CN207885345U - A kind of drip irrigation system suitable for artificial reconstructed side slope landforms - Google Patents
A kind of drip irrigation system suitable for artificial reconstructed side slope landforms Download PDFInfo
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- CN207885345U CN207885345U CN201721857408.6U CN201721857408U CN207885345U CN 207885345 U CN207885345 U CN 207885345U CN 201721857408 U CN201721857408 U CN 201721857408U CN 207885345 U CN207885345 U CN 207885345U
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- soakaway trench
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- 230000002262 irrigation Effects 0.000 title claims abstract description 104
- 238000003973 irrigation Methods 0.000 title claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 252
- 238000003860 storage Methods 0.000 claims abstract description 38
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 230000008595 infiltration Effects 0.000 claims description 18
- 238000001764 infiltration Methods 0.000 claims description 18
- 238000012384 transportation and delivery Methods 0.000 claims description 11
- 239000008400 supply water Substances 0.000 claims description 7
- 239000003621 irrigation water Substances 0.000 abstract description 6
- 239000003657 drainage water Substances 0.000 description 42
- 230000003204 osmotic effect Effects 0.000 description 39
- 238000013461 design Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 11
- 238000005325 percolation Methods 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 208000034423 Delivery Diseases 0.000 description 1
- 206010015866 Extravasation Diseases 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 239000002993 sponge (artificial) Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Abstract
The utility model is related to a kind of drip irrigation systems suitable for artificial reconstructed side slope landforms,The drip irrigation system includes pumping water device (1),Water source transfer piping (2),Low level tank (3),High-level water storage pond (4) and drip irrigation appliance,Drip irrigation appliance has soakaway trench (8),Wherein,Low level tank (3) is set to the lower part of side slope,High-level water storage pond (4) is set to the top of side slope,Pumping water device (1) connects low level tank (3) and high-level water storage pond (4) by water source transfer piping (2) respectively,For the water pump in low level tank (3) to be sent in high-level water storage pond (4),High-level water storage pond (4) connects the top of drip irrigation appliance,For making the water in high-level water storage pond (4) flow into drip irrigation appliance,Low level tank (3) connects the lower part of drip irrigation appliance,For collecting a part of water flowed out in drip irrigation appliance,Another part water is supplied water by soakaway trench (8) for side slope.The utility model can be applied to the uniform irrigation under different side slope landform, improve artificial side slope terrain irrigation water service efficiency.
Description
Technical field
The utility model is related to a kind of drip irrigation systems suitable for artificial reconstructed side slope landforms, belong to irrigation field.This is
System and method can be designed that a kind of uniform irrigation system that can be applied under different side slope landform, improve artificial side slope landform and fill
It irrigates and uses water service efficiency.
Background technology
Irrigation is to ensure one of the main means of moisture needed for slope vegetation growth and development, to artificial reconstructed side slope landforms
For vegetation, initial stage natural drought is the largest test, and since soil layer or matrix are relatively thin in side slope, water-holding capacity has
Limit, therefore suitable irrigation method is selected, it can not only make limited water resource obtain rationally efficiently utilizing, vegetation can also be made
Cheng Ping as early as possible, to effectively reduce soil erosion.Sprinkling irrigation and drip irrigation technique have applied maturation, but under slope problem, this
What kind problem often solved is not fine.In the side slope of the higher gradient, the water of sprinkling irrigation can quickly be flowed along side slope, cause water without
Method gos deep into soil.Though traditional trickle irrigation can slow down, since water head site water quality is often poor near manmade feature, impurities in water compared with
It is more, it is easy to block the weeper of traditional trickle irrigation pipe, and traditional trickle irrigation pipe is all Uniting shape, side slope landform is special
Point causes traditional drip irrigation system to be unevenly distributed the irrigation ability of artificial soil, and part vegetation growth can be caused difficult, to
So that side slope landform is lost meaning, thus can not well solve the problems, such as efficiently to utilize water resource.
Utility model content
The utility model is innovated and is provided aiming at can not well use this problem of traditional drip irrigation technique in current side slope
A kind of drip irrigation method for being applicable to use in artificial reconstructed high gradient side slope landforms and system.System designed by this method can
Applied to the uniform irrigation under different side slope landform, artificial side slope terrain irrigation water service efficiency is improved.
