CN104452705B - A kind of terrace-type sloping upland multifunctional ecological sewerage cutting down nitrogen and phosphorus load - Google Patents
A kind of terrace-type sloping upland multifunctional ecological sewerage cutting down nitrogen and phosphorus load Download PDFInfo
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Abstract
The present invention relates to a kind of terrace-type sloping upland multifunctional ecological sewerage cutting down nitrogen and phosphorus load, this system includes that Demonstration for Ecological Sanitation indulges trunk canal and the horizontal Zhigou of Demonstration for Ecological Sanitation, described Demonstration for Ecological Sanitation is spaced 10m and arranges the ecology bag downflow weir lowering flow velocity, retaining silt in indulging trunk canal, erosion-resistant vegetation is planted in its ditch, in the horizontal Zhigou of Demonstration for Ecological Sanitation, interval 15 ~ 20m arranges the ecology bag infiltration wall filtering suspended impurity, adsorption of nitrogen phosphorus, in its ditch, plantation is prone to the vegetation of absorbed nitrogen phosphorus, and Demonstration for Ecological Sanitation is indulged and arranged downflow weir between trunk canal and the horizontal Zhigou of Demonstration for Ecological Sanitation.The present invention by changing the direction of a stream of water, reduce water flow dynamic energy, it is achieved intercept with adsorption of nitrogen phosphorus and silt, purify water, draining and water storage function, thus alleviate downstream water nitrogen and phosphorus pollution, strengthen nitrogen phosphorus and recycle, improve soil water-reataining fertilizer-keeping, it is achieved increase income.
Description
Technical field
The invention belongs to sloping upland improvement and liquid manure keeps system regions, be specifically related to a kind of terraced fields cutting down nitrogen and phosphorus load
Formula sloping upland multifunctional ecological sewerage.
Background technology
Sloping upland is because of its special orographic condition and the impact of artificial farming, and under rainfall especially Rainfall Condition, slope is ploughed
The nutrients such as the nitrogen phosphorus in ground and top layer mellow soil are easily taken away by runoff, cause downstream water nitrogen and phosphorus pollution and Sediment Siltation, simultaneously
Cause the decline of soil depletion, soil fertility, crop production reduction；And during not rainfall, owing to sloping upland water retention property is poor, easily cause again dry
Drought, crop failure, peasant's reduction of income.Thus, sloping upland, under conditions of not implementing effectively to protect, easily makes it be absorbed in a kind of soil and invades
Erosion increases the weight of, soil is barrenr with arid, crop production reduction, downstream Hu Ku alluvial and the vicious cycle polluted, and then under being formed
Swimming body nitrogen and phosphorus pollution aggravation, the situation that soil depletion is more prominent with arid.According to statistics, sloping upland is Chinese cultivated land
Important component part, its soil erosion amount accounts for the 50% ~ 80% of total number of dropouts, is main source and the water body nitrogen phosphorus of Hu Ku alluvial
The significant contribution person of load.
In the prior art, for reduce sloping upland nitrogen and phosphorus loss, strengthening nitrogen phosphorus recycle, realize fertilizer conservation, water conservation with
Alleviate the multinomial target such as downstream water nitrogen and phosphorus pollution, minimizing Sediment Siltation to tend not to take into account, Chinese patent literature CN
102986328 A reduce domatic pollutant by the technological means of using controlling agent and run off and water and soil balance, but are made
The chemicals such as soil conditioner, water-retaining agent and plant transpiration resistant agent be there is potential impact in environment;Chinese patent
Document CN 102177776 A designs domatic interval according to Rill Erosion generation critical plane method and builds along equal pitch contour accordingly
Ladder bank alleviates soil erosion, but can not realize recycling of water conservation and nitrogen phosphorus；Or use Chinese patent literature CN
102239760 A utilize crisscross traverse furrow, suitable hillside fields ditch and gutter etc. to retain and row leads runoff, reduce runoff erosion,
Increase precipitation infiltration, but after rainfall, in addition to the rainwater infiltration of early stage, all outer row of remaining runoff, it is impossible to effectively retain nitrogen phosphorus, also
Can not realize water conservation to increase lasting drought-resistant ability, and quantities is relatively big, land utilization ratio is little.
