CN204298833U - Protecting slope ecology and recovery arrangement - Google Patents
Protecting slope ecology and recovery arrangement Download PDFInfo
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- CN204298833U CN204298833U CN201420579004.5U CN201420579004U CN204298833U CN 204298833 U CN204298833 U CN 204298833U CN 201420579004 U CN201420579004 U CN 201420579004U CN 204298833 U CN204298833 U CN 204298833U
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Abstract
The utility model discloses a kind of protecting slope ecology and recovery arrangement, solve the problem that the function singleness of existing protecting slope ecology and recovery existence, water conservation and sediment trapping effect need to be improved further.The utility model method bag open up side slope soil carry out smooth, lay Jute Geotextiles netting, broadcast sowing counterfort virescence plant seed and maintenance step.The utility model structure is simple, method is reliably easy, feasibility is high, there is excellent water suction moisturizing, prevent soil loss, change side slope soil top layer humidity, temperature and minimizing runoff and sediment rate, promote the effect of upper soll layer corrosion stability, for the healthy continued propagation of slope plants, the succession of community provide necessary guarantee.
Description
Technical field
The utility model relates to a kind of ecological protection arrangement, specifically a kind of protecting slope ecology and recovery arrangement.
Background technology
In south China mountain area, especially granite weathering crust district, collapsed gully erosion is most important erosion process.Under waterpower and gravity acting in conjunction, on a large amount of coombe basis of formation, there is the slight slope avalanche of larger area and subside in former hillside of having been lost, forms area large, the bare slope of plant growth land occupation condition difference.After corroding, runoff effect has been taken away the colluvial that avalanche gets off and has been piled up at the bottom of slope simultaneously, forms incompact-deposit bodies, easily causes further erosion hazard.Also be seen everywhere for the current domestic ecological restoring method of these bare side slopings.
Common employing collapse hilllock and colluvial repairing and treating technology mainly contains two types: one is engineering control measures, as part or all casting method of hilllock body is collapsed in removing, builds sand control dam or check dam and cuts slope open ladder work's journey at the toe collapsing hilllock body; Another kind is biological protection Treatment process, as man seed of forest grass, closes hillsides to facilitate afforestation and grow grass, lays soil and water conservation forest and Climbing Plant bank protection etc. in ditch.These measures generally are all being difficult to mutually take into account to destroying in the protection of slope stability, the land occupation condition improving vegetation growth and construction investment cost performance etc.
The side slope ecological renovation method of current employing comes with some shortcomings, and level process is cut in the domatic usual employing after casting, because surperficial soil property is soft, easily Xin Beng hilllock occurs, mating surface draining and slope protection.Because of its costly, be only applicable to middle and small scale collapse hilllock and protection critical facility needs.Sand control dam and check dam will have firmly ground, preferably be selected in the area collapsed beyond the scope of hilllock, but be often difficult to choose dam site desirable like this, in most cases still will build in and collapse in the scope on hilllock, in this case, the effect that dam body is subject to slope body lateral pressure is moved possibly.Man seed of forest grass, to close hillsides to facilitate afforestation and grow grass and Climbing Plant bank protection etc. according to the land occupation condition in hillside fields, need be administered.Red soil floor remains, and can developing property administer, plantation fruit tea etc., but if hillside fields is comparatively broken, red soil floor degrades hillside fields totally, and plant measures implements just more difficult, because the land occupation condition of vegetation cannot meet very well.Stable easily being buried by the erosion in later stage of the next firm colluvial of soil and water conservation forest is laid in ditch.Therefore, collapse hilllock and colluvial and administer and first want it is considered that improve domatic corrosion resistance and stability carrying out granite weathering crust, reduce domatic water and soil loss, improve land occupation condition and the growing environment of slope vegetation growth, for follow-up improvement provides basic guarantee simultaneously.
