WO1999041463A1 - Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method - Google Patents
Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method Download PDFInfo
- Publication number
- WO1999041463A1 WO1999041463A1 PCT/BE1999/000018 BE9900018W WO9941463A1 WO 1999041463 A1 WO1999041463 A1 WO 1999041463A1 BE 9900018 W BE9900018 W BE 9900018W WO 9941463 A1 WO9941463 A1 WO 9941463A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- water jets
- rock
- teeth
- draghead
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000011435 rock Substances 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000005520 cutting process Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000004927 clay Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 208000004188 Tooth Wear Diseases 0.000 claims description 2
- 239000000306 component Substances 0.000 claims 11
- 238000006073 displacement reaction Methods 0.000 claims 4
- 238000009412 basement excavation Methods 0.000 claims 2
- 238000005336 cracking Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9268—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements
- E02F3/9275—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements with axis of rotation parallel to longitudinal axis of the suction pipe
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
- E02F5/287—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with jet nozzles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
- E02F9/2808—Teeth
- E02F9/2816—Mountings therefor
- E02F9/2825—Mountings therefor using adapters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/60—Slitting by jets of water or other liquid
Definitions
- This invention relates to a method for working through ground layers, which are understood to include gravel, sand and clay layers or ground layers containing rock-like materials or consisting virtually exclusively of rock masses such as rock layers, with dredgers or excavators such as suction hopper dredgers, suction cutter dredgers, bucket dredgers, grab dredgers, pull shovel pontoons or the like, wherein a part of the mechanical cutting or excavating component comes into contact with the ground and/or rock layers for excavating.
- dredgers or excavators such as suction hopper dredgers, suction cutter dredgers, bucket dredgers, grab dredgers, pull shovel pontoons or the like, wherein a part of the mechanical cutting or excavating component comes into contact with the ground and/or rock layers for excavating.
- water jets are injected in the area where the cutting or excavating component is active at a pressure which is sufficiently high to cut open the ground layers, such as clay layers, and/or cause the ground layers, such as sand layers, to fluidize in the vicinity of the cutting or excavating component and, when the ground layers contain rock-like materials or consist virtually or exclusively of rock-like materials such as rock layers, to immediately remove broken-off and crushed materials from the location where the mechanical cutting or excavating component is active and to enhance the hydraulic fracturing in the non-crushed material in the immediate vicinity of the crushed material .
- Figure 1 is a schematic view of- the principle on which the method according to the invention is based in the case of a tooth as mechanical cutting or excavating component .
- Figures 2 and 3 are schematic representations in side view of the head of a suction hopper dredger during application of the method according to the invention.
- Figure 4 is a side view of a tooth with adapter in a possible embodiment according to the invention, i.e. with at least one water jet under high pressure through the tooth.
- Figure 4A is a side view of an adapter as according to a variant.
- Figure 5 shows a cross-section along the line V-V of figure 4.
- Figure 5A shows a longitudinal section along the same line of an adapter as according to figure 4A.
- Figure 6 is a perspective view of an adapter with tooth mounted thereon in an embodiment according to the invention.
- Figure 7 shows in perspective view a variant of the embodiment of figure 6.
- Figure 8 illustrates schematically the operation of the teeth on a suction cutter dredger.
- Figure 1 is a very schematic view which serves to elucidate the method according to the invention. If reference is made with 1 to for instance a stone-like ground mass and with 2 to a tooth as the active part of a cutting or excavating component, it is then essential that the tooth structure (in a suction cutter dredger for instance) be disposed such that during cutting of the ground the impact point 3 of the tooth and the water jet 4 practically coincide.
- this fracture zone When the pressure of the water jet covering this fracture zone is sufficiently high, for instance amounts to at least 100 bar, this fracture zone will then initiate further cracking, which results in hydraulic fracturing, and breakage remnants will be removed from the fracture zone. As a consequence hereof a lower cutting power will be noted and thus less wear because a large part of the broken-off materials associated with this fracture zone are removed by the water jet.
- the nozzle through which water jet 4 is injected can be situated just behind tooth 2 (figure 2) while in the embodiment of figure 3 the tooth 2' is designed such that water jet 4' is injected through the tooth.
- a tooth structure is designed according to the invention which, referring to figures 4, 4A, 5, 5A and 6, have the following features.
- Tooth 2' is mounted, as is usual, on an adapter 6 which for instance forms part of the rotating cutter or is fixed onto a transverse beam of the draghead.