The utility model is related to a kind of drip irrigation system suitable for artificial reconstructed side slope landforms, the drip irrigation system includes pump
Water installations, water source transfer piping, low level tank, high-level water storage pond and drip irrigation appliance, drip irrigation appliance have soakaway trench, wherein
Low level tank is set to the lower part of side slope, and high-level water storage pond is set to the top of side slope, and pumping water device is passed by water source respectively
Piping connection low level tank and high-level water storage pond are passed, it is high-order for water pump in low level tank to be sent in high-level water storage pond
Tank connects the top of drip irrigation appliance, for making the water in high-level water storage pond flow into drip irrigation appliance, the connection of low level tank
The lower part of drip irrigation appliance, for collecting a part of water flowed out in drip irrigation appliance, another part water is supplied by soakaway trench for side slope
Water.
Wherein, drip irrigation appliance further includes water supply water-main road, return water water-main road and divides hydraulic pipeline；The master that supplies water is defeated
Water lines are arranged on the top of side slope, and water supply water-main road has water inlet and water outlet, and water supply water-main road enters water
Mouthful connection high-level water storage pond, the water outlet connection on water-main road divide hydraulic pipeline, hydraulic pipeline are divided to connect soakaway trench, for will
Water is transported to soakaway trench, to supply water for side slope；Hydraulic pipeline is divided to be also connected with return water water-main road, the connection of return water water-main road
Low level tank, for water to be sent back to low level tank.
Wherein, water supply water-main curb the upper lateral extension of side slope, divides hydraulic pipeline downward from the top of side slope
Portion extends, preferably vertical with the extending direction on water-main road；Soakaway trench extends from the left part of side slope to right part, preferably defeated with point
The extending direction of water lines is vertical；The lower, transverse that return water water-main curb side slope extends.
Wherein, divide hydraulic pipeline that there is top water inlet, lower part water return outlet and intermediate water outlet；In intermediate water outlet setting
In line segments between portion's water inlet and lower part water return outlet；The water outlet connection on water-main road divides the top of hydraulic pipeline to enter water
Mouthful, divide the intermediate water outlet of hydraulic pipeline to connect soakaway trench, for delivering water into soakaway trench, to supply water for side slope；Divide water delivery
The lower part water return outlet connection return water water-main road of pipeline.
Wherein, the drip irrigation appliance is provided with multiple row, and along side slope longitudinal arrangement, it is that 1-10 is arranged to select excellent, divides hydraulic pipeline
Intermediate water outlet be provided with it is multiple.
Wherein, soakaway trench is multiple rows of, and arrangement mode is：It is multiple rows of along being provided with from the top of side slope to lower, transverse；
Angle between side slope and horizontal plane is to be less than 90 degree, preferably 10-70 degree more than 0 degree.
Wherein, soakaway trench includes support hard tube, seepage flow layer and apopore, and wherein apopore setting is on support hard tube；It oozes
Fluid layer is wrapped on support hard tube, and covers apopore.
Wherein, the material of seepage flow layer is polyurathamc plastics.
Wherein, drip irrigation appliance further includes tachograph, inlet pressure gauge, delivery gauge, backwater valve and water supply valve, is supplied
Penstock is set between water supply water-main road and connection high-level water storage pond, for cutting off and/or opening water supply, backwater valve
It is set to the lower part of point hydraulic pipeline, for cutting off and/or opening return water, tachograph and inlet pressure gauge are set to a point water-supply-pipe
The top on road, delivery gauge are set to the lower part of point hydraulic pipeline.
