CN110028164A - A kind of lakeside zone and its construction method intercepting purification pollution of area source - Google Patents
A kind of lakeside zone and its construction method intercepting purification pollution of area source Download PDFInfo
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- CN110028164A CN110028164A CN201910290698.8A CN201910290698A CN110028164A CN 110028164 A CN110028164 A CN 110028164A CN 201910290698 A CN201910290698 A CN 201910290698A CN 110028164 A CN110028164 A CN 110028164A
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- 238000000746 purification Methods 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 238000003973 irrigation Methods 0.000 claims description 15
- 230000002262 irrigation Effects 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 13
- 239000004575 stone Substances 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 11
- 238000012876 topography Methods 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 47
- 238000000034 method Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000012851 eutrophication Methods 0.000 description 5
- 238000006424 Flood reaction Methods 0.000 description 4
- 240000003826 Eichhornia crassipes Species 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 241001502129 Mullus Species 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 235000005273 Canna coccinea Nutrition 0.000 description 1
- 240000008555 Canna flaccida Species 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000003715 nutritional status Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Revetment (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The present invention provides a kind of lakeside zones for intercepting purification pollution of area source；Set gradually the first terrace, the first depression, the second terrace, the second depression, third terrace, third depression outward along lake region, the bottom on third terrace is embedded with diversion pipe；The section of third terrace be it is trapezoidal, the elevation of third terrace increases step by step；The section in the first depression and the second depression is inverted trapezoidal, and the section in third depression is concave shape, and the elevation in three-level depression increases step by step；On first terrace kind be implanted with it is resistance to flood type emergent aquactic plant, kind is implanted with drought-enduring type emergent aquactic plant on the second terrace and third terrace；Kind be implanted with fluitante in first depression, kind be implanted in the second depression it is resistance to flood type emergent aquactic plant, kind be implanted with turf in third depression.The present invention is built in multistage terrace and depression by transformation lakeside zone landform, can effectively increase dead time of the pollution of area source on lakeside zone, pollution of area source is avoided directly to enter lake, created favorable conditions for the absorption cleaning of lakeside zone water plant.
Description
Technical field
The present invention relates to a kind of lakeside zones and its construction method for intercepting purification pollution of area source, belong to Water Ecological Recovery technology
Field.
Background technique
Lake is most important fresh water accumulation library on the earth, and available freshwater resources 90% are all accumulated in lake in earth's surface
In.Therefore, the production, life of lake and the mankind are closely related, have important society, ecological functions, raw if water transfer is controlled flood
Produce, life water source, aquaculture, sightseeing tour etc..Meanwhile some lakes or bio-diversity wetland the most abundant are raw
A part of state system provides valuable habitat for various biologies.It is fast with China's economy however, over nearly more than 20 years
Speed development, is all greatly reinforced to the exploitation of lake resource, using scale and speed, affects the natural evolution process in lake, right
Lake ecosystem causes serious destruction.With the fast development of Chinese society economy and urbanization process, Water Environment In Lakes
Pollution problem becomes increasingly conspicuous.Wherein, the lake eutrophication that nitrogen and phosphorus pollutants cause is particularly problematic.
Achievement is evaluated according to national comprehensive planning of water resources, the representative lake in 84, the whole nation there are 44 lakes in eutrophy
Change, remaining lake is middle nutritional status.In fact, except it is a small number of individually or and in addition to having heavy metal or organic contamination, China
The lake pollution overwhelming majority is eutrophication caused by nitrogen and phosphorus pollution.A large number of studies show that pollution of area source is to cause lake nitrogen, phosphorus
The principal element of eutrophication, in fact, many water plants all have stronger purification of water quality ability, such as Eichhornia crassipes, great Piao
Deng by extending residence time of the Lake Water Body on lakeside zone, and building the living environment that water plant is liked, Ke Yi great
The big water quality purification function for promoting lakeside zone, and then realize pollution of area source control, however, the research of this respect is still less at present,
The pollution of area source for how controlling lake is the key that the eutrophy for solving the problems, such as lake.