- an adapter 6 which for instance forms part of the rotating cutter or is fixed onto a transverse beam of the draghead.
- at least one high-pressure conduit 7 is provided through adapter 6.
- This high-pressure conduit 7 ends in a short nozzle 8 or an extended nozzle 8 ' which, when tooth 2 ' is mounted on adapter 6, comes to lie in the line of the bore 9 running through tooth 2 ' .
- This tooth structure results in a maximum co-action between tooth and high-pressure water jet, which results in a considerable reduction in the wear of the tooth.
- dredging is carried out in rock-like ground masses or rocks, the broken-off materials will be removed by the high-pressure water jets so that the teeth will operate in the most favourable conditions .
- a variant of the embodiment described by figure 6 consists of providing two bores 9' through tooth 2' and providing the adapter with two nozzles 8 or 8 1 .
- Both bores 9 ' must be directed such that , as the outer end of tooth 2 1 wears, an injection by both water jets under high pressure toward the impact point of the tooth con- tinues to take place which becomes wider as the tooth wears .
- Figure 8 shows very clearly the method according to the invention for a suction cutter dredger.
- the same figure shows schematically the operation of teeth 2 or 2 ' in the ground or rock mass 10 for the same rotation direction and two opposed swinging movements of the suction cutter dredger.
- the rotation direction is indicated with arrows 11, the swinging movements with arrows 12 and 13.
- the water jets under high pressure are injected at least for a duration which corresponds with the time for which the teeth 2 or 2 ' are active, i.e. remain in contact with the ground mass for excavating or dredging. Due to the action of the high- pressure water jets the broken materials are removed so that they do not obstruct the optimal operation of the teeth and ensure the increased lifespan of the teeth.
- the action of the high-pressure water jets also initiates and enhances the hydraulic fracturing. It is therefore necessary in this option to ensure by means of valves the water flow rate under high pressure to at least the "active" or operational teeth.
- a plurality of dispositions of the high-pressure water jets can be devised. Reference is made once again to figures 2 and 3 as an example of suction hopper dredgers.
- the nozzles for high-pressure water jets 4 of at least 50 bar are mounted on the heel plate 14 of draghead 15 and provide a first hydraulic working of the ground.
- a second row of nozzles is arranged behind teeth 2, this such that water jets 4* of at least 20 bar are directed toward the outer end of teeth 2, with a second row of nozzles for injecting water jets 4" of at least 20 bar toward the interior of the draghead 15 to cause the already cut material to undergo an additional cutting operation.
- a suction hopper dredger use can also be made of the above described tooth structure which enables injection of the water jets through tooth 2' with its adapter 6.
- water jets 4 are caused to act from the heel plate 14 of draghead 15 in one line between respective teeth 2 or 2', these water jets then provide an initially vertical cutting or fracture plane in one line ⁇ between teeth 2 or 2 ' , while water jets 4' and 4" with the teeth 2 or 2 ' co-acting therewith cause further fracture of the intermediate ground material of these vertical planes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Earth Drilling (AREA)
- Special Spraying Apparatus (AREA)
- Shovels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU24051/99A AU755886B2 (en) | 1998-02-13 | 1999-02-10 | Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method |