Summary of the invention
The problem existed for prior art, the invention provides a kind of many merits of terrace-type sloping upland cutting down nitrogen and phosphorus load
Can ecological canal system, this system can reduce sloping upland nitrogen and phosphorus loss, strengthen the recycling of nitrogen phosphorus, water conservation, fertilizer conservation and subtract
Light downstream water nitrogen and phosphorus pollution, water body alluvial and quantities of the present invention are little.
The technical scheme that the present invention is used for achieving the above object is:
A kind of sloping upland multifunctional ecological sewerage cutting down nitrogen and phosphorus load, its objective is to be achieved in that: from arable land
Top, slope is indulged trunk canal to slope angle excavation Demonstration for Ecological Sanitation and excavates the horizontal Zhigou of Demonstration for Ecological Sanitation along equal pitch contour direction, and described Demonstration for Ecological Sanitation is indulged
Being connected by downflow weir between the Zhigou horizontal with Demonstration for Ecological Sanitation of trunk canal, the top of downflow weir is with the dam crest distance of ecological transverse drainage Zhigou
For 10-12cm.
Described Demonstration for Ecological Sanitation indulges the cross section size in trunk canal and corresponding domatic designing and arranging discharge (designing and arranging current
Amount is to determine according to necessarily designing rainfall intensity, rainfall duration and catchment area) relevant, the section in vertical trunk canal be semicircle,
Sectional Area is the designing and arranging discharge ratio with flow velocity, blows back into farmland for the runoff avoiding remittance Demonstration for Ecological Sanitation to indulge trunk canal
In, it is ensured that Demonstration for Ecological Sanitation is indulged designing and arranging discharge domatic corresponding to trunk canal and is drained smoothly from trunk canal, and Demonstration for Ecological Sanitation indulges trunk canal
Effectively drainage section be from Demonstration for Ecological Sanitation indulge the downflow weir top between trunk canal and the horizontal Zhigou of Demonstration for Ecological Sanitation count to institute at the bottom of canal right
The cross sectional area answered, in canal, the plantation resistance to soil and water conservation effect lean, that well developed root system, seed are less, plant is shorter of drought resisting is good
Ground vegetation, in canal, interval 10m rational height is that Demonstration for Ecological Sanitation indulges the adsorption of nitrogen phosphorus of trunk canal canal deep 1/4, the ecology bag of Littoral Barrier
Downflow weir, its ecology bag bag selects the material with features such as nontoxic, aging resistance, loads containing drought-enduring waterlogging-resistant vegetation kind in bag
The soil of son.In the case of condition meets, the seed in bag can germinating growth.This design can increase domatic corrosion resistance
Silt and can be retained further, reduce the discharge of silt and nitrogen phosphorus.
The cross section size of the horizontal Zhigou of described Demonstration for Ecological Sanitation and design rainfall intensity and to retain early-stage rainwater volume relevant,
The section of horizontal Zhigou is trapezoidal, and is to ensure effectively catching Initial Runoff amount in the horizontal Zhigou of Demonstration for Ecological Sanitation, its effective drainage section
It is to indulge the downflow weir top between trunk canal and the horizontal Zhigou of Demonstration for Ecological Sanitation from Demonstration for Ecological Sanitation to count to the face, transverse section corresponding to bottom of trench
Long-pending.Its interval is designed according to Rill Erosion generation critical plane method, and in ditch, interval 15 ~ 20m arranges filtration suspended impurity, absorption
The ecology bag infiltration wall of nitrogen phosphorus, height is ecological transverse drainage Zhigou ditch depth the 1/2 of ecology bag infiltration wall, its ecology bag bag selects
Selecting the material with features such as nontoxic, aging resistance, that plants in loading easy adsorption of nitrogen phosphorus and permeable sandstone, its ditch in bag is prone to
Absorbed nitrogen phosphorus, the waterlogging resistance to lean vegetation of drought resisting.
The horizontal Zhigou of described Demonstration for Ecological Sanitation indulges the side in trunk canal or its both sides set respectively according to orographic condition at Demonstration for Ecological Sanitation
Putting, the interval of the horizontal Zhigou of Demonstration for Ecological Sanitation is designed according to Rill Erosion generation critical plane method, and arranges gradient i=0.003, slope
Trunk canal is indulged to Demonstration for Ecological Sanitation.
