CN106193169B - A kind of deep construction method of cutter suction dredger near limit digging - Google Patents
A kind of deep construction method of cutter suction dredger near limit digging Download PDFInfo
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- CN106193169B CN106193169B CN201610704918.3A CN201610704918A CN106193169B CN 106193169 B CN106193169 B CN 106193169B CN 201610704918 A CN201610704918 A CN 201610704918A CN 106193169 B CN106193169 B CN 106193169B
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- ship
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- piling bar
- depth
- accommodation
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- 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
- E02F9/06—Floating substructures as supports
-
- 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
- E02F9/06—Floating substructures as supports
- E02F9/062—Advancing equipment, e.g. spuds for floating dredgers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Deep construction method is dug the present invention relates to a kind of cutter suction dredger near limit, 1), the construction technology that ship near limit excavates is formulated according to ship performance, soil property, tide type etc.；2) it, determines underwater piling bar safe length, reserves enough excess lengths and intensity, according to ship whether there is slow stake mechanism to determine its construction area；Assuming that piling bar vertical and horizontal mud face when the ship limit digs deep construction, calculates rationally effective accommodation：3), bridge is transferred to when designing angle maximum value over the ground, makes hull center of gravity to Forward, stem, which absorbs water, to be increased, while ship aft draft reduces, to make reamer decentralization depth increase；4), construction area is single construction, can also include adjacent parallel 2 job executions in construction area.The present invention can carry out the construction for digging deep dredging and reclamation class engineering greatly, improve the adaptability of dredger, near limit excavation construction can be carried out on the basis of nominal depth of dredging, the limitation of ship self performance has been freed, great space is provided in terms of ship selection.
Description
Technical field
The invention belongs to port engineering dredging technology fields, dig deep apply more particularly to a kind of cutter suction dredger near limit
Work method.
Background technique
China builds and has upgraded a collection of deep water port successively to adapt to rapid development of economy, while to construction dredger
Digging deep ability, more stringent requirements are proposed, therefore digs deep ability as one to increase ship on the basis of not changing Ship Structure
A problem.
Construction continuity, precision are high, high-efficient are widely used in Dredging and filling engineering because it has for cutter suction dredger
In, but in the biggish area of the region by tidal effect, especially tidal range, cutting depth is by pole when ship continuity is constructed
Big limitation, low so as to cause ship construction efficiency, construction speed is slow.
Summary of the invention
The present invention is to solve technical problem present in well-known technique and provide a kind of in the biggish area strand suction of tidal range
The construction method of dredger, can solve the ship piling bar excess length in the larger situation of the depth of water by the method not enough causes out
The cutter suction dredger near limit for digging the limited problem of depth digs deep construction method.
The present invention is adopted the technical scheme that solve technical problem present in well-known technique：
A kind of cutter suction dredger near limit digs the construction method of depth, it is characterised in that：This approach includes the following steps：
Step 1, the construction technology that ship near limit excavates is formulated according to ship performance, soil property, tide type etc..
Step 2, it determines underwater piling bar safe length, reserves enough excess lengths and intensity, whether had according to ship
Slow stake mechanism determines its construction area；
Reserve enough excess length HFAnd intensity, underwater piling bar length is determined according to formula：
H=HE+HB+h+(D-d)+HF
In formula：H-piling bar overall length (m), HE- maximum dredging depth (m), HBUnder-ship deck baseline to commandant's rope stress
On along the shortest distance (m), h-guide pile 1 is inserted into soil depth (m), generally takes 2~3m, D-ship moldeed depth (m), d-ship stern
It absorbs water (m), HF- excess length (m), minimum 1.5~2m of value；
Assuming that piling bar vertical and horizontal mud face when the ship limit digs deep construction, calculates rationally effective accommodation according to formula：
L=l1cosα+l2cos(α+β)+l3
In formula：The effectively accommodation (m) L-, l1- piling bar trolley 0m datum mark is to bridge trunnion spacing (m), l2- bridge trunnion
To reamer distance (m), l3- safe distance, suitable 15m or so, α-ship trim angle, β-ship gantry design the limit over the ground
Angle；
Step 3, bridge is transferred to when designing angle maximum value over the ground, utilizes the fresh water of cabin, fuel oil or heavy object
Part etc. adjusts the ballast position of ship, makes hull center of gravity to Forward, stem drinking water increases, while ship aft draft reduces, to make
Reamer is transferred depth and is increased；The height on drinking water situation of the trim maximum value depending on hull corner location, the water surface and deck is minimum
Not preferably less than 50cm；
Step 4, (1) is if construction area is single construction, whenever one, drilling depth effective accommodation (piling bar trolley to gantry pole of constructing
The lateral vertical range L of reamer, is formulated according to Ship Structure parameter after limit decentralization) after the completion of, ship then retreats accommodation continuation
It excavates, and intact with upper accommodation overlap joint, guarantees the piling bar moment on resting on original mud face, single carries out (2) repeatedly
If construction area includes adjacent parallel 2 operating areas, when there is an excavation to finish an accommodation, using ship side anchor winch by ship
Move in adjacent construction item, then unmoor ship stern is pushed on middle line, continuation construct in Article 2, similarly toward complex Alternating into
Row.