BR9907858-9A BR9907858A (en) | 1998-02-13 | 1999-02-10 | Process and apparatus for working through layers of soil and tooth with adapter, for use in the apparatus |
IL13780399A IL137803A0 (en) | 1998-02-13 | 1999-02-10 | Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method |
JP2000531633A JP2002503775A (en) | 1998-02-13 | 1999-02-10 | Method of working through ground and bedrock using a dredge or excavator and device operating based on the method |
DE69918804T DE69918804T2 (en) | 1998-02-13 | 1999-02-10 | METHOD FOR PROCESSING FLOOR AND STONE LAYERS WITH SUCTION OR BUCKET MACHINES AND DEVICE WORKING THROUGH THIS METHOD |
EP99903547A EP1055033B1 (en) | 1998-02-13 | 1999-02-10 | Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method |
EEP200000453A EE200000453A (en) | 1998-02-13 | 1999-02-10 | Method and device for dredging underwater layers and tooth used in the device with adapter |
NZ506837A NZ506837A (en) | 1998-02-13 | 1999-02-10 | Dredging/excavating through ground layers using water nozzles at 20 and 50 bar respectively behind/through and in front of dredging component |
US09/636,830 US6449883B1 (en) | 1998-02-13 | 2000-08-14 | Method and device for dredging underwater ground layers |
HK01103052A HK1034104A1 (en) | 1998-02-13 | 2001-04-27 | Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9800111 | 1998-02-13 | ||
BE9800111A BE1011744A4 (en) | 1998-02-13 | 1998-02-13 | Method for through ground and rock layers using or-dredging excavators and by this method operating systems. |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/636,830 Continuation-In-Part US6449883B1 (en) | 1998-02-13 | 2000-08-14 | Method and device for dredging underwater ground layers |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999041463A1 true WO1999041463A1 (en) | 1999-08-19 |
Family
ID=3891092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BE1999/000018 WO1999041463A1 (en) | 1998-02-13 | 1999-02-10 | Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method |
Country Status (23)
Country | Link |
---|---|
US (1) | US6449883B1 (en) |
EP (1) | EP1055033B1 (en) |
JP (1) | JP2002503775A (en) |
KR (1) | KR100575205B1 (en) |
AR (1) | AR014572A1 (en) |
AU (1) | AU755886B2 (en) |
BE (1) | BE1011744A4 (en) |
BR (1) | BR9907858A (en) |
DE (1) | DE69918804T2 (en) |
DK (1) | DK1055033T3 (en) |
EE (1) | EE200000453A (en) |
ES (1) | ES2226334T3 (en) |
GB (1) | GB2334272A (en) |
GC (1) | GC0000097A (en) |
HK (1) | HK1034104A1 (en) |
ID (1) | ID27177A (en) |
IL (1) | IL137803A0 (en) |
MY (1) | MY126437A (en) |
NZ (1) | NZ506837A (en) |
PT (1) | PT1055033E (en) |
TW (1) | TW491920B (en) |
WO (1) | WO1999041463A1 (en) |
ZA (1) | ZA991103B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19960361A1 (en) * | 1999-12-14 | 2001-06-21 | Krupp Foerdertechnik Gmbh | Drag head for suction excavators |
US6845824B2 (en) * | 2003-04-30 | 2005-01-25 | Mark R. Miskin | Air assisted loading bucket scraper and air assisted loading methods |
NO323879B1 (en) * | 2003-09-01 | 2007-07-16 | Fossura As | Underwater digging and suction device |
BE1016291A3 (en) * | 2004-09-10 | 2006-07-04 | Dredging Int | Towing head for a towing hopper and method for dredging using this towing head. |
ES2337897T3 (en) * | 2004-10-26 | 2010-04-30 | Ihc Holland Ie B.V. | METHOD FOR PERFORMING A SUBMARINE DRAGING OPERATION AND DRAGING INSTALLATION |
CN1766240A (en) * | 2004-10-26 | 2006-05-03 | Ihc荷兰公司 | Cutting member of mud digging system |
EP1872017A1 (en) * | 2005-03-15 | 2008-01-02 | Mark R. Miskin | Hydraulic lift assist for tractor towed earth moving apparatus |
BE1018348A3 (en) * | 2008-11-12 | 2010-09-07 | Dredging Int | CUTTING HEAD FOR DAGGING LAND AND METHOD FOR DAGGING USING THIS CUTTING KNOB. |