The utility model further relates to a kind of determination method of soakaway trench infiltration coefficient under different height in drip irrigation system, described
Drip irrigation system is the drip irrigation system suitable for artificial reconstructed side slope landforms, which is characterized in that is included the following steps：
(1) water supply Q, unit m needed for determining the side slope daily first3/ d, d are the meaning in day；
(2) the percolation flow velocity V in single soakaway trench (8) is determinedi, unit m/d；Percolation flow velocity ViMeet following formula (1)：
Q=π DL × ∑ Vi, (i=1,2,3 ..., n) (1)
Wherein, i is the number of rows of soakaway trench, i=1,2,3 ..., n；L is the design length that hard tube is supported in soakaway trench, single
Position is m；D is the design diameter D, unit m that hard tube is supported in soakaway trench；
(3) osmotic coefficient k of the seepage flow layer (14) of single soakaway trench is determinedi, unit m/d；Osmotic coefficient kiMeet following public
Formula (2)：
PiFor pressure in the i-th drainage water pipe, unit Pa；γ is the severe of water, unit N/m3, it is fixed constant；H is seepage flow
The average thickness of layer, unit m；
(4) in order to ensure that infiltration ability of each drainage water pipe (8) under different elevations is identical, oozing under different height is determined
The osmotic coefficient k of the seepage flow layer (14) of water pipei, the osmotic coefficient k of the seepage flow layer (14) of the soakaway trench under different heightiMeet with
Lower formula (3)：
H is that Slope Design irrigates the total elevation of area coverage, unit m, H0It is defeated to master for water free surface in high-level water storage pond
Depth displacement between water lines (5), unit m；
(5) since Slope Design irrigates in the total elevation H of area coverage and high-level water storage pond water free surface to water-main
Depth displacement H between road (5)0It is it is known that therefore obtaining the osmotic coefficient k of the 1st drainage water pipe according to formula (3) first1, the 1st row oozes
Water pipe is to start the 1st drainage water pipe (8) arranged from side slope top to obtain i-th one by one from top to bottom then by formula (4)
The osmotic coefficient k of drainage water pipei, formula (4) is：
To achieve the goals above, a kind of drip irrigation system being applicable in side slope landform designed by the utility model, the system
Including：Water resource system, water-carriage system and osmotic system, the water resource system include low level tank, high-level water storage pond, pump dress
Set with water source transfer piping, the low level tank be irrigation water source, so-called high-level reservoir be irrigate potential energy source, institute
It is a kind of power plant that can be moved water source pump in low level tank in high-level water storage pond to state pumping water device, and the water source passes
Pass piping connection low level tank and pumping water device and high-level water storage pond；The water-carriage system includes water-main road and divides defeated
Water lines, the water-main road refer to connecting pumping water device and dividing thicker UPVC pipelines between hydraulic pipeline, and described point defeated
Water lines refer to thinner UPVC pipelines between connection water-main road and osmotic system, and the UPVC is vinyl chloride monomer through poly-
It closing and reacts and amorphous thermoplastic resin that is manufactured and adding stabilizer, lubricant, UPVC possesses ripe forming technique,
And cost is relatively low, fluid resistance is small and intensity meets engineering pipeline requirement；The osmotic system refers to irrigation flow end
Soakaway trench, including support hard tube and seepage flow layer, the support hard tube refer to the irrigation conduit with apopore of UPVC hard tube materials
Body supports, it is to extend transversely through circular hole to support all holes in hard tube, and the diameter in hole is more than impurity diameter in water source, is less than support
The a quarter of hard tube diameter, hole are distributed as uniformly on support hard tube, and the spacing in hole ensures the 5 of support hard tube diameter
Times or so, the seepage flow layer is that a kind of micro-elasticity flexible material of known penetrating power wraps up shape to carrying out multilayer outside support hard tube
At outer casing, it is known that the micro-elasticity flexible material of penetrating power be low ratio foamed amount high density soft urethane plastics it is (common
Low-density polyurethane is artificial sponge).
