CN1746431A - Reducing and wash preventing method of artificial float - Google Patents
Reducing and wash preventing method of artificial float Download PDFInfo
- Publication number
- CN1746431A CN1746431A CN 200510029656 CN200510029656A CN1746431A CN 1746431 A CN1746431 A CN 1746431A CN 200510029656 CN200510029656 CN 200510029656 CN 200510029656 A CN200510029656 A CN 200510029656A CN 1746431 A CN1746431 A CN 1746431A
- Authority
- CN
- China
- Prior art keywords
- ribbon
- heelpiece
- artificial float
- reducing
- preventing method
- 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.)
- Pending
Links
Landscapes
- Revetment (AREA)
Abstract
A slowing-down scour protection method of artificial floater belonging to hydraulic engineering technology is provided. Artificial floater is set on scour protection parts to increase roughness of bed surface in order to reduce current velocity. Artificial floater is wearing, flexible and stripped bedding material. They are set on rope of foot web uniformly. Stripped bedding material is lighter than water. They are drifted when water flows. Lower end of it is fixed on foot web.
Description
Technical field
What the present invention relates to is a kind of method of hydraulic engineering technical field, specifically, is reducing and wash preventing method of artificial float.
Background technology
Wash away and be a kind of disastrous problem that often runs into, unsettled as pipeline by scour, cause pipe deforming, fracture; Bridge pier washes away and causes that bridge collapses; The bank base washes away and causes the riverbank avalanche; Current scour behind the dam; Erosional retreat appears in China's coastal sand coast of existing 70% now, and large stretch of sandy beach has not existed, and the bathing beach is corroded, and the tourist quarters is forced to close.Past washes away in order to prevent, usually makes by placing in the current bottom of washing away generation the bamboo cage or the iron cage of cobble are housed, or directly place boulder, directly stops current washing away bed surface.Yet these conventional approach do not reduce at the flow velocity that will protect and prevent to wash away the position, in case bamboo cage or iron cage corrosion failure, or the boulder of placing is flushed away, and prevents the disabler of washing away; In addition, because burying of silt needs the stone amount of input big, the engineering cost height.Therefore, invention prevents that the effective ways of current scour have extremely important national economy and are worth.
Find China's application (patent) number by prior art documents: 98121425.8, open (bulletin) number: 1218129, open (bulletin) day: 1999.06.02.Patent name is: the protection against erosion member of aouatic structure thing and protection against erosion construction method, be a kind of protection against erosion member with a kind of aouatic structure thing and the protection against erosion construction method that uses this protection against erosion member, this member is by constituting with the lower part: the netting twine line footpath M that makes with braid and the long limit N of mesh satisfy bag that formula 3≤N/M≤20 concern, pass near the mesh this bag peristome annular hoist cable, pass and wear.Have near the mesh of hoist cable mesh and with the rope of tightening of the peristome sealing of bag.This patent weak point is: 1) mechanism that minimizing is washed away is unclear, still belongs to traditional wash preventing method; 2) though this invention can make described works closely contact with bed surface; but; because in the not minimizing of flow velocity that will protect and prevent to wash away the position; described works is washed away by strong current easily; and because constantly washing away of current can cause that described works moves and part is buried in silt; cause the disabler of its erosion control, therefore, need the engineering cost height.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of reducing and wash preventing method of artificial float is provided.Make it be used to prevent washing away of hydraulic structure, riverbank and seabeach protection, implement simply, cost is low, the effect height.
The present invention is achieved through the following technical solutions, and on riverbed or sea bed bed surface that scattered seed is formed, when the current sand holding ability in somewhere during greater than the sand content of upstream incoming flow, erosion will be washed away or claim in this place, otherwise then deposit; Flow rate of water flow is the principal element of the local current sand holding ability of decision, and the immediate cause of washing away is that the water velocity of locality is too big, and the current sand holding ability is higher than actual next husky content.Reduce the current sand holding ability and just must reduce water velocity.The present invention is by washing away at bed surface or the scour protection position is provided with artificial float, increases near the roughness bed surface, to reduce the flow velocity of local current, reduces local current sand holding ability, avoids or reduces the purpose of washing away thereby reach.