BE1018378A3 (en) * | 2008-12-12 | 2010-09-07 | Dredging Int | Towing head for a towing hopper and method for dredging using this towing head. |
CN101879477B (en) * | 2010-05-20 | 2012-03-28 | 中南大学 | Test device for excavating and stripping cobalt crust and hydrothermal sulfide in deep sea |
CN102198416B (en) * | 2011-03-21 | 2013-04-03 | 湖南工程学院 | High-pressure water jetting device |
BE1020438A4 (en) * | 2012-05-21 | 2013-10-01 | Baggerwerken Decloedt En Zoon | SUCTION HEAD FOR A DREDGING SHIP AND METHOD FOR DRAGGING USING THIS SUCTION HEAD. |
SG11201510211YA (en) * | 2013-08-23 | 2016-03-30 | Exxonmobil Upstream Res Co | Pipeline burial in offshore and arctic offshore regions |
US10151079B2 (en) | 2016-04-21 | 2018-12-11 | Bisso Marine, LLC | Underwater pipeline burying apparatus and method |
CN108203999A (en) * | 2018-02-14 | 2018-06-26 | 中交天航港湾建设工程有限公司 | A kind of dredging drag head single side bath vomerine tooth |
EP3543408B1 (en) * | 2018-03-21 | 2020-10-21 | BAUER Spezialtiefbau GmbH | Slurry wall mill and method for creating a milled slit in the ground |
Citations (11)
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BE356816A (en) * | ||||
DE2223942A1 (en) * | 1972-05-17 | 1973-11-29 | Harmstorf Kg Dieter | METHOD AND DEVICE FOR OPERATING DISPENSER |
GB1422693A (en) * | 1972-11-11 | 1976-01-28 | Kumagai Gumico Ltd | Method and apparatus for boring a pit in earth |
EP0078080A1 (en) * | 1981-10-22 | 1983-05-04 | Stichting Speurwerk Baggertechniek | A method and apparatus for dredging rock |
DE3346306A1 (en) * | 1983-12-22 | 1985-07-04 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | BUCKET WHEEL EXCAVATOR |
US4586850A (en) * | 1983-07-12 | 1986-05-06 | Norman Robert M | Underwater trenching system |
DE3521560A1 (en) * | 1985-06-15 | 1986-05-28 | Fried. Krupp Gmbh, 4300 Essen | Excavator and method of operating it |
US4705321A (en) * | 1985-06-13 | 1987-11-10 | Santrade Limited | Device for supplying fluid to a tool for breaking hard material |
DE3817213C1 (en) * | 1988-05-20 | 1989-01-12 | Peter 2244 Suederdeich De Pautz | Hydraulic harrow |
JPH0539696A (en) * | 1991-08-07 | 1993-02-19 | Hakko Co Ltd | Excavating pipe rotating device for pneumatic soil excavating device |
WO1994025191A1 (en) * | 1993-05-03 | 1994-11-10 | Bruso Bruce L | Method and apparatus for in situ soil remediation |
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US3554602A (en) * | 1968-07-24 | 1971-01-12 | Sun Oil Co | Excavating method and apparatus |
US3706185A (en) * | 1970-06-23 | 1972-12-19 | Merle P Chaplin | Apparatus for removing marine growths and roots |
US4150503A (en) * | 1972-08-22 | 1979-04-24 | Pierre Lespinasse | Apparatus for excavation and earth removal from aquatic bottoms |
DE2813142C3 (en) * | 1978-03-25 | 1986-07-31 | Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum | Combined cutting tool for cutting minerals in contact with a mining work surface |
NL7904177A (en) * | 1979-05-28 | 1980-12-02 | Hollandsche Aanneming Bv | METHOD FOR DREDGING SUBSTRATE GROUND MATERIAL AND AN APPARATUS FOR PERFORMING THE METHOD |
US4836613A (en) * | 1984-10-09 | 1989-06-06 | Adam Roger F J | Cutterhead for water jet assisted cutting |
DE3836074A1 (en) * | 1987-10-26 | 1989-05-03 | De Beers Ind Diamond | CUTTING CHISEL |
US4946227A (en) * | 1989-05-22 | 1990-08-07 | Esso Resources Canada Limited | Bucket wheel assembly |
JP2681337B2 (en) * | 1994-02-04 | 1997-11-26 | 西日本システム建設株式会社 | Automatic drilling equipment |
JPH0860695A (en) * | 1994-08-22 | 1996-03-05 | Mitsubishi Heavy Ind Ltd | Small scale dredging mechanism |
-
1998
- 1998-02-13 BE BE9800111A patent/BE1011744A4/en not_active IP Right Cessation
- 1998-04-22 GB GB9808594A patent/GB2334272A/en not_active Withdrawn
-
1999