Further, height and position of the soakaway trench used in drip irrigation system is different in the osmotic system, seepage flow
The infiltration coefficient of the polyurathamc plastic bag covering layer of layer is different.According to Darcy formulaEnsureing seepage flow layer
It is in inverse relation in the case that seepage velocity is constant, between osmotic pressure difference Δ P and osmotic coefficient k.The infiltration coefficient is liquid
Body is by a kind of reference coefficient for the capacity of water that porous media is permeated, therefore the polyurathamc plastics of different infiltration coefficients
It is realized by gas release size.Therefore since same drainage water pipe is all in same level in artificial side slope, elevation
It is equal, and different drainage water pipes are in elevation HiOn be spaced substantially equidistant, then with from most bottom drainage water pipe to highest arrange seep water
Pipe is stepped up on elevation per drainage water pipe, with the osmotic pressure difference outside pipe be also in pipe gradually etc. differences it is increased, second
Osmotic pressure difference Δ P in drainage water pipe2Osmotic pressure difference Δ P about in highest drainage water pipe12 times, then closed according to inverse proportion
System, the polyurethane plastics osmotic coefficient k that the second drainage water pipe uses outside2The plasticized polyurethane about used outside highest drainage water pipe
The osmotic coefficient k of material11/2；And then osmotic pressure difference Δ P in third drainage water pipe3About osmotic pressure in highest drainage water pipe
Force difference Δ P13 times, and the osmotic coefficient k outside third drainage water pipe3About highest drainage water pipe extravasation fluid layer osmotic coefficient k1
1/3, and so on design the osmotic coefficient k of the polyurathamc used outside the soakaway trench of all rowsi, to realize in side slope
The trickle irrigation water percolating capacity that different height position soakaway trench is provided is approximately equal.
Further, the low ratio foamed amount high density soft urethane plastic bag covering layer has certain infiltration ability,
But it is different from the single hole infiltration design pattern of traditional drip irrigation system, the porous structure of polyurathamc plastics makes entire trickle irrigation system
System requires to reduce much to water source impurity content, even if silt impurity content is more in water source, all permeable duct quilts occur
The possibility of blocking is very low, to avoid dripping hole plug in traditional drip irrigation system and make irrigation system occur part or
Allomeric function fails.
The utility model has the advantage of：Package this structure design of polyurathamc plastics protecting on the outside of soakaway trench
While the high-quality characteristic of the traditional drip irrigation system low water consumption of card, water seepage hole occurs and is substantially reduced by the probability that impurity blocks；If
Set soakaway trench infiltration coefficient have decreasing gradient variation drip irrigation system, so as to according to actual grade demand to trickle irrigation
The arrangement design of system carries out reasonable distribution, and side slope landform is made to realize that efficient water resource utilizes during irrigating；This practicality
It is novel so that complex slope landform can also realize uniform irrigation, avoid caused by uneven irrigation vegetation by unexpected mould
Formula is grown, and makes artificial side slope landform disabler.
Description of the drawings
Fig. 1 is a kind of drip irrigation system integral arrangement structural representation suitable for artificial reconstructed side slope landforms of the utility model
Figure；
Fig. 2 is the microstructure schematic diagram of osmotic system in the utility model；
Fig. 3 is the determination flow chart of soakaway trench infiltration coefficient under different height in a kind of drip irrigation system of the utility model.
In figure：Pumping water device 1, water source transfer piping 2, low level tank 3, high-level water storage pond 4, water supply water-main road 5,
Hydraulic pipeline 7, soakaway trench 8, tachograph 9, inlet pressure gauge 10, delivery gauge 11, back-water valve (BWV) are divided in return water water-main road 6
Door 12, water supply valve 13, seepage flow layer 14 support hard tube 15, apopore 16
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments；
Since traditional drip irrigation design is the design of pipe networks for based on simple smooth landforms spread out and put on covering, this tiling is set
Meter uses less efficient in Artificial Side-slope landforms, and the water head site of Artificial Side-slope landform is generally fetched water nearby, in water
Impurity is relatively more, and water pipe is easy to block.Therefore according to the defect of original drip irrigation system and the requirement of new landform, to pipe network
Bedding and irrigation Terminal Design structure carry out utility model.Specific implementation mode is as follows：
As shown in Figs. 1-2, a kind of drip irrigation system suitable for artificial reconstructed side slope landforms, the drip irrigation system include pumping
Device 1, water source transfer piping 2, low level tank 3, high-level water storage pond 4 and drip irrigation appliance, drip irrigation appliance have soakaway trench 8,
In, low level tank 3 is set to the lower part of side slope, and high-level water storage pond 4 is set to the top of side slope, and pumping water device 1 passes through respectively
Water source transfer piping 2 connects low level tank 3 and high-level water storage pond 4, for water pump in low level tank 3 to be sent to high-level water storage
In pond 4, high-level water storage pond 4 connects the top of drip irrigation appliance, low for making the water in high-level water storage pond 4 flow into drip irrigation appliance
Position tank 3 connects the lower part of drip irrigation appliance, and for collecting a part of water flowed out in drip irrigation appliance, another part water is by oozing
Water pipe 8 supplies water for side slope.Drip irrigation appliance further includes water supply water-main road 5, return water water-main road 6 and divides hydraulic pipeline 7；For
Water water-main road 5 is arranged on the top of side slope, and water supply water-main road 5 has water inlet and water outlet, water supply water-main
The water inlet connection high-level water storage pond 4 on road 5, the water outlet connection on water-main road 5 divide hydraulic pipeline 7, hydraulic pipeline 7 are divided to connect
Soakaway trench 8, for delivering water into soakaway trench 8, to supply water for side slope；Hydraulic pipeline 7 is divided to be also connected with return water water-main road 6,
Return water water-main road 6 connects low level tank 3, for water to be sent back to low level tank 3.