Artificial float can be the bands of wear-resisting flexibility, is arranged on the nettle of flexible heelpiece net.The proportion of ribbon is lighter than water, and avirulence can be that polyurethane or other macromolecule are made.In static water body, ribbon is suspended in the water body; When water body flowed, ribbon drifted about downstream, and it is online that its lower end is fixed on heelpiece.Ribbon also can be wear-resisting flexible cylinder.
Can make system be applicable to required purposes by the parameters such as proportion, ribbon spacing and ribbon length of selecting ribbon.The proportion of ribbon is usually less than 1, and flow rate of water flow is big more, the proportion of required ribbon with more little be principle; Ribbon spacing and ribbon length also depend on local flow intensity, and flow rate of water flow is high more, and the scouring capability of current is strong more, and flow rate of water flow is big more, the spacing of required ribbon with more little, ribbon length is long more is principle.The ribbon spacing is generally the width of 0.5-5 times of ribbon, and ribbon length is generally the doubly maximum degree of depth of washing away of 0.5-1.In case of necessity, determine by hydraulic model test.
The heelpiece net is worked out by flexible cable, and material can be nylon rope or other macromolecular material, above mesh be divided into major network eye and time mesh.The major network eye is worked out with the hawser bundle, and inferior mesh is worked out with the cord bundle; A heavy thing piece is set on each lattice point of heelpiece host mesh, as long as environment is not polluted and economical, the proportion of thing piece must be greater than 2, and proportion is the bigger the better, and as iron ball, prevent to be washed away by current on bed surface with fixing heelpiece net.
During use; make the heelpiece net of some band artificial floats and iron ball according to the method described above; the piece number of heelpiece net depends on the size of the bed surface area that will protect; with machinery or manually the heelpiece net closely is laid on the bed surface of protection; artificial float is towards the water surface; iron ball places bed surface; but during flow; artificial float lodges downstream; effectively increase near the resistance of bed surface; near the bed surface water velocity significantly reduces, thereby significantly reduces the sand holding ability of current, reaches to avoid or reduce the purpose of washing away.
Compared with prior art, basic principle of the present invention is to utilize artificial float, increases near the roughness bed surface, to reduce the flow velocity of local current, reduces local current sand holding ability, avoids or reduces the purpose of washing away thereby reach.What the present invention can be widely used near pipelines such as the scour protection, near the scour protection the bridge pier, petroleum gas all kinds of hydraulic structures basis crosses the sail across a sea scour protection etc. at scour protection, riverbank and seashore seabeach on basis of river.Because artificial float waving in water body, increased the blending of upper strata water body and lower floor's water body, the oxygen of upper strata water body can enter the lower floor of water body more, thus the present invention also can be used for promoting aerobic and anaerobic reaction with control water quality.Technology of the present invention is implemented simple, and cost is low, the effect height.
The specific embodiment
Provide following examples in conjunction with content of the present invention:
Embodiment 1
The heelpiece net of a flexibility of rope bundle establishment of the high-strength abrasion-proof made from nylon rope, the major network eye is of a size of 50 centimetres and takes advantage of 50 centimetres, and with the establishment of hawser bundle, inferior mesh is of a size of 5 centimetres and takes advantage of 50 centimetres, works out with the cord bundle; A heavy iron ball of 5 kilograms is set on each major network field of vision point of heelpiece net, and iron ball places the bottom of heelpiece net; Artificial float is to have the band that flexible polyurethane is made, and the length of band is 1 meter, 2 centimetres of width, and 3 millimeters of thickness, the lower end of band is fixedly installed on all nettles of heelpiece net, is provided with one every 5 centimetres.Every heelpiece net is of a size of 4 meters and takes advantage of 4 meters, makes 50 altogether.
The heelpiece net of band artificial float and iron ball closely is laid on the bridge pier bed surface on every side; artificial float is towards the water surface; iron ball places bed surface; bed surface upper edge water (flow) direction around bridge pier is laid 10; lay 5 along the bridge location direction; the column type bridge pier that diameter is 1 meter is in the center of safeguard measure, forms long 40 meters wide 20 meters scour protection district.
