CN103122625A - Protective hooking body - Google Patents
Protective hooking body Download PDFInfo
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- CN103122625A CN103122625A CN2013100585928A CN201310058592A CN103122625A CN 103122625 A CN103122625 A CN 103122625A CN 2013100585928 A CN2013100585928 A CN 2013100585928A CN 201310058592 A CN201310058592 A CN 201310058592A CN 103122625 A CN103122625 A CN 103122625A
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Abstract
The invention discloses a protective hooking body. The protective hooking body comprises a middle body. Opened hook bodies are arranged at two ends of the middle body, and the ratio of the length of the middle body and the side length of the hook bodies is 1.2:1-0.8:1. Other restraining devices do not need to be added between hooking body units, the hooking body units can be automatically hooked by being cast, integrity is good, a casting area of hooking bodies forms a porous structure, water flow can be effectively reduced, and the functions of energy dissipation and erosion control can be achieved. The ratio of the length of the middle body and the side length of the hook bodies is limited, hooking capacity of the hooking body units can be improved due to the structure, the hooking body units can be easily hooked with each other when randomly placed, separation of the hooking body units is difficult, and the protective hooking body can be widely used in engineering construction of bank protection, bridge pier protection, navigation channel protection, dams and the like.
Description
Technical field
The present invention relates to a kind of safeguard structure, particularly relate to a kind of member from can realize that the protection that links separately links body under loose throwing state.
Background technology
Navigation channel preventive works example in the past shows, the destruction of protecting beach or river bottom protection in the protective structure of navigation channel is to cause that protective structure damages and the one of the main reasons of beach mortise shakiness.The measure of guarding of at present the basic sand body of seashore and protective structure being avoided washing away is to utilize the weight of protecting beach or river bottom protection isostere self to keep the stable of seashore or river bottom protection mostly.Guarding of this entirely passive type under higher flow condition, due to the reasons such as pulsating nature of current, causes local scour between isostere edge or watch box finally to form the situation of heavy damage comparatively common.
development along with the engineering science technology, increasing people begins one's study to improve and protects the beach, the structural shape that river bottom protection destroys, the domestic Han Ying of Xibei Inst. of Water Conservancy Science, Ministry of Water Resources sight at the end of the eighties in last century waits and has proposed a kind of Triangular Taper Penetrating water-permeable frame, obtained using preferably in bank revetment reinforcement, but also come with some shortcomings in practice, be mainly reflected in following two aspects: (1) Triangular Taper Penetrating water-permeable frame is when reality is used, due to linking property between each Triangular Taper Penetrating water-permeable frame a little less than, need 3～5 colligations to jettisoning, but resistance to overturning is still not enough, produce displacement under flow action, reduced protection effect, (2) the easy burn into cracking of Triangular Taper Penetrating water-permeable frame rod member weld, rod member is scattered, and causes structure to be destroyed fully.
Summary of the invention
In order to solve the deficiency in above-mentioned engineering in the past, the object of the present invention is to provide a kind of member from can realize that the protection that links separately links body under loose throwing state, it can effectively improve water-bed water flow structure, form energy dissipating erosion control effect preferably guarding the district, has preferably stability, durability and economy and facilitates engineering construction.
Protection of the present invention links body, comprises intermediate, and the two ends of intermediate have the hook body of opening, and intermediate length is 1.2:1 ~ 0.8:1 with the ratio that hooks the body length of side.Wherein, above-mentioned intermediate length and the hook body length of side are the length of axis.
Protection of the present invention links body, has the hook body of opening by intermediate and intermediate two ends, and linking between body unit need not increase other constraints, by jettisoninging, can realize between the unit initiatively linking, and the body that links that links together like this is difficult to by separately.When produce chain effect or link together link body quantity and increase after, owing to can realizing initiatively linking between each unit, globality is better, links the body zone of jettisoninging and forms the porosity structure, can effectively reduce water velocity, plays the effect of energy dissipating erosion control.Intermediate length is 1.2:1 ~ 0.8:1 with the ratio that hooks the body length of side, and such structure can improve the ability that links that links between body unit, arbitrarily leaves about, and can be easy to link mutually each other, breaks away from more difficult; Intermediate length is excessive with the ratio that hooks the body length of side, links to know from experience side and fall, and forms microscler stackingly, and the density that links the body stacking is inadequate, is easy to be flushed away; Intermediate length is too small with the ratio that hooks the body length of side, links body and hooks not, links body and can not mutually catch on just to have lost and link the basic function that body can reach, and wherein, the described hook body length of side refers to hook the bottom lengths of body, interior arm lengths or outer arm lengths.