And lakeside zone is the intermediate zone between lake waters and basin terrestrial ecosystems, is the important natural barrier in lake,
It not only can effectively be detained the pollutant of terrestrial input, the function of also purifying water.To make full use of the water for playing lakeside zone
Matter purification function, metallographic is bright etc. to propose a kind of method of loke shore buffer strip ecological reconstruction, and Zhou Junjun etc. then proposes a kind of lake
Bank ecological repairs structural system and restorative procedure, these methods can be promoted effectively by carrying out restoration of the ecosystem to lakeside zone
The water quality purification function of lakeside zone, but based on being purified water using terrestrial plant or hygrophyte, and enter Lake Water Body in lake
The dead time that shore takes is shorter, and the water quality purification function of lakeside zone is not fully utilized；For another example Publication No.
A kind of method of loke shore buffer strip ecological reconstruction, the patent disclosed in the Chinese patent of CN102249416B can have with the application
Effect intercepts purification pollution of area source, and increases the landscape effect of lakeside zone, is a difference in that the application mainly takes water plant to come
It purifies water, the dead time of water flow on lakeside zone is increased by topography reform；For another example Publication No. CN106381837A
A kind of lakeside zone restoration of the ecosystem structural system and restorative procedure disclosed in Chinese patent, the patent and the application are all made of plant structure
Build, topography reform promotes the water quality purification function of lakeside zone, be a difference in that the application cost of investment is relatively low, do not need
Too many outward transport and outsourcing, dead time of the water flow on lakeside zone are also significant longer；For another example Publication No.
A kind of wetland lakeside zone pollution of area source disclosed in the Chinese patent of CN106745786A intercepts and water body purification, the patent and this Shen
Plants configuration is all referred to, is a difference in that the configuration of the application major design water plant, and the patent is terrestrial plant and water
The configuration of plant.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of lakeside zone for intercepting purification pollution of area source and its building sides
Method, the lakeside zone and its construction method which purifies pollution of area source utilize water plant by transformation lakeside zone landform
Detergent power intercepts pollution of area source except water body in lake, moreover it is possible to which effectively control water body in lake eutrophication avoids lake from drilling
Become the muddy water state algae type ecosystem or water plant overgrowing phenomenon occurs.
The present invention is achieved by the following technical programs.
A kind of lakeside zone intercepting purification pollution of area source provided by the invention；Set gradually outward along lake region the first terrace,
First depression, the second terrace, the second depression, third terrace, third depression, the bottom on third terrace are embedded with diversion pipe；Three-level
The section on terrace be it is trapezoidal, the elevation of third terrace increases step by step；The section in the first depression and the second depression is inverted trapezoidal,
The section in third depression is concave shape, and the elevation in three-level depression increases step by step；Kind is implanted with the resistance to type that floods and endures water on first terrace
Plant forms plant isolation strip, and kind is implanted with drought-enduring type emergent aquactic plant on the second terrace and third terrace；In first depression
Kind be implanted with fluitante, kind be implanted in the second depression it is resistance to flood type emergent aquactic plant, kind be implanted with turf in third depression.
First terrace, the first depression, the second terrace, the second depression, third terrace, third depression form six grades of interceptions
Purification system.
The height on first terrace is between lake region normal water line and maximum water level.
The floor elevation in first depression is less than lake region lowest water level line.
It is successively equipped with loam, sandy soil, gravel, blind pipe under the turf, drilling is equipped on blind pipe, blind pipe passes through water conservancy diversion
Pipe is connected to the second depression.
The floor elevation of the gravel is greater than the floor elevation in the second depression.
