CN101761086B - Three-dimensional net greening technique for roadbed side slope - Google Patents

Abstract

The present invention discloses a three-dimensional net greening technique for roadbed side slope, comprising the following steps of: the cleaning and trimming of a working plane; net paving and net nailing: unfolding a three-dimensional net from the top of a slop down, burying the top end of the net into a drainage ditch at the top of the slope, overlapping each two adjacent nets and fixing the overlapped nets with a U-shaped nail made from soft iron; the spraying seeding of fertile soil: spraying and seeding fertile soil of 5cm thick into the hollow chamber of the three-dimensional net, substantially leveling a foreign soil layer with the surface of the three-dimensional net, wherein the granules in the sprayed fertile soil are not larger than 25mm; the seeding of plant seed; and later maintenance. As a three-dimensional net is paved on a roadbed side slope to green and protect the slope, the grown sod forms a firm interlocking system with the three-dimensional vegetation net and the mud attached on the sod to form a composite green slope protection layer to effectively prevent the loss of water and soil and protect the roadbed, and simultaneously, the ecological environment in the road region is improved.

Description

The three-dimensional net greening technique of roadbed side slope

Technical field

The present invention relates to the job practices of roadbed side slope greening in a kind of subgrade construction, the construction technology of especially afforesting greater than the side slope of 10m or 2-3 level to slope height.

Background technology

Greening is an important content in the expressway construction.Highway Construction Project Based environmental evaluation standard (trying) (JTJ005-96) is protected design specifications (JTJ/T006-98) etc. with highway environment; Clear and definite regulation: " should pay attention to expressway greening design; fully investigate engineering geology along the line, topography and geomorphology, weather conditions, vegetation species and coverage scale, water and soil conservation present situation etc.; select plants such as the flowers and plants that are fit to local growth, shrub, arbor for use; to side slope of embankment, get, spoil ground etc. afforests, prevent erosion " and coordinate with surrounding enviroment, reach the efficient combination of greening, fine, environmental protection.

The late 20th century; Ecological speedway becomes the up-to-date target of expressway construction; The notion of " ecological afforestation ", " ecological recovery ", " vegetation recovery " is incorporated into the expressway greening engineering gradually; " greening " comes from the expanded range of engineering, included in ecology, botany, the ecosystem learn, the theory and practice in field such as learn, the ecological afforestation that little high speed, the profound speedway in Guangdong are thought in Beijing-Shanghai Expressway, Yunnan promptly is an example.Above speedway begins to consider the greening scheme when route selection and first establishing, adhere to the minimize destruction theory, and pleasantly landform, landforms are taked in design, utilizes adventitious plant to combine indigenous plant to make up composite plant group, and afforestation effect is good at present.

Roadbed side slope is the big event of expressway greening always, as administers bad meeting and cause ecocatas-trophe, especially South Chinas such as soil erosion, landslide, mud-rock flow, and amount of precipitation is big, and the heavy rain blast is violent.

Summary of the invention

In order to overcome above-mentioned deficiency, the object of the present invention is to provide a kind of soil erosion, the landslide that can effectively avoid roadbed side slope, thereby improve the application life of roadbed and the three-dimensional net greening technique of the roadbed side slope of beautifying the environment.

For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: the three-dimensional net greening technique of roadbed side slope, and its technical step comprises:

(1) cleaning of the scope of operation and finishing: remove scope of operation foreign material and loosening sillar; Corner angle to domatic corner and top, slope are repaired, and make it curved, the camber average out to ± 15cm of the scope of operation, and maximum is no more than ± 30cm;

(2) gutter is set: at top, slope, the sough of side slope;

(3) lapping, nail net: pasting and domaticly from top to bottom three dimensional network is being launched, the top of net is embedded in the Po Ding gutter, and adjacent two nets are overlap joint each other, and fixes with the U sprig that soft iron is processed;

(4) loam is sowed grass seeds by duster: utilizing sows grass seeds by duster loam in the mesh cavity of three dimensional network, and the thickness of the loam of sowing grass seeds by duster is not less than 5cm, and soil moved in to improve the original layer wire side basic and three dimensional network maintains an equal level; Particle in the loam of being sowed grass seeds by duster is not more than 25mm;

(5) sow vegetable seeds: after the loam layer was watered, the humid soil layer depth, was sowed grass seeds by duster vegetable seeds artificial broadcast or hydraulic pressure on the loam layer after watering is soaked into and sunk in fact then to 15cm;

(6) maintenance: after the vegetable seeds sowing is accomplished, water, reduce the number of times that waters behind the germinating growth Cheng Ping gradually to keep ground moistening.