Rainfall runoff is the major driving factor of nitrogen and phosphorus loss in sloping upland.In rainfall kinetic energy and the effect of runoff corrosion
Under, the nutrient substance such as the nitrogen phosphorus in sloping upland migrates to downstream water with runoff and silt, and therefore, runoff and silt are to carry nitrogen
The main carriers of phosphorus, especially silt are easier to adsorption of nitrogen phosphorus.Additionally, show according to sloping upland rainfall runoff simulation result of the test
Show, under the conditions of different gradient, the material such as nitrogen, phosphorus in first 30 minutes of rainfall runoff accumulative migration amount more than 70%, sticky content
In the runoff and sediment of front 10min, it is all higher than 10min subsequently and remaining time period thereof, illustrates under the conditions of different gradient,
Sloping upland has obvious heavy rain First Flush Effect.Therefore, the strengthening disposal to sloping upland runoff Yu silt, the especially initial stage
Runoff and the effective of silt manage and dispose, and can recycle reduction water body nitrogen and phosphorus load, reinforcement nitrogen phosphorus and reduce Hu Ku silt
Amass and play an important role.The present invention follows material ecology circulation and sustainable use theory, uses sloping upland heavy rain first flush
Rule and continuously amount of flow rule, and according to the multi-functional lobby Ecology ditch of Rill Erosion generation critical plane method design-build
Canal, ecology bag downflow weir, ecology bag infiltration in retaining and store Initial Runoff by the horizontal Zhigou of Demonstration for Ecological Sanitation and utilize irrigation canals and ditches
The multiple measures such as the downflow weir between wall and irrigation canals and ditches, change the direction of a stream of water, and cut down water body kinetic energy, promote sedimentation, thus can
Effectively retain, adsorption of nitrogen phosphorus and silt, and utilize the vegetation of plantation in ditch to carry out further absorbed nitrogen phosphorus, alleviate downstream water
Sediment Siltation and nitrogen and phosphorus pollution.
The silt that ecology bag downflow weir is intercepted and the mud silt deposited in the horizontal Zhigou of Demonstration for Ecological Sanitation, Ke Yiyi
Year is the cycle, after autumn end irrigation canals and ditches implants is gathered in, using the mud silt of the nutrients such as a large amount of nitrogen phosphorus of absorption as fertilizer again
Resigning from office and returning home, this purpose is to ensure that runoff is retained by following time irrigation canals and ditches to lead function with row, it is achieved while irrigation canals and ditches sustainable use,
Ensure the recycling of nitrogen phosphorus, strengthen soil fertility.
The key property of the present invention is that Demonstration for Ecological Sanitation is indulged and is connected by downflow weir between the Zhigou horizontal with Demonstration for Ecological Sanitation of trunk canal.Just
First phase runoff comes together in the horizontal Zhigou of Demonstration for Ecological Sanitation, when the water level of the horizontal Zhigou of Demonstration for Ecological Sanitation indulges trunk canal and life higher than Demonstration for Ecological Sanitation
During the downflow weir arranged between state transverse drainage Zhigou, the runoff in the horizontal Zhigou of Demonstration for Ecological Sanitation will be compiled in Demonstration for Ecological Sanitation and indulge trunk canal, work as fall
After rain stops, in part rainwater is still stranded in the horizontal Zhigou of Demonstration for Ecological Sanitation and slowly permeating and feed field-crop water, can effectively increase
The lasting drought-resistant ability of big non-duration of raining sloping upland, improves soil moisture content and crop yield.
Advantages of the present invention:
1. active adsorption, retain nitrogen phosphorus and silt, cut down nitrogen phosphorus discharge.
2. strengthening nitrogen phosphorus recycles, and fertilizer conservation effect highlights, it is possible to reduce the erosion of top layer mellow soil, strengthens soil fertility,
Realize effect of agricultural produce, increasing peasant income.
3. water conservation effect is obvious.
Accompanying drawing explanation
Fig. 1 is the floor map of the present invention.
Fig. 2 is B-B profile and the graph of a relation therebetween in the horizontal Zhigou of Demonstration for Ecological Sanitation and vertical trunk canal in Fig. 1.
Fig. 3 is the A-A profile of the horizontal Zhigou of Demonstration for Ecological Sanitation in Fig. 1.
In figure: 1. Demonstration for Ecological Sanitation indulges trunk canal, the 2. horizontal Zhigou of Demonstration for Ecological Sanitation, 3. ecology bag downflow weir, 4. trunk canal and Zhigou
Between downflow weir, 5. ecology bag infiltration wall, 6. resistance to lean, well developed root system, seed are less, plant the is shorter soil and water conservation effect of drought resisting
Vegetation well, the 7. vegetation of easy absorbed nitrogen phosphorus.