A kind of construction method based on lakeside zone for intercepting purification pollution of area source, comprising the following steps:
1. regional choice: more than the ordinary water level of lake region, being wider than the area of 7m less than 30 °, lakeside zone along the lake region selection gradient
Domain constructs region as lakeside zone；
2. topography reform: it successively excavates and accumulates outward along lake region, the first terrace of setting, the first depression, the second terrace, the
Two depression, third terrace, third depression form three-level depression and third terrace；
3. matrix and pipe network are laid with: burying blind pipe in third depression bottom, third terrace bottom is excavated groove and is laid with and leads
Flow tube, blind pipe are connected to by diversion pipe with the second depression；Secondly, being successively laid with gravel, sandy soil, loam on blind pipe, and blind
Drilling is opened up on pipe；
4. water plant planting: planted on the first terrace it is resistance to flood type emergent aquactic plant, planted on the second terrace and third terrace
Drought-enduring type emergent aquactic plant is planted, fluitante is planted on the first depression, is planted on the second depression and resistance to floods type emergent aquactic plant, third depression
Upper Turf Culture.
2. the step is divided into following steps:
At from 1~2m of lakeside zone water surface curve, one width of excavation along the lake is 2~4m, depth is 1~1.5m, cross section
For the irrigation canals and ditches of inverted trapezoidal, the first depression is formed；
The cubic metre of earth and stone being excavated is deposited in the left and right sides in the first depression, right side forms the first terrace, and left side is formed
Second terrace, and make the height on the first terrace between lake region normal water line and maximum water level；
At from 4~8m of lakeside zone water surface curve, excavate a width be 1~2m, depth is 0.5~1m, cross section be fall
Trapezoidal irrigation canals and ditches form the second depression, make the floor elevation in the second depression lower than lake region maximum water level；
The cubic metre of earth and stone being excavated is deposited in the left and right sides in the second depression, right side forms the second terrace, and left side is formed
Third terrace；
At from 6~12m of lakeside zone water surface curve, excavate that a width is 1~2m, to be less than 1m, cross section be recessed to depth
The irrigation canals and ditches of shape form third depression；
The cubic metre of earth and stone being excavated is deposited on third terrace.
3. the step is divided into following steps:
The embedded blind pipe that diameter is 10cm, surface drilling aperture is 5mm in bottom in third depression；
In the bottom on third terrace, lake region groove is excavated along lakeside zone, is laid in the trench identical as blind pipe model
Diversion pipe, blind pipe is connected to by diversion pipe with the second depression；
The earth of the gravel of one layer of 30cm thickness, the sandy soil of one layer of 40cm thickness and one layer of 20~30cm thickness is successively laid on blind pipe
Soil, so that third depression is in a concave shape.
The beneficial effects of the present invention are:
1. being built in multistage terrace and depression by transformation lakeside zone landform, pollution of area source can be effectively increased and existed
Dead time on lakeside zone, pollution of area source is avoided directly to enter lake, is that the absorption cleaning of lakeside zone water plant creates advantageous item
Part；
2. intercepting pollution of area source layer by layer by the water plant for planting different ecological type on different terraces and depression
And constantly purified by water plant, can effective Control the Plan Pollution Sources, reduce into lake pollutant, avoid lake region because of water eutrophication
Change and evolves into the muddy water state algae type ecosystem or water plant overgrowing phenomenon occur；
3. pollutant is transformed into organic matter by the absorption using lakeside zone water plant, hand harvest and beat
Vatman makees more convenient, more controllable and efficient than by controlling pollutant using lake region submerged plant；
4. passing through the water plant of rational deployment difference biological nature, various ecotype water plants can be given full play to
Detergent power, and avoid fluitante escape and excessive multiplication；
5. knowledge is naturally, operability is stronger, the scope of application is wider,.It can be effective without expensive construction and operating cost
Control the Plan Pollution Sources, the in picturesque disorder natural views that water plant is formed can also improve the ornamental value in lake, change significantly
Kind Water Environment In Lakes quality.