Wherein, water supply water-main road 5 along side slope upper lateral extend, divide hydraulic pipeline 7 from the top of side slope to
Lower part extends, preferably vertical with the extending direction on water-main road 5；Soakaway trench 8 from the left part of side slope to right part extend, preferably with
Divide the extending direction of hydraulic pipeline 7 vertical；Return water water-main road 6 extends along the lower, transverse of side slope.Hydraulic pipeline 7 is divided to have
There are top water inlet, lower part water return outlet and intermediate water outlet；Between intermediate water outlet setting top water inlet and lower part water return outlet
Line segments on；The water outlet connection on water-main road 5 divides the top water inlet of hydraulic pipeline 7, and the centre of hydraulic pipeline 7 is divided to go out
The mouth of a river connects soakaway trench 8, for delivering water into soakaway trench 8, to supply water for side slope；The lower part water return outlet of hydraulic pipeline 7 is divided to connect
Take back water water-main road 6.The drip irrigation appliance is provided with multiple row, and along side slope longitudinal arrangement, it is 1-10 to select excellent, divides water-supply-pipe
The intermediate water outlet on road (7) is provided with multiple.Soakaway trench 8 is multiple rows of, and arrangement mode is：Along from the top of side slope to lower part
It is horizontally arranged with multiple rows of；Angle between side slope and horizontal plane is to be less than 90 degree, preferably 10-70 degree more than 0 degree.Such as Fig. 2 institutes
Show, soakaway trench 8 includes support 15 seepage flow layer 14 of hard tube and apopore 16, and wherein the setting of apopore 16 is on support hard tube 15；It oozes
Fluid layer 14 is wrapped on support hard tube 15, and covers apopore 16.The material of seepage flow layer 14 is polyurathamc plastics.Trickle irrigation fills
It further includes tachograph 9, inlet pressure gauge 10, delivery gauge 11, backwater valve 12 and water supply valve 13 to set, and water supply valve 13 is set
It is placed between water supply water-main road 5 and connection high-level water storage pond 4, for cutting off and/or opening water supply, backwater valve 12 is arranged
In the lower part for dividing hydraulic pipeline 7, for cutting off and/or opening return water, tachograph 9 and inlet pressure gauge 10 are set to a point water-supply-pipe
The top on road 7, delivery gauge 11 are set to the lower part of point hydraulic pipeline 7.
Pumping water device 1 is used to promote the power of total system, and the water resource of neighbouring water head site is migrated to side slope landform
Eminence, so that water source is produced gravitional force, by potential energy drive irrigation water migration, achieve the purpose that irrigation.Various water deliverys
Trickle irrigation terminal of the pipeline water resource assignment to osmotic system.Osmotic system is the irrigation terminal of entire drip irrigation system, is responsible for water
Source, which is directly irrigated, arrives soil surface.Since the purpose of utility model is by water source uniform irrigation to side slope landforms, so seepage flow system
The design of system can refer to following calculation formula etc. and be designed, as shown in figure 3, its indicate it is different in a kind of drip irrigation system
The determination flow chart of soakaway trench infiltration coefficient under height.
