CN103485356B - Overwater laying frame and method for filling sand pockets with same - Google Patents
Overwater laying frame and method for filling sand pockets with same Download PDFInfo
- Publication number
- CN103485356B CN103485356B CN201310460216.1A CN201310460216A CN103485356B CN 103485356 B CN103485356 B CN 103485356B CN 201310460216 A CN201310460216 A CN 201310460216A CN 103485356 B CN103485356 B CN 103485356B
- Authority
- CN
- China
- Prior art keywords
- frame
- filling
- filling bag
- sand
- waterborne
- 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
Landscapes
- Revetment (AREA)
Abstract
The invention discloses an overwater laying frame and a method for filling sand pockets with the overwater laying frame. The overwater laying frame is used for the field of hydraulic structures and comprises a main frame capable of floating on the water surface. When the overwater laying frame is utilized for filling the sand pockets to form a cofferdam, the filling pockets are spread and are fixed to a stand rod at the inner edge of the main frame, sand is filled into the filling pockets to ensure that the filling pockets sink into the water bottom along the stand rod, and therefore the filling pockets are continuously stacked to form the cofferdam. Being adopted to form the cofferdam, the overwater laying frame and the method for filling the sand pockets with the overwater laying frame prevent laying ships used in traditional methods from being used, save cost, and provide a new method for forming cofferdams under the working conditions in shallow water.
Description
Technical field
The present invention is used for field of hydraulic architecture, particularly relates to a kind ofly waterbornely arranging frame and utilizing this frame of arranging waterborne to fill the cofferdam method of sand pocket.
Background technology
Cofferdam refers in hydraulic engineering construction, for building permanent water conservancy projects, and the provisional space enclosing structure of building.Its effect be prevent water and soil from entering building build position so that at cofferdam internal drainage, excavation pit, builds building.Generally be mainly used in hydraulic architecture, except the part as formal building, cofferdam is generally removed after being finished.
Cofferdam can be divided into polytype according to the difference of construction material, and wherein the cofferdam form of sand filling bag is comparatively applied wider in hydraulic architecture.Existing sand filling bag cofferdam technique adopts the mode using Working Ships to carry out constructing to come shaping mostly, but the use of Working Ships exists shortcomings.First, due to Working Ships negligible amounts, make Working Ships dispatch expense and lease expenses is high; Secondly, the requirement of Working Ships to tide water level is higher, only meeting after the depth of water is the tidal level of about 4 meters, constructing and could carry out smoothly, and this is a bottleneck restriction concerning the more shallow engineering of tidal level.
Summary of the invention
For solving the problem, the invention provides and a kind ofly meet that the shaping needs in the shallow cofferdam of the depth of water are cost-saving again waterbornely to be arranged frame and utilize this waterbornely to arrange the cofferdam method that sand pocket filled by frame.
The technical solution adopted for the present invention to solve the technical problems is: a kind of waterbornely arranges frame, comprises a floatability on the water surface can strut the main frame of filling bag, along in main frame along or outside be provided with some montants inserted in the water body of below.
Be further used as the improvement of technical solution of the present invention, be provided with some main frames that makes along main frame and swim in flotation gear on the water surface, main frame is formed by connecting in turn by some unit framework first places, and unit framework comprises two parallel girders of setting and the web member of some connections two girders.
Be further used as the improvement of technical solution of the present invention, main frame is rectangular, and each unit framework forms rectangular frame by two girders and two web members being positioned at two girder two ends, and each unit framework is equipped with connector outside four angle points of rectangular frame.
Be further used as the improvement of technical solution of the present invention, connector is the corner angle be fixedly connected with rectangular frame, and each corner angle is equipped with some link bolt hole.
Be further used as the improvement of technical solution of the present invention, girder is the steel pipe of Φ 80mm, and web member is the steel pipe of Φ 20mm.