Current use mainly by the water penetration geosynthetics of synthetic fibers by acupuncture or braiding, one is non-woven geotextile type, and the application in civil engineering is more, has that tensile strength is high, good penetrability, a feature such as ageing-resistant, corrosion-resistant.But be mainly used in playing the effect of isolation, reinforcing, filtration, linear water drain etc. in civil engineering, be applied to side slope surface protection less, how to apply in reality and still process in the middle of constantly research.Another kind has imitative geotextiles type, be mainly used in particularly domatic rainwater-proof erosion aspect, but during practical application, because weaving mesh is little, water and soil conservation bank protection subtracts stream sediment trapping DeGrain applying to, and owing to being that synthetic material is not obvious to improving the liftoff condition of plant growth.
Summary of the invention
The purpose of this utility model is to solve the problems of the technologies described above, one is provided to arrange simply, simple installation, good water-retaining property, sediment trapping is effective, be beneficial to plant growth, improve protecting slope ecology and the recovery arrangement of emergence rate and seedling-growing time, bare side sloping after corroding for granite weathering crust, loose material is piled up the side slope formed and is carried out ecological protection and recovery, change side slope soil top layer humidity can be made, temperature and minimizing runoff and sediment rate, promote upper soll layer corrosion stability, for the healthy continued propagation of slope plants, the succession of community provides necessary guarantee, promote side slope back to nature as early as possible.
The utility model protecting slope ecology and recovery arrangement, comprise side slope, Jute Geotextiles netting is equipped with along slope soil surface described in limit, described Jute Geotextiles netting has the eyed structure become with parallel interlacing by warp, described eyed structure is diamond-mesh, plants and be implanted with plant in described diamond-mesh.
The gradient of described side slope is 5 °-20 °.
At the bottom of described warp and parallel and slope, horizontal line is all in 45° angle.
The length of side of described diamond-mesh is 3cm-7cm, and the area of mesh is 20cm
2-40cm
2, the stock footpath of per share warp and parallel is 2mm-6mm, the hole area of described mesh be area coverage 60% to 80% between.
When side slope soil is sandy soil, the area of described diamond-mesh is 20-28cm
2, the stock footpath of every stock-traders' know-how and parallel is 2mm-3mm; When side slope soil is clayey soil, the area of described diamond-mesh is 32-40cm
2, the stock footpath of per share warp and parallel is 5-6mm.
A kind of protecting slope ecology and recovering method, comprise the following steps:
One, carry out smooth to the side slope soil that need carry out ecological recovery;
Two, lay Jute Geotextiles netting along side slope soil surface, and fix with holdfast;
Three, in the eyed structure of Jute Geotextiles netting in side slope, counterfort virescence plant seed is broadcasted sowing;
Four, maintenance in 30 days is carried out to counterfort virescence plant, be specially: in side slope, carry out puggaree covering, and do temporary fixed, after plant to be planted grows to 4-5cm, take puggaree off.
Described Jute Geotextiles netting has the eyed structure become with parallel interlacing by warp, and described eyed structure is diamond-mesh.
The gradient of described side slope is 5 °-20 °, and at the bottom of described warp and parallel and slope, horizontal line is all in 45° angle.
The length of side of described diamond-mesh is 3cm-7cm, and the area of mesh is 20cm
2-40cm
2, the stock footpath of per share warp and parallel is 2mm-6mm, the hole area of described mesh be the mulching soil gross area 60% to 80% between.
When side slope soil is sandy soil, the area of described diamond-mesh is 20-28cm
2, the stock footpath of every stock-traders' know-how and parallel is 2mm-3mm; When side slope soil is clayey soil, the area of described diamond-mesh is 32-40cm
2, the stock footpath of per share warp and parallel is 5-6mm.
