CN202509482U - Sand stop grid and sandbox grid embankment wall - Google Patents
Sand stop grid and sandbox grid embankment wall Download PDFInfo
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- CN202509482U CN202509482U CN2012200727169U CN201220072716U CN202509482U CN 202509482 U CN202509482 U CN 202509482U CN 2012200727169 U CN2012200727169 U CN 2012200727169U CN 201220072716 U CN201220072716 U CN 201220072716U CN 202509482 U CN202509482 U CN 202509482U
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Abstract
The utility model discloses a sand stop grid and sandbox grid embankment wall. The sand stop grid and sandbox grid embankment wall comprises a vertical plate and two base plates which are made from concretes; the vertical plate is provided with transverse ventilating grids; and the two base plates are located below the vertical plate and connected with the two ends of the vertical plate. The sand stop grid provided by the utility model can stop sands advancing in a saltation manner effectively and durably.
Description
Technical field
The utility model relates to a kind of sand-protecting barrier setting, relates more specifically to a kind of husky grid of retaining and sandbox hoarding dike of the sand that can durable interception advances with the saltation form.
Background technology
Desertification and control thereof are one of maximum and the most urgent problems of influence surface in the environment and development global problems.There are more than 100 countries and regions to have the desertification problem in the world.China is one of the most serious country of desertification in the world.Relate to west, northern territories such as Xinjiang, the Inner Mongol, Gansu, Ningxia, Shaanxi, Hebei, Shanxi, Liaoning, Beijing, Tianjin.Dust storm is to ecological environment, agricultural, forestry, animal husbandry, traffic, water conservancy, factory, mine, tourism, town and country construction, the commerce and trade logistics of China; Economic, cultural, social sustainable development and the people's productive life etc. cause great harm.How to strive to find conscientiously, the countermeasure and the means of efficient, lasting control wind erosion desertification (desertification), become the Chinese government and the west, northern numerous people is very great and urgent subject.
Desertification is to be the natural calamity of outstanding feature with the wind-sand activity.See that from fluid-mechanics point of view its essence is the result of stream motion.Stream is the mixed flow of the solid particle (grains of sand) of a kind of air-flow and carrying thereof, and its formation depends on the interaction of the physical medium of two kinds of different densities of the air and the sandy face of land.Wind gets in the air-flow and is handled upside down because wind makes the grains of sand break away from the face of land when the loose sandy face of land, causes the development of sand ground wind erosion, produces dust storm and moves, and stream occurs.
Dust storm motion has suspended, saltation, wriggling and move three kinds of citation forms in the top layer, is principal mode with the saltation.The saltation of the so-called grains of sand is meant that the grains of sand after receiving the wind-force effect of raising up to break away from the face of land to get into air-flow, just constantly obtain the momentum acceleration and advance from air-flow, and under the effect of grains of sand own wt, to fall rapidly with respect to very little acute angle of horizon.Because the density of air is much littler than the density of the grains of sand, the resistance that the grains of sand receive in motion process is less, when falling Shamian Island, still has sizable momentum.Therefore, the grains of sand itself that not only fall might rebound, and continue to bound forward, and because its percussion, and the entering jump of splashing of a part of grains of sand around can also causing to fall and break a little will cause a series of chain reaction like this.The grains of sand are done the motion of jump form so continuously, are called saltation.