The invention has the advantages and positive effects that：The present invention can carry out digging applying for deep dredging and reclamation class engineering greatly
Work improves the adaptability of dredger, and near limit excavation construction can be carried out on the basis of nominal depth of dredging, has freed ship certainly
The limitation of body performance provides great space in terms of ship selection.
This engineering method is advanced optimized for engineering soil property feature of re-blowing and is applied based on the mature way of traditional hydraulic reclamation project
Work technique, is rationally effectively controlled hydraulic reclamation area flatness, process is simple and direct controllable, and basic guarantee social resources maximize benefit
With improving overall operation efficiency.
Detailed description of the invention
Fig. 1 is construction technology figure (single) of the invention；
Fig. 2 is that Fig. 1 excavates lateral side view；
Fig. 3 is construction technology figure of the invention (two or more)；
Fig. 4 is piling bar head factory exploded view.
In figure；1, piling bar；2, trunnion；3, bridge；4, reamer；5, bridge rises and falls wirerope；6, bow；7, stern；8, original
Mud face；9, cabin；10, deck；
Specific embodiment：
In order to further understand the content, features and effects of the present invention, and being described in detail with the accompanying drawings as follows：
Step 1, the construction technology that rational ship near limit excavates；
Step 2, enough excess length H are reservedFAnd intensity, underwater 1 length of piling bar (see Fig. 4) is determined according to formula：
H=HE+HB+h+(D-d)+HF
In formula：1 overall length (m) of H-piling bar, HE- maximum dredging depth (m), HB- ship deck baseline to commandant restrict stress
Along the shortest distance (m) on lower, h-guide pile 1 is inserted into soil depth (m), generally takes 2~3m, D-ship moldeed depth (m), d-ship
Aft draft (m), HF- excess length (m), minimum 1.5~2m of value.
Assuming that 1 vertical and horizontal mud face 8 of piling bar when the ship limit digs deep construction, calculates rationally effective accommodation according to formula：
L=l1cosα+l2cos(α+β)+l3
In formula：The effectively accommodation (m) L-, l11 trolley 0m datum mark of-piling bar is to 2 spacing (m) of bridge trunnion, l2- gantry ear
Axis 2 is to reamer 4 apart from (m), l3- safe distance, suitable 15m or so, α-ship trim angle, β-ship gantry design is over the ground
Extreme angles.
Step 3, the decentralization of bridge 3 is utilized into the fresh water, fuel oil or heavy of cabin 9 to when designing angle maximum value over the ground
Object etc. adjusts the ballast position of ship, makes hull center of gravity to Forward, and the drinking water of bow 6 increases, while the drinking water of stern 7 reduces, from
And so that reamer 4 is transferred depth and increase.Trim maximum value depends on the drinking water situation of hull corner location, the height of the water surface and deck 10
Spend the minimum not preferably less than 50cm of D.
