auf dem Erdboden deponierten Altablagerungen |
DE3407382C2 (de) * | 1984-02-29 | 1994-08-04 | Zueblin Ag | Verfahren zur Fertigung einer etwa waagrechten Dichtungsschicht und Vorrichtung zur Durchführung des Verfahrens |
DE3439858A1 (de) * | 1984-10-31 | 1986-04-30 | Gkn Keller Gmbh, 6050 Offenbach | Verfahren und vorrichtung zur abdichtung unterirdischer bodenmassen, insbesondere zur nachtraeglichen behandlung von deponien o.dgl. |
DE3722270A1 (de) * | 1986-07-04 | 1988-02-11 | Bilfinger Berger Bau | Verfahren und vorrichtung zur herstellung einer unterirdischen abdichtungssohle, insbesondere nachtraeglichen abdichtung von muelldeponien |
DE4033884C1 (en) * | 1990-10-25 | 1991-10-02 | Wolfgang Dipl.-Chem. Dr. 1000 Berlin De Ortlepp | Strengthening of mineral by raising its electrical conductivity - by adding water glass and/or silane(s) mixed with alkaline earth salt soln., to seal minerals and protect ground water |
DE4216473C2 (de) * | 1992-05-15 | 1994-02-24 | Ver Mitteldeutsche Braunkohlen | Verfahren zur Abdichtung von flüssigkeitsdurchlässigen Bodenschichten oder Klüften und Spalten unter oder neben Kontaminationsherden |
DE4239495C2 (de) * | 1992-11-25 | 1995-04-13 | Willibald Luber | Vorrichtung zur zerstörungsfreien Aufdeckung von Schäden an flächenhaften Abdichtungen wie auf Brücken, Wannen, Deponiesohlen und Flachdächern |
DE4310317A1 (de) * | 1993-03-30 | 1994-10-06 | Siemens Ag | Einrichtung zum Abdichten und Überwachen eines Körpers, insbesondere einer Abfalldeponie |
-
1993
- 1993-10-15 DE DE4335290A patent/DE4335290C2/de not_active Expired - Lifetime
-
1994
- 1994-04-28 EP EP94915557A patent/EP0690942B2/fr not_active Expired - Lifetime
- 1994-04-28 CA CA002161779A patent/CA2161779A1/fr not_active Abandoned
- 1994-04-28 DK DK94915557T patent/DK0690942T4/da active
- 1994-04-28 DE DE59401546T patent/DE59401546D1/de not_active Expired - Fee Related
- 1994-04-28 RU RU95120570A patent/RU2129191C1/ru active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109797780A (zh) * | 2017-08-06 | 2019-05-24 | 郑州丽福爱生物技术有限公司 | 一种垃圾填埋场防渗材料的铺设方法 |
CN109797780B (zh) * | 2017-08-06 | 2020-12-08 | 日照市德衡信息技术有限公司 | 一种垃圾填埋场防渗材料的铺设方法 |
Also Published As
Publication number | Publication date |
---|---|
RU2129191C1 (ru) | 1999-04-20 |
DK0690942T4 (da) | 2000-01-03 |
CA2161779A1 (fr) | 1994-11-10 |
EP0690942B2 (fr) | 1999-10-06 |
DK0690942T3 (da) | 1997-05-12 |
EP0690942A1 (fr) | 1996-01-10 |
DE59401546D1 (de) | 1997-02-20 |
DE4335290A1 (de) | 1995-04-06 |
DE4335290C2 (de) | 1999-03-11 |
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