A large amount of research of scientist shows, the strong wind sand of carrying under one's arms moves, i.e. the said stream of scientist mainly is to carry out pressing close to the height of surface, sand dune below 10 centimetres.Field inspection shows that also the sand amount overwhelming majority (more than 90%) of air-flow carrying is in the height on 30 centimetres on the sandy face of land, to pass through, and wherein concentrates in the airflow layer that is distributed in 0-10 centimetre (accounting for 80%) especially again.This shows that the dust storm motion is a kind of sand carrying phenomenon of ground proximity.Because the sand amount in the stream more than 90% is in the height on 30 centimetres on the face of land, to pass through, therefore adopt to exceed Shamian Island 20-30 centimetre sand-protecting barrier, just be enough to control the activity of sand dune surface wind sand drift.And set up sand-protecting barrier also is the more general technology of in the measure of sand fixing technology systems engineering, using.On the route that stream passed through, run into stopping of sand-protecting barrier, wind speed will be affected and reduce; The part of sand of carrying under one's arms will be deposited on sand-protecting barrier around; Hinder the saltation of the grains of sand with this, reduce the sedimentary loading of stream, thereby play the effect of control hazards of sand storms.The method of setting up sand-protecting barrier commonly used is with branch, faggot, stalk, gravel, clay, lath, wheat straw, moulds plate and similar material is provided with the various forms obstruction on Shamian Island; Change wind erosion aeolian accumulation environment; Slow down the direct effect of wind-force to the face of land; With control stream direction, speed, structure, reach the effect of fixing the sand, hinder sand, sediment trapping.Specific practice has:
1. straw checkerboard barrier sand-protecting barrier: wormwood is embedded in the sand, expose 10--15cm one section, make length and width and respectively be one meter grid, can prevent effectively that promptly drift sand from moving.Also available careless fence is a frame with timber, is embedded in the sand, is woven into net with wormwood in the wooden frame, and its height is more than one meter.Strong wind can pass in the grass net, and the sand that strong wind is carried under one's arms then is blocked in before the grass net.Straw checkerboard barrier and careless fence have a shortcoming, are exactly the life-span weak point, damage easily.
2. flush system sand-protecting barrier: utilize faggot, stalk, cobble, clay etc. comprehensively or band shape be tiled in husky table.Isolated wind contacts with husky table, though cause wind to cross and the effect of Sha Buqi.The tiling of grass straw can reach the original place tackling quicksand, the effect of protective plant growth.And dust storm evil area, wide vastness with type things such as stalks, is that lid is unequal to lid, separated at a distance from being unequal to, this has determined the humble of its total effect of defending and controlling sand.
3. vertical sand barrier: be divided into high vertical, low vertical.High vertical sand barrier: adopt high culm plant, directly lining out is on sand like reed, shrub branch, cornstalk and jowar stalk etc., and the degree of depth of imbedding in the sand bed is 30-50cm; Expose height more than 1 meter; Or these materials are weaved into the basketry piece, and nail is on wooden frame, and it is husky with choked flow to form high vertical sand barrier.Low vertical sand barrier: exceed Shamian Island 20-50cm, this type of also claims half concealed type sand-protecting barrier, the obstruction that manufacturing materials is made with straw, straw, soft stalk weeds etc.This kind mode is little to the grains of sand interception in the stream.
In preventing and fixing sand prior aries such as straw checkerboard barrier, flush system, high vertical, low vertical sand barrier, material therefor mainly is a vegetable matter, like stalk, wormwood, brush wood etc.; Both very easily addled; Application life is extremely short, and is regional in the dust storm evil because of these materials again, and the one, total amount is limited; The 2nd, the dust storm area just was starved of these plants originally, and can't large tracts of land use.Cut as cut in a large number, be used to build sand-protecting barrier, both can't satisfy the demand because of measuring less, more be as good as to cut the flesh to cure a boil.
Therefore, be necessary to provide a kind of improved sand-protecting barrier setting to overcome above-mentioned defective.
The utility model content
The purpose of the utility model provides the husky grid of retaining and the sandbox hoarding dike of the sand that efficient, the durable interception of a kind of ability advances with the saltation form.
For realizing above-mentioned purpose, the utility model provides a kind of retaining husky grid, comprising: by a riser and two substrates that Reinforced Concrete Materials is processed, said riser is provided with laterally ventilative lattice, and said two substrates are positioned at the below of said riser and are connected in the two ends of said riser.
Preferably, said riser protrudes out towards said substrate and forms two contiguous blocks, and each said substrate is provided with a connecting hole, and each said contiguous block correspondence is connected in the said connecting hole.
Preferably, the both sides of said riser are respectively equipped with two first bolts hole, and said substrate is provided with two second bolts hole in the both sides of said connecting hole, and said first bolt hole is connected through lateral conductor with said second bolt hole.
For realizing above-mentioned purpose, the utility model also provides a kind of sandbox hoarding dike, and said sandbox hoarding dike reaches a retaining sandbox that is connected with the husky grid of said retaining by the husky grid of a plurality of retainings and forms.
Preferably, removably connect through connector between said retaining sandbox and the husky grid of said retaining, removably connect through connector between two adjacent husky grid of retaining.