Step 4, when (1) Fig. 1 is that single is constructed, after the completion of one, drilling depth effective accommodation of constructing, ship then retreats one
Accommodation continues to excavate, and intact with upper accommodation overlap joint, guarantees 1 moment of piling bar on resting on original mud face 8, single is so anti-
It is multiple to carry out, for shown in Fig. 2 after excavation；
(2) it when Fig. 3 is adjacent parallel 2 and 2 or more, when there is an excavation to finish an accommodation, is twisted using ship side anchor
Vehicle moves to ship in adjacent construction item, and stern 7 is pushed on middle line by ship of then unmooring, and continuation is constructed in Article 2, similarly past
Complex Alternating carries out.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (1)
1. a kind of cutter suction dredger near limit digs deep construction method, it is characterised in that：Include the following steps：
Step 1, the construction technology that ship near limit excavates is formulated according to ship performance, soil property, tide type；
Step 2, it determines underwater piling bar safe length, reserves enough excess lengths and intensity, whether slow stake is had according to ship
Mechanism determines its construction area；
Reserve enough excess length HFAnd intensity, underwater piling bar length is determined according to formula：
H=HE+HB+h+(D-d)+HF
In formula：H-piling bar overall length (m), HE- maximum dredging depth (m), HB- ship deck baseline upper edge under restricting stress to commandant
The shortest distance (m)；H-piling bar insertion soil depth (m), piling bar insertion soil depth take 2~3m；D-ship moldeed depth (m)；d—
Ship aft draft (m)；HF- excess length (m), 1.5~2m of excess length (m) value；
Assuming that piling bar calculates rationally effective accommodation according to formula perpendicular to horizontal mud face when the ship limit digs deep construction：
L=l1cosα+l2cos(α+β)+l3
In formula：The effectively accommodation (m) L-, l1- piling bar trolley 0m datum mark is to bridge trunnion spacing (m), l2- bridge trunnion extremely twists
Knife distance (m)；l3- safe distance, safe distance 15m；α-ship trim angle, β-ship gantry design the limit over the ground
Angle；
Step 3, bridge is transferred to when designing angle maximum value over the ground, utilizes the fresh water of cabin, fuel oil or heavy object tune
The ballast position of whole ship oceangoing ship makes hull center of gravity to Forward, and stem drinking water increases, while ship aft draft reduces, to make under reamer
Put depth increase；The height on drinking water situation of the trim maximum value depending on hull corner location, the water surface and deck is minimum unsuitable low
In 50cm；
Step 4, (1) if construction area be single construction, whenever construction one effective accommodation of drilling depth, after the completion, ship then retreats one
Accommodation continues to excavate, and intact with upper accommodation overlap joint, guarantees the piling bar moment on resting on original mud face, single is repeatedly
It carries out；(2) if construction area includes adjacent parallel 2 operating areas, when there is an excavation to finish an accommodation, ship side anchor is utilized
Winch moves to ship in adjacent construction item, and stern is pushed on middle line by ship of then unmooring, and continuation is constructed in Article 2, similarly past
Complex Alternating carries out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610704918.3A CN106193169B (en) | 2016-08-22 | 2016-08-22 | A kind of deep construction method of cutter suction dredger near limit digging |
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| CN201610704918.3A CN106193169B (en) | 2016-08-22 | 2016-08-22 | A kind of deep construction method of cutter suction dredger near limit digging |
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| CN106193169A CN106193169A (en) | 2016-12-07 |
| CN106193169B true CN106193169B (en) | 2018-11-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107366257B (en) * | 2017-05-24 | 2022-09-06 | 中交(天津)疏浚工程有限公司 | Remote sand taking and throwing construction process |
| CN109750705B (en) * | 2019-03-12 | 2020-08-25 | 中交天津航道局有限公司 | Automatic dredging control method for target parameters of cutter suction dredger |
| CN110541441A (en) * | 2019-09-17 | 2019-12-06 | 中交烟台环保疏浚有限公司 | Construction method for retreating and dredging cutter suction dredger |
| CN112302041A (en) * | 2019-11-27 | 2021-02-02 | 海南发控智慧环境建设集团有限公司 | Sea entrance foundation rock type ecological island reef construction method |
| CN115094967B (en) * | 2022-06-17 | 2024-01-16 | 江苏筑港建设集团有限公司 | Dredger dredging construction method for cutter suction dredger |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4212121A (en) * | 1978-07-31 | 1980-07-15 | Mitsubishi Jukogyo Kabushiki Kaisha | Method and apparatus for dredging having bow-stern movement of the suction means |
| CN100378275C (en) * | 2004-08-27 | 2008-04-02 | 中交天津港航勘察设计研究院有限公司 | Automatic dredging depth controller for cutter suction dredger |
| CN102518161B (en) * | 2011-12-31 | 2014-08-13 | 中交广州航道局有限公司 | Direct elevation control dredging method for dredge ship |
| SI2639359T1 (en) * | 2012-03-16 | 2017-04-26 | Jan De Nul N.V. | Dredging equipment and method for dredging or mining with such equipment |
| CN103015479B (en) * | 2012-12-24 | 2014-12-10 | 中国船舶重工集团公司第七○二研究所 | Biological dredging platform and method |
| NL2012654B1 (en) * | 2014-04-18 | 2016-07-04 | Ihc Holland Ie Bv | Universal cover for cutter head. |
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