Embodiment 2
The heelpiece net of a flexibility of rope bundle establishment of the high-strength abrasion-proof made from nylon rope, the major network eye is of a size of 50 centimetres and takes advantage of 50 centimetres, and with the establishment of hawser bundle, inferior mesh is of a size of 5 centimetres and takes advantage of 5 centimetres, works out with the cord bundle; A heavy iron ball of 5 kilograms is set on each major network field of vision point of heelpiece net, and iron ball places the bottom of heelpiece net; Artificial float is to have the cylinder that flexible polyurethane is made, and the length of cylinder is 1 meter, 0.5 centimetre of diameter of section, and the lower end of cylinder is fixedly installed on all nettles of heelpiece net, is provided with one every 5 centimetres.Every heelpiece net is of a size of 4 meters and takes advantage of 4 meters, makes 5000 altogether.
The heelpiece net of band artificial float and iron ball closely is laid on the pipeline under the ocean bed surface on every side; artificial float is towards the water surface; iron ball places bed surface; bed surface upper edge pipeline under the ocean direction around pipeline under the ocean is laid 1000; lay 5 perpendicular to the pipeline under the ocean direction; pipeline under the ocean is in the center of safeguard measure, forms long 4000 meters wide 20 meters scour protection district.
Embodiment 3
The heelpiece net of a flexibility of rope bundle establishment of the high-strength abrasion-proof made from nylon rope, the major network eye is of a size of 1 meter and takes advantage of 1 meter, and with the establishment of hawser bundle, inferior mesh is of a size of 10 centimetres and takes advantage of 10 centimetres, works out with the cord bundle; A heavy iron ball of 10 kilograms is set on each major network field of vision point of heelpiece net, and iron ball places the bottom of heelpiece net; Artificial float is to have the cylinder that flexible polyurethane is made, and the length of cylinder is 2 meters, 0.5 centimetre of diameter of section, and the lower end of cylinder is fixedly installed on all nettles of heelpiece net, is provided with one every 5 centimetres.Every heelpiece net is of a size of 4 meters and takes advantage of 4 meters, makes 1000 altogether.
The heelpiece net of band artificial float and iron ball closely is laid on the bed surface in dam protection-apron downstream; artificial float is towards the water surface; iron ball places bed surface; lay 100 in the river course, bed surface upper edge in dam protection-apron downstream direction; the river cross-section direction is laid 10; the setting of safeguard measure arises from dam protection-apron tail, forms long 400 meters wide 40 meters scour protection district.
By above 3 embodiment as can be seen: technology of the present invention is implemented simple, and cost is low, and the effect height is a kind of method of economy.
Claims (7)
1. reducing and wash preventing method of artificial float; it is characterized in that; by washing away at bed surface or the scour protection position is provided with artificial float; increase near the roughness of bed surface; to reduce the flow velocity of local current; reduce local current sand holding ability; thereby reach and avoid or reduce the purpose of washing away; artificial float is the bands of wear-resisting flexibility; be arranged on the nettle of flexible heelpiece net, the proportion of ribbon is lighter than water, when water body flows; ribbon drifts about downstream, and it is online that its lower end is fixed on heelpiece.
2. reducing and wash preventing method of artificial float according to claim 1 is characterized in that the proportion of ribbon is less than 1.
3. reducing and wash preventing method of artificial float according to claim 1 is characterized in that, ribbon spacing and ribbon length depend on flow intensity, and flow rate of water flow is high more, and the scouring capability of current is strong more, and then the ribbon spacing is more little, ribbon length is long more.
4. reducing and wash preventing method of artificial float according to claim 3 is characterized in that, the ribbon spacing is the width of 0.5-5 times of ribbon, and ribbon length is the doubly maximum degree of depth of washing away of 0.5-1.
5. according to claim 1 or 2 or 3 or 4 described reducing and wash preventing method of artificial float, it is characterized in that ribbon or adopt wear-resisting flexible cylinder to replace.
6. reducing and wash preventing method of artificial float according to claim 1 is characterized in that, the heelpiece net adopts flexible cable to work out, above mesh be divided into major network eye and time mesh, the major network eye is with the establishment of hawser bundle, inferior mesh is worked out with the cord bundle.