Preferably; Said connector comprises bolt and junction plate; The husky grid of said retaining sandbox and said retaining are removably connected with said bolt respectively; Said junction plate is removably connected to the bolt that is connected on two adjacent husky grid of retaining, and said junction plate also is removably connected to the bolt that is connected between husky grid of said retaining and the retaining sandbox.
Preferably; Base plate, front plate, backplate, Left-Hand Panel, right panel and lamina tecti that said retaining sandbox is processed by Reinforced Concrete Materials; Said base plate, front plate, backplate, Left-Hand Panel, right panel and lamina tecti enclose the inner chamber body that forms the retaining sandbox, are filled with sand in the said inner chamber body.
Preferably, be distributed with four perforation on the said base plate, be respectively equipped with two on said front plate and the said backplate and be connected voussoir, said connection voussoir is corresponding respectively to connect said perforation.
Preferably, respectively be provided with four the 3rd bolts hole on said front plate and the said backplate, respectively be provided with four the 4th bolts hole on said Left-Hand Panel and the said right panel, corresponding said the 4th bolt hole of said the 3rd bolt hole and connect through bolt.
Preferably, said Left-Hand Panel and said right panel are respectively the rectangular shape into the band groove.
Compared with prior art; The husky grid of the retaining of the utility model are processed by Reinforced Concrete Materials, and Reinforced Concrete Materials is made up of sand, rubble, reinforcing bar and cement, and these materials have matter heavily fortified point, durable, the strong characteristic of external force resistance (like high wind, severe cold, burning sun, salt marsh, blown sand impact etc.); Therefore make that the husky grid of retaining are durable in use; And can tackle the sand that advances with the saltation form efficiently, and make the sand that keeps off husky grid and can gather materials on the spot, turn harm into good in the desert region; So with low cost, and it is also very simple and easy to keep off the making of husky grid.In addition; Because of husky grid of a plurality of retainings that removably connect and retaining sandbox are formed sandbox hoarding dike; So even sandbox hoarding dike has been buried by sand in the process of long-term use; Also can at an easy rate sandbox hoarding dike be disassembled, on new Shamian Island, re-assembly new sandbox hoarding dike dike, make it to continue to bring into play the function of retaining sand.
Through following description and combine accompanying drawing, it is more clear that the utility model will become, and these accompanying drawings are used to explain the embodiment of the utility model.
Description of drawings
Fig. 1 keeps off the constitutional diagram of husky grid for the utility model.
Fig. 2 keeps off the exploded view of husky grid for the utility model.
Fig. 3 is the sketch map of the utility model retaining sandbox.
Fig. 4 is the sketch map of the utility model sandbox hoarding dike.
The specific embodiment
With reference now to accompanying drawing, the embodiment of the utility model is described, in the accompanying drawing similarly the assembly label represent similar assembly.As stated, the utility model provides husky grid of a kind of retaining and sandbox hoarding dike, the sand that husky grid of said retaining and efficient, the durable interception of sandbox hoarding dike ability are advanced with the saltation form.
Please refer to Fig. 1-4; Keep off husky grid 1 for not only as fence but also as the sand-protecting barrier facility of parapet; A riser 11 and two substrates 12 that it is processed by Reinforced Concrete Materials; Riser 11 is provided with laterally ventilative lattice 111, laterally the degree of porosity of ventilative lattice 111 be designed to about 25%, thereby have the function that better obstruction sand advances.Two substrates 12 are positioned at the below of riser 11 and are connected in the two ends of riser 11.
Each substrate 12 is provided with a connecting hole 121, and each contiguous block 112 correspondence is connected in the connecting hole 121.Substrate 12 is provided with two second bolts hole 122 in the both sides of connecting hole 121; Be inserted with bolt 28 on first bolt hole 113 and second bolt hole 122, and connect bolt 28 on first bolt hole 113 and second bolt hole 122 so that substrate 12 vertical stable being connected on the riser 11 through lateral conductor 13.
The manufacturing process of keeping off husky grid 1 is following: the first step: process template.The template that formation is kept off the reinforced concrete plate of the riser 11 of husky grid 1, substrate 12 is processed in design pattern according to the rules, specification, requirement respectively.Second step: process precast plate.According to design pattern and specification, with requirements such as material and match ratios thereof, use cement, sand, rubble, reinforcing bar to be material, process the prefabricated chunk of the reinforced concrete plate of the riser 11 that constitutes the husky grid 1 of retaining, substrate 12 respectively.The 3rd step: template group is dressed up the husky grid 1 of retaining.Two substrates 12 are parallel, horizontal to be put.Riser 11 is vertically sling, and, inserted respectively in the connecting hole 121 of two substrates 12, make riser 11 vertical with two substrates 12 with the contiguous block 112 at its two, left and right sides.With plain bolt 28 and bolt clip plate and lateral conductor 13 that make of reinforcing bar, flattening strap bolt hole, two, in the two of substrate 12 and the both sides of riser 11, riser 11 is vertically fixed on the base plate 12, thereby joint group is dressed up the husky grid 1 of retaining.
Retaining sandbox 2 is cuboid facilities, and it comprises base plate 21, front plate 22, backplate 23, Left-Hand Panel 24, right panel 25 and lamina tecti 26.Base plate 21, front plate 22, backplate 23, Left-Hand Panel 24, right panel 25 and lamina tecti 26 are processed by Reinforced Concrete Materials.Retaining sandbox 2 has an inner chamber body 27, and inner chamber body 27 is enclosed by base plate 21, front plate 22, backplate 23, Left-Hand Panel 24, right panel 25 and lamina tecti 26 and forms.Be filled with sand in the inner chamber body 27.
Be distributed with four rectangle perforation 211 on the base plate 21, the bottom of base plate 21 also is provided with two semi-circular groove 212 along its width, is used for tying up dress steel cable.The surface of base plate 21 is provided with two circular-arc protuberance bodies 213.
Respectively be provided with four the 3rd bolts hole 221 on front plate 22 and the backplate 23.The lower edge of front plate 22 and backplate 23 is extended with two towards said back of the body base plate 21 respectively and is connected voussoir 222.Connect voussoir 222 difference corresponding inserted in perforation 211, to connect on front plate 22, backplate 23 to the back of the body base plate 21.Also respectively be provided with two circular holes 223 on front plate 22 and the backplate 23, be used for tying up dress steel cable.
Left-Hand Panel 24 is respectively the rectangular shape into the band groove with right panel 25.Respectively being provided with four the 4th bolts hole, 241, the three bolts hole, 221 corresponding the 4th bolts hole and 241 on Left-Hand Panel 24 and the right panel 25 connects through bolt 28.
Lamina tecti 26 is provided with four through holes 261, is used for tying up dress steel cable.
The manufacturing process of retaining sandbox 2 is following: the first step: process template.The template of the reinforced concrete plate of the back of the body base plate 21 that constitutes cuboid retaining sandbox 2, front plate 22, backplate 23, Left-Hand Panel 24, right panel 25, lamina tecti 26 is processed in design pattern according to the rules, specification, requirement respectively.Second step: process precast plate.According to design pattern and specification, with requirements such as material and match ratios thereof; Use cement, sand, rubble, reinforcing bar to be material, process the prefabricated chunk of the reinforced concrete plate of the back of the body base plate 21 that constitutes cuboid retaining sandbox 2, front plate 22, backplate 23, Left-Hand Panel 24, right panel 25, lamina tecti 26 respectively.The 3rd step: aforementioned prefabricated chunk is assembled into retaining sandbox 2.Press the utility model pattern and specification requirement,, the cuboid box shape facility that can load sand is assembled, is coupled to each prefabricated chunk of steel concrete that constitutes retaining sandbox 2 with bolt 28 and pressing plate thereof.The 4th step: the filling sand is worn iron wire then in retaining sandbox 2.When sand be filled to front plate 22 and backplate 23 on circular hole 223 height such as grade the time be regarded as filling.With four iron leg lines, make four circles respectively.After the circle flattening, pass four through holes 261 on the lamina tecti 26 respectively.At the bottom of the plate face and plate of lamina tecti 26, with the iron wire circle that flattens, each turn-knob goes out four circles, and is one group (circle on the plate face is as hanging circle) with two circles.Lamina tecti 26 hung face on retaining sandbox 2 about 30cm.With two bundles of iron wires, after the end of a thread penetrates from the circular hole 223 of front plate 22 (or backplate 23) respectively, pass and hang two groups of circles that face under 26 of lamina tectis on the retaining sandbox 2, the circular hole 223 from backplate 23 (or front plate 22) passes again.Put down lamina tecti 26, it is inserted in the position of retaining sandbox 2 preparatory caving cover plates 26.Iron wire is pulled out the back tension, after a knot is pricked at the place of appearing, cut off.So far, sandbox is processed.
During use, the husky grid 1 of a plurality of retainings (keep off husky grid 1 and be generally 50) are connected through connector 29 and are connected with a retaining sandbox 2 at an end of the husky grid 1 of a plurality of retainings through connector 29, thereby constitute a sandbox hoarding dike.Connector 29 comprises bolt 28 and junction plate 291.Dismountable bolt 28 that is connected with on the front plate 22 of retaining sandbox 2 and the backplate 23 keeps off also dismountable bolt 28 that is connected with on the riser 11 of husky grid 1.And junction plate 291 is removably connected to the bolt 28 that is connected on two adjacent risers 11, and the also dismountable bolt 28 that is connected on front plate 22 (backplate 23) and the riser 11 that is connected in of junction plate 291.
Because constituting back of the body base plate 21, front plate 22, backplate 23, Left-Hand Panel 24, right panel 25 and the lamina tecti 26 of the riser 11 of the husky grid 1 of retaining and substrate 12 and retaining sandbox 2 is processed by Reinforced Concrete Materials; Reinforced Concrete Materials is made up of sand, rubble, reinforcing bar and cement; When making the husky grid 1 of retaining with retaining sandbox 2; Except that need rubble and little cement, reinforcing bar, main and peak discharge is used, be exactly almost be available anywhere, the sand in the dust storm evil area of use without compensation.Therefore, can gather materials on the spot, with husky sand control, turn harm into good.And these materials all are that matter is hard, durable, the strong material of external force resistance (high wind, blown sand impact, severe cold, burning sun, salt marsh etc.).Thereby the husky grid 1 of retaining that these materials are made are durable in use with retaining sandbox 2.Keep off husky grid 1 and retaining sandbox 2 through the detachable organic assembling of connector 29, thus just can form several kilometers, tens kilometers, the long sandbox dike of hundreds of kilometer by making in the very short time, efficiently sediment trapping, hold sand, fix the sand.The sand that retaining sandbox 2 inner chambers are loaded, the change of being stale-proof, quality is heavy, all by the tight parcel of reinforced concrete plate, makes retaining sandbox 2 not ruin because of building materials addle to go bad.At sediment trapping, hold sand, can bring into play efficient, stable, permanent, effect reliably in fixing the sand.In the leeward area of sandbox hoarding dike, can improve survival rate, the retention of the grass of planting trees greatly.Thereby dust storm evil problem fundamentally is curbed and even solves.
As stated; Because husky grid of said retaining 1 are processed by Reinforced Concrete Materials, Reinforced Concrete Materials is made up of sand, rubble, reinforcing bar and cement, and these materials have matter heavily fortified point, durable, the strong characteristic of external force resistance (like high wind, severe cold, burning sun, salt marsh, blown sand impact etc.); Therefore make that the husky grid of retaining 1 are durable in use; And can tackle the sand that advances with the saltation form efficiently, and make the sand that keeps off husky grid 1 and can gather materials on the spot, turn harm into good in the desert region; So with low cost, and it is also very simple and easy to keep off the making of husky grid 1.In addition; Because of husky grid 1 of a plurality of retainings that removably connect and retaining sandbox 2 are formed sandbox hoarding dike; So even sandbox hoarding dike has been buried by sand in the process of long-term use; Also can at an easy rate sandbox hoarding dike be disassembled, on new Shamian Island, re-assembly new sandbox hoarding dike dike, make it to continue to bring into play the function of retaining sand.
More than combine most preferred embodiment that the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to the essence of the utility model.
Claims (10)
1. the husky grid of retaining is characterized in that, comprising: by a riser and two substrates that Reinforced Concrete Materials is processed, said riser is provided with laterally ventilative lattice, and said two substrates are positioned at the below of said riser and are connected in the two ends of said riser.
2. the husky grid of retaining as claimed in claim 1 is characterized in that: said riser protrudes out towards said substrate and forms two contiguous blocks, and each said substrate is provided with a connecting hole, and each said contiguous block correspondence is connected in the said connecting hole.
3. the husky grid of retaining as claimed in claim 2; It is characterized in that: the both sides of said riser are respectively equipped with two first bolts hole; Said substrate is provided with two second bolts hole in the both sides of said connecting hole, said first bolt hole is connected through lateral conductor with said second bolt hole.
4. sandbox hoarding dike is characterized in that: said sandbox hoarding dike keeps off sandbox by husky grid of a plurality of retainings as claimed in claim 1 and of being connected with the husky grid of said retaining and forms.
5. sandbox hoarding dike as claimed in claim 4 is characterized in that: removably connect through connector between said retaining sandbox and the husky grid of said retaining, removably connect through connector between two adjacent husky grid of retaining.
6. sandbox hoarding dike as claimed in claim 5; It is characterized in that: said connector comprises bolt and junction plate; The husky grid of said retaining sandbox and said retaining are removably connected with said bolt respectively; Said junction plate is removably connected to the bolt that is connected on two adjacent husky grid of retaining, and said junction plate also is removably connected to the bolt that is connected between husky grid of said retaining and the retaining sandbox.
7. sandbox hoarding dike as claimed in claim 4; It is characterized in that: base plate, front plate, backplate, Left-Hand Panel, right panel and lamina tecti that said retaining sandbox is processed by Reinforced Concrete Materials; Said base plate, front plate, backplate, Left-Hand Panel, right panel and lamina tecti enclose the inner chamber body that forms the retaining sandbox, are filled with sand in the said inner chamber body.
8. sandbox hoarding dike as claimed in claim 7 is characterized in that: be distributed with four perforation on the said base plate, be respectively equipped with two on said front plate and the said backplate and be connected voussoir, said connection voussoir is corresponding respectively to connect said perforation.
9. sandbox hoarding dike as claimed in claim 7; It is characterized in that: respectively be provided with four the 3rd bolts hole on said front plate and the said backplate; Respectively be provided with four the 4th bolts hole on said Left-Hand Panel and the said right panel, corresponding said the 4th bolt hole of said the 3rd bolt hole and connect through bolt.
10. sandbox hoarding dike as claimed in claim 7 is characterized in that: said Left-Hand Panel and said right panel are respectively the rectangular shape into the band groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200727169U CN202509482U (en) | 2012-02-29 | 2012-02-29 | Sand stop grid and sandbox grid embankment wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200727169U CN202509482U (en) | 2012-02-29 | 2012-02-29 | Sand stop grid and sandbox grid embankment wall |
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| Publication Number | Publication Date |
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| CN202509482U true CN202509482U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200727169U Expired - Lifetime CN202509482U (en) | 2012-02-29 | 2012-02-29 | Sand stop grid and sandbox grid embankment wall |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877452A (en) * | 2012-11-07 | 2013-01-16 | 陈福汉 | Self-lifting sand board |
| CN102979044A (en) * | 2012-11-07 | 2013-03-20 | 张祥明 | Novel self-elevation sand retaining plate |
| CN104532761A (en) * | 2012-11-07 | 2015-04-22 | 胡小青 | Self-lifting type sand baffle |
| CN109281259A (en) * | 2018-11-12 | 2019-01-29 | 中铁西北科学研究院有限公司 | A kind of sliding sand stop wall and sand wall system |
-
2012
- 2012-02-29 CN CN2012200727169U patent/CN202509482U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877452A (en) * | 2012-11-07 | 2013-01-16 | 陈福汉 | Self-lifting sand board |
| CN102979044A (en) * | 2012-11-07 | 2013-03-20 | 张祥明 | Novel self-elevation sand retaining plate |
| CN102979044B (en) * | 2012-11-07 | 2015-01-14 | 胡小青 | Novel self-elevation sand retaining plate |
| CN104532761A (en) * | 2012-11-07 | 2015-04-22 | 胡小青 | Self-lifting type sand baffle |
| CN104762891A (en) * | 2012-11-07 | 2015-07-08 | 胡小青 | Self-elevation type sand blocking plate |
| CN104532761B (en) * | 2012-11-07 | 2016-08-17 | 胡小青 | A kind of from elevated sandboard |
| CN104762891B (en) * | 2012-11-07 | 2016-08-24 | 胡小青 | From elevated sandboard |
| CN109281259A (en) * | 2018-11-12 | 2019-01-29 | 中铁西北科学研究院有限公司 | A kind of sliding sand stop wall and sand wall system |
| CN109281259B (en) * | 2018-11-12 | 2023-10-24 | 中铁西北科学研究院有限公司 | Sliding type sand blocking wall and sand blocking wall system |
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Granted publication date: 20121031 |