Detailed description of the invention
Below, in conjunction with accompanying drawing, the present invention will be further described.
A kind of sloping upland multifunctional ecological sewerage cutting down nitrogen and phosphorus load that the present invention provides specifically includes that from arable land
Trunk canal 1 is indulged to slope toe excavation Demonstration for Ecological Sanitation in top, slope, and described Demonstration for Ecological Sanitation indulges the cross section size in trunk canal 1 with corresponding domatic
Designing and arranging discharge is relevant, and the runoff for avoiding remittance Demonstration for Ecological Sanitation to indulge trunk canal 1 blows back in farmland, it is ensured that Demonstration for Ecological Sanitation is indulged
Designing and arranging discharge domatic corresponding to trunk canal 1 is drained smoothly from trunk canal, Demonstration for Ecological Sanitation indulge effective drainage section in trunk canal 1 be from
The cross sectional area corresponding at the bottom of the canal indulging trunk canal 1 to Demonstration for Ecological Sanitation is counted at the top of downflow weir 4.In canal plantation drought resisting resistance to lean,
Soil and water conservation effect vegetation 6 well that well developed root system, seed are less, plant is shorter, in canal, interval about 10m arranges to be about and does
The adsorption of nitrogen phosphorus of the canal degree of depth 1/4, the ecology bag downflow weir 3 of Littoral Barrier, its ecology bag bag selects have nontoxic, aging resistance etc.
The material of feature, loads the soil containing drought-enduring waterlogging-resistant vegetation seed in bag, in the case of condition meets, the seed in bag can
Germinating growth.This design can increase domatic erosion-resisting characteristics and retain silt further, reduces the row of silt and nitrogen phosphorus
Put.
Demonstration for Ecological Sanitation indulges the layout in trunk canal 1, can arrange one according to orographic condition in one end of the horizontal Zhigou of Demonstration for Ecological Sanitation 2
Or its two ends are respectively provided with.
The horizontal Zhigou of Demonstration for Ecological Sanitation 2 excavates along equal pitch contour direction, its cross section size and design rainfall intensity and at the beginning of retaining
Phase rainwater volume is relevant, and for ensureing effectively catching Initial Runoff amount in the horizontal Zhigou of Demonstration for Ecological Sanitation 2, its effective drainage section be from
The cross sectional area corresponding to ditch top that the top of downflow weir 4 is counted to the horizontal Zhigou of Demonstration for Ecological Sanitation 2.The horizontal Zhigou of Demonstration for Ecological Sanitation 2
Being spaced and design according to Rill Erosion generation critical plane method, its gradient i is between 0.002 ~ 0.003, and slope aspect Demonstration for Ecological Sanitation is vertical dry
Canal 1, in ditch, interval 15 ~ 20m arranges the ecology bag infiltration wall 5 filtering suspended impurity, adsorption of nitrogen phosphorus, and its height is about Demonstration for Ecological Sanitation
The ditch depth 1/2 of horizontal Zhigou 2, its ecology bag bag selects the material with features such as nontoxic, aging resistance, loads easy adsorption of nitrogen in bag
Phosphorus and permeable sandstone, Qi Gou slope and bottom of trench plantation are prone to absorbed nitrogen phosphorus, the waterlogging resistance to lean vegetation 7 of drought resisting.This design can be
Under the conditions of different raininess, farthest strengthen retaining and adsorbing of nitrogen phosphorus, reduce the discharge of nitrogen phosphorus, improve the water conservation bar in hillside fields
Part, it is achieved the sustainable utilization of rainwater.
Described Demonstration for Ecological Sanitation is indulged and is connected by downflow weir 4 between trunk canal 1 Zhigou horizontal with Demonstration for Ecological Sanitation 2.Domatic initial stage footpath
First stream come together in the horizontal Zhigou of Demonstration for Ecological Sanitation 2, and the ecology bag that nitrogen phosphorus therein, silt and suspended material are arranged layer by layer permeates
Wall 5 and vegetation 7 intercept, adsorb and filter, when the water level of the horizontal Zhigou of Demonstration for Ecological Sanitation 2 indulges trunk canal 1 and ecological row higher than Demonstration for Ecological Sanitation
During the downflow weir 4 arranged between the horizontal Zhigou of water 2, the runoff in the horizontal Zhigou of Demonstration for Ecological Sanitation will cover downflow weir 4, be compiled in Demonstration for Ecological Sanitation and indulge
Trunk canal is discharged；After rainfall stops, due to the existence of downflow weir 4, make horizontal at Demonstration for Ecological Sanitation for savings less than the rainwater of downflow weir 4
In Zhigou, in ensureing following non-duration of raining with this, the lasting of rainwater permeates supply field-crop water, and then can effectively increase
The lasting drought-resistant ability of non-duration of raining sloping upland.