Protection of the present invention links body, preferred intermediate length is 1.05 ~ 1.2:1 with the ratio that hooks the body length of side, this structure makes intermediate and two ends hook body and forms a space tetragonal body, make the whole body that links have isotropism, can improve like this ability that links that links between body unit, arbitrarily leave about, can be easy to link mutually each other, break away from more difficult.
Protection of the present invention links body, hooks body and be by a bottom to be connected to the hook that a side that inner arm, outer arm consist of has opening, and inner arm is connected with intermediate, and such structure has the good ability that links.
Protection of the present invention links body, described intermediate and/or hook body are made of the column of hollow, be connected with some reinforcing ribs on the column inwall, form poroidly between each reinforcing rib, one side can be saved material like this, reduce costs, reduce own wt, after linking body and being thrown into seashore, silt etc. can be packed in the cavernous structure of formation on the other hand, the deadweight that links body is increased, can better play the effect of erosion control.
Protection of the present invention links body, described reinforcing rib is the two groups of tangent circular arcs in up and down, circular arc is end to end and the formation that is connected with inwall is some poroid, the setting of tangent arc not only can improve the intensity that hooks body, and can reduce stress, in protection process, the hook body structure is difficult for destroyed, improve the application life that links body.
Protection of the present invention links body, and described reinforcing rib can also be other various ways, as being palisade, " Z " shape or " X " shape.
Of the present invention to link the thick thickness with reinforcing rib of body wall identical, is preferably 1-4mm.
Protection of the present invention links body, can be one-body molded between intermediate and hook body, and can be also dismountable.When intermediate and hook when detachable between body, intermediate with hook body and be connected by snap ring or bayonet lock, make the two hook bodies can be around intermediate any direction rotation again, thus the probability that increase links.
Protection of the present invention links body, hook body and join end to end the area of the enclosed planar that forms for hooking bulk area, hook the cross-sectional area of body column for hooking the body section area, hooking bulk area is 50:1-200:1 with the ratio that hooks the body section area, the enclosed planar that forms is square if the hook body joins end to end, and hooking bulk area is that the length of side * length of side is long-pending; The enclosed planar that forms is rectangle if the hook body joins end to end, and hooks bulk area wide long-pending for long *; If it is trapezoidal hooking the body enclosed planar that forms that joins end to end, hooking bulk area and be 1/2(upper base+go to the bottom) * is high.Wherein, the above-mentioned length of side, length and width, upper base, go to the bottom, length that height is axis.
Protection of the present invention links body, and described intermediate and hook that the cross section of body can be for various ways is as being " U " tee section, circular cross-section or square-section, preferred " U " tee section.
The present invention can adjust intermediate and hook the yardsticks such as draw ratio of body, can form different pore characters like this, thereby play wave, current, the silt condition that adapts to zones of different, reaches better erosion control, short silt function.
The material that protection of the present invention links body is plastics, is preferably the plastics of large proportion.
The invention also discloses and a kind ofly link by protection the space structures of piling up that body forms, described protection links body to have first and hooks body, second and hook body, when two protection link body and intersect, links and hooks by first between body that body, second hooks body or intermediate links.
Protection of the present invention links body and can arbitrarily link in the process of piling up.This character can form fast, effectively piles up space structures.
The space structures of piling up of the present invention also comprises filtering material, and described filtering material contacts with the part that protection links body at least.If the space packing structure is used for reinforce dikes and dams, soil, sand, the such material of gravel can be filled in space structures.The protection that mutually links links body can guarantee to be connected with the dykes and dams core strong connection.According to the kind of filtering material, such dykes and dams core can allow water to see through or vegetation growth.According to required, the filtering material in packing structure can be varied, as contain natural materials (soil body) and (or) plastics and (or) glue with (or) other materials etc.
The space structures of piling up of the present invention is used for covering or reinforcing surface infrastructure.Described surface infrastructure contains an inclined surface, be specially dam body, under water or this part on the water, the part under water.
Of the present invention to pile up space structures of many uses, such as artificial reef, road and building-supporting, grid, wirerope, canvas cloth, chinampa, pile crown, single footing, abrupt slope, temporary road, steel concrete etc. prevent the soil erosion, soil stabilization, build a dam or control flood.When being used as the covering of flow surface, protection links body and can be designed to hollow form to satisfy specific quality needs.When being applied to that the seabed reinforces or manufacturing artificial reef etc., pile up the unit and can be placed from ship and plunge into the commercial sea, when arriving the seabed, connect together by flow action or diver's hook.
The invention also discloses a kind of formation and pile up the method for space structures, comprise: have a large amount of protection and link body, each protection links body and contains the first hook body, and second hooks body and first hooks body, and second hooks the intermediate between body; Protection links body and piles up placement formation space structures, and protection links between body and links at random.
Description of drawings
Fig. 1 is the structural representation that protection links body.
The specific embodiment
Further illustrate the present invention below by the specific embodiment, following examples are the better embodiment of the present invention, but embodiments of the present invention are not subjected to the restriction of following embodiment.
Embodiment 1
As shown in Figure 1, protection links body, comprises intermediate 3, the two ends of intermediate 3 have opening hook body 1, hook body 2, hook body 1 and be by a bottom 11 and be connected to the hook that a side that inner arm 12, outer arm 13 consist of has opening, inner arm 12 joins with intermediate 3; Hook body 2 and be by a bottom 21 and be connected to the hook that a side that inner arm 22, outer arm 23 consist of has opening, inner arm 22 joins with intermediate 3, hooks body 1, hooks body 2 and form a space tetragonal body with intermediate 3.
Hook body 1, hook body 2 are made of the column of hollow, and the cross section that hooks body 1, hook body 2 and intermediate 3 is " U " tee section.
Hook on body 1, hook body 2 inwalls and be connected with some reinforcing ribs, reinforcing rib is the two groups of tangent circular arcs in up and down, and circular arc is end to end and the formation that is connected with inwall is many poroid.
It is dismountable hooking body 1, hooking between body 2 and intermediate 3, hooks body 1, hooks between body 2 and intermediate 3 and be connected by bayonet lock, so that dismantle and assemble, is beneficial to transportation.
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 1mm; Hook body 1, hook body 2 length of side 600mm*600 mm, intermediate 3 length 630mm, the section area that hooks body 1, hook body 2 is 60mm*60mm, intermediate length: hooking the body length of side is 1.05:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m, through Real-Time Monitoring and statistics, to measure and carry out at normal temperatures (15 ~ 30 ℃), test result is as shown in table 1.
Embodiment 2
The cross section that hooks body 1, hook body 2 and intermediate 3 is the square-section, hook on body 1, hook body 2 inwalls and be connected with some reinforcing ribs, reinforcing rib is palisade, and it is dismountable hooking body 1, hooking between body 2 and intermediate 3, hook body 1, hook between body 2 and intermediate 3 and be connected by snap ring, all the other are with embodiment 1;
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 4mm; Hook body 1, hook body 2 length of side 400mm*300 mm, intermediate 3 length 480mm, the section area that hooks body 1, hook body 2 is 40mm*30mm, intermediate length: hooking the body length of side is 1.2:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m, through Real-Time Monitoring and statistics, to measure and carry out at normal temperatures (15 ~ 30 ℃), test result is as shown in table 1.
Embodiment 3
The cross section that hooks body 1, hook body 2 and intermediate 3 is circular cross-section, hooks on body 1, hook body 2 inwalls and is connected with some reinforcing ribs, and reinforcing rib is " Z " shape, and hooking body 1, hooking between body 2 and intermediate 3 is that the arc transition section is integrated, and all the other are with embodiment 1;
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 2mm; Hook body 1, hook body 2 length of side 600mm*300mm, intermediate 3 length 480mm, the section area that hooks body 1, hook body 2 is 3600mm
2Intermediate length: hooking the body length of side is 0.8:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m, through Real-Time Monitoring and statistics, to measure and carry out at normal temperatures (15 ~ 30 ℃), test result is as shown in table 1.
Embodiment 4
The cross section that hooks body 1, hook body 2 and intermediate 3 is circular cross-section, hooks on body 1, hook body 2 inwalls and is connected with some reinforcing ribs, and reinforcing rib is " Z " shape, and hooking body 1, hooking between body 2 and intermediate 3 is that the arc transition section is integrated, and all the other are with embodiment 1;
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 2mm; Hook body 1, hook body 2 length of side 600mm*300mm, intermediate 3 length 480mm, the section area that hooks body 1, hook body 2 is 3600mm
2Intermediate length: hooking the body length of side is 1.1:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m, through Real-Time Monitoring and statistics, to measure and carry out at normal temperatures (15 ~ 30 ℃), test result is as shown in table 1.
Embodiment 5
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 1mm; Hook body 1, hook body 2 length of side 600mm*600 mm, intermediate 3 length 648mm, the section area that hooks body 1, hook body 2 is 60mm*60mm, intermediate length: hooking the body length of side is 1.08:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m through Real-Time Monitoring and statistics, measures and carries out at normal temperatures (15 ~ 30 ℃), all the other are with embodiment 1, and test result is as shown in table 1.
Embodiment 6
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 1mm; Hook body 1, hook body 2 length of side 600mm*600 mm, intermediate 3 length 690mm, the section area that hooks body 1, hook body 2 is 60mm*60mm, intermediate length: hooking the body length of side is 1.15:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m through Real-Time Monitoring and statistics, measures and carries out at normal temperatures (15 ~ 30 ℃), all the other are with embodiment 1, and test result is as shown in table 1.
Embodiment 7
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 1mm; Hook body 1, hook body 2 length of side 600mm*600 mm, intermediate 3 length 672mm, the section area that hooks body 1, hook body 2 is 60mm*60mm, intermediate length: hooking the body length of side is 1.12:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m through Real-Time Monitoring and statistics, measures and carries out at normal temperatures (15 ~ 30 ℃), all the other are with embodiment 1, and test result is as shown in table 1.
Embodiment 8
A large amount of protection shown in Figure 1 is linked the body unit throwing of freely faling apart, protection link body unit form pile up link the body space structure, respectively link and can arbitrarily link formation porosity structure between body unit, this structure can effectively reduce current, plays the effect of energy dissipating erosion control.
Comparative Examples 1
Hook on body 1, hook body 2 inwalls and be connected with some reinforcing ribs, reinforcing rib is " X " shape, and all the other are with embodiment 1;
Protection shown in the present embodiment links plastics polypropylene+BaSO that the body material therefor is large proportion
4, proportion is 2.0g/cm
3, link the thick thickness with reinforcing rib of body wall identical, be 4mm; Hook body 1, hook body 2 length of side 400mm*300 mm, intermediate 3 length 600mm, the section area that hooks body 1, hook body 2 is 800mm
2Intermediate length: hooking the body length of side is 1.5:1, after linking the body assembling and completing, throws in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, depth of water 10m, through Real-Time Monitoring and statistics, to measure and carry out at normal temperatures (15 ~ 30 ℃), test result is as shown in table 1.
Comparative Examples 2
Intermediate length: hooking the body length of side is 0.5:1, after linking body assembling and completing, throw in regional 10m*10m, throw in uniformly, throw in 12000 and finish afterwards, the every 1/5s of input speed, current are turbulent flow, and depth of water 10m is through Real-Time Monitoring and statistics, measure and carry out at normal temperatures (15 ~ 30 ℃), test result is as shown in table 1.
The protection of table 1 embodiment and Comparative Examples links the intermediate length of body and the test result that links of the ratio that hooks the body length of side
| Intermediate length: hook the body length of side | Link body and catch on mutually probability | The space links the density of body |
| 1.5:1 | 45~50% | 5000/1000m 3 |
| 1.2:1 | 75~80% | 8000/1000m 3 |
| 1.15:1 | 80~85% | 8700/1000m 3 |
| 1.12:1 | 83~88% | 9200/1000m 3 |
| 1.08:1 | 90~95% | 10000/1000m 3 |
| 1.1:1 | 85~90% | 9500/1000m 3 |
| 1.05:1 | 93~98% | 11000/1000m 3 |
| 0.8:1 | 75~80% | 8000/1000m 3 |
| 0.5:1 | 25~30% | 2000/1000m 3 |
Can see from table 1 data, when intermediate length: hook the span that the body length of side selects to surpass 1.2:1 ~ 0.8:1, the space density that links body can reduce greatly, catch on mutually to link body heavy not, will be easy to be washed away by the river, do not reach the effect of protection; Intermediate length: hooking the body length of side, to be chosen in 1.2:1 ~ 0.8:1 be not comparatively rational, and preferably, described intermediate length: hook the body length of side and select 1.05:1 ~ 1.2:1, such structure easily links, and yielding and have stronger intensity.Protection of the present invention links body can be widely used in the engineering constructions such as seashore protection, Bridge Pier, navigation channel protection and dykes and dams.
Claims (18)
1. a protection links body, it is characterized in that, comprises intermediate, and the two ends of intermediate have the hook body of opening, and intermediate length is 1.2:1 ~ 0.8:1 with the ratio that hooks the body length of side.
2. protection according to claim 1 links body, it is characterized in that: intermediate length is 1.05 ~ 1.2:1 with the ratio that hooks the body length of side.
3. protection according to claim 1 and 2 links body, it is characterized in that, described hook body is to be connected to by a bottom hook that a side that inner arm, outer arm consist of has opening, and inner arm is connected with intermediate.
4. protection according to claim 1 and 2 links body, it is characterized in that, described intermediate and/or hook body are made of the column of hollow, are connected with some reinforcing ribs on the column inwall, form poroid between each reinforcing rib.
5. protection according to claim 4 links body, it is characterized in that, described to link the thick thickness with reinforcing rib of body wall identical, is 1-4mm.
6. protection according to claim 4 links body, it is characterized in that, described reinforcing rib is the two groups of tangent circular arcs in up and down, and circular arc is end to end and the formation that is connected with inwall is some poroid.
7. protection according to claim 4 links body, it is characterized in that, described reinforcing rib is palisade, " Z " shape or " X " shape.
8. protection according to claim 1 and 2 links body, it is characterized in that: described intermediate is connected by snap ring or bayonet lock with hooking between body.
9. protection according to claim 1 and 2 links body, it is characterized in that: described hook body joins end to end the area of the enclosed planar that forms for hooking bulk area, hook the cross-sectional area of body column for hooking the body section area, hooking bulk area is 50:1-200:1 with the ratio that hooks the body section area.
10. protection according to claim 1 and 2 links body, it is characterized in that: described intermediate is " U " tee section, circular cross-section or square-section with the cross section that hooks body.
11. protection according to claim 1 links body, it is characterized in that, the material that described protection links body is plastics.
12. one kind links by protection the space structures of piling up that body forms, and it is characterized in that, described protection links body to have first and hooks body, second and hook body, when two protection link body and intersect, links and hooks by first between body that body, second hooks body or intermediate links.
13. the space structures of piling up according to claim 12 is characterized in that, also comprises filtering material, described filtering material contacts with the part that protection links body at least.
14. the space structures of piling up according to claim 13 is characterized in that described filtering material comprises soil body material, plastic material or colloidal materials.
15. the space structures of piling up according to claim 12 is characterized in that, the described space structures of piling up is used for covering or reinforcing surface infrastructure.
16. the space structures of piling up according to claim 15 is characterized in that, described surface infrastructure contains an inclined surface.
17. the space structures of piling up according to claim 16 is characterized in that, described surface infrastructure be dam body, under water or this part on the water, the part under water.
18. forming the method for piling up space structures comprises: have a large amount of protection and link body, each protection links body and contains the first hook body, and second hooks body and first hooks body, and second hooks the intermediate between body; Protection links body and piles up placement formation space structures, and protection links between body and links at random.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058592.8A CN103122625B (en) | 2013-02-25 | 2013-02-25 | A kind of protection links body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310058592.8A CN103122625B (en) | 2013-02-25 | 2013-02-25 | A kind of protection links body |
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| Publication Number | Publication Date |
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| CN103122625A true CN103122625A (en) | 2013-05-29 |
| CN103122625B CN103122625B (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122623A (en) * | 2013-02-25 | 2013-05-29 | 金发科技股份有限公司 | Protective hooking body |
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| CN202577225U (en) * | 2012-05-09 | 2012-12-05 | 长江航道规划设计研究院 | Unclosed water permeable vertical member for river regulation |
| JP5095030B1 (en) * | 2012-07-12 | 2012-12-12 | 吉村隆顕 | Slope forming block, slope structure and slope forming method |
| CN203256692U (en) * | 2013-02-25 | 2013-10-30 | 金发科技股份有限公司 | Protective hooking and connecting body and piled-up space structure composed of same |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008255576A (en) * | 2007-03-31 | 2008-10-23 | Kikkoen:Kk | River bed forming block, river bed structure using the block, and river bed forming method |
| JP2011017206A (en) * | 2009-07-09 | 2011-01-27 | Sadao Tomita | Combination block and linked structure using the same |
| CN102619190A (en) * | 2012-03-26 | 2012-08-01 | 上海河口海岸科学研究中心 | Permeable framework |
| CN202577225U (en) * | 2012-05-09 | 2012-12-05 | 长江航道规划设计研究院 | Unclosed water permeable vertical member for river regulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103122623A (en) * | 2013-02-25 | 2013-05-29 | 金发科技股份有限公司 | Protective hooking body |
| CN103122623B (en) * | 2013-02-25 | 2015-09-30 | 金发科技股份有限公司 | A kind of protection links body |
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| Publication number | Publication date |
|---|---|
| CN103122625B (en) | 2015-09-09 |
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