CN104594419B - A kind of Grab excavates the construction method of dangerous explosive - Google Patents
A kind of Grab excavates the construction method of dangerous explosive Download PDFInfo
- Publication number
- CN104594419B CN104594419B CN201410741061.3A CN201410741061A CN104594419B CN 104594419 B CN104594419 B CN 104594419B CN 201410741061 A CN201410741061 A CN 201410741061A CN 104594419 B CN104594419 B CN 104594419B
- Authority
- CN
- China
- Prior art keywords
- grab
- bucket
- grab bucket
- construction method
- excavates
- 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.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 239000002360 explosive Substances 0.000 title claims abstract description 26
- 238000005553 drilling Methods 0.000 claims description 24
- 238000004140 cleaning Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000010779 crude oil Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Abstract
The present invention provides the construction method that a kind of Grab excavates dangerous explosive, using the grab bucket dredger operation for relying on anchor chain positioning, being equipped with two sets of grab buckets, it is characterised in that：Grab bucket after mud, open and support rope brake, sink bucket in He Dou, checked when bucket is closed to 15%~25% and support rope to be closed completely to grabbing bucket；Speed control is transferred when grabbing bucket into mud bucket current control is closed in 20~30m/min, grab bucket closure in 1~3A.Using construction method of the present invention, construction quality improves a lot, and shallow point is seldom, and the ultra-deep side of giving up amount reduces, it is ensured that the task of cleaning bomb is completed on the premise of safety.
Description
Technical field
It is more particularly to a kind of that dangerous explosive is excavated using Grab the present invention relates to ship dredging construction technology field
Construction method.
Background technology
Remote crude oil pipeline project is China in Burma's key strategy project, its crude oil terminal and navigation channel work in Burma's Kyaukpyu port
Journey is even more the most important thing, and crude oil Measure Points in Waterway Dredging Area has the suspected explosives such as a large amount of shells left in World War II, bomb.Construction
Soil property is mud and flour sand, and with a large amount of bombs.Due to being unfamiliar with to environments such as subsea, it is especially small to dig bomb plus first time
The heart, is put into mud speed under grab bucket and closing speed is too slow, influences production efficiency.Grab bucket digs and arrives fritter rubble or strong in construction
Caking flour sand causes grab bucket to be closed, and bucket is not tight, some bombs, shell drop to Barge Self-Propelled deck from grab bucket gap, easily endanger
Danger.
The content of the invention
In view of the above shortcomings of the prior art, the present invention provides the construction method that a kind of Grab excavates dangerous explosive,
In the case where ensuring ship and personnel safety, production efficiency is high for the construction, and the duration of runs is short.
The technical proposal of the invention is realized in this way：
A kind of construction method of the dangerous explosive of Grab excavation, is grabbed using what is grabbed bucket by anchor chain positioning, two sets of outfit
Bucket-ladder dredger operation, it is characterised in that：Grab bucket after mud, open and support rope brake, sink bucket in He Dou, wait to close and struggle against to 15%
Checked when~25% and support rope to closure completely of grabbing bucket；Speed control is transferred when grabbing bucket into mud in 20~30m/min, grab bucket closure
Shi Hedou current controls are in 1~3A.
Wherein it is preferred to dangerous explosive is before dress is refuted, it is first rebasing as buffering in the built-in part silt of self-propelled hopper
Layer.
Wherein it is preferred to after the completion of per subjob, Grab reach distance is 0.6~0.7 times of grab bucket tonicity.
Wherein it is preferred to two sets of grab buckets one are 18m3Grab bucket, another is 6m3Grab bucket；Use 18m3During grab bucket,
After the completion of per subjob, Grab reach distance is 5~7m, uses 6m3During grab bucket, Grab reach distance is 3~5m.
Wherein it is preferred to grab bucket when determining that flow velocity is very big according to flow rate of water flow, DGPS anchor points and power supply for construction subgraph paper
The scale of drilling depth.
Wherein it is preferred in basin during the door of construction fore face navigation channel mouthful, construction grab bucket drilling depth adds 1 meter at the incoming tide, moves back
Time of tide construction grab bucket drilling depth subtracts 1 meter；When big flood tide arrives, drilling depth of grabbing bucket at the incoming tide adds 2 meters, and drilling depth of grabbing bucket at ebb tide subtracts 2 meter.
Beneficial effects of the present invention：
1. the present invention during explosive is cleared up, grab bucket and carried out at a slow speed into mud and closing speed, avoid explosive because
It is subject to larger shock and explodes；
Before 2. dangerous explosive dress is refuted, first be used as cushion, reduction explosive the built-in part silt of self-propelled hopper is rebasing
Shock to hopper；
3. Grab reach distance is 0.6~0.7 times of grab bucket tonicity, excavating depth on the one hand can be made to reach design will
Ask, on the other hand also ensure that the smooth of the face of dredging；
4. using construction method of the present invention, construction quality improves a lot, and shallow point is seldom, and the ultra-deep side of giving up amount reduces, it is ensured that
The task of cleaning bomb is completed on the premise of safety.