7. according to claim 1 or 6 described reducing and wash preventing method of artificial float, it is characterized in that, a heavy thing piece is set on each lattice point of heelpiece host mesh, the proportion of thing piece must be greater than 2, and proportion is the bigger the better, and prevents to be washed away by current on bed surface with fixing heelpiece net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029656 CN1746431A (en) | 2005-09-15 | 2005-09-15 | Reducing and wash preventing method of artificial float |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029656 CN1746431A (en) | 2005-09-15 | 2005-09-15 | Reducing and wash preventing method of artificial float |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746431A true CN1746431A (en) | 2006-03-15 |
Family
ID=36166112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510029656 Pending CN1746431A (en) | 2005-09-15 | 2005-09-15 | Reducing and wash preventing method of artificial float |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1746431A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127904A (en) * | 2011-01-31 | 2011-07-20 | 上海交通大学 | Modular reticular bedding and washing-out-preventing method using same |
| CN102561262A (en) * | 2011-12-16 | 2012-07-11 | 上海交通大学 | Anti-scouring device and method for modular artificial netlike beddings |
| CN109797708A (en) * | 2017-11-17 | 2019-05-24 | 彭大雄 | Flexibility subtracts can system |
| CN111424730A (en) * | 2020-03-18 | 2020-07-17 | 石家庄铁道大学 | Comb flow tooth device for resisting scouring of heavy-duty railway bridge pier column foundation |
| CN113718707A (en) * | 2021-09-23 | 2021-11-30 | 广西桂冠电力股份有限公司大化水力发电总厂 | Dam and method for preventing large drift from impacting dam |
-
2005
- 2005-09-15 CN CN 200510029656 patent/CN1746431A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127904A (en) * | 2011-01-31 | 2011-07-20 | 上海交通大学 | Modular reticular bedding and washing-out-preventing method using same |
| CN102561262A (en) * | 2011-12-16 | 2012-07-11 | 上海交通大学 | Anti-scouring device and method for modular artificial netlike beddings |
| CN109797708A (en) * | 2017-11-17 | 2019-05-24 | 彭大雄 | Flexibility subtracts can system |
| CN111424730A (en) * | 2020-03-18 | 2020-07-17 | 石家庄铁道大学 | Comb flow tooth device for resisting scouring of heavy-duty railway bridge pier column foundation |
| CN113718707A (en) * | 2021-09-23 | 2021-11-30 | 广西桂冠电力股份有限公司大化水力发电总厂 | Dam and method for preventing large drift from impacting dam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1318702C (en) | Installation for trapping sediment from riverbed and seabed promoting siltation and erosion protection | |
| CN1746431A (en) | Reducing and wash preventing method of artificial float | |
| CN102127904A (en) | Modular reticular bedding and washing-out-preventing method using same | |
| CN109626581A (en) | A kind of method of hydraulic reclamation silty sand and fine sand construction artificial swamp | |
| CN109914351A (en) | A kind of nuclear power plant's intake high intensity intercept net system | |
| CN206279494U (en) | A kind of silt coast artificial beach slows down the extraction mud pipe corridor system of argillization | |
| CN102677627B (en) | Flexible siltation-promoting scouring-preventing device and installation method thereof | |
| CN100570068C (en) | A kind of sea floor corrosion-proof and silt-promoting system and application thereof | |
| CN108203163A (en) | A kind of ecological management system suitable for high sediment concentration river | |
| CN1293288A (en) | Method for dedicated apparatus for harnessing rivers | |
| CN111392998A (en) | Submerged multifunctional ecological blanket for treating black and odorous bottom mud in river channel flow domain and use method thereof | |
| CN109868785A (en) | A kind of mixing dam body permeable ecology makes beach engineering | |
| CN201010880Y (en) | Seabed anti-erosion and silt promoting device | |
| CN214363265U (en) | Flexible protection system for promoting silt and making land near nature | |
| CN113987621A (en) | Design method of trash rack according to water resistance | |
| Lange et al. | The weser estuary | |
| CN2856164Y (en) | Sand blocking net | |
| CN102561262A (en) | Anti-scouring device and method for modular artificial netlike beddings | |
| CN2758332Y (en) | Sludge cleaner for river channel tubulent sand | |
| CN110747829B (en) | Snail blocking wall and oncomelania settling pond for hydraulic and hydroelectric engineering | |
| CN114718019A (en) | Flexible flow-limiting salty-resistance device and salty-resistance method | |
| CN209873706U (en) | Multifunctional breakwater suitable for high-sand-content sea area | |
| CN106522154A (en) | Mud pumping pipe gallery system used for reducing argillization of silt coast man-made beach | |
| CN207003395U (en) | A kind of floating sewage blocking structure | |
| CN201296917Y (en) | Strait-shaped deep-water tidal channel formed according to the 'two-way beam water effect' |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |