CN106869216A - Hydraulic pressure is twisted inhales the construction technology that ship exploits weak rock - Google Patents
Hydraulic pressure is twisted inhales the construction technology that ship exploits weak rock Download PDFInfo
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- CN106869216A CN106869216A CN201710099891.4A CN201710099891A CN106869216A CN 106869216 A CN106869216 A CN 106869216A CN 201710099891 A CN201710099891 A CN 201710099891A CN 106869216 A CN106869216 A CN 106869216A
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- rock
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- 238000010276 construction Methods 0.000 title claims abstract description 67
- 239000011435 rock Substances 0.000 title claims abstract description 51
- 238000005516 engineering process Methods 0.000 title claims abstract description 24
- 238000009412 basement excavation Methods 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims description 22
- 238000013461 design Methods 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 7
- 238000013519 translation Methods 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 2
- 241000270728 Alligator Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- E02F3/8833—Floating installations
- E02F3/885—Floating installations self propelled, e.g. ship
-
- 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
-
- 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
- E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction pipes
-
- 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
- E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
Abstract
Hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, comprises the following steps：S1：Preparation of construction, it is determined that excavating region, will twist suction ship and move in excavation region, and bridge is transferred, and according to the thickness of lithosphere, lithosphere thickness requirement is the rock of 0.8~1.0m, according to lithosphere 1：5 slope ratio determines digging point；S2：Region construction is excavated, individual layer construction is first carried out, proceeding by gradually deep section from digging point using excavating gear constructs；Residual layer construction is carried out again；S3：Repeat step S2, into next excavation region construction working.Efficiency of construction of the present invention is high, low cost.
Description
Technical field
The present invention relates to Dredging Technology field, more particularly to a kind of hydraulic pressure is twisted inhales the construction that ship exploits weak rock
Technique.
Background technology
Hydraulic pressure twist inhale ship have work continuously, production efficiency is high, the low advantage of construction cost, is to dredge to use visual plant,
But a definite limitation is but subject to for rock operating mode, it is at present, general to use cofferdam dry type digging mode for rock operating mode, i.e.,
To be excavated using land machinery after excavating region seawater and draining using cofferdam, this kind of mode efficiency of construction is low, produces
Expense cost it is high, but, for weak rock, if set using rational excavation mode and corresponding rational excavation
Standby, hydraulic pressure twists the ability that ship still possesses excavation weak rock of inhaling.
The content of the invention
The technical problem to be solved in the present invention is to provide that a kind of efficiency of construction is high, hydraulic pressure of low cost twists that to inhale ship exploitation soft
The construction technology of rock.
A kind of hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, and the hydraulic pressure strand inhales ship includes hull, bridge
Beam, excavating gear and chassis, comprise the following steps：
S1：Preparation of construction, it includes：It is determined that excavating region, suction ship will be twisted and moved in excavation region, and bridge will be transferred,
According to the thickness of lithosphere, lithosphere thickness requirement is the rock of 0.8~1.0m, according to lithosphere 1：5 slope ratio determines digging
Point；
S2：Region construction is excavated, it includes：
S201：Individual layer is constructed, and proceeding by gradually deep section from digging point using excavating gear constructs, and is twisted in the excavating gear
Knife according to 0.5 meter of every knife drilling depth, longitudinally construct, until excavating to design head, Ran Houzai by the gradually deep ratio that bridge transfers 0.1 meter
According to every knife drilling depth, 0.5 meter carries out horizontal construction, and the rubble after excavation is delivered into designated area；
S202：Residual layer is constructed, and after the completion of individual layer construction, hydraulic pressure twists suction ship and moves to digging point by chassis, using excavation
Device is constructed to residual layer, according to every knife drilling depth 1.5m, bridge keep horizontal translation constructed, and by excavation after it is broken
Stone is delivered to designated area；
S3：Repeat step S2, into next excavation region construction working.
Hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, and in wherein step S1, the hydraulic pressure twists suction ship and connects
Anchor ship is connected to, hydraulic pressure described in the anchor ship traction is twisted to be inhaled in ship to excavation region.
Hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, in wherein step S1, is provided with the bridge
Sensor and GPS positioning device.
Hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, and in wherein step S2, the reamer uses positive knife
Drilling depth or anti-knife drilling depth any one drilling depth mode.
Hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, in wherein step S2, the horizontal stroke of the excavating gear
It is 5-6 ms/min to move speed, and traversing pressure is 80-110 kilograms, and the reamer rotating speed is 23 revs/min, the reamer pressure
It is 90-160 kilograms.
Hydraulic pressure of the present invention twists the construction technology for inhaling ship exploitation weak rock, wherein being welded with the digging anti-stone of rock on the reamer
Net.
Hydraulic pressure of the present invention is twisted inhales the construction technology that ship exploits weak rock, wherein the cutter tooth of the reamer is using digging rock point
Tooth, the cutter tooth is arranged on toothholder.
Compared with prior art, advantage for present invention and have the beneficial effect that：The present invention twists suction ship and opens using hydraulic pressure
Adopt during weak rock, constructed for the rock that lithosphere thickness is 0.8~1.0m, and according to lithosphere 1:5 slope
Constructed than place, constructed using individual layer, then swept the construction method of residual layer, lithosphere is carried out into gradually deep section, successively smashed, carried
The convenience of construction is supplied, while also reducing reamer wear rate in work progress, it is ensured that efficiency of construction.
The construction technology for twisting suction ship exploitation weak rock to hydraulic pressure of the invention below in conjunction with the accompanying drawings is described further.
Brief description of the drawings
Fig. 1 is the workflow diagram that hydraulic pressure of the present invention twists the construction technology for inhaling ship exploitation weak rock；
Fig. 2 is that hydraulic pressure twists the structure chart for inhaling ship during hydraulic pressure of the present invention twists the construction technology for inhaling ship exploitation weak rock；
Wherein：1st, hull；2nd, guide pile；3rd, mud delivery pipeline is inhaled；4th, chassis；5th, hanging apparatus；6th, bridge；7th, reamer.
Specific embodiment
As shown in Figure 1-2, a kind of hydraulic pressure of the invention is twisted and inhales the construction technology that ship exploits weak rock, and hydraulic pressure twists suction ship to be included
Hull 1, bridge 6, excavating gear and chassis 4, bridge 6, excavating gear and chassis 4 are respectively positioned on hull 1, at the stem of hull 1
Hanging apparatus 5 are provided with, hanging apparatus 5 are used to lift by crane bridge 6, realize the decentralization work to bridge 6, are provided with the ship stern of hull 1
Guide pile 2, make hydraulic pressure twist inhale ship be fixed in working region, excavating gear be arranged on bridge 6 on, excavating gear include reamer 7,
Dredge pump, suction mud delivery pipeline 3, reamer 7 are driven by reamer motor, construction area are constructed, passed through in the presence of dredge pump
Mud delivery pipeline 3 is inhaled by the product dispatch after excavation to designated area,
Comprise the following steps：
S1：Preparation of construction, it includes：It is determined that excavating region, hydraulic pressure twists suction ship and is connected with anchor ship, and the hydraulic pressure of different model is twisted
Inhale ship and be configured with different anchor ships, anchor ship traction hydraulic pressure is twisted to be inhaled in ship to excavation region, and bridge 6 is transferred, and is installed on bridge 6
There are sensor and GPS positioning device, sensor is used to obtain in real time the decentralization depth of bridge 6, according to the thickness of lithosphere, rock
Layer thickness requirement is the rock of 0.8~1.0m, according to lithosphere 1：5 slope ratio simultaneously determines digging point using GPS positioning device；
S2：Region construction is excavated, it includes：