Embodiment
The technical solution in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this area
All other embodiment that art personnel are obtained without making creative work, belongs to the model that the present invention protects
Enclose.
Remote crude oil pipeline project is China in Burma's key strategy project, its crude oil terminal and navigation channel work in Burma's Kyaukpyu port
Journey is even more the most important thing, and 300,000 tons of crude oil Measure Points in Waterway Dredging Area have the suspected detonations such as a large amount of shells left in World War II, bomb
Thing construction soil property is mud and flour sand, and with a large amount of bombs, -22.8 meters of construction requirement projected depth, it is ensured that quality allows to surpass
It is 0.6 meter deep.
Construction ship brief introduction：It is a grab bucket dredger, is built in Japan, it is 60 meters long, it is 20 meters wide, determine by anchor chain
Position, is equipped with two sets of grab buckets, is respectively bucket capacity 18m3Conventional grab bucket and bucket capacity 6m3High intensity grab bucket, 40 meters of maximum dredging depth.
Projected depth：- 22.8 meters, since the original depth of water is all -19 meters or so, from shallow to deep construction in layer, first
Layer：- 21 meters；The second layer：- 22.8 meters.
Ship's fix：Left and right angular deviation is no more than 1 degree, and accommodation deviation or so is no more than 1 meter.
Drilling depth：Grabbed bucket using 18 sides, 6 meters of drilling depth；Grabbed bucket using 6 sides, 5 meters of drilling depth.7 meters of drilling depth of construction at the incoming tide, ebb
When construct 5 meters of drilling depth；When big flood tide arrives, 8 meters of drilling depth at the incoming tide, 4 meters of drilling depth at ebb tide, to ensure construction quality.
Before dangerous explosive dress is refuted, first be used as cushion, reduction explosive pair the built-in part silt of self-propelled hopper is rebasing
The shock of hopper.
Clear up during explosive, grab bucket and be intended to carry out at a slow speed into mud and closing speed：Grab bucket lowering velocity control during into mud
System is in 20m/min；Bucket current control is closed during closure in 2A or so, avoids explosive from exploding because being subject to larger shock.Root
According to actual conditions, speed control is transferred when grabbing bucket into mud bucket current control is closed in 20~30m/min, grab bucket closure in 1~3A.
Heavy bucket requires：Grab bucket after mud, open and support rope brake, sink bucket in He Dou, branch is checked when closing and struggling against to 20%
Rope is held to closure completely of grabbing bucket.According to actual conditions, it can again be checked when closing bucket and being bonded to 15~25% and support that rope is complete to grabbing bucket
Closure.
During excavation quality layer, often dig a row and plowed one time with grab bucket depthkeeping, guarantee flatness, the timing of DGPS swingings of signal,
Grab and dredge with reference to bow label row.
Grab dress should try one's best when refuting reduces the height of drop of explosive, reduces explosive that may be present because hitting hopper
And the construction risk to explode
Explosive dress falls mud point when refuting will be as far as possible away from main ship and hopper driver's cabin, it is ensured that personnel safety.
Reduce strand as far as possible and anchor into disc despatch, anchor chain residue length is kept a close eye on, to prevent dragging of anchor.Rise when casting anchor, because distinguished and admirable big
Anchor once drags not in place, drags sometimes 2 to 3 times, as far as possible once in place, reduces and moves the anchor time and improve productivity effect.
Positioning is not punctual when being transferred for grab bucket, my ship is according to flow rate of water flow, DGPS anchor points and power supply for construction subgraph paper
Determine normal 1-2 meters or so of the grab bucket drilling depth difference of drilling depth contrast of grabbing bucket when flow velocity is very big, therefore drilling depth contrast of constructing is original normal
Drilling depth will add and subtract 1-2 meters.Such as my ship is constructed in basin now, fore face navigation channel Kou Men, drilling depth of constructing at the incoming tide adds 1
Rice, drilling depth of constructing at ebb tide subtract 1 meter；When big flood tide arrives, drilling depth adds 2 meters at the incoming tide, and drilling depth subtracts 2 meter at ebb tide, to ensure
Construction quality.
Grab bucket, which closes to struggle against as far as possible when struggling against, closes tight rear recurrence liter grab bucket, is hit in order to avoid explosive comes off from bucket valve gap from boat
Trigger explosion in hopper deck.As do not closed firmly when closing not tight, the water surface can be promoted to and see whether to catch bomb or other materials,
Also it can again sleep out after bucket is toppled over and be dug again from newly, in case explosive explosion is caused danger.
The plane control of construction：Should be according to construction design drawing in construction, plotting goes out dug region, and calculates each control
Point coordinates, the position of excavation is controlled by DGPS alignment systems.
The control of width：Dig width to be controlled by DGPS alignment systems, to be accurately positioned when row struggles against to grooving sideline every time, with
Anti- leak-stopping digs or backbreaks；When horizontal digging closes on grooving sideline, on grooving sideline several buckets are dug, to ensure to dig sufficient sideline, control more
Good transverse moving speed, prevents the influences such as inertia or wind-force, current that fore is traversing from fore is deflected away from sideline and causing ultra-wide.
It is deep-controlled：Water level must be frequently seen in construction, it is diligent to survey the depth of water, frequently are met by design and is wanted for accommodation, only cutting depth
When asking, dredger can move forward, and dig deep control and generally sounded the depth of the water by stem with console depth indicator to control, grasped
The control of good dredger forward pitch, 0.6~0.7 times of general desirable grab bucket tonicity are used as reach distance.This ship is according to actual warp
Test, 18m3Grab bucket takes 6 meters；6m3Grab bucket takes 5 meters.
Using it is manual close the depthkeeping that struggles against and dredge when, close struggle against during it is noted that the use of " heavy to grab ", i.e., during closing and struggling against,
Loosen support rope in right amount, making grab bucket bucket lip as far as possible, face is smooth to ensure to dredge along in one plane moving.
Must be detected before reach the real depth of water for digging position or this when closing last and grabbing, grab bucket is closed, it is deep to place design
Degree, along the track swing one time of dredging, no shallow point discovery (when depth reaches design requirement), can move forward.
In addition, reducing strand as far as possible anchors into disc despatch, anchor chain residue length is kept a close eye on, to prevent dragging of anchor.Rise when casting anchor, because of wind
Flow big anchor and once drag not in place, drag sometimes 2 to 3 times, it is as far as possible once in place, reduce and move the anchor time and improve productivity effect.
Using above-mentioned construction method, interest rate is 84% when this ship is actual, productivity for 307 cubic metres per hour, engineering
Quality is greatly enhanced, and shallow point is seldom, and the ultra-deep side of giving up amount reduces, it is ensured that appointing for cleaning bomb is completed on the premise of safety
Business.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of Grab excavates the construction method of dangerous explosive, using the grab bucket by two sets of anchor chain positioning, outfit grab buckets
Formula dredger operation, it is characterised in that：Grab bucket after mud, open and support rope brake, sink bucket in He Dou, bucket to be closed is bonded to 15%
Checked when~25% and support rope to closure completely of grabbing bucket；Speed control is transferred when grabbing bucket into mud in 20~30m/min, grab bucket closure
Shi Hedou current controls are in 1~3A.
2. a kind of Grab according to claim 1 excavates the construction method of dangerous explosive, it is characterised in that：It is dangerous quick-fried
Fried thing is used as cushion the built-in part silt of self-propelled hopper is rebasing before dress is refuted, first.
3. a kind of Grab according to claim 1 excavates the construction method of dangerous explosive, it is characterised in that：Make every time
After the completion of industry, Grab reach distance is 0.6~0.7 times of grab bucket tonicity.
4. a kind of Grab according to claim 3 excavates the construction method of dangerous explosive, it is characterised in that：Described two
Set grab bucket is respectively 18m3Grab bucket and 6m3Grab bucket；Use 18m3During grab bucket, after the completion of every subjob, Grab reach distance is 5
~7m, uses 6m3During grab bucket, Grab reach distance is 3~5m.