Detailed description of the invention
Fig. 1 is lakeside zone original section schematic diagram in lake region of the present invention；
Fig. 2 is lakeside zone topography reform diagrammatic cross-section in lake region of the present invention；
Fig. 3 is sectional view of the invention；
In figure: the lake region 1-, the first terrace 2-, 21- is resistance to flood type emergent aquactic plant, the second terrace 3-, and the drought-enduring type of 31- endures water plant
Object, 4- third terrace, the first depression 5-, 51- fluitante, the second depression 6-, 7- third depression, 71- loam, 72- sandy soil,
73- gravel, 74- blind pipe, 8- diversion pipe.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
As shown in Figures 1 to 3, a kind of lakeside zone intercepting purification pollution of area source；The first terrace is set gradually outward along lake region 1
2, the first depression 5, the second terrace 3, the second depression 6, third terrace 4, third depression 7, the bottom on third terrace 4 is embedded with water conservancy diversion
Pipe 8；The section of third terrace be it is trapezoidal, the elevation of third terrace increases step by step；The section in the first depression 5 and the second depression 6
It is inverted trapezoidal, the section in third depression 7 is concave shape, and the elevation in three-level depression increases step by step；It is planted on first terrace 2
Have it is resistance to flood type emergent aquactic plant 21, such as reed, thaliadeabata, form plant isolation strip, the water body in the first depression can be made full in water
When cover the first terrace from the gap of plant roots and stems and enter lake region, and the fluitante in the first depression can effectively be stopped down
Come；Kind is implanted with drought-enduring type emergent aquactic plant 31, such as canna, mullet grass on second terrace 3 and third terrace 4, makes pollutant
When flowing down infiltration with diameter or cover terrace, it is effectively absorbed and degrades；5 interior kinds of first depression is implanted with fluitante 51, such as
Eichhornia crassipes, big Piao etc., kind be implanted in the second depression 6 it is resistance to flood type emergent aquactic plant 21, kind be implanted with turf in third depression 7.
Preferably, third terrace can intercept and purify water with three-level depression.
First terrace 2, the first depression 5, the second terrace 3, the second depression 6, third terrace 4, third depression 7 form six
Grade intercepts purification system.
Lake region is closed on first terrace 2, highly between 1 normal water line of lake region and maximum water level, makes the first rank
Ground 2 is being exposed to the water surface most of the time, forms 2 water bodys being relatively isolated with the water body in the first depression.
The floor elevation in first depression 5 is less than 1 lowest water level line of lake region, because of ponding long-term in depression, the first depression
Water Man Shike covers the first terrace and enters lake region, and the second depression water Man Shike covers the second terrace into the first depression.
It is successively equipped with loam 71, sandy soil 72, gravel 73, blind pipe 74 under the turf, drilling is equipped on blind pipe 74, it is blind
Pipe 74 is connected to by diversion pipe 8 with the second depression 6.
Preferably, the lower infiltration that blind pipe is collected can import the second depression by diversion pipe pre-buried below third terrace.
The floor elevation of the gravel 73 is greater than the floor elevation in the second depression 6.
Further, when calculated flow into lake is larger, most of water flow covers third terrace into the second depression, small part water
It flows down bleed-through and crosses blind pipe and diversion pipe into the second depression；When water flow is smaller, water flow is infiltered under mainly passing through into the second depression.
Preferably, it when entering lake water stream by three-level depression and third terrace, is gradually intercepted and purifies, form lakeside zone
1 potent interception purification system.