Finder furthers investigate existing Jute Geotextiles, become to have the Jute Geotextiles netting of eyed structure with warp and parallel telogenesis interlacing by Jute Geotextiles, be laid on side slope soil, through experimental studies have found that, the Jute Geotextiles that the utility model proposes overcomes the some shortcomings of similar technique to the method that slope ecological recovers, and has the following advantages:
1. Jute Geotextiles netting is directly overlayed coverage rate earth's surface adding earth's surface, decrease direct sunlight, the temperature of topsoil, humidity is obviously made to become mild, slow down sweltering heat or the change of the soil temperature in season that cools, the temperature difference of mitigation makes upper soll layer structure tend towards stability.Experiment shows that drop cloth makes the low 0.16-1.29 DEG C of monthly temperature drop at 8:00 in morning in April to August; September to March is then higher than bare land 0.16-0.84 DEG C; 14:00 at noon, the soil temperature of drop cloth community is all lower than bare land, and cooling extent is 0.35-4.07 DEG C.
2. topsoil is very fast to the speed of atmospheric evaporation moisture, covers the evaporation that Jute Geotextiles netting can decrease soil moisture, adds soil water sorption ability.Research shows, under the same degree of depth, contrasts not overlay area, the regional soil water content covering Jute Geotextiles netting wants high, have notable difference with not overlay area, the topsoil of drop cloth generally improves soil relative water content 1%-4% than contrast, and summer is up to 4.5%.When soil moisture content 5%-6%, drop cloth can make the relative water content of 5-10cm soil layer higher than bare land 0.7%, at 20cm soil layer then higher than bare land 2.8%.Decrease the evaporation of soil moisture, add soil water sorption ability.
3. tossa water imbibition is strong, and its areolation can also play stop rainwater, promotes moisture penetration, makes the effect that the hydraulic conductivity of soil improves.Research shows to cover the process of Jute Geotextiles netting than Mulching treatment total porosity is not high by 4%, and non-hollow billet space is low by 1.4%, and infiltration rate is high by 12.5%.Proved by indoor rainfall simulation experiment, even if at rainfall underlying surface moisture content close to saturated, still can increase by the infiltration capacity of 13.62%, wherein the eluvial horizon of soil be grown to granite, illuvium, parent rock horizon respectively increase by 8.73%, 18.40%, 13.06% infiltration capacity.Cover the infiltration rate that Jute Geotextiles netting can change whole rainfall underlying surface, this is significant for maintenance moisture improvement earth's surface microenvironment.
4. Jute Geotextiles is made primarily of tossa, and source natural energy-saving, meets environmental requirement instantly.Jute handwoven cloth forms certain organic matter after rough segmentation solution, as lignin, cellulose, pectin etc., containing nutritive elements such as a large amount of N, P, K.Research shows, after decomposing 240d under natural conditions, the region N element covering Jute Geotextiles loses 0.01% less relative to uncovered area N element, P element increases by 0.04%, K element increases by 0.05%, and overlay area N, P, K enrichment is obvious, shows that the decomposition of Jute Geotextiles also can be increase soil fertility.
5. the hydrophily of Jute Geotextiles makes there be good contact between its with soil surface with softness, and good contact ensure that Jute Geotextiles can be close to earth's surface.The mesh configuration of Jute Geotextiles makes the roughness on ground significantly increase simultaneously, significantly improves earth's surface microrelief.The silt that splash erosion produces is stopped by geotextiles mesh configuration, the regional depth directly do not covered in mesh is so just made to increase, Sediment Siltation is at mesh configuration edge, define pitting one by one, the formation in these holes increases the roughness on earth's surface again, and the formation in little puddle, earth's surface is similar to the fish scale pit in domatic erosion and torrent control works.Not only retain rainwater, also direct Littoral Barrier.Cover gunny cloth and reduce the flow velocity of slope runoff, significantly reduce the kinetic energy of slope runoff, kinetic energy reduce additionally reduce slope runoff take Sha Li, runoff percent sand is reduced, has obvious effect to soil conservation water conservation.Comparative trial shows: using the Jute Geotextiles of 120d can reduce run-off 87.45% than not laying, reducing sediment yield 99.88%; Use the Jute Geotextiles of 300-320d can reduce run-off 63%-66%, reduce sediment yield 97%.