5. a kind of Grab according to claim 1 excavates the construction method of dangerous explosive, it is characterised in that：In basin
During interior construction fore face navigation channel mouthful door, construction grab bucket drilling depth adds 1 meter at the incoming tide, and construction grab bucket drilling depth subtracts 1 meter at ebb tide；When big
Flood tide comes interim, and drilling depth of grabbing bucket at the incoming tide adds 2 meters, and drilling depth of grabbing bucket at ebb tide subtracts 2 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741061.3A CN104594419B (en) | 2014-12-05 | 2014-12-05 | A kind of Grab excavates the construction method of dangerous explosive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741061.3A CN104594419B (en) | 2014-12-05 | 2014-12-05 | A kind of Grab excavates the construction method of dangerous explosive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104594419A CN104594419A (en) | 2015-05-06 |
| CN104594419B true CN104594419B (en) | 2018-05-15 |
Family
ID=53120446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410741061.3A Active CN104594419B (en) | 2014-12-05 | 2014-12-05 | A kind of Grab excavates the construction method of dangerous explosive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104594419B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4526413A (en) * | 1984-04-09 | 1985-07-02 | Williams Howard G | Remote controlled self-powered excavator apparatus |
| CN2042859U (en) * | 1987-06-22 | 1989-08-16 | 埃斯科公司 | Excavating bucket |
| CN201195852Y (en) * | 2008-05-20 | 2009-02-18 | 扬帆集团有限公司 | Apparatus for removing sullage of platform outside dock basin door |
| FR2967426A1 (en) * | 2010-11-17 | 2012-05-18 | Colas Sa | Deep excavation dipper integrated boom for excavator on track to carry out earthworks, has hydraulic winch and winder/unwinder arranged at rear of line so as to be found outside vision field of operator, in operational position of boom |
| CN103645515A (en) * | 2013-09-13 | 2014-03-19 | 中国人民解放军防化学院 | Method for detecting Japan abandoned chemical weapons in water areas |
| WO2014065040A1 (en) * | 2012-10-26 | 2014-05-01 | 日立建機株式会社 | Multi-stage telescopic arm device and deep-digging excavator comprising multi-stage telescopic arm device |
| CN203809007U (en) * | 2014-03-03 | 2014-09-03 | 浙江海洋学院 | Digging bucket controlling device for submarine mining |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130167410A1 (en) * | 2011-12-31 | 2013-07-04 | Brian Bernard Langdon | Clam-link apparatus and methods |
-
2014
- 2014-12-05 CN CN201410741061.3A patent/CN104594419B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4526413A (en) * | 1984-04-09 | 1985-07-02 | Williams Howard G | Remote controlled self-powered excavator apparatus |
| CN2042859U (en) * | 1987-06-22 | 1989-08-16 | 埃斯科公司 | Excavating bucket |
| CN201195852Y (en) * | 2008-05-20 | 2009-02-18 | 扬帆集团有限公司 | Apparatus for removing sullage of platform outside dock basin door |
| FR2967426A1 (en) * | 2010-11-17 | 2012-05-18 | Colas Sa | Deep excavation dipper integrated boom for excavator on track to carry out earthworks, has hydraulic winch and winder/unwinder arranged at rear of line so as to be found outside vision field of operator, in operational position of boom |
| WO2014065040A1 (en) * | 2012-10-26 | 2014-05-01 | 日立建機株式会社 | Multi-stage telescopic arm device and deep-digging excavator comprising multi-stage telescopic arm device |
| CN103645515A (en) * | 2013-09-13 | 2014-03-19 | 中国人民解放军防化学院 | Method for detecting Japan abandoned chemical weapons in water areas |
| CN203809007U (en) * | 2014-03-03 | 2014-09-03 | 浙江海洋学院 | Digging bucket controlling device for submarine mining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104594419A (en) | 2015-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104846787B (en) | Construction method for carrying out sand-blowing sea-filling land-making in shallow sea area by using cutter suction dredger | |
| CN102809328B (en) | Underwater rock blasting method under precise control of digital electronic detonators | |
| JP2011007038A (en) | Construction control method by three-dimensional sonar and construction control device for the same | |
| CN106193161B (en) | A kind of strand suction super low coverage ship dredging construction method in boat landing forward position | |
| US20160237643A1 (en) | Dredger actuated from land | |
| CN105421286A (en) | Combined rock excavation construction method using backhoe dredger and drill ship | |
| CN108570990A (en) | Shallow water ocean bottom cable stone accurately fills device and method | |
| Garnett | Marine placer diamonds, with particular reference to Southern Africa | |
| Paulin | Arctic offshore pipeline design and installation challenges | |
| CN111893944A (en) | Environment-friendly submarine reef cleaning construction process | |
| CN104594419B (en) | A kind of Grab excavates the construction method of dangerous explosive | |
| JP2010112021A (en) | Device and method for recovering dangerous article in water bottom | |
| Ishiguro et al. | Development of mining element engineering test machine for operating in seafloor hydrothermal deposits | |
| CN102071937B (en) | Multi-metal sulfide mining shovel | |
| JP2007070988A (en) | Pump-dredging method | |
| CN209412888U (en) | A kind of riverbed sludge strand suction ship | |
| CN211503858U (en) | Underwater exposed blasting charging structure | |
| Paulin et al. | Trenching considerations for Arctic pipelines | |
| Paulin et al. | Trenching of pipelines for protection in ice environments | |
| Allsop et al. | Alderney Breakwater: The quest for a final solution | |
| Balamadeswaran et al. | Safe blast design for efficient and sustainable underwater excavation: art meets science! | |
| Paulin et al. | Trenching of Pipelines for Protection in Ice Environments | |
| JP2683820B2 (en) | Subsea tunnel construction method and construction equipment | |
| Garnett | Marine placer gold, with particular reference to nome | |
| Prelini | Dredges and dredging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee after: Hailu (Yantai) Environmental Dredging Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee before: CCCC TDC ENVIRONMENTAL PROTECTION DREDGING Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |
|
| CP03 | Change of name, title or address |