A kind of construction method based on lakeside zone for intercepting purification pollution of area source, comprising the following steps:
1. regional choice: more than 1 ordinary water level of lake region, choosing the gradient along lake region 1 and be wider than 7m's less than 30 °, lakeside zone
Region constructs region as lakeside zone, as shown in Figure 1；
2. topography reform: successively excavating and accumulate outward along lake region 1, the first terrace 2, the first depression 5, the second terrace is arranged
3, the second depression 6, third terrace 4, third depression 7 form three-level depression and third terrace, as shown in Figure 2；
3. matrix and pipe network are laid with: burying blind pipe 74 in 7 bottom of third depression, 4 bottom of third terrace is excavated groove and spread
If diversion pipe 8, blind pipe 74 is connected to by diversion pipe 8 with the second depression 6；Secondly, being successively laid with gravel 73, sandy soil on blind pipe 74
72, loam 71, and drilling is opened up on blind pipe 74；
4. water plant planting: being planted on the first terrace 2 and resistance to flood type emergent aquactic plant 21, the second terrace 3 and third terrace 4
It is upper to plant drought-enduring type emergent aquactic plant 31, fluitante 51 is planted on the first depression 5, and the resistance to type that floods is planted on the second depression 6 and endures water plant
Object 21, Turf Culture on third depression 7.
2. the step is divided into following steps:
(2.1) at from 1~2m of lakeside zone water surface curve, one width of excavation along the lake is 2~4m, depth is 1~1.5m, cross
Section is the irrigation canals and ditches of inverted trapezoidal, forms the first depression 5；
(2.2) cubic metre of earth and stone being excavated is deposited in the left and right sides in the first depression 5, right side forms the first terrace 2, left
Side forms the second terrace 3, and makes the height on the first terrace 2 between 1 normal water line of lake region and maximum water level；
(2.3) at from 4~8m of lakeside zone water surface curve, excavate that a width is 1~2m, depth is 0.5~1m, cross section
For the irrigation canals and ditches of inverted trapezoidal, the second depression 6 is formed, makes the floor elevation in the second depression 6 lower than 1 maximum water level of lake region；
(2.4) cubic metre of earth and stone being excavated is deposited in the left and right sides in the second depression 6, right side forms the second terrace 3, left
Side forms third terrace 4；
(2.5) at from 6~12m of lakeside zone water surface curve, excavate that a width is 1~2m, depth is less than 1m, cross section and is
The irrigation canals and ditches of concave shape form third depression 7；
(2.6) cubic metre of earth and stone being excavated is deposited on third terrace 4.
3. the step is divided into following steps:
(3.1) in the embedded blind pipe 74 that diameter is 10cm, surface drilling aperture is 5mm in bottom in third depression 7；
(3.2) in the bottom on third terrace 4, the groove of lake region 1 is excavated along lakeside zone, is laid with and blind pipe 74 in the trench
The identical diversion pipe 8 of model, blind pipe 74 are connected to by diversion pipe 8 with the second depression 6；
(3.3) be successively laid on blind pipe 74 73, one layers of 40cm thickness of gravel of one layer of 30cm thickness sandy soil 72 and one layer 20
The loam 71 of~30cm thickness, so that third depression 7 is in a concave shape.
Embodiment
As described above, it is a kind of intercept purification pollution of area source lakeside zone construction method, by regional choice, topography reform,
Matrix and pipe network are laid with, 4 process procedures of water plant planting form.
(1) regional choice
More than the normal water line of lake, the region along the lake for choosing the gradient relatively slow (less than 30 °), lakeside zone wider (being greater than 7m)
Region is constructed as lakeside zone.
(2) topography reform
One width of excavation along the lake is 2~4m at from 1~2m of lakeside zone water surface curve, depth is 1~1.5m, cross section is
The cubic metre of earth and stone being excavated is deposited in the left and right sides of irrigation canals and ditches to form to form the first depression by the irrigation canals and ditches of inverted trapezoidal
One terrace and the second terrace, and make the height on the first terrace between normal water line and maximum water level；It is opened to the first depression
It digs after being formed, one width of excavation along the lake is 1~2m at from 4~8m of the lakeside zone water surface, depth is 0.5~1m, cross section is to fall
Trapezoidal irrigation canals and ditches make the floor elevation in the second depression lower than lake surface maximum water level, by what is be excavated to form the second depression
The cubic metre of earth and stone is deposited in the left and right sides of irrigation canals and ditches to form third terrace and the second terrace；After the second depression is excavated and to be formed,
From at 6~12m of the lakeside zone water surface one width of excavation along the lake be 1~2m, the irrigation canals and ditches that depth is 1m or so, cross section is inverted trapezoidal,
To form third depression, the cubic metre of earth and stone being excavated is deposited on third terrace.By excavate and accumulation make lakeside zone formed 3
Grade depression, 3 grades of terraces.