The silt that ecology bag downflow weir 3 is intercepted and the mud silt deposited in the horizontal Zhigou of Demonstration for Ecological Sanitation 2, permissible
Within 1 year, it is the cycle, after autumn end ditch implants is gathered in, the silt adsorbing the nutrients such as a large amount of nitrogen phosphorus is resigned from office and return home again.
Embodiment 1
The present embodiment selected areas is sloping upland trial zone, Han Ku upstream, and upper steep lower slow, the top gradient is 10 ~ 15 degree,
The bottom gradient is 5 ~ 7 degree, and slope aspect is towards east.Study area is divided into symmetrical plot, north and south two by the longitudinal arterial highway in this district, and length of grade is equal
For 60m, wide 100m, wherein, backlands block builds according to the method for designing of ecological canal, and plot, south uses conventional tillage system reform to do
Comparison, plant is the local medical material such as Flos Lonicerae, Radix Paeoniae.
The rainfall intensity of study area, runoff coefficient uses 0.2, TMThe reproduction of design rainfall
Phase, year；T---ground inlet time, takes 15min；The catchment area in two plot is 0.6hm2, according to early-stage Study, initial stage footpath
Flow takes the run-off corresponding to rainfall duration 30min.Study area different reoccurrence rainfall intensity is with trunk canal outlet run-off such as
Shown in table 1.
Table 1: study area different reoccurrence rainfall intensity exports run-off with trunk canal
1. Demonstration for Ecological Sanitation indulges the structure in trunk canal
Indulging trunk canal near side, arable land from the draining on top, slope to slope toe excavation along arterial highway, study area, its effective cross section is big
Little export run-off design construction according to repetition period of rainfall in table 1 and trunk canal.By flow velocity in canal according to turf open channel flow velocity 1.6m/
S calculates, 100 years return periods, and corresponding run-off is 0.69m3/ s, its effective transverse drainage cross-sectional area is then 0.43m2, owing to going out
The existing return period is that the probability of 100 years is less, so, from economy, quantities size and security consideration, its effective drainage section
Area takes 0.40m2Disclosure satisfy that drainage requirement.It addition, according to place size and flow, flow rates demand, set section width about
1.20m, available depth 0.50m add downflow weir (Demonstration for Ecological Sanitation is indulged between trunk canal and the horizontal Zhigou of Demonstration for Ecological Sanitation) weir crest with ecological
Distance 0.12 m between the dam crest in trunk canal is indulged in draining, and total canal is 0.62m deeply；Plantation drought resisting resistance to lean, well developed root system, kind in canal
The bermuda grass that son soil and water conservation effect less, that plant is shorter is good, in canal, interval 10m arranges the interception mud being about 15cm height
Husky ecology bag downflow weir, its ecology bag bag selects material--the polypropylene with features such as nontoxic, aging resistance, loads in bag
Soil containing drought-enduring waterlogging-resistant bermuda grass seed.
2. the structure of the horizontal Zhigou of Demonstration for Ecological Sanitation
Result of the test according to Rill Erosion generation critical plane method and the orographic condition in test runoff district, from top, slope to
Toe builds 5 horizontal Zhigou of Demonstration for Ecological Sanitation along equal pitch contour trend, and spacing is 9m, 9m, 12m, 12m, 13m respectively, thus by whole
Plot is divided into 5 Small burden, named ditch one, ditch two, ditch three, ditch four, ditch five, and different irrigation canals and ditches are retained required for Initial Runoff amount
Volume (unit: m3) as shown in table 2.