6. lab simulation rainfall simulation experiment proves, the interception of Jute Geotextiles to >2mm, 1mm-2mm, 0.2mm-1mm, <0.2mm tetra-particle diameter silts reaches 84.77%, 85.95%, 87.10%, 60.97% than respectively; The silt primary particle size of its interception is all less than 0.2mm; According to interception ratio, more remarkable to oarse-grained interception result.Jute Geotextiles reduces the number of dropouts of each grade silt.
7. after pair need carry out the Slope leveling of ecological recovery, be that 45° angle lays Jute Geotextiles with horizontal line at the bottom of geotextiles graticule and slope, than horizontal paving mode given full play to every bar graticule sediment trapping ability and rainfall runoff is washed away weaken ability, the particularly domatic utilization for rainwater of construction in anxious sty, the rare area of rainfall.
8. the restorative procedure that the utility model proposes, can broadcast sowing counterfort virescence plant seed on domatic after laying Jute Geotextiles, the two combines and improves water and soil conservation comprehensive benefit further.Research shows Jute Geotextiles also having certain effect in Promoting plant growth development, and compared with the control, geotextiles shortens perennial ryegrass, tall fescue seed obtains seedling-growing time in covering, improves emergence rate, promptly can set up vegetation.Particularly drop cloth shortens the seedling-growing time of the dominant species ramie with obvious Soil and water conservation, and emergence rate improves 53%.
9. Jute Geotextiles needed raw material is easy to get, collapsible, convenient transportation, and construction technology is simple, equipment investment is low, belongs to labour-intensive engineering method, is convenient to launch construction in the area of execution conditions difference.And the size dimension of Jute Geotextiles can be adjusted in time according to on-the-spot side slop's conditions.
Inventor is on the basis of technique scheme, further restriction has been carried out to the concrete structure of Jute Geotextiles netting, namely being strict with mesh is diamond-mesh, be different from common square mesh, because inventor finds in an experiment, during for side slope protection, square mesh is poor because there is subsides ground property, there is the lower problem of silt interception in interception function too directly reason, diamond-mesh is then better owing to pasting ground property, and interception function power is level and smooth, the problems referred to above are had because then can be good at solving square mesh, thus reach the stable and object efficiently of Littoral Barrier.At the bottom of described warp and parallel and slope, horizontal line is all in 45° angle, this is mainly for the interception power gradient that the most rational problem is certain because side slope has, this angle of warp and parallel design has significant effect: (1) effectively can guide current in rainfall, avoid moisture content too much to store up to stay in side slope soil, or infiltration soil makes soil loosen loss; (2), effectively catching can be carried out to the soil particle swept away with current.(3), although Jute Geotextiles has soaking effect, if but the water yield is less, Negotiation speed is too fast, may affect Water-saving effect, experiment finds when horizontal line at the bottom of warp and parallel and slope is all in 45° angle, and can be good at playing water-absorbing-retaining effect, Jute Geotextiles nettle can absorb water at short notice fast, make the diameter in its burst of footpath become large, improve soil interception result simultaneously.
Further, because improvement of the present utility model is the side slope corroding rear bare side sloping and loose material accumulation formation for granite weathering crust, the soil characteristic of this kind of side slope is that cohesive strength is poor, quartz content is more, and when administering this kind of side slope, the parameters of the diamond-mesh of Jute Geotextiles nettle is also extremely important, the requirement length of side is 3cm-7cm, long, can weaken runoff alluviation interception result, too shortly can reduce water permeability; The area of mesh is 20cm
2-40cm
2, the area of mesh reduces the interception result to raindrop splash erosion silt, and area is too small can reduce silt interception amount; The stock footpath of per share warp and parallel is 2mm-6mm, crosses and slightly can reduce netting twine mildness, subsides ground effect is reduced, crosses detailed rules and regulations and can be deteriorated to the interception result of Large stone silt; The hole area of described mesh be the mulching soil gross area 60% to 80% between, be preferably 70%.
Further, the different in kind of soil, the specific requirement of its ecological management is not identical yet, and it is large that sandy soil has sand grain, the feature that cohesive strength is little, when side slope soil is sandy soil, in order to avoid erosion amount is excessive, the generation that interception result is deteriorated, the screening area of described diamond-mesh can not be excessive, stock footpath also should correspondingly attenuate, and so just can be close to earth's surface.Therefore the area controlling diamond-mesh is 20-28cm
2, the stock footpath of every stock-traders' know-how and parallel is 2mm-3mm; And clayey soil to have sand grain little, cohesive strength is large, many features containing vegetation, when side slope soil is clayey soil, in order to avoid fine particle silt is with Loss in Runoff, the screening area of described diamond-mesh should suitably become large, and stock footpath should be thicker, better could filter runoff and more effectively transform microrelief like this.Therefore, the area controlling diamond-mesh is 32cm
2to 40cm
2scope, the stock footpath of per share warp and parallel is the scope of 5mm to 6mm.
Beneficial effect:
The utility model structure is simple, and method is reliable, and feasibility is high.By broadcasting sowing counterfort virescence plant seed in the side slope being equipped with jute handwoven cloth netting, and carry out reasonable maintenance, promote that plant production is grown, jute handwoven cloth netting is utilized to play water suction moisturizing, prevent soil loss, change side slope soil top layer humidity, temperature and minimizing runoff and sediment rate, promote the effect of upper soll layer corrosion stability, for the healthy continued propagation of slope plants, the succession of community provide necessary guarantee.
Accompanying drawing explanation
Fig. 1 is the utility model arrangement schematic diagram.
Fig. 2 is the sediment trapping schematic diagram of the diamond-mesh of Jute Geotextiles nettle.
Wherein, 1-Jute Geotextiles netting, 2-warp, 3-parallel, 4-side slope, 5-diamond-mesh, 6-holdfast.
Embodiment
The utility model arrangement is see Fig. 1 and Fig. 2, the gradient of side slope 4 is 5 °-20 °, Jute Geotextiles netting 1 is equipped with along side slope 4 soil surface, described Jute Geotextiles netting 1 has the eyed structure become with parallel 3 interlacing by warp 2, described eyed structure is diamond-mesh 5, plants and be implanted with plant (not shown) in described diamond-mesh 5.Described warp 2 and parallel 3 all in 45° angle, are shown in Fig. 2, a=45 ° with horizontal line at the bottom of slope.The length of side of described diamond-mesh 5 is 3cm-7cm, and the area of mesh is 20cm
2-40cm
2, the stock footpath of per share warp 2 and parallel 3 is 2mm-6mm, the hole area of described diamond-mesh 5 be area coverage 60% to 80% between.When the soil of side slope 4 is sandy soil, the area of described diamond-mesh 5 is 20-28cm
2, the stock footpath of per share warp 2 and parallel 3 is 2mm-3mm; When the soil of side slope 4 is clayey soil, the area of described diamond-mesh 5 is 32-40cm
2, the stock footpath of per share warp 2 and parallel 3 is 5-6mm.
Protecting slope ecology and recovering method embodiment:
One, carry out smooth to side slope 4 soil that need carry out ecological recovery;
Two, lay Jute Geotextiles netting 1 along side slope 4 soil surface, should Jute Geotextiles netting 1 be made to press close to during laying domatic as far as possible, and fix with holdfast 6;
Three, in the eyed structure of Jute Geotextiles netting in side slope, counterfort virescence plant seed is broadcasted sowing;
Four, maintenance in 30 days is carried out to counterfort virescence plant, be specially: in side slope, carry out puggaree covering, and do temporary fixed, after plant to be planted grows to 4-5cm, take puggaree off.After construction, 30d planted agent ensures the moisture supply of slope plant.After after plant growth is stable, the routine servicing stage can be entered.Maintenance comprises sprinkling irrigation watering, damage by disease and insect prevents and Plant growth control measure.