In the said step (1), whenever domatic open a transverse groove,, three dimensional network is strengthened to domatic adhesive power to increase domatic roughness at a distance from certain altitude said.

In the said step (3), the lap width that adjacent two nets overlap each other is between 10 centimetres to 20 centimetres.

In the said step (4), the preparation method of said loam is: the table soil that the excavation of 60%-80% is deposited stirred with other organic fertile mixing, carried out airing then, pulverized, sieves and remove greater than just having processed loam behind the particle of 25mm.

In the said step (5), said vegetable seeds adopts can resist poor environment, grow herbaceous plant seeds and the shrub seeds that is difficult for degeneration, well developed root system rapidly.The herbaceous plant bank protection can slow down rainwater to domatic face erosion and the rill erosion that causes in the early stage because of higher coverage scale is arranged.Shrub slope protection, after plant reaches full growth, the expansion of the hat width of cloth; Can reach effective domatic covering, root system gos deep into playing in domatic soil layer or the rock crevice effect of biological anchor pole, as adopting the mesquite bank protection; Its rhizobium have nitrogen fixation; Can progressively increase domatic soil fertility, thereby progressively improve domatic soil texture, help the growth of other plant.

Beneficial effect of the present invention is: owing to lay the mode that three dimensional network carries out counterfort virescence at roadbed side slope; Turf after become living can make three-dimension vegetative net and turf and the earth that adhered to forms a firm interlocking system; Thereby effectively prevent erosion; The protection roadbed forms domatic green composite protection layer, reaches the purpose of improving territory, road ecological environment simultaneously.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain:

Fig. 1 is technology construction process figure of the present invention.

The specific embodiment

As shown in Figure 1, the three-dimensional net greening technique of roadbed side slope, its technical step may further comprise the steps:

(1) scope of operation cleaning and finishing

Be to guarantee three dimensional network and domatic combining closely, domatic after delivering for a check adopts artificial careful leveling, removes rubbish and obstructions such as all rocks, broken clod, tree root.Remove scope of operation foreign material and loosening sillar, the corner angle on domatic corner and top, slope are repaired, make it curved, as far as possible that the scope of operation is smooth.Guarantee the camber average out to ± 15cm of the preceding scope of operation of construction, maximum is no more than ± 30cm; To the suitable earthing tamped backfill in low-lying place, the counter-slope section is disappeared be as the criterion to be filled to, with good conditionsily can whenever domatic open a transverse groove at a distance from certain altitude, to increase domatic roughness, three dimensional network is strengthened to domatic adhesive power.

(2) gutter construction

Scope of operation drainage system must be provided with the growing environment that whether appropriately and rationally is directly connected to scope of operation vegetation, and for length, big side slope, sloping top, toe and platform all need be provided with the gutter.And consider according to the size of scope of operation discharge whether the slope drainage ditch is set, guarantee that rainwater is not at domatic formation runoff.

(3) lapping, nail net

Pasting and domaticly from top to bottom three-dimension vegetative net is being launched, the top of net is embedded in the Po Ding gutter, and adjacent two volume nets are overlap joint each other, and requiring lap width is 10 centimetres, and fixes with the U sprig that soft iron is processed, and netted facing up during laying laid along the slope; When lapping, to forbid net is strained.

(4) loam is sowed grass seeds by duster

Utilization is sowed grass seeds by duster loam is sowed grass seeds by duster in the mesh cavity of three dimensional network; The table soil of loam employing 70% and 30% the fertilizer that becomes thoroughly decomposed; And be suitable for to add some water-loss reducers and adhesive, and mix to stir forming, carry out airing before the use, pulverize, sieve and remove particle greater than 25mm.The thickness requirement of soil moved in to improve the original is not less than 5cm, and the soil moved in to improve the original layer maintains an equal level with the three dimensional network convex surface basically mutually, and guarantees domatic smooth-going.Do not have net Bao Lubao, empty bag or press the bag phenomenon.Add organic fertilizer in the earthing, can improve the crumb structure of soil. create the growing environment that is more conducive to plant.For guaranteeing that earthing is full of net bag, and do not press bag, through repeatedly banketing on a small quantity and abundant trickle, stable do not expose to the net bag till.

(5) vegetable seeds of sowing grass seeds by duster

The mode that adopts hydraulic pressure to sow grass seeds by duster; Spore, draft, shrub seeds are sowed grass seeds by duster on the loam layer; Sowing grass seeds by duster, it is permeable to water before the seed, and the humid soil layer depth is to 15cm, and the pipeline of the face of land and underground hair suction pipe water is interconnected; Otherwise can cause underground hair suction pipe water can't rise to the top layer, plant can dry up because of lack of water.

(6) maintenance

Sow grass seeds by duster and water to keep ground moistening after accomplishing, reduce the number of times that waters behind the germinating growth Cheng Ping gradually.In time topdress, every month 1-2 time, can select fertilizer for use, execute between inorganic fertilizer.Carry out inspection at ordinary times, required in every month to carry out disease and pest prevention 1-2 time, guarantee not have the disease and pest phenomenon.

The construction principle: the three dimensional network quality is loose, soft, and the mesh of three dimensional network is cylindrical structure or surrounds the cavity that forms by four sidewalls.Loam and vegetable seeds are sowed grass seeds by duster in the mesh space, can effectively not prevent erosion before the Cheng Ping in vegetation, protect the domatic erosion of avoiding wind, rain, flood; After on the grass-seed kind, it can protect securely grass-seed be evenly distributed in domatic on, and can make the root system of plant can pass comfortable, neat, the balanced growth of convex-concave net bag, and combine better with side slope soil; Turf after become living can make three-dimension vegetative net and turf and the earth that adhered to forms a firm interlocking system, thereby effectively prevents erosion, and protects roadbed, forms domatic green composite protection layer, reaches the purpose of improving territory, road ecological environment simultaneously.

Embodiment: utilize the present invention that the roadbed side slope in wide Chinese parasol tree speedway river mouth to platform Duan Lu territory is carried out counterfort virescence; Repeatedly field investigation is found; The zonality forest cover type in wide Chinese parasol tree speedway river mouth to platform Duan Lu territory is the subtropical evergreen broad-leaf forest, but wildwood is destroyed totally.Select for use 15 kinds of shrub seedses and 16 kinds of herbaceous plant seeds to afforest during greening, effectively prevented soil erosion, protected roadbed, also beautify the environment simultaneously.

Claims (1)

1. the three-dimensional net greening technique of a roadbed side slope, it is characterized in that: its technical step comprises:

(1) cleaning of the scope of operation and finishing: remove scope of operation foreign material and loosening sillar; Corner angle to domatic corner and top, slope are repaired, and make it curved, the camber average out to ± 15cm of the scope of operation, and maximum is no more than ± 30cm; Whenever domatic, open one at a distance from certain altitude and can improve domatic roughness with the transverse groove of raising three dimensional network to domatic adhesive power;

(2) gutter is set: top, slope, toe in side slope are provided with the gutter;

(3) lapping, nail net: pasting and domaticly from top to bottom three dimensional network is being launched, the top of net is embedded in the Po Ding gutter, and adjacent two volume nets are overlap joint each other, and lap width and is fixed with the U sprig that soft iron is processed between 10 centimetres to 20 centimetres;

(4) loam is sowed grass seeds by duster: utilizing sows grass seeds by duster loam in the mesh cavity of three dimensional network, and the thickness of the loam of sowing grass seeds by duster is not less than 5cm, and soil moved in to improve the original layer wire side basic and three dimensional network maintains an equal level; Particle in the loam of being sowed grass seeds by duster is not more than 25mm; The preparation method of said loam is: the table soil that the excavation of 60%-80% is deposited stirred with other organic fertile mixing, carried out airing then, pulverized, sieves and remove greater than just having processed loam behind the particle of 25mm;

(5) sow vegetable seeds: after the loam layer was watered, the humid soil layer depth, was sowed grass seeds by duster vegetable seeds artificial broadcast or hydraulic pressure on the loam layer after watering is soaked into and sunk in fact then to 15cm; Said vegetable seeds adopts can resist poor environment, grow herbaceous plant seeds and the shrub seeds that is difficult for degeneration, well developed root system rapidly;

(6) maintenance: after the vegetable seeds sowing is accomplished, water, reduce the number of times that waters behind the germinating growth Cheng Ping gradually to keep ground moistening.

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