Fig. 3 illustrates a kind of determination method of soakaway trench infiltration coefficient under different height in drip irrigation system, the trickle irrigation
System is the drip irrigation system suitable for artificial reconstructed side slope landforms, which is characterized in that is included the following steps：
(1) water supply Q, unit m needed for determining the side slope daily first3/ d, d are the meaning in day；
(2) the percolation flow velocity V in single soakaway trench (8) is determinedi, unit m/d；D is the meaning in day；Percolation flow velocity ViMeet
Following formula (1)：
Q=π DL × ∑ Vi, (i=1,2,3 ..., n) (1)
Wherein, i is the number of rows of soakaway trench, i=1,2,3 ..., n；L is the design length that hard tube is supported in soakaway trench, single
Position is m；D is the design diameter D, unit m that hard tube is supported in soakaway trench；
(3) osmotic coefficient k of the seepage flow layer (14) of single soakaway trench is determinedi, unit m/d；Osmotic coefficient kiMeet following public
Formula (2)：
PiFor pressure in the i-th drainage water pipe, unit Pa；γ is the severe of water, unit N/m3, it is fixed constant；H is seepage flow
The average thickness of layer, unit m；
(4) in order to ensure that infiltration ability of each drainage water pipe (8) under different elevations is identical, oozing under different height is determined
The osmotic coefficient k of the seepage flow layer (14) of water pipei, the osmotic coefficient k of the seepage flow layer (14) of the soakaway trench under different heightiMeet with
Lower formula (3)：
H is that Slope Design irrigates the total elevation of area coverage, unit m, H0It is defeated to master for water free surface in high-level water storage pond
Depth displacement between water lines (5), unit m；
(5) since Slope Design irrigates in the total elevation H of area coverage and high-level water storage pond water free surface to water-main
Depth displacement H between road (5)0It is it is known that therefore obtaining the osmotic coefficient k of the 1st drainage water pipe according to formula (3) first1, the 1st row oozes
Water pipe is to start the 1st drainage water pipe (8) arranged from side slope top to obtain i-th one by one from top to bottom then by formula (4)
The osmotic coefficient k of drainage water pipei, formula (4) is：
Specific process step is as follows：
First, in accordance with the artificial reconstructed side slope landforms completed, this can be obtained and provide water supply Q needed for the side slope, it is single
Position m3/ d, and, unit m.Assuming that water requirement is Q1 on the side slope area of each tandem drainpipe covering, and same side slope area
Upper evaporation capacity is Q2, then water requirement Q=Q1+Q2 on the side slope area that the tandem soakaway trench is covered, the need of vegetation in side slope
Water and evaporation capacity are to be provided according to the weather experience of engineering location and the experience of vegetation culture.According to the water sources Ding Yuan
Seepage flow involves range in the soil, is determined to every infiltration tube spacing in osmotic system, is illustrated according to Fig. 1, theoretically oozed
Water pipe design is more intensive, and the even results of irrigation are more apparent, but the cost of irrigation system can be higher, so should be according to real economy
Situation considers the design spacing of soakaway trench.Assume that n drainage water pipes are added in the side slope medium design at present, then according to confession
Water Q can obtain being happened at the percolation flow velocity that the seepage flow layer of every soakaway trench in osmotic system may occur, due to seepage flow system
It is thinner with managing in system, so gravity is distributed influence very little to percolation flow velocity in the seepage flow layer of single soakaway trench, can ignore, therefore
It is V that percolation flow velocity occurs in the seepage flow layer of i-th drainage water pipei, unit m/d, wherein i=1,2,3 ..., n.It sets for convenience
Meter and processing, therefore n arrange in all soakaway trench support hard tube design length L and diameter D it is equal, unit m, so water supply Q with
Percolation flow velocity ViThere are following relationships：
Q=π DL × ∑ Vi, (i=1,2,3 ..., n), formula (1)
Further, relatively uniform in order to ensure obtaining irrigation water in entire side slope, then ensure to occur in n drainage water pipes
Percolation flow velocity ViAll it is identical, i.e. V1=V2=L=Vn.According to Darcy formulaIt can obtain the i-th drainage water pipe
Interior pressure PiWith the relationship between percolation flow velocity V：
Wherein ki(m/d) it is the average infiltration coefficient of the i-th drainage water pipe seepage flow layer, unit m/d；PiFor in the i-th drainage water pipe
Pressure, unit Pa；P0For soakaway trench seepage flow layer outside pressure, i.e. atmospheric pressure, unit Pa, due to designing on the basis of atmospheric pressure,
Therefore P0=0；γ is the severe of water, unit N/m3, it is fixed constant；H is the average thickness of seepage flow layer, and unit m adds to design
Work is convenient, therefore it is h to design all soakaway trench seepage flow layer thickness uniformly.Due to the infiltration mulching soil face of every drainage water pipe of design
Product is essentially identical, therefore spacing is identical between actually all soakaway trench, and single infiltration inner pipe water pressure is on same elevation, then single
Overpressure PiDistribution is substantially identical everywhere, and the osmotic coefficient k of the i-th drainage water pipeiWith pressure P in the drainage water pipeiBetween deposit
In following relationships：
Further, Slope Design irrigates area coverage total elevation H, unit m, then water free surface in high-level water storage pond
It is H to depth displacement between water-main road0, unit m；The elevation of i-th drainage water pipe is Hi, unit m, and in order to make construction party
Just, then spacing is uniformly distributed between designing all soakaway trench, so elevation then on the basis of most descending drainage water pipe, then the i-th row seeps water
The elevation of pipe can be expressed asAnd pressure P in the i-th drainage water pipeiIt is then right on hydraulic pipeline with dividing for water-carriage system
It answers position pressure equivalent, therefore divides hydraulic pipeline that should meet Bernoulli equation due to water-carriage systemI-th
The overpressure P of drainage water pipeiAlso it should meet Bernoulli equation.Drip irrigation system belongs to a kind of water saving fixtures, therefore flow in system
Flowing is slower, in pipeline the flowing of water lie substantially in laminar condition, each point water flow velocity in water-carriage system and osmotic system
Spend essentially identical, then the Bernoulli equation in water-carriage system can be reduced to following equation：
Further, in order to ensure that infiltration ability of each drainage water pipe under different elevations is identical, then the i-th drainage water pipe
Overpressure PiFollowing Bernoulli equation should be met：
Then
The then osmotic coefficient k of the i-th drainage water pipeiIt can be expressed as：
If the osmotic coefficient k of the 1st drainage water pipe1It is known that the then osmotic coefficient k of the i-th drainage water pipeiFor
If H0There is leak on smaller or water supply water-main road, then H0≈ 0, the osmotic coefficient k of the i-th drainage water pipeiCan abbreviation be
According to above-mentioned formula, the permeable formation osmotic coefficient k of different drainage water pipes can be tentatively obtainediConcrete numerical value, but
According to engineering demand the usage amount of water is reduced to the greatest extent premised on ensureing that all soil can obtain irrigating covering, it can be to oozing
Water layer design improves the service efficiency of water resource using the approximate material simplified.
Claims (11)
1. a kind of drip irrigation system suitable for artificial reconstructed side slope landforms, which is characterized in that the drip irrigation system includes pumping to fill
(1), water source transfer piping (2), low level tank (3), high-level water storage pond (4) and drip irrigation appliance are set, drip irrigation appliance has infiltration
It manages (8), wherein low level tank (3) is set to the lower part of side slope, and high-level water storage pond (4) are set to the top of side slope, pump dress
It sets (1) and low level tank (3) and high-level water storage pond (4) is connected by water source transfer piping (2) respectively, be used for low level tank
(3) water pump in is sent in high-level water storage pond (4), and high-level water storage pond (4) connect the top of drip irrigation appliance, for making high-level water storage
Water in pond (4) flows into drip irrigation appliance, and low level tank (3) connects the lower part of drip irrigation appliance, for collecting in drip irrigation appliance
A part of water of outflow, another part water are supplied water by soakaway trench (8) for side slope.