S201：Individual layer is constructed, and proceeding by gradually deep section from digging point using excavating gear is constructed, and reamer 7 is entered using positive knife
Chi or anti-knife drilling depth any one drilling depth mode, according to 0.5 meter of every knife drilling depth, bridge 6 transfers 0.1 meter of gradually deep ratio to reamer 7
Longitudinal direction construction, until excavate to design head, then according still further to every knife drilling depth 0.5 meter carry out horizontal construction, and by after excavation
Rubble is delivered to designated area by inhaling mud delivery pipeline 3, if reamer drilling depth reaches 0.7~0.8 meter, obvious strand easily occurs
The stall phenomenon of knife 7, if being less than 0.5 meter, the digging efficiency of reamer 7 will be reduced, therefore, reamer 7 is from 0.5 meter per knife drilling depth
The optimum state of the operation of reamer 7；
In work progress, the transverse moving speed of excavating gear is 5-6 ms/min, traversing Stress control 80-110 kilograms it
Between, speed skate phenomenon is prevented, reamer rotating speed is 23 revs/min, and reamer pressure is 90-160 kilograms；
S202：Residual layer is constructed, and after the completion of individual layer construction, hydraulic pressure twists suction ship and moves to digging point by chassis 4, using excavation
Device is constructed to residual layer, reamer 7 using positive knife drilling depth or anti-knife drilling depth any one drilling depth mode, according to every knife drilling depth
1.5m, bridge 6 keeps horizontal translation to be constructed, and the rubble after excavation is delivered into designated area, in work progress, excavates
The transverse moving speed of device can suitably accelerate most 7-8 ms/min, and traversing pressure is 80-110 kilograms, and reamer rotating speed is 23 revs/min
Clock, reamer pressure is 90-160 kilograms；
S3：Repeat step S2, into next excavation region construction working.
Based on above-mentioned construction procedure, 13 tons of 7 net weight of reamer in the present invention, six arms, per ten toothholders of arm, the cutter tooth of reamer 7
Using rock pointed tooth is dug, cutter tooth is arranged on toothholder, is fixed by alligator between cutter tooth and toothholder, and cutter tooth is individual with the consumption of alligator
Number ratio is 20:1, in order to strengthen the service life of reamer 7, prevent stone from blocking dredge pump, digging rock is welded with reamer 7 and uses anti-
Stone net；
Due to weak rock compare it is big to the wear extent inside pipeline for soil, therefore, inhaling in mud delivery pipeline 3
Portion is welded with the segmentation round steel of a diameter of 30mm, reduces the abrasion loss for inhaling mud delivery pipeline 3.
It is the inspection in work progress during construction：
First, before construction：Big due to digging rock difficulty of construction, risk is high, therefore reply excavating gear and corresponding construction set
It is standby to be checked comprehensively, it is ensured that in good condition；
2nd, in work progress：
(1) during decentralization bridge 6, for hanging apparatus 5, the fastness of all parts of hanging apparatus 5 is mainly checked,
Ensure being smoothed out for decentralization work, for example, need at regular intervals between the rotating disk and base of crane in hanging apparatus 5
The elasticated of fixing bolt, the fastness of weld is checked between base and hull 1, and construction period must consolidate crane
Envelope, mitigates the vibrations of crane upper boom portion；
Lifting pulley for rising or falling bridge 6 needs regular check, it is ensured that the safety of bridge 6.
(2) dig during rock, the rate of wear of reamer tooth is quickly, it is necessary at regular intervals to reamer 7 during due to digging rock
Checked, the time that reamer 7 is checked does not exceed two hours, the cutter tooth to serious wear position carries out continuous, entirety more
Change, it is to avoid be individually replaced, to ensure the mining ability of reamer 7, the great circle of reamer 7, tooth are checked furthermore with the time of replacement tooth
The abrasion feelings or damaged condition of seat, centrum and anti-stone net, pinpoint the problems and repair in time；
Due to digging the strenuous vibration of rock, cause the working environment of reamer motor extremely severe, especially to motor base and
Three inspections of pivot pin of universal joint, these positions need in the lump check in replacement tooth.
The present invention is twisted during suction ship exploitation weak rock using hydraulic pressure, for the rock that lithosphere thickness is 0.8~1.0m
Stone is constructed, and according to lithosphere 1:5 slope is constructed than place, is constructed using individual layer, then sweeps the construction method of residual layer,
Lithosphere is carried out into gradually deep section, is successively smashed, there is provided the convenience of construction, while also reducing reamer 7 in work progress
Wear rate, it is ensured that efficiency of construction, from the structure of specific reamer 7, reduces the wear rate of reamer 7；
Although hydraulic pressure twists suction ship to be unsuitable for carrying out digging rock operation in design, as long as if selecting rational reamer 7
And construction method, significantly, the cofferdam type in the prior art that compares digs for rock mode its construction effect, and construction cost is low, raw
Produce efficiency high.
Now with specific embodiment, the present invention will be described in detail,
Embodiment 1：
Qatar Al Ruwais ports are located at the about 120Km of Doha the north, and the soft rockmass in Qatar building site includes sedimentary rock,
The digging rock construction pipeline length of section is 2200 meters in navigation channel, and dredge pump is submersible pump and No. 2 pumps, and outer section is 3300 meters, three dredge pumps
Series connection construction, -5.0 meters of this engineering design depth of water, design is dug wide 100 meters, it is allowed to 0.25 meter of ultra-deep, it is allowed to 2 meters of ultra-wide, it is desirable to sweep
Without shallow point, fathogram is accurate to centimetre for sea measurement.
Specific construction step is identical with above-mentioned steps, wherein,
During bridge 6 is transferred, in order to ensure that Passage Design Soundings can be reached, ultra-deep can be effectively controlled again, together
When consider influence of the tide to grooving quality, it is determined that 5.0 meters when lower bridge depth flood tide and slack tide, 4.9 meters during ebb tide, according to tidewater
Fluctuation situation, adjustment bridge 6 decentralization depth in time, during the lower bridge depth of adjustment, tidewater change must not exceed 5 centimeters.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to model of the invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to technical side of the invention
Various modifications and improvement that case is made, all should fall into the protection domain of claims of the present invention determination.
Claims (7)
1. a kind of hydraulic pressure is twisted and inhales the construction technology that ship exploits weak rock, and the hydraulic pressure twists suction ship to be included hull, bridge, excavate dress
Put and chassis, it is characterised in that：Comprise the following steps：
S1：Preparation of construction, it includes：It is determined that excavating region, suction ship will be twisted and moved in excavation region, and bridge transferred, foundation
The thickness of lithosphere, lithosphere thickness requirement is the rock of 0.8~1.0m, according to lithosphere 1：5 slope ratio determines digging point；
S2：Region construction is excavated, it includes：
S201：Individual layer is constructed, and proceeding by gradually deep section from digging point using excavating gear is constructed, and reamer is pressed in the excavating gear
According to 0.5 meter of every knife drilling depth, the gradually deep ratio that bridge transfers 0.1 meter is longitudinally constructed, until excavate to design head, then according still further to
Per knife drilling depth, 0.5 meter carries out horizontal construction, and the rubble after excavation is delivered into designated area；
S202：Residual layer is constructed, and after the completion of individual layer construction, hydraulic pressure twists suction ship and moves to digging point by chassis, using excavating gear
Residual layer is constructed, according to every knife drilling depth 1.5m, bridge keeps horizontal translation to be constructed, and the rubble after excavation is defeated
Deliver to designated area；
S3：Repeat step S2, into next excavation region construction working.
2. hydraulic pressure according to claim 1 is twisted and inhales the construction technology that ship exploits weak rock, it is characterised in that：Step S1
In, the hydraulic pressure twists suction ship and is connected with anchor ship, and hydraulic pressure described in the anchor ship traction twists suction ship and extremely excavates in region.
3. hydraulic pressure according to claim 1 is twisted and inhales the construction technology that ship exploits weak rock, it is characterised in that：Step S1
In, sensor and GPS positioning device are installed on the bridge.
4. hydraulic pressure according to claim 1 is twisted and inhales the construction technology that ship exploits weak rock, it is characterised in that：Step S2
In, the reamer is using positive knife drilling depth or anti-knife drilling depth any one drilling depth mode.
5. hydraulic pressure according to claim 4 is twisted and inhales the construction technology that ship exploits weak rock, it is characterised in that：Step S2
In, the transverse moving speed of the excavating gear is 5-6 ms/min, and traversing pressure is 80-110 kilograms, and the reamer rotating speed is 23
Rev/min, the reamer pressure is 90-160 kilograms.
6. hydraulic pressure according to claim 1 is twisted and inhales the construction technology that ship exploits weak rock, it is characterised in that：The reamer
On be welded with digging the anti-stone net of rock.
7. the hydraulic pressure according to claim 1 or 6 is twisted and inhales the construction technology that ship exploits weak rock, it is characterised in that：It is described
The cutter tooth of reamer is arranged on toothholder using rock pointed tooth, the cutter tooth is dug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099891.4A CN106869216B (en) | 2017-02-23 | 2017-02-23 | Construction process for exploiting soft rock by hydraulic cutter-suction dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099891.4A CN106869216B (en) | 2017-02-23 | 2017-02-23 | Construction process for exploiting soft rock by hydraulic cutter-suction dredger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106869216A true CN106869216A (en) | 2017-06-20 |
| CN106869216B CN106869216B (en) | 2020-04-10 |
Family
ID=59168472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710099891.4A Active CN106869216B (en) | 2017-02-23 | 2017-02-23 | Construction process for exploiting soft rock by hydraulic cutter-suction dredger |
Country Status (1)
| Country | Link |
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| CN (1) | CN106869216B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403401A (en) * | 2018-09-25 | 2019-03-01 | 中交天航滨海环保浚航工程有限公司 | A method of it twists and inhales ship excavation cobble sand |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3867772A (en) * | 1972-01-28 | 1975-02-25 | Leward N Smith | Method of excavating to form or enlarge a waterway |
| CN102162264A (en) * | 2011-02-28 | 2011-08-24 | 中交天津航道局有限公司 | A rock digging method for a reamer of a cutter suction boat in coral reefs and rock constructions |
| CN103556665A (en) * | 2013-11-20 | 2014-02-05 | 中交天津航道局有限公司 | Method for performing dredging construction on hard rocks by using cutter suction dredger on basis of rock softening characteristics |
| DE202016103025U1 (en) * | 2016-02-04 | 2016-06-28 | Ralf Seifert | Pontoon drive and pontoon cruise ship |
-
2017
- 2017-02-23 CN CN201710099891.4A patent/CN106869216B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3867772A (en) * | 1972-01-28 | 1975-02-25 | Leward N Smith | Method of excavating to form or enlarge a waterway |
| CN102162264A (en) * | 2011-02-28 | 2011-08-24 | 中交天津航道局有限公司 | A rock digging method for a reamer of a cutter suction boat in coral reefs and rock constructions |
| CN103556665A (en) * | 2013-11-20 | 2014-02-05 | 中交天津航道局有限公司 | Method for performing dredging construction on hard rocks by using cutter suction dredger on basis of rock softening characteristics |
| DE202016103025U1 (en) * | 2016-02-04 | 2016-06-28 | Ralf Seifert | Pontoon drive and pontoon cruise ship |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403401A (en) * | 2018-09-25 | 2019-03-01 | 中交天航滨海环保浚航工程有限公司 | A method of it twists and inhales ship excavation cobble sand |
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| Publication number | Publication date |
|---|---|
| CN106869216B (en) | 2020-04-10 |
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Address after: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee after: Hailu (Yantai) Environmental Dredging Co.,Ltd. Country or region after: China Address before: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee before: CCCC TDC ENVIRONMENTAL PROTECTION DREDGING Co.,Ltd. Country or region before: China |