Contrast experiment's example:
The utility model protecting slope ecology and recovery arrangement refer to table 1-table 5 to the impact of interception ratio under different stock footpath, screening area and the gradient.
R is compared in definition interception
i
M in formula
b: do not cover Jute Geotextiles sediment loss amount, m
c: cover Jute Geotextiles sediment loss amount, R
iinterception ratio.
Table 1: fixed mesh size is 35cm
2time clay soil different stock footpaths action effects
Table 2: sandy soil different stock footpaths action effect when fixed mesh size is 25cm2
Table 3, when fixing stock footpath is 6mm, clay soil different mesh area action effect
Table 4, when fixing stock footpath is 3mm, sandy soil different mesh area action effect
Table 5: comparative example:
Known according to table 1, be about 35cm in fixed network hole area size
2time, clayey soil is more suitable for the Jute Geotextiles of thick stock footpath (5-6mm), known according to table 2, is about at 25cm in fixed network hole area size
2time, sandy soil is more suitable for the Jute Geotextiles of thin stock footpath (2-3mm), and as shown in Table 3, when fixing stock footpath is about 6mm, clayey soil is more suitable for large mesh area (32-40cm
2) Jute Geotextiles, as shown in Table 4, when fixing stock footpath is about 3mm, sandy soil is more suitable for the less (20-28cm of mesh area
2) Jute Geotextiles.Consolidated statement 5 comparative example is known, and best value Jute Geotextiles mesh size is 20-40cm
2, stock footpath is 2-6mm, optimal application gradient 5-20 °.
Claims (4)
1. a protecting slope ecology and recovery arrangement, comprise side slope, it is characterized in that, Jute Geotextiles netting is equipped with along side slope soil surface, described Jute Geotextiles netting has the eyed structure become with parallel interlacing by warp, and described eyed structure is diamond-mesh, plants and be implanted with plant in described diamond-mesh, the length of side of described diamond-mesh is 3cm-7cm, and the area of mesh is 20cm
2-40cm
2, the stock footpath of per share warp and parallel is 2mm-6mm, the hole area of described mesh be area coverage 60% to 80% between.
2. protecting slope ecology as claimed in claim 1 and recovery arrangement, it is characterized in that, the gradient of described side slope is 5 °-20 °.
3. protecting slope ecology as claimed in claim 1 and recovery arrangement, is characterized in that, at the bottom of described warp and parallel and slope, horizontal line is all in 45° angle.
4. protecting slope ecology as claimed in claim 3 and recovery arrangement, it is characterized in that, when side slope soil is sandy soil, the area of described diamond-mesh is 20-28cm
2, the stock footpath of every stock-traders' know-how and parallel is 2mm-3mm; When side slope soil is clayey soil, the area of described diamond-mesh is 32-40cm
2, the stock footpath of per share warp and parallel is 5-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579004.5U CN204298833U (en) | 2014-09-30 | 2014-09-30 | Protecting slope ecology and recovery arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579004.5U CN204298833U (en) | 2014-09-30 | 2014-09-30 | Protecting slope ecology and recovery arrangement |
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| Publication Number | Publication Date |
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ID=53104382
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294830A (en) * | 2014-09-30 | 2015-01-21 | 华中农业大学 | Side slope ecological protection and recovery method and arrangement structure |
| CN107614794A (en) * | 2015-07-03 | 2018-01-19 | 株式会社库林卡 | The domatic maintenance construction method of coal ash is used |
-
2014
- 2014-09-30 CN CN201420579004.5U patent/CN204298833U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294830A (en) * | 2014-09-30 | 2015-01-21 | 华中农业大学 | Side slope ecological protection and recovery method and arrangement structure |
| CN107614794A (en) * | 2015-07-03 | 2018-01-19 | 株式会社库林卡 | The domatic maintenance construction method of coal ash is used |
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