- 1999-02-10 KR KR1020007008886A patent/KR100575205B1/en not_active IP Right Cessation
- 1999-02-10 JP JP2000531633A patent/JP2002503775A/en active Pending
- 1999-02-10 EE EEP200000453A patent/EE200000453A/en unknown
- 1999-02-10 PT PT99903547T patent/PT1055033E/en unknown
- 1999-02-10 DE DE69918804T patent/DE69918804T2/en not_active Expired - Lifetime
- 1999-02-10 EP EP99903547A patent/EP1055033B1/en not_active Expired - Lifetime
- 1999-02-10 ID IDW20001801A patent/ID27177A/en unknown
- 1999-02-10 BR BR9907858-9A patent/BR9907858A/en not_active Application Discontinuation
- 1999-02-10 NZ NZ506837A patent/NZ506837A/en unknown
- 1999-02-10 WO PCT/BE1999/000018 patent/WO1999041463A1/en active IP Right Grant
- 1999-02-10 AU AU24051/99A patent/AU755886B2/en not_active Ceased
- 1999-02-10 ES ES99903547T patent/ES2226334T3/en not_active Expired - Lifetime
- 1999-02-10 IL IL13780399A patent/IL137803A0/en unknown
- 1999-02-10 DK DK99903547T patent/DK1055033T3/en active
- 1999-02-11 MY MYPI99000475A patent/MY126437A/en unknown
- 1999-02-11 TW TW088102142A patent/TW491920B/en not_active IP Right Cessation
- 1999-02-11 ZA ZA9901103A patent/ZA991103B/en unknown
- 1999-02-12 AR ARP990100604A patent/AR014572A1/en active IP Right Grant
- 1999-02-13 GC GCP199981 patent/GC0000097A/en active
-
2000
- 2000-08-14 US US09/636,830 patent/US6449883B1/en not_active Expired - Lifetime
-
2001
- 2001-04-27 HK HK01103052A patent/HK1034104A1/en not_active IP Right Cessation
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BE356816A (en) * | ||||
DE2223942A1 (en) * | 1972-05-17 | 1973-11-29 | Harmstorf Kg Dieter | METHOD AND DEVICE FOR OPERATING DISPENSER |
GB1422693A (en) * | 1972-11-11 | 1976-01-28 | Kumagai Gumico Ltd | Method and apparatus for boring a pit in earth |
EP0078080A1 (en) * | 1981-10-22 | 1983-05-04 | Stichting Speurwerk Baggertechniek | A method and apparatus for dredging rock |
US4586850A (en) * | 1983-07-12 | 1986-05-06 | Norman Robert M | Underwater trenching system |
DE3346306A1 (en) * | 1983-12-22 | 1985-07-04 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | BUCKET WHEEL EXCAVATOR |
US4705321A (en) * | 1985-06-13 | 1987-11-10 | Santrade Limited | Device for supplying fluid to a tool for breaking hard material |
DE3521560A1 (en) * | 1985-06-15 | 1986-05-28 | Fried. Krupp Gmbh, 4300 Essen | Excavator and method of operating it |
DE3817213C1 (en) * | 1988-05-20 | 1989-01-12 | Peter 2244 Suederdeich De Pautz | Hydraulic harrow |
JPH0539696A (en) * | 1991-08-07 | 1993-02-19 | Hakko Co Ltd | Excavating pipe rotating device for pneumatic soil excavating device |
WO1994025191A1 (en) * | 1993-05-03 | 1994-11-10 | Bruso Bruce L | Method and apparatus for in situ soil remediation |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 330 (M - 1434) 23 June 1993 (1993-06-23) * |
Also Published As
Publication number | Publication date |
---|---|
GB2334272A (en) | 1999-08-18 |
IL137803A0 (en) | 2001-10-31 |
ES2226334T3 (en) | 2005-03-16 |
AU2405199A (en) | 1999-08-30 |
US6449883B1 (en) | 2002-09-17 |
GC0000097A (en) | 2005-06-29 |
EP1055033B1 (en) | 2004-07-21 |
DE69918804T2 (en) | 2005-07-21 |
PT1055033E (en) | 2004-12-31 |
ZA991103B (en) | 1999-08-12 |
EP1055033A1 (en) | 2000-11-29 |
DE69918804D1 (en) | 2004-08-26 |
EE200000453A (en) | 2001-12-17 |
ID27177A (en) | 2001-03-08 |
MY126437A (en) | 2006-10-31 |
GB9808594D0 (en) | 1998-06-24 |
AR014572A1 (en) | 2001-02-28 |
BE1011744A4 (en) | 1999-12-07 |
AU755886B2 (en) | 2003-01-02 |
BR9907858A (en) | 2000-10-24 |
DK1055033T3 (en) | 2004-11-29 |
NZ506837A (en) | 2003-03-28 |
JP2002503775A (en) | 2002-02-05 |
TW491920B (en) | 2002-06-21 |
KR100575205B1 (en) | 2006-05-02 |
KR20010040957A (en) | 2001-05-15 |
HK1034104A1 (en) | 2001-10-12 |
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