Table 2: the volume unit of Initial Runoff amount retained by each irrigation canals and ditches of different reoccurrence: (m3)
From table 2 it can be seen that the Initial Runoff volume that different irrigation canals and ditches need to be retained is different, but from economy, quantities size
And security consideration, determine that the volume size of the horizontal Zhigou of Demonstration for Ecological Sanitation is 25m3, due to a length of 100m of ditch, accordingly, its
Ditch water-retention plane of structure area is defined as 0.25m2, and according to the characteristic such as thickness of soil, terrain slope, determine ditch top width 0.9m, bottom of trench
Wide 0.5m, effective ditch depth 0.38m add downflow weir (Demonstration for Ecological Sanitation is indulged between trunk canal and the horizontal Zhigou of Demonstration for Ecological Sanitation) weir crest and life
Distance 0.12 m between the ditch top of state transverse drainage Zhigou, total ditch depth is 0.50m；In ditch, plantation is prone to absorbed nitrogen phosphorus, drought resisting
Waterlogging resistance to lean vegetation Rhizoma Acori Graminei, in its ditch, interval 18m arranges the ecology bag infiltration wall filtering suspended impurity, adsorption of nitrogen phosphorus,
The height of ecology bag infiltration wall is about 25cm, and its ecology bag bag selects the material poly-third with features such as nontoxic, aging resistance
Alkene, loads easy adsorption of nitrogen phosphorus and permeable sandstone in bag.
3. Demonstration for Ecological Sanitation is indulged and is connected with downflow weir between the Zhigou horizontal with Demonstration for Ecological Sanitation of trunk canal, and the distance from top of downflow weir is ecological
Trunk canal dam crest 10 ~ 12cm is indulged in draining.
4. the soil of excavation ecological canal is positioned in respective Small burden for the purpose of reducing disused arable land, can build
While irrigation canals and ditches, weaken eating condition, reduce Soil erosion.
Auxiliary contour planting pattern in the most each Small burden.
6. being collected by the runoff in exit, plot, north and south two, Kuai Yunan plot, backlands is compared, the minimizing of nitrogen discharge and phosphorus discharge
Amount reaches 69.2% and 61.5%, subtracts husky benefit and reaches 84.3%, and due to backlands block obvious water conservation fertilizer conservation benefit, medical material increases
Produce about 11.6%.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not limited by embodiment
System, the change made, modifies, combines, substitutes, simplifies and all should be under other any spirit without departing from the present invention and principle
Equivalence substitute mode, within being included in protection scope of the present invention.
Claims (6)
1. cut down a terrace-type sloping upland multifunctional ecological sewerage for nitrogen and phosphorus load, indulge trunk canal (1) including Demonstration for Ecological Sanitation
Zhigou horizontal with Demonstration for Ecological Sanitation (2), it is characterised in that Demonstration for Ecological Sanitation indulges trunk canal (1), the section in vertical trunk canal is semicircle, every in canal
Every 10m, ecology bag downflow weir (3) is set, and resistance to lean, well developed root system, seed are less, plant the is shorter water and soil of plantation drought resisting in canal
Keep advantageously vegetation (6)；The horizontal Zhigou of Demonstration for Ecological Sanitation (2), the section of horizontal Zhigou is trapezoidal, arranges every 15 ~ 20m in ditch
Planting the vegetation (7) of easy absorbed nitrogen phosphorus in ecology bag infiltration wall (5) and ditch, it is horizontal with each Demonstration for Ecological Sanitation that Demonstration for Ecological Sanitation indulges trunk canal (1)
Zhigou (2) is connected by downflow weir (4)；
Dam crest or the dam crest distance of the horizontal Zhigou of Demonstration for Ecological Sanitation (2) in trunk canal (1) is indulged with Demonstration for Ecological Sanitation in the top of described downflow weir (4)
It is 10 ~ 12cm；
The height of described ecology bag downflow weir (3) is that Demonstration for Ecological Sanitation indulges 1/4 that trunk canal (1) canal is deep；
The height of described ecology bag infiltration wall (5) is the 1/2 of ecological transverse drainage Zhigou (2) ditch depth.
Terrace-type sloping upland multifunctional ecological sewerage the most according to claim 1, it is characterised in that: described ecological row
It is the designing and arranging discharge ratio with flow velocity that water indulges the Sectional Area in trunk canal (1), and effective drainage section is from downflow weir (4)
Top to Demonstration for Ecological Sanitation indulges the cross sectional area corresponding at the bottom of the canal of trunk canal (1).
Terrace-type sloping upland multifunctional ecological sewerage the most according to claim 1, it is characterised in that: described ecological row
Effective drainage section of the horizontal Zhigou of water (2) is to corresponding to the dam crest of the horizontal Zhigou of Demonstration for Ecological Sanitation (2) from the top of downflow weir (4)
Cross sectional area.
Terrace-type sloping upland multifunctional ecological sewerage the most according to claim 1, it is characterised in that: described ecology
Transverse drainage Zhigou (2) indulges the side in trunk canal (1) or its both sides are respectively provided with according to orographic condition at Demonstration for Ecological Sanitation, and Demonstration for Ecological Sanitation is horizontal
The interval of Zhigou (2) is designed according to Rill Erosion generation critical plane method, and arranges gradient i=0.003, slope aspect Demonstration for Ecological Sanitation
Vertical trunk canal (1).
Terrace-type sloping upland multifunctional ecological sewerage the most according to claim 1, it is characterised in that: described ecology bag
The ecology bag bag of downflow weir (3) is contained within the soil of drought-enduring waterlogging-resistant vegetation seed, and bag is nontoxic, anti-aging materials.
Terrace-type sloping upland multifunctional ecological sewerage the most according to claim 1, it is characterised in that: described ecology bag
Loading easy adsorption of nitrogen phosphorus and permeable sandstone in the ecology bag bag of infiltration wall (5), bag is nontoxic, anti-aging materials.
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| CN106012948A (en) * | 2016-06-16 | 2016-10-12 | 中国农业科学院农业资源与农业区划研究所 | Method for preventing and controlling agricultural non-point source pollution of hilly and mountainous regions through nitrogen and phosphorus interception ditches |
| CN106134556B (en) * | 2016-08-30 | 2018-03-23 | 扬州大学 | Control row in rice field runoff nitrogen phosphorus lattice field combines with farmland diafiltration and intercepts removal system and its application process |
| CN106348379B (en) * | 2016-08-30 | 2019-05-07 | 扬州大学 | There is plough sole rice field stalk vertical shaft to be combined nitrogen phosphorus diafiltration intercepting system and its application method with double-layer horizontal draining |
| CN109702003B (en) * | 2019-02-26 | 2020-08-18 | 云南大学 | Method for collecting phosphorus and reducing phosphorus again in phosphorus-rich region slope catchment region by kidney simulation |
| CN109673408A (en) * | 2019-02-26 | 2019-04-26 | 云南大学 | A kind of method of mountainous region or the solid soil control erosion of sloping upland plant networkization |
| CN110042810A (en) * | 2019-05-15 | 2019-07-23 | 云南大学 | A kind of sloping upland runoff pollution retains system |
| CN111165110B (en) * | 2020-01-10 | 2022-04-19 | 中国矿业大学 | Coal mining subsidence farmland quality improvement and transformation method based on ecological circular trench |
| CN112136610A (en) * | 2020-09-29 | 2020-12-29 | 西华师范大学 | Comprehensive utilization method for erosion gully of arid valley |
| CN113728879A (en) * | 2021-08-12 | 2021-12-03 | 中国科学院南京土壤研究所 | Compound interception area of nitrogen phosphorus non-point source pollution of slope arable land farmland |
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|---|---|---|---|---|
| KR20050033363A (en) * | 2003-10-06 | 2005-04-12 | 박호용 | Draining structure of the cut site |
| RU2449084C1 (en) * | 2010-08-12 | 2012-04-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Дальневосточный государственный университет путей сообщения" (ДВГУПС) | Drainage system |
| CN102094407A (en) * | 2010-12-31 | 2011-06-15 | 中国科学院南京土壤研究所 | Farmland runoff pollution ecological intercepting ditch |
| CN102177776A (en) * | 2011-04-29 | 2011-09-14 | 中国科学院水利部成都山地灾害与环境研究所 | Composite method for controlling rill erosion of slope farmlands |
| CN102966083A (en) * | 2012-11-30 | 2013-03-13 | 中国科学院东北地理与农业生态研究所 | Ecological ditch constructing method for controlling nitrogen and phosphorus in farmland drainage |
| CN103015382A (en) * | 2012-12-28 | 2013-04-03 | 镇江山水湾生态农业开发有限公司 | Agricultural non-point source pollution ecological intercepting ditch |
| CN203834441U (en) * | 2014-05-09 | 2014-09-17 | 武汉沃田生态科技有限公司 | Ecological drainage system for mountainous area slope cropland |
-
2014
- 2014-12-12 CN CN201410759975.2A patent/CN104452705B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104452705A (en) | 2015-03-25 |
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