CN108914873A - Based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method - Google Patents
Based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method Download PDFInfo
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- CN108914873A CN108914873A CN201810827578.2A CN201810827578A CN108914873A CN 108914873 A CN108914873 A CN 108914873A CN 201810827578 A CN201810827578 A CN 201810827578A CN 108914873 A CN108914873 A CN 108914873A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Revetment (AREA)
Abstract
The present invention relates to water hydrologic survey fields, specifically based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method, carry out the solidification construction of section ecology to river or section runoff；In flood generating process, flow is obtained according to the relationship of the water level of section and flow, realizes flow measurement.It is stood on stream measurement section and buries pipe of concrete, pipe internal pore fills river gravel and forms tubular pole, and section upstream and downstream guarantees that measuring frequency section is stablized using ecological grid transitionality protection.There is tubular pole of the invention rigid antiscour to be unlikely to deform, and backfills gap using former river gravel, does not change tapered roughness；Meet ecology and controls river theory；Simple process, short time limit.
Description
Technical field
It is specifically a kind of to be suitable for medium or smallsized river, the survey of city section flow the present invention relates to water hydrologic survey field
Test the flow monitoring method of section curing technology.
Background technique
In recent years, it endangers caused by medium or smallsized river flood damage and increasingly weighs, casualties and economic loss are increasingly
Greatly.The method of China's river flood monitoring at present mainly has boat measurement, hydrometric cableway, bridge survey, buoy, slope-area method, water conservancy project to build
The methods of object flow measurement is built, there is flow measurement time length, low efficiency, automated job difficulty for these monitoring methods greatly, flow measurement environment
The arduous, drawbacks such as precision is low, personal safety does not ensure.So by being ground to large and medium-sized river Flood current measured technology
Study carefully, finds the freshwater monitoring method for being suitble to different river different sections, meet flood-control and drought relief, water resources development and utilization etc.
It needs, and then reaches and reduce field work intensity, guarantee flow measurement operating personnel safety, quickly, Hydrologic Information is accurately provided, into one
Step meets the purpose of work of flood prevention needs.
In natural river course, due to rising and overboard variation of channel erosion and deposition in the process, water level-discharge relation is complicated
Loop rating is rising and the overboard stage, the corresponding flow of same water level is different.If by gaging section into
The certain project treatment of row, gaging section is solidified, makes it that Scour and Accretion not occur, so that water level-flow of section part
Relation curve becomes single line by rope sling line, i.e., the corresponding flow of a certain water level is certain, in this way, only just by measurement water level
Calculation flow can be accurately looked into, to greatly improve flow measurement efficiency, improve flow measurement the degree of automation, ensure flow measurement personal safety.
It is less to solidify the correlative study carried out to section for China at present.Hydrological Bureau of Liaoning Province establishes physical model indoors,
The flow measurement experiment that discharges water is carried out, compared 4 kinds of section solidification schemes.Scheme 1 is one section of solidification, no bank；Scheme 2 is solidification three
It is a to have bank section, the high 5cm of bank；Scheme 3 is that solidification one has bank section, the high 2cm of bank；Scheme 4 is that solidification two has bank section, bank
High 3cm；Natural river course is as control.Solidify the wide 6cm of section, using red brick masonry, surface cement plaster.It is closed from water level-flow
It has been curve, Scour and Accretion, flow-shape variation etc. the comparative analysis superiority and inferiority of each scheme, the results showed that scheme 1, scheme 4
Being useful in middle high-water stage water level-discharge relation is single line, and the low water stage, there are still rope sling phenomenons, and each scheme exists not
With the siltation of degree, and depositing influences maximum to water level-discharge relation.Prototype experiment in large and medium-sized river shows conventional
Section curing process generally uses stone masonry or concrete, and cost is higher；Due to for rigid protection, when riverbed occur it is uneven heavy
When drop, mask is easy to crack, maintenance difficult.
Summary of the invention
Aiming at the defects existing in the prior art, the invention proposes a kind of new sections to solidify scheme, i.e.,
It is stood on stream measurement section and buries pipe of concrete, pipe internal pore fills river gravel and forms tubular pole, and section upstream and downstream is using ecology
The green transitional protection of shore pad of grid, to guarantee that measuring frequency section is stablized.
The present invention adopts the following technical scheme that：Based on the cured medium or smallsized river of gaging section ecology and city section flow measurement
Method includes the following steps：
The solidification construction of section ecology is carried out to river or section runoff；
In flood generating process, flow is obtained according to the relationship of the water level of section and flow, realizes flow measurement.
It is described that river or the progress section ecology solidification construction of section runoff are included the following steps：
(1) the mainstream section in river gaging section cross section excavates foundation trench, the vertical embedding pipe of concrete in foundation trench, correction
Position, and backfill sandy gravel；
(2) river cross section is flattened, pads basal plane as the green shore of ecological grid, and be laid with needle punched non-woven fabrics；
(3) it is laid with the green shore pad of ecological grid on needle punched non-woven fabrics, guarantees the green shore pad upper surface of ecological grid and coagulation
Native tube top end flushes.
The mainstream section in river gaging section cross section excavates foundation trench, vertical embedding pipe of concrete, school in foundation trench
Positive position, and sandy gravel is backfilled, specially：
Multiple pipe of concretes are set in the foundation trench of river or section runoff, arrange it simultaneously along the direction vertical with water flow
It mutually abuts, the axis of pipe of concrete is vertical with basal plane；
It is backfilled in upstream side, the downstream side of pipe of concrete；
It back-filling in layers sandy gravel and is tamped in pipe of concrete and outside pipe of concrete, makes filled out sandy gravel and pipe of concrete
Upper surface it is coplanar.
Multiple rows of pipe of concrete is set in the foundation trench of river or section runoff, and the side pipe of concrete closest to upstream arranges
Length longest.
The multiple pipe of concrete size is identical.
The green shore pad upper surface of ecology grid constitutes plane with the upper surface for inserting the pipe of concrete after sandy gravel.
The ecological green shore of grid of the laying, which is padded, is specially：
Multiple ecological grid mesh sheet are assembled into green shore with binding wire to pad；The binding wire material and ecological grid material phase
Together；
Green shore is constituted at interval of binding at set distance in mesh sheet joint and pads net group, and the mesh sheet that makes to connect is not mutually mobile；
The quadrangle up and down of adjacent green shore pad net group is bound respectively；The wire up and down or broken line of adjacent green shore pad net group, at interval of setting away from
From binding；Then every square meter binds several places to the mesh sheet faying face of adjacent green shore pad net group.
It is described flow is obtained according to the water level of section and the relationship of flow to include the following steps：
Water level is obtained by the water-level gauge being arranged in the foundation trench of river or section runoff, is obtained according to the relationship of water level and flow
To real-time traffic.
Water level is obtained by indicator water gage and camera.
The present invention has the following advantages and beneficial effects：
There is tubular pole rigid antiscour to be unlikely to deform, and backfills gap using former river gravel, does not change tapered roughness；It is raw
State grid has that anticorrosive function is strong, resist the ability of extreme natural environment strong, whole flexibility and stability in configuration aspects
Well, the advantages that being able to bear by large-scale deformation without avalanche；Ecological grid in terms of ecology have permeable breathable it is good, can
Effectively mitigate the abrasion of current scour, has preferable energy dissipating effect, is conducive to that plant growth, meeting ecology, to control river theory etc. excellent
Point；This programme construction is succinct, and installation cost is low, short time limit, simple process.
Detailed description of the invention
Fig. 1 is ecology solidification section integral layout figure.
Wherein, 1 river bottom protection is padded for the ecological green shore of grid；2 be pipe of concrete；3 be backfill sandy gravel in pipe of concrete；4 be water
Position frame；5 be water gauge.
Fig. 2 is 1 figure of section of Fig. 1.
Wherein, 1 river bottom protection is padded for the ecological green shore of grid；6 be ecological net cage；7 be chopped fiber needle-punched non-woven fabrics.
Fig. 3 is 2 figure of section of Fig. 1.
Wherein, 1 river bottom protection is padded for the ecological green shore of grid；2 be pipe of concrete；7 be chopped fiber needle-punched non-woven fabrics.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
1, it is required according to Fig. 1, Fig. 2, Fig. 3, in river, main flow area excavates foundation trench；It is endways to place multiple rows of pipe of concrete, make solid
Section after change has stronger impact resilience, pipe of concrete internal diameter 1m, outer diameter 1.15m, height 3m；Adjust pipe of concrete horizontal position
It sets, makes tube body contact arrangement, and make multiple pipe of concretes in length and breadth all point-blank；Tube body posture is corrected, keeps tube body vertical；
Sandy gravel is backfilled in upstream and downstream foundation trench, stablizes tube body；The back-filling in layers original riverbed sandy gravel in pipe of concrete, every backfill 0.5m
That is then hand compaction backfills next layer and tamps, flushes sandy gravel with pipe of concrete upper end；In Concrete tube sections
Ecological net cage is arranged in surrounding, and ecological net cage thickness is larger, is 3m, identical as pipe of concrete height, against the week of Concrete tube sections
Setting is enclosed, stabilizing concrete pipe can be played the role of.
2, several places of water gauge are buried according to specific requirement, on the right side of river, at water level frame stake 1.Water gauge is located in pipe of concrete,
Then C20 plain concrete is perfused.The basis of water level frame stake is deposited reinforced concrete pile, and top is welded steel structure.Steel member
Galvanized anticorrosive must be carried out before construction.Lightning rod earthing or grounding means presses national standard《Code for design of lightning protection of buildings》It is required that embedded.
3, according to design requirement, ecological grid basal plane is flattened, wedge angle stone is rejected, is compacted basal plane, is laid with 400g/m2Short fibre
Needle punched non-woven fabrics, laying should be in strict accordance with《Technical code for application of geosynthetics》GB/T50290-2014 construction, overlap joint are wide
Degree should be not less than 0.5m.
4, ecological grid construction：
1) qualified green shore is chosen by design requirement to pad：
Ecological grid river bottom protection having a size of 3m × 1m × 0.3m, ecological net cage having a size of 1m × 1m × 3m, mesh specification be D ×
H is 80 × 100mm.
Cable is zinc-coated wire, and tensile strength of wire is not less than 350MPa, and elongation percentage must not be lower than 10%.Mesh wire diameter φ
2.2mm, tolerance are ± 0.06mm, and side silk diameter phi 2.7mm, tolerance is ± 0.08mm, binding wire diameter phi 2.2mm, and tolerance is
±0.06mm.The minimum coating weight of steel wire：φ 2.2mm galvanizing layer weight is greater than 230g/m2, φ 2.7mm coating weight is greater than
245g/m2.Pad slope protection (bottom) dimensional tolerance in green shore：Length (mm) tolerance is ± 5%, and width (mm) tolerance is ± 5%, height
(mm) tolerance is ± 5%；D tolerance is -4%~+16%.Twisting length >=50mm.
2) assembling of ecological grid mesh sheet：Binding wire must be the steel wire with cable same material.Mesh sheet joint every
Together, bifilar and hinge is tight for binding at 20~25cm；
Ecological grid has certain thickness, so there are four angles between two neighboring.It respectively ties up the quadrangle up and down of adjacent net group
It pricks together；The wire up and down or broken line of adjacent net group, together at interval of 20~25cm binding；The mesh sheet faying face of adjacent net group is then
At every square meter binding 2.
3) rockfilling in ecological grid require durability it is good, it is non-friable, without weathering sign, partial size is between 1.5~2.0 times
Hinge center line away from, gradation is uniform, density be not less than 26KN/m3, whole porosity of rockfilling should be less than 30%；When filling up, stone
Block suitably exceeds high 3~5cm of protection pad or so, conveniently adapts to settle.
5, the measurement of section flow
After the solidification construction of section ecology is completed, in different magnitude of flood generating process, using traditional survey of paddling
Test, exam on the top of the Bridge, cableway test, survey boat measurement test, ADCP test etc. means measuring flow, while 4 in acquisition instruction book attached drawing 1 at
The waterlevel data that the indicator water gage installed on water gauge and water level frame stake is monitored, utilizes the water of the above-mentioned data calibration section
Position-discharge relation curve；In later runoff test, it can directly pass through water gauge and indicator water at 4 in Figure of description 1
Monitored waterlevel data is counted, the level-flow relation curve made according to rate looks into the corresponding flow of calculation, reaches the mesh of quick flow measurement
's.Also real time water level can be obtained by indicator water gage remote auto, according to water level-discharge relation, realize open channel function.
Or Real Time Hydrologic situation in river is obtained by right bank camera, situation is test in live streaming river.
Claims (9)
1. based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method, it is characterised in that including following step
Suddenly：
The solidification construction of section ecology is carried out to river or section runoff；
In flood generating process, flow is obtained according to the relationship of the water level of section and flow, realizes flow measurement.
2. according to claim 1 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
It is characterized in that, described include the following steps river or the progress section ecology solidification construction of section runoff：
(1) the mainstream section in river gaging section cross section excavates foundation trench, vertical embedding pipe of concrete, correction bit in foundation trench
It sets, and backfills sandy gravel；
(2) river cross section is flattened, pads basal plane as the green shore of ecological grid, and be laid with needle punched non-woven fabrics；
(3) it is laid with the green shore pad of ecological grid on needle punched non-woven fabrics, guarantees the green shore pad upper surface of ecological grid and pipe of concrete
Top flushes.
3. according to claim 1 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
It is characterized in that, the mainstream section excavation foundation trench in river gaging section cross section, the vertical embedding pipe of concrete in foundation trench,
Position is corrected, and backfills sandy gravel, specially：
Multiple pipe of concretes are set in the foundation trench of river or section runoff, make it along vertical with water flow direction arrangement and mutual
It abuts, the axis of pipe of concrete is vertical with basal plane；
It is backfilled in upstream side, the downstream side of pipe of concrete；
It back-filling in layers sandy gravel and is tamped in pipe of concrete and outside pipe of concrete, makes the upper of filled out sandy gravel and pipe of concrete
End face is coplanar.
4. according to claim 3 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
It is characterized in that, multiple rows of pipe of concrete is arranged in the foundation trench of river or section runoff, closest to the side pipe of concrete of upstream
Spread length longest.
5. according to claim 3 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
It is characterized in that, the multiple pipe of concrete size is identical.
6. according to claim 3 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
It is characterized in that, the green shore pad upper surface of ecology grid constitutes plane with the upper surface for inserting the pipe of concrete after sandy gravel.
7. according to claim 3 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
It is characterized in that, the green shore pad of the ecological grid of the laying is specially：
Multiple ecological grid mesh sheet are assembled into green shore with binding wire to pad；The binding wire material is identical as ecological grid material；
Green shore is constituted at interval of binding at set distance in mesh sheet joint and pads net group, and the mesh sheet that makes to connect is not mutually mobile；It is adjacent
The quadrangle up and down of green shore pad net group is bound respectively；The wire up and down or broken line of adjacent green shore pad net group, are tied up at interval of set distance
It pricks；Then every square meter binds several places to the mesh sheet faying face of adjacent green shore pad net group.
8. according to claim 1 be based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method,
Flow is obtained according to the water level of section and the relationship of flow include the following steps it is characterized in that, described：
Water level is obtained by the water-level gauge being arranged in the foundation trench of river or section runoff, reality is obtained according to the relationship of water level and flow
Shi Liuliang.
9. according to claim 8 based on medium or smallsized river, the cured flow measurement side of city section discharge measurement section ecology
Method, which is characterized in that water level is obtained by indicator water gage and camera.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810827578.2A CN108914873B (en) | 2018-07-25 | 2018-07-25 | Based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method |
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| CN201810827578.2A CN108914873B (en) | 2018-07-25 | 2018-07-25 | Based on the cured medium or smallsized river of gaging section ecology and city section flow measurement method |
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| CN108914873A true CN108914873A (en) | 2018-11-30 |
| CN108914873B CN108914873B (en) | 2019-05-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060636A (en) * | 2022-06-17 | 2022-09-16 | 山东大学 | Method for testing gap rate of rock-fill roadbed |
| CN115467290A (en) * | 2022-10-25 | 2022-12-13 | 成都市市政工程设计研究院有限公司 | Ecological bed fixing piece, testing device and testing method thereof |
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| KR100925886B1 (en) * | 2009-04-29 | 2009-11-11 | 대한민국 | Ecotype Block Devris Barrier |
| CN102756625A (en) * | 2011-03-29 | 2012-10-31 | 郑鹏 | Slurry and flood current overhead-hoisting rescue method and amphibious medical ambulance |
| CN105678984A (en) * | 2015-12-30 | 2016-06-15 | 四川大学 | Burst disaster warning system establishing method for barrier lake in data-lacking-area |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060636A (en) * | 2022-06-17 | 2022-09-16 | 山东大学 | Method for testing gap rate of rock-fill roadbed |
| CN115467290A (en) * | 2022-10-25 | 2022-12-13 | 成都市市政工程设计研究院有限公司 | Ecological bed fixing piece, testing device and testing method thereof |
| CN115467290B (en) * | 2022-10-25 | 2023-09-01 | 成都市市政工程设计研究院有限公司 | Test method of ecological solid bed part test device |
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| CN108914873B (en) | 2019-05-21 |
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