Present invention also offers and a kind ofly utilize above-mentioned frame of arranging waterborne to fill the cofferdam method of sand pocket, it is characterized in that, comprise the following steps:
A. preparation of construction: make and waterbornely arrange frame and filling bag;
B. frame of arranging waterborne is located: station keeping ship casts anchor in place, frame of arranging waterborne is fixed on location hull, more accurately locates;
C. lay filling bag: filling bag arranged in frame on the water and launch, then by each montant through each filling bag edge, make filling bag keep deployed condition and be fixed in main frame;
D. sand ship is in place;
E. filling bag filling, sinking: be filled in filling bag by the sand material on sand ship, filling bag sinks under water along montant under the effect of sand material;
F. continuous-flow type construction: pack up and waterbornely arrange frame, running fix ship is to next construction location, and repetition step B ~ E, until the stacking formation cofferdam of filling bag.
Be further used as the improvement of technical solution of the present invention, filling bag comprises bag, some by the emersed cuff of bag and some handles being located at filling bag edge.
Be further used as the improvement of technical solution of the present invention, after in step B, station keeping ship enters construction location, head and the tail all descend crossed anchor, commander's windlass hand control strand anchor, preliminary running fix ship makes frame sideline of arranging waterborne near filling bag embankment sideline, then utilize RTK to carry out line setting-out accurately to locate, by slowly repeatedly regulating, determine exact position.
Be further used as the improvement of technical solution of the present invention, in step C, arrange outside frame to waterborne in the top of montant, and montant bottom is inserted in water-bed mud face.
Be further used as the improvement of technical solution of the present invention, after step D medium sand ship is in place, be fixed on described station keeping ship.
Beneficial effect of the present invention: the invention provides and a kind of waterbornely arrange frame, comprise the main frame of a floatability on the water surface, utilize this waterborne arrange frame carry out filling sand pocket formed cofferdam time, filling bag is launched and is fixed on the montant on edge in main frame, by making filling bag sink under water along montant to back-up sand material in filling bag, thus pass through the continuous stacking formation cofferdam of filling bag, of the present invention by utilizing waterbornely arrange frame and utilize this frame of arranging waterborne to fill cofferdam method of sand pocket to carry out cofferdam shaping, avoid the use of Working Ships in conventional method, thus it is cost-saving, also provide new approaches for cofferdam is shaping under the more shallow operating mode of the depth of water simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
To be that the present invention is waterborne arrange frame example structure top view to Fig. 1;
To be that the present invention is waterborne arrange frame example structure front view to Fig. 2;
To be that the present invention is waterborne arrange frame embodiment unit frame structure schematic diagram to Fig. 3;
To be that the present invention is waterborne arrange syndeton schematic diagram between frame embodiment unit framework to Fig. 4;
Fig. 5 is that the present invention's frame embodiment of arranging waterborne lays and fills sand pocket structural representation;
Fig. 6 is that the present invention utilizes the cofferdam method construction front view arranging frame filling sand pocket waterborne;
Fig. 7 is that the present invention utilizes the process chart arranging the cofferdam method of frame filling sand pocket waterborne;
Fig. 8 is that the present invention utilizes the cofferdam method construction front view arranging frame filling sand pocket waterborne;
Fig. 9 is the cofferdam schematic cross-section obtained after construction.
Detailed description of the invention
With reference to Fig. 1 ~ Fig. 4, the invention provides and a kind of waterbornely arrange frame, comprising a floatability on the water surface can strut the main frame 2 of filling bag 1, along in main frame 2 along or outside be provided with some montants 3 inserted in the water body of below, the position of montant 3 can adjust as required, disassembles conveniently.
Utilize this waterborne arrange frame carry out filling sand pocket formed cofferdam time, filling bag 1 is launched and is fixed on the montant 3 on edge in main frame 2, by making filling bag sink under water along montant 3 to back-up sand material in filling bag 1, thus pass through the continuous stacking formation cofferdam of filling bag 1, of the present invention by utilizing waterbornely arrange frame to carry out cofferdam shaping, avoid the use of Working Ships in conventional method, thus cost-saving, also provide new approaches for cofferdam is shaping under the more shallow operating mode of the depth of water simultaneously.