(3) pipe network and matrix are laid with
It is laid with the blind pipe of diameter 10cm or so, surface drilling (aperture 5mm or so) in third depression bottom, blind pipe is
Pvc pipe.In third depression, 1 groove is excavated at the both ends of irrigation canals and ditches along lakeside zone respectively, is laid with one and blind pipe type in the trench
Number identical pvc pipe, communicates third depression with the second depression as diversion pipe.After the completion of blind pipe and diversion pipe are laid with, blind
Pipe is laid with the cobble of one layer of 30cm thickness above, and the sandy soil of one layer of 40cm thickness are re-layed on boulder bed, are being laid with one layer on sandy soil
The loam of 20-30cm thickness is that third depression is in a concave shape.The groove for being laid with diversion pipe is buried using former earth excavation to be filled out and tamps.
(4) water plant planting
On the first terrace, plantation is resistance to floods type emergent aquactic plant, such as reed, thaliadeabata, ties up the first terrace by emergent aquactic plant
And then form plant isolation strip.Drought-enduring type emergent aquactic plant, such as thaliadeabata, mullet grass are planted on the second terrace, third terrace.
Turf Culture and resistance to type emergent aquactic plant is flooded respectively on third depression and the second depression.To rainy season set or from lake region, diversion is filled
When the first depression, the stronger floatings of detergent powers such as the Eichhornia crassipes, great Piao of 1/3~3/4 water surface area are planted in the first depression
Plant.
Claims (9)
1. a kind of lakeside zone for intercepting purification pollution of area source, it is characterised in that: set gradually the first terrace outward along lake region (1)
(2), the first depression (5), the second terrace (3), the second depression (6), third terrace (4), third depression (7), third terrace (4)
Bottom is embedded with diversion pipe (8)；The section of third terrace be it is trapezoidal, the elevation of third terrace increases step by step；First depression (5)
Section with the second depression (6) is inverted trapezoidal, and the section of third depression (7) is concave shape, and the elevation in three-level depression increases step by step
It is high；First terrace (2) on kind be implanted with it is resistance to flood type emergent aquactic plant (21), formed plant isolation strip, the second terrace (3) and third
Kind is implanted with drought-enduring type emergent aquactic plant (31) on terrace (4)；Interior kind of first depression (5) is implanted with fluitante (51), and second
Kind be implanted in depression (6) it is resistance to flood type emergent aquactic plant (21), kind be implanted with turf in third depression (7).
2. the as described in claim 1 lakeside zone for intercepting purification pollution of area source, it is characterised in that: first terrace (2), the
One depression (5), the second terrace (3), the second depression (6), third terrace (4), third depression (7) form six grades of interception purification systems
System.
3. the lakeside zone as described in claim 1 for intercepting purification pollution of area source, it is characterised in that: first terrace (2)
Height is between lake region (1) between normal water line and maximum water level.
4. the lakeside zone as described in claim 1 for intercepting purification pollution of area source, it is characterised in that: first depression (5)
Floor elevation is less than lake region (1) lowest water level line.
5. the lakeside zone as described in claim 1 for intercepting purification pollution of area source, it is characterised in that: be successively laid under the turf
There are loam (71), sandy soil (72), gravel (73), blind pipe (74), drilling is equipped on blind pipe (74), blind pipe (74) passes through diversion pipe
(8) it is connected to the second depression (6).