2. drip irrigation system according to claim 1, which is characterized in that drip irrigation appliance further include water supply water-main road (5),
Return water water-main road (6) and divide hydraulic pipeline (7)；Water supply water-main road (5) is arranged on the top of side slope, main water delivery of supplying water
There is pipeline (5) water inlet and water outlet, water inlet connection high-level water storage pond (4) on water supply water-main road (5) to supply water main defeated
The water outlet connection of water lines (5) divides hydraulic pipeline (7), divides hydraulic pipeline (7) to connect soakaway trench (8), for delivering water into
Soakaway trench (8), to supply water for side slope；Hydraulic pipeline (7) is divided to be also connected with return water water-main road (6), return water water-main road (6)
Low level tank (3) is connected, for water to be sent back to low level tank (3).
3. drip irrigation system according to claim 2, which is characterized in that water supply water-main road (5) along side slope top
It is laterally extended, hydraulic pipeline (7) is divided to extend from the top of side slope to lower part；Soakaway trench (8) extends from the left part of side slope to right part；
Return water water-main road (6) extends along the lower, transverse of side slope.
4. according to the drip irrigation system described in one of claim 1-3, which is characterized in that divide hydraulic pipeline (7) that there is top to enter water
Mouth, lower part water return outlet and intermediate water outlet；In line segments between intermediate water outlet setting top water inlet and lower part water return outlet；
The water outlet connection on water supply water-main road (5) divides the top water inlet of hydraulic pipeline (7), and the centre of hydraulic pipeline (7) is divided to go out
The mouth of a river connects soakaway trench (8), for delivering water into soakaway trench (8), to supply water for side slope；The lower part of hydraulic pipeline (7) is divided to return
The mouth of a river connects return water water-main road (6).
5. according to the drip irrigation system described in one of claim 1-3, which is characterized in that the drip irrigation appliance is provided with multiple row, edge
Side slope longitudinal arrangement, divides the intermediate water outlet of hydraulic pipeline (7) to be provided with multiple.
6. drip irrigation system according to claim 5, which is characterized in that the drip irrigation appliance along side slope longitudinal arrangement, if
It is set to 1-10 row.
7. according to the drip irrigation system described in one of claim 1-3, which is characterized in that soakaway trench (8) is multiple rows of, arrangement mode
For：It is multiple rows of along being provided with from the top of side slope to lower, transverse；Angle between side slope and horizontal plane is to be less than 90 more than 0 degree
Degree.
8. drip irrigation system according to claim 7, which is characterized in that the angle between side slope and horizontal plane is 10-70 degree.
9. according to the drip irrigation system described in one of claim 1-3, which is characterized in that soakaway trench (8) is hyposmosis soakaway trench
(8)。
10. according to the drip irrigation system described in one of claim 1-3, which is characterized in that drip irrigation appliance further include tachograph (9),
Inlet pressure gauge (10), delivery gauge (11), backwater valve (12) and water supply valve (13), water supply valve (13) are set to confession
Between water water-main road (5) and high-level water storage pond (4), for cutting off and/or opening water supply, backwater valve (12) is set to point
The lower part of hydraulic pipeline (7), for cutting off and/or opening return water, tachograph (9) and inlet pressure gauge (10) are set to a point water delivery
The top of pipeline (7), delivery gauge (11) are set to the lower part of a point hydraulic pipeline (7).
11. drip irrigation system according to claim 3, which is characterized in that divide hydraulic pipeline (7) from the top of side slope to lower part
Extend, and vertical with the extending direction on water supply water-main road (5)；Soakaway trench (8) extends from the left part of side slope to right part, and
And it is vertical with the extending direction of hydraulic pipeline (7) is divided.
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| CN201721857408.6U CN207885345U (en) | 2017-12-26 | 2017-12-26 | A kind of drip irrigation system suitable for artificial reconstructed side slope landforms |
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| CN201721857408.6U CN207885345U (en) | 2017-12-26 | 2017-12-26 | A kind of drip irrigation system suitable for artificial reconstructed side slope landforms |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108243907A (en) * | 2017-12-26 | 2018-07-06 | 中煤地质工程总公司北京水工环地质勘查院 | It is a kind of suitable for the drip irrigation system of artificial reconstructed side slope landforms and its determining method of permeability |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108243907A (en) * | 2017-12-26 | 2018-07-06 | 中煤地质工程总公司北京水工环地质勘查院 | It is a kind of suitable for the drip irrigation system of artificial reconstructed side slope landforms and its determining method of permeability |
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