As the preferred embodiment of the present invention, be provided with some main frames 2 that makes along main frame 2 and swim in flotation gear 21 on the water surface, flotation gear 21 is preferably the floating cylinder of lightweight, main frame 2 is formed by connecting in turn by some unit framework 4 first places, and unit framework 4 comprises two parallel girders 41 of setting and the web member 42 of some connections two girders 41.
The length of unit framework 4 can be selected multiple according to specific needs, the unit framework 4 adopting length not wait carries out first place and connects to be formed main frame 2 in turn, object is for the ease of disassembling, the filling bag 1 being adapted to different size is constructed, while meeting construction intensity needs, can reequip arranging frame easily again, be convenient to the expansion better controlling filling bag 1, location and sinking, the vibrational power flow of the web member 42 of two parallel girders 41 and some connections two girders 41, make whole main frame 2 can keep basicly stable under the active forces such as the water wave of complexity, floating cylinder then ensures that this frame of arranging waterborne can be bubbled through the water column.
As the preferred embodiment of the present invention, main frame 2 is rectangular, and each unit framework 4 forms rectangular frame by two girders 41 and two web members 42 being positioned at two girder 41 two ends, and each unit framework 4 is equipped with connector outside four angle points of rectangular frame.
Connector is the corner angle 43 be fixedly connected with rectangular frame, and each corner angle 43 is equipped with some link bolt hole 44.
Corner angle 43 welds with four angle points of rectangular frame, increases the contact area between each unit framework 4, increases active force, high strength shearing bolt is adopted to be connected by two unit frameworks 4 through link bolt hole 44, form bolt contact system, and strengthen protection with iron chains, increase safety guarantee performance.
As the preferred embodiment of the present invention, girder 41 is the steel pipe of Φ 80mm, and web member 42 is the steel pipe of Φ 20mm.
Concrete: to adopt Φ 80mm steel pipe to make girder 41, Φ 20mm steel pipe and make web member 42 and connect girder 41, the thickness of certain girder 41 and web member 42 and material selection, can adjust according to the effect size of wave, current, allly meet rigidity condition requirement.For meeting easy-to-dismount needs, Φ 80mm steel pipe is made three kinds of different length, it is long to be respectively 1m, 2m and 3m.
Present invention also offers with reference to Fig. 5 ~ Fig. 9 a kind ofly utilizes above-mentioned frame of arranging waterborne to fill the cofferdam method of sand pocket, comprises the following steps:
A. preparation of construction: make and waterbornely arrange frame and filling bag 1;
B. frame of arranging waterborne is located: station keeping ship casts anchor in place, described frame of arranging waterborne is fixed on station keeping ship 5 body, more accurately locates;
C. filling bag 1 is laid: filling bag 1 arranged in frame on the water and launch, during expansion, direction is preferably along water (flow) direction, to save manpower, raise the efficiency, then by each montant 3 through each filling bag 1 edge, make filling bag 1 keep deployed condition and be fixed in main frame 2;
D. sand ship 6 is in place;
E. filling bag 1 filling, sinking: be filled in filling bag 1 by the sand material on sand ship 6, filling bag 1 sinks under water along montant 3 under the effect of sand material;
F. continuous-flow type construction: pack up and waterbornely arrange frame, running fix ship 5, to next construction location, repeats step B ~ E, until the stacking formation cofferdam of filling bag 1.
Shaping by utilizing said method to carry out cofferdam, avoid the use of Working Ships in conventional method, thus cost-saving, also provide new approaches for cofferdam is shaping under the more shallow operating mode of the depth of water simultaneously, instant invention overcomes the more severe difficult problem of execution conditions.The selection of new technology, serves vital effect to the saving of construction cost.The Successful utilization of this technique shows, in low water stage condition, in the coastal waters construction that wave condition is general, has broad application prospects and market prospects.
As the preferred embodiment of the present invention, the filling bag 1 of making comprises bag, some by the emersed cuff of bag 11 and some handles being located at filling bag 1 edge.
Concrete: according to design drawing requirement, that determines filling bag 1 size and filling bag 1 geotextiles used sews up pattern.Filling bag 1 can be made into tubular, and size adds with the size of the different elevations of rib body section moves back a grade size.Change with elevation in bag fill cross-sectional direction size, and longitudinal section size is beneficial to making and easy construction is advisable, generally at 20 ~ 50m.The layout of the cuff 11 of every root filling bag 1 is blossom type, is convenient to uniform pack sand, and the quantity of cuff 11 is determined according to filling bag 1 size, and general every 5m ~ 10m establishes one, and the length of cuff 11 is advisable with the 20cm ~ 30cm that can emerge.Use waterborne arrange frame construction time, for filling bag 1 makes handle, make it sink along montant 3 for fixing filling bag 1, the accuracy of effective guarantee construction location, handle is made according to stressed needs, generally makes one every 1 ~ 3m, convenient fixing filling bag 1.Be sewed with two kinds of methods, fourth seam and overseam, can determine according to design drawing.Also to make the different Special-shaped bag of length, lay for adjacent two layers sand pocket end, avoid straight joint occurs.
As the preferred embodiment of the present invention, after in step B, station keeping ship 5 enters construction location, head and the tail all descend crossed anchor, commander's windlass hand control strand anchor, preliminary running fix ship 5 makes frame sideline of arranging waterborne near filling bag 1 fill sideline, then utilize RTK to carry out line setting-out accurately to locate, by slowly repeatedly regulating, determine exact position.
Station keeping ship 5 with the use of the construction control being conducive to engineering, object is exactly in order to stable strand anchor, overcome wind wave action, be convenient for measuring location, utilize the hoist engine on station keeping ship 5 to sprawl filling bag 1 simultaneously, mechanical execution, save manpower, in addition, select lower crossed anchor mode, reducing anchorage desired zone scope, also preventing from facilitating other ship causing damage to the filling bag 1 of filling while operation.
As the preferred embodiment of the present invention, in step C, arrange outside frame to waterborne in the top of montant 3, and to facilitate filling bag 1 to glide along montant 3, montant 3 bottom is inserted in water-bed mud face, thus can bear the pulling force of filling bag 1 and can not be shifted.
As the preferred embodiment of the present invention, after step D medium sand ship 6 is in place, be fixed on station keeping ship 5.
As the preferred embodiment of the present invention, in step e during filling bag 1 filling, first selected 4 near filling bag 1 bag of angle cuff 11 and 4 filling bag 1 cuff 11 compared with center, selected cuff 11 is socketed firmly with the sand delivering pipeline of sand ship 6, carry out filling construction, first open the sediment transport pipe control valve of bag Angle Position, after bag 1 position to be filled is fixed substantially, then the sediment transport pipe control valve of open fill bag 1 center.Keep other cuff 11 exit unobstructed during filling, drainage exhaust can be carried out smoothly.Meanwhile, note often adjustment sediment transport pipe sand export direction, prevent bag to be shifted because of unbalance stress in stowing operation distortion, filling reach a certain amount of after, bag position is basicly stable, and adjust each residue cuff position and continue filling, filling bag 1 filling thickness general control is at 40cm ~ 50cm.Back-up sand amount substantially reach idealized after, carry out the Thickness sensitivity of filling bag 1, if do not reach requirement, then continue to select the cuff 11 of relevant position to carry out filling.Until reach idealized thickness.
As the preferred embodiment of the present invention, in step e, F, after sand ship 6 makes filling bag 1 stable to back-up sand material in filling bag 1, can by waterbornely arranging frame, sand ship 6 is separated with station keeping ship 5, and station keeping ship 5 is moved to next construction location in advance.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (5)
1. utilize the cofferdam method arranging frame filling sand pocket waterborne, it is characterized in that, comprise the following steps:
A. preparation of construction: make and waterbornely arrange frame and filling bag;
B. frame of arranging waterborne is located: station keeping ship casts anchor in place, described frame of arranging waterborne is fixed on location hull, more accurately locates;
C. lay filling bag: described filling bag arranged in frame on the water and launch, then by each montant through each filling bag edge, make filling bag keep deployed condition and be fixed in main frame;
D. sand ship is in place;
E. filling bag filling, sinking: the sand material on described sand ship is filled in filling bag, described filling bag sinks under water along described montant under the effect of sand material;
F. continuous-flow type construction: pack up and describedly waterbornely arrange frame, mobile described station keeping ship is to next construction location, and repetition step B ~ E, until the stacking formation cofferdam of filling bag.
2. according to claim 1ly utilize frame of arranging waterborne to fill the cofferdam method of sand pocket, it is characterized in that: described filling bag comprises bag, some by the emersed cuff of described bag and some handles being located at described filling bag edge.
3. according to claim 1ly utilize frame of arranging waterborne to fill the cofferdam method of sand pocket, it is characterized in that: after described in described step B, station keeping ship enters construction location, head and the tail all descend crossed anchor, commander's windlass hand control strand anchor, preliminary running fix ship makes described frame sideline of arranging waterborne near filling bag embankment sideline, then utilize RTK to carry out line setting-out accurately to locate, by slowly repeatedly regulating, determine exact position.
4. according to claim 1ly utilize frame of arranging waterborne to fill the cofferdam method of sand pocket, it is characterized in that: arrange outside frame to waterborne in the top of montant described in described step C, described montant bottom is inserted in water-bed mud face.
5. according to claim 1ly utilize frame of arranging waterborne to fill the cofferdam method of sand pocket, it is characterized in that: after described step D medium sand ship is in place, be fixed on described station keeping ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460216.1A CN103485356B (en) | 2013-09-29 | 2013-09-29 | Overwater laying frame and method for filling sand pockets with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460216.1A CN103485356B (en) | 2013-09-29 | 2013-09-29 | Overwater laying frame and method for filling sand pockets with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103485356A CN103485356A (en) | 2014-01-01 |
| CN103485356B true CN103485356B (en) | 2015-06-17 |
Family
ID=49825911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310460216.1A Active CN103485356B (en) | 2013-09-29 | 2013-09-29 | Overwater laying frame and method for filling sand pockets with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103485356B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120727A (en) * | 2014-07-04 | 2014-10-29 | 上海交通建设总承包有限公司 | Construction method for hoisting and installing prefabricated bagged sand |
| CN104878792B (en) * | 2015-05-28 | 2018-01-16 | 中交一航局第二工程有限公司 | Immersed tube tunnel bedding rigid frame posture geotextiles cover anti-silting system and method |
| CN107100174B (en) * | 2017-04-26 | 2018-03-16 | 中国水利水电科学研究院 | A kind of design method of earthwork fabric-filled sand pocket |
| CN114750886B (en) * | 2022-05-24 | 2023-01-10 | 安徽省交通航务工程有限公司 | Method for constructing self-floating assembly type filling operation platform for soil engineering pipe bags |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR779516A (en) * | 1934-10-10 | 1935-04-08 | Process for the rapid and economical execution of maritime constructions in deep waters | |
| CN88203862U (en) * | 1988-02-29 | 1988-11-30 | 钟金龙 | Water combined bent |
| CN1811068A (en) * | 2005-10-14 | 2006-08-02 | 张雪松 | New cofferdam construction process for building pier in deep water river |
| CN201990952U (en) * | 2011-04-27 | 2011-09-28 | 中铁二十局集团第二工程有限公司 | Assembled floating body used for construction of underwater pile cap double-walled steel cofferdam |
| CN202007379U (en) * | 2011-04-14 | 2011-10-12 | 四川川交路桥有限责任公司 | Movable floating bridge convenient for deepwater bridge construction |
| CN202644551U (en) * | 2012-05-24 | 2013-01-02 | 浙江省第一水电建设集团股份有限公司 | Steel pipe pile cofferdam structure |
| CN203530995U (en) * | 2013-09-29 | 2014-04-09 | 中铁港航局集团有限公司 | Overwater mattress-laying frame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITPI20050030A1 (en) * | 2005-03-18 | 2006-09-19 | Francesco Sposito | METHOD TO REALIZE ARTIFICIAL ISLANDS AND WALLS TO BE INSTALLED IN CORRESPONDENCE WITH WATER BODIES AND SHORKS OF ANY SPECIES AND ARTIFICIAL ISLANDS AND WALLS OBTAINED SO |