6. the lakeside zone as claimed in claim 5 for intercepting purification pollution of area source, it is characterised in that: the bottom plate of the gravel (73)
Elevation is greater than the floor elevation of the second depression (6).
7. a kind of construction method for the lakeside zone for intercepting purification pollution of area source, it is characterised in that: the following steps are included:
1. regional choice: more than lake region (1) ordinary water level, choosing the gradient along lake region (1) and be wider than 7m's less than 30 °, lakeside zone
Region constructs region as lakeside zone；
2. topography reform: successively excavating and accumulate outward along lake region (1), the first terrace (2), the first depression (5), second-order are arranged
Ground (3), the second depression (6), third terrace (4), third depression (7) form three-level depression and third terrace；
3. matrix and pipe network are laid with: burying blind pipe (74) in third depression (7) bottom, groove is excavated simultaneously in third terrace (4) bottom
It is laid with diversion pipe (8), blind pipe (74) is connected to by diversion pipe (8) with the second depression (6)；Secondly, successively being spread on blind pipe (74)
If gravel (73), sandy soil (72), loam (71), and drilling is opened up on blind pipe (74)；
4. water plant planting: planted on the first terrace (2) it is resistance to flood type emergent aquactic plant (21), the second terrace (3) and third rank
Drought-enduring type emergent aquactic plant (31) is planted on ground (4), plants fluitante (51) on the first depression (5), the second depression is planted on (6)
It is resistance to flood type emergent aquactic plant (21), Turf Culture on third depression (7).
8. the construction method of the lakeside zone as claimed in claim 7 for intercepting purification pollution of area source, it is characterised in that: the step
2. being divided into following steps:
(2.1) at from 1~2m of lakeside zone water surface curve, one width of excavation along the lake is 2~4m, depth is 1~1.5m, cross section
For the irrigation canals and ditches of inverted trapezoidal, formed the first depression (5)；
(2.2) cubic metre of earth and stone being excavated is deposited in the left and right sides of the first depression (5), right side forms the first terrace (2), left
Side forms the second terrace (3), and makes the height on the first terrace (2) between lake region (1) between normal water line and maximum water level；
(2.3) at from 4~8m of lakeside zone water surface curve, excavate a width be 1~2m, depth is 0.5~1m, cross section be fall
Trapezoidal irrigation canals and ditches are formed the second depression (6), make the floor elevation in the second depression (6) lower than lake region (1) maximum water level；
(2.4) cubic metre of earth and stone being excavated is deposited in the left and right sides of the second depression (6), right side forms the second terrace (3), left
Side forms third terrace (4)；
(2.5) at from 6~12m of lakeside zone water surface curve, excavate that a width is 1~2m, to be less than 1m, cross section be recessed to depth
The irrigation canals and ditches of shape are formed third depression (7)；
(2.6) cubic metre of earth and stone being excavated is deposited on third terrace (4).
9. the construction method of the lakeside zone as claimed in claim 7 for intercepting purification pollution of area source, it is characterised in that: the step
3. being divided into following steps:
(3.1) in the embedded blind pipe (74) that diameter is 10cm, surface drilling aperture is 5mm in bottom of third depression (7)；
(3.2) in the bottom of third terrace (4), lake region (1) groove is excavated along lakeside zone, in the trench laying and blind pipe
(74) the identical diversion pipe of model (8), blind pipe (74) are connected to by diversion pipe (8) with the second depression (6)；
(3.3) gravel (73) of one layer of 30cm thickness, the sandy soil (72) of one layer of 40cm thickness and one layer are successively laid on blind pipe (74)
The loam (71) of 20~30cm thickness, so that third depression (7) are in a concave shape.
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| CN116924575A (en) * | 2023-07-27 | 2023-10-24 | 河南省水利勘测设计研究有限公司 | Construction method of ecological wetland system for preventing and controlling agricultural non-point source pollution of plain river channel |
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