-
2013
- 2013-09-29 CN CN201310460216.1A patent/CN103485356B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR779516A (en) * | 1934-10-10 | 1935-04-08 | Process for the rapid and economical execution of maritime constructions in deep waters | |
| CN88203862U (en) * | 1988-02-29 | 1988-11-30 | 钟金龙 | Water combined bent |
| CN1811068A (en) * | 2005-10-14 | 2006-08-02 | 张雪松 | New cofferdam construction process for building pier in deep water river |
| CN202007379U (en) * | 2011-04-14 | 2011-10-12 | 四川川交路桥有限责任公司 | Movable floating bridge convenient for deepwater bridge construction |
| CN201990952U (en) * | 2011-04-27 | 2011-09-28 | 中铁二十局集团第二工程有限公司 | Assembled floating body used for construction of underwater pile cap double-walled steel cofferdam |
| CN202644551U (en) * | 2012-05-24 | 2013-01-02 | 浙江省第一水电建设集团股份有限公司 | Steel pipe pile cofferdam structure |
| CN203530995U (en) * | 2013-09-29 | 2014-04-09 | 中铁港航局集团有限公司 | Overwater mattress-laying frame |
Non-Patent Citations (1)
| Title |
|---|
| 刘利.围堰土工膜袋水下灌砂的应用及总结.《城市建设理论研究(电子版)》.2012,(第35期),第1-6页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103485356A (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106351242B (en) | A kind of exposed high intensity sea area the Dou Yan steel trestle of the big flow velocity of deep water and its construction method | |
| CN108661081B (en) | A kind of inverted tension type anchor cable system support suspension tunnel structure | |
| CN102953341B (en) | A kind of high-order trestle work structure be arranged in deep water torrent intectate steep bare rock | |
| CN103046553B (en) | Method for carrying out deepwater laying on large-volume reinforced mud-filling tubular bags by using geotextiles-laying vessels | |
| CN105603881B (en) | A kind of the integral erection system and its construction method of large-scale arch bridge over strait | |
| CN103485356B (en) | Overwater laying frame and method for filling sand pockets with same | |
| CN205399220U (en) | Whole system of erectting of large -scale arched bridge over strait | |
| CN102322069B (en) | Underwater combination base of open caisson and steel pipe piles and construction method | |
| CN109506044A (en) | A kind of pipeline under the ocean construction technology | |
| CN202557970U (en) | Multi-room mine goaf filling string bag | |
| CN102677592B (en) | Method for erecting deepwater steel trestle and platform on exposed bedrock in shallow sea | |
| CN106522275B (en) | Self-propulsion type semi-submerged ship goes out the large-scale Immersed tunnel technique of fortune | |
| CN205348183U (en) | A novel guider for construction of driven pile pile sinking | |
| CN201980397U (en) | Underwater slipway for ship berth | |
| CN207452738U (en) | The deep water high-block bridge degree bridge construction naked rock river bed trestle of hard stone | |
| CN202170512U (en) | Underwater combined base for open caisson and steel pipe piles | |
| CN204298836U (en) | A kind of pile film cofferdam skeleton structure | |
| CN203876952U (en) | Pontoon system for immersed pipes to pass through rivers | |
| CN205171386U (en) | Interim mound in aquatic suitable for bridge erection | |
| CN109056762A (en) | A kind of construction method of island beach embankment | |
| CN210555475U (en) | Floating type drilling platform | |
| CN104594291B (en) | A kind of soft raft mattress sinking construction method that can improve mattress sinking smooth degree | |
| CN204401555U (en) | A kind of gate dam wave wall structure | |
| CN203530995U (en) | Overwater mattress-laying frame | |
| CN110777827A (en) | Structure capable of carrying out deep water area hollowing repair in rapid stream state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |