CN102972197A - Vegetation recovery method for nonferrous metal mining wasteland - Google Patents
Vegetation recovery method for nonferrous metal mining wasteland Download PDFInfo
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- CN102972197A CN102972197A CN2012105552729A CN201210555272A CN102972197A CN 102972197 A CN102972197 A CN 102972197A CN 2012105552729 A CN2012105552729 A CN 2012105552729A CN 201210555272 A CN201210555272 A CN 201210555272A CN 102972197 A CN102972197 A CN 102972197A
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- 238000011084 recovery Methods 0.000 title abstract description 5
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Landscapes
- Cultivation Of Plants (AREA)
Abstract
The invention provides a vegetation recovery method for a nonferrous metal mining wasteland, which comprises the following steps: 1), terrain consolidation; 2), heavy metal stabilizing disposal; 3), shallow acid-base improvement and flexible impervious isolation: spraying the mixture of an acid-base modifier, a vegetative matrix and resin to a wasteland surface; 4), setting a section of drainage ditch; and 5), laying a vegetation cushion: laying a vegetation cushion on a slope surface and fixing the vegetation cushion with an anchor rod. The method provided by the invention combines the terrain consolidation, the heavy metal stabilizing disposal, the shallow acid-base improvement, the surface layer impervious isolation, wasteland vegetation recovery and other technologies to prevent heavy metal ions from relocating and diffusing to pollute the environment; the wasteland vegetation system is recovered; and the vegetation recovery method is high in standardization and industrialization level, is 2 to 3 times higher than a conventional soil replacement spray-sowing greening method in efficiency, low in governance cost, suitable for the popularization and application of ecological environmental management of large-area nonferrous metal mining wastelands, and remarkable and stable in effect.
Description
Technical field
The invention belongs to the restoration of the ecosystem field, be specifically related to the processing method of a kind of nonferrous metal mine abandoned land revegetation.
Background technology
Non-ferrous metal is national economy, people's daily life and national defense industry, the requisite basic material of scientific technological advance and important strategic materials.Characteristics of China YouSe metals resources are that grandidierite is many, and the grade that has is lower, in the processes such as nonferrous metallic ores exploitation, smelting, processing, produce the solid waste such as a large amount of barren rocks, mine tailing, slag.China's present non-ferrous metals industry solid waste year generation is estimated 2-3 hundred million t, and non-ferrous metals industry solid waste comprehensive utilization ratio is still on the low side, and a large amount of solid waste are piled up and disposed.Occupied and the damage in a large amount of soils, geomorphologic landscape has suffered destruction, and peripheral ecotope is formed potentially contaminated, the non-ferrous metal mining area forms a large amount of abandoned lands.
The abandoned land comprehensive regulations such as solid waste stack-up-yard such as nonferrous metal mine refuse dump, barren rock stockyard, Tailings Dam, an outstanding difficult problem are to prevent the harmful toxic matter migration and recover heap body vegetation.Nonferrous metal mine abandoned land leaching by precipitation percolate becomes highly acid or strong basicity more, and the revegetation difficulty is large.Harmful toxic matter easily moves with leaching by precipitation, pollutes Soil Surrounding and water body.
Summary of the invention
The objective of the invention is the problem for this area existence, nonferrous metal mine abandoned land method for recovering vegetation is proposed, the nearly physical relief of abandoned land is put, is related in order the technology combinations such as the processing of danger metal Shallow Stability, the improvement of shallow-layer acid-base neutralization, top layer antiseepage isolation, abandoned land revegetation, by intercepting leaching by precipitation, stablize shallow-layer and relating to the danger metal and improve the top layer acid-base value, promote the top layer revegetation, reduce risk of environmental pollution.
For achieving the above object, concrete technical scheme is:
1, the method for a kind of nonferrous metal mine abandoned land revegetation comprises step:
1) landform arrangement: the nonferrous metal mine abandoned land is carried out the landform arrangement, and it is domatic to form step, the level land carry out height dig low fill and lead up whole.
2) heavy metal is stable processes: evenly use heavy metal stabilizer in the 20-30cm degree of depth of abandoned land surface;
3) shallow-layer soda acid improvement and flexible barrier isolation: with the soda acid modifying agent, plant living matrix and the resin blend thing sprays in abandoned land surperficial;
4) drain dyke is set: dig intercepting drain in domatic outer rim, excavate the drain ditch on the domatic platform and the level land under domatic, at intercepting drain and drain ditch surface spraying polyurethane resin slurry;
5) lay the vegetation pad: domatic laying fill-type vegetation pad is also fixed with anchor pole.
Wherein, the step slope length 5-8m in the described step 1), the wide 1-3m of step platform; Carry out height for smooth abandoned land and dig the low whole processing of filling and leading up.
Abandoned Land of Mine is mainly the waste-rock yard piling up barren rock, mine tailing, metallurgical slag the like waste and form, Tailings Dam, tailings storehouse etc.Process if discarded object is piled up, close meeting formation hillside behind the storehouse, by the landform arrangement, with sloping surface arrangement in echelon, the top is platform; If the discarded object backfill stores, close the level land that is formed with hollow behind the storehouse more, put in order by landform, make Land leveling.The angle of self-assembling formation was natural repose angle after discarded object was piled up.
Wherein, also be included in domatic toe in the described step 1) ecology bag barricade is set, the high 0.6-1.2m of ecology bag barricade.
Wherein, heavy metal stabilizer is one or more in iron, molysite, ferrous salt, carbonate, phosphate, clay, hydroxide, sulphide, the molybdate described step 2).Iron simple substance and mineral salt thereof are the arsenic stabilizing agents that are most widely used.As and Fe have formed unbodied ferric arsenate (FeAsO
4H
2O), and/or insoluble secondary oxide mineral, such as scorodite (FeAsO
42H
2O).Carbonate, phosphate or clay can pass through the forms such as chemisorbed, precipitation and reduce the mobility of Cu in soil.Zinc can form precipitation with hydroxide, carbonate, phosphate, sulphide, molybdate and other several anion, also can form complex compound with organic ligand, thereby moving it property weakens.
Wherein, the heavy metal stabilizer consumption is the 15-20% of abandoned land processing layer volume described step 2).Abandoned land top layer uniform fold heavy metal stabilizer adopts to turn over to harrow stabilizing agent and shallow-layer discarded object are mixed, and the rake mode is manually turned in domatic upper employing, adopts machinery to turn over the rake mode, maintenance 5-7 days on the level land.
Wherein, soda acid modifying agent in the described step 3), plant living matrix and the resin blend thing comprises: 5-10% soda acid modifying agent, the float stone of 10-15%, 5-10% waterborne polyurethane resin, 20-30% plant the soil of living matrix, 5-40%, the water of 20-30%.Described soda acid modifying agent is alkaline modifying agent or acid modifying agent, and described acid modifying agent is one or more in biological organic fertilizer, superphosphate, the acid-sludge, and described alkaline modifying agent is lime and/or caustic soda.
In the described step 4), at domatic outward flange intercepting drain is set, the drain ditch is set on the platform, intercepting drain furrow width 40-100cm, the arc ditch of ditch depth 20-50cm; Draining furrow width 30-60cm, the arc ditch of ditch depth 20-30cm.The drain ditch links to each other with intercepting drain.The level land arranges the drain ditch, and the drain ditch is the arc ditch of wide 80-120cm, ditch depth 40-60cm.After artificial or machinery is ditched, the polyurethane resin slurry is sprayed on the furrow bank coating thickness 5-8cm.
Wherein, the polyurethane resin slurry in the described step 4) is mixed with the polyurethane resin slurry for according to mass ratio the fine sand of soil, 10-15% waterborne polyurethane resin and the 30-40% of 20-30%, the water of 15-40% being mixed.
Wherein, described step 5) lay in and also be included in filled type behind the vegetation pad and plant the step that is covered with the nursery stock of planting, described nursery stock is one or more the annual nursery stock in rose, tatarian dogwood, periploca spium, shrubby flase indigo, meadow sweet, caragana microphylla, Chinese photinia, cloves, Ligustrum quihoui, locust tree, elm, Elaeocarpus decipiens, Luan Shu, willow, leaflet Chinese wax, wintercreeper euonymus, Boston ivy, humid euphorbia, Chinese pine, paper mulberry, the little seeds of a tung oil tree, silk tree, shrub lespedeza, tree-of-heaven, the wet-land pine tree.
Described vegetation pad is the left, center, right symmetrical structure, the fill-type vegetation pad that becomes a plurality of filler bags to form with the surface layer flush joint by bottom.Primer is the polypropylene filament geotextiles, and surface material is that high density polyethylene (HDPE) three pins are through netting.Vegetation pad fabric width 320cm is comprised of 8 filling bags, filling bag width 12-24cm, stitching bandwidth 3-5cm between filling tape, the long 60-80cm of left and right sides filling bag, middle filling bag 130-150cm, the wide 10-30cm of vertical feeding-passage between both sides filling bag and middle filling bag.The vegetation mat surface layer has 4 of charging apertures, charging aperture size 10*10cm.Every width of cloth vegetation is lined with 3 of safety ropes, and safety rope is fixed in the suture zone, is the glass fiber rope of direct 2cm, and per two groups of filling bags arrange one of safety rope.Every width of cloth vegetation pad arranges 15 of boltholes altogether, 9 of main boltholes, 6 of secondary boltholes, pore size 3cm.The preferred wide 17cm of filling bag or 24cm, the stitching width 5cm between filling bag.
Lay filled type vegetation pad on domatic from top to bottom, with anchor pole with the vegetation pad be anchored at domatic on.The Bower Anchor bar adopts direct 12mm screw-thread steel, length 60cm, and secondary anchor pole adopts 12mm screw-thread steel, length 40cm.Vegetation pad safety rope hanging/and is fixed with the band colligation on the Bower Anchor bar.The packing material preparation.Plant in the living base material for 1 cubic metre, mix in proportion: plant living matrix 40-60%, float stone 5-10%, perlite 5-10%, plant loam 30-50%, plant and also add slow-release fertilizer 800-1200g, water-loss reducer 700-900g, adhesive 500-800g in the living base material for per 1 cubic metre.Also comprise in the seed of plant seed Festuca Arundinacea, rye, shrubby flase indigo, the twigs of the chaste tree, crested wheat grass, shrub lespedeza, pink indigo, locust tree, shrub lespedeza, caragana microphylla, coronule flower, coreopsis, tree-of-heaven one or more.Different according to the region, select suitable plant seed.
With mix plant living base material and water is modulated into pulpous state, solid content 70%.Adopt grouting pump that the pulpous state for preparing is planted living base material, the charging aperture by the vegetation pad is injected in the filling bag, and filling is full.
The described nursery stock of planting is covered with the 3-8 seedlings of planting for planting at each.
Also comprise after the described step 5) and spray the step of planting living base material.Living spraying method construction after implementing fill-type vegetation pad greening construction and finishing, can be implemented to plant in the solid waste stockyard (in scenic spot, protection zone, residential area, the road visual range) that vegetation quality and view are had relatively high expectations.To vegetation quality and the less demanding solid waste of view stockyard, need not carry out again the spraying method construction.
Beneficial effect of the present invention is:
The method that the present invention proposes combines the means such as landform arrangement, heavy metal stabilization processing, the improvement of shallow-layer acid-base neutralization, top layer antiseepage isolation, abandoned land revegetation, fixed heavy metal ion, prevent heavy metal diffusion and contaminated environment, recover non-ferrous metal mining area abandoned land vegetation; Standardization, the industrialization process of the restoration of the ecosystem of nonferrous metal mine abandoned land have been advanced, more traditional alien earth sparging greening method, efficient improve 2-3 doubly, and comprehensive regulation expense reduces, be applicable to the restoration of the ecosystem of large tracts of land abandoned land and apply, regulation effect is remarkable, stable.
Embodiment
Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Embodiment 1 Jiangxi Dexing Copper Mine Abandoned Place revegetation
This abandoned land landform is the hillside fields that refuse piles, and contains the heavy metals such as copper, arsenic in the surface soil, and soil is faintly acid.Treatment step is as follows:
(1) the nearly physical relief arrangement of abandoned land.Abandoned land is implemented nearly physical relief arrangement, and the domatic gradient according to natural repose angle of heap body is scabbled the top, slope, forms the domatic stockyard of step, and toe arranges the ecology bag barricade.Step slope length 6m, step berm width 1.5m, ecology bag wall height 0.6m.
(2) heavy metal is stable processes.Abandoned land top layer uniform fold heavy metal stabilizer adopts manually to turn over to harrow to make stabilizing agent and the interior discarded object of the shallow-layer 20-30cm degree of depth mix maintenance 7 days.Stabilizing agent dosage is 20% of processing layer volume.Heavy metal stabilizer is available from flourishing age Chung In.
(3) improvement of shallow-layer soda acid and flexible barrier isolation.The material that will have soda acid improvement and flexible barrier isolation is modulated into the pulpous state of solid content 65%, adopts wet-spraying machine to be ejected into the abandoned land top layer.Main material and mass ratio are as follows: 10% alkaline modifying agent, 15% float stone, 5% waterborne polyurethane resin, 15% are planted living matrix, 20% soil, 35% water.The alkalescence improved materials is lime.
(4) the abandoned land drain dyke arranges.Domatic outward flange arranges intercepting drain, platform arranges the drain ditch, intercepting drain furrow width 60cm, the arc ditch of ditch depth 40cm; The drain ditch is wide 50cm, the arc ditch of ditch depth 30cm.The drain ditch links to each other with intercepting drain.The level land arranges the drain ditch, is furrow width 100cm, the arc ditch of ditch depth 50cm.Behind the machinery trench digging, the fine sand of the soil of mass ratio 30%, 10% waterborne polyurethane resin and 40% is mixed, add again 20% water, be modulated into pulpous state, evenly be sprayed on the furrow bank coating thickness 8cm with wet-spraying machine.
(5) lay filled type vegetation pad.Domatic upper laying filled type vegetation pad, fill-type vegetation bedding and padding bag.
The vegetation pad is the left, center, right symmetrical structure, the fill-type vegetation pad that becomes a plurality of filler bags to form with the surface layer flush joint by bottom.Primer is the polypropylene filament geotextiles, and surface material is that high density polyethylene (HDPE) three pins are through netting.Vegetation pad fabric width 320cm is comprised of 8 filling bags, filling bag width 17cm, the stitching bandwidth 4cm between filling tape, the long 70cm of left and right sides filling bag, the long 140cm of middle filling bag, the wide 20cm of vertical feeding-passage between both sides filling bag and middle filling bag.The vegetation mat surface layer has 4 of charging apertures, charging aperture size 10*10cm.Every width of cloth vegetation is lined with 3 of safety ropes, and safety rope is fixed in the suture zone, is the glass fiber rope of direct 2cm, and per two groups of filling bags arrange one of safety rope.Every width of cloth vegetation pad arranges 15 of boltholes altogether, 9 of main boltholes, 6 of secondary boltholes, pore size 3cm.
Lay filled type vegetation pad on domatic from top to bottom, with anchor pole with the vegetation pad be anchored at domatic on.The Bower Anchor bar adopts direct 12mm screw-thread steel, length 60cm, and secondary anchor pole adopts 12mm screw-thread steel, length 40cm.Vegetation pad safety rope hanging/and is fixed with the band colligation on the Bower Anchor bar.Packing material preparation: plant for 1 cubic metre and plant living matrix 50%, float stone 5%, perlite 5% in the living base material, plant loam 40%, plant and add slow-release fertilizer 1000g, water-loss reducer 800g, adhesive 700g in the living base material for per 1 cubic metre.Add plant seed, comprise the seed of Festuca Arundinacea 20g, rye 20g, shrubby flase indigo 30g, twigs of the chaste tree 30g, shrub lespedeza 25g, tree-of-heaven 35g, locust tree 30g.With mix plant living base material and water is modulated into pulpous state, solid content 70%.Adopt grouting pump that the pulpous state for preparing is planted living base material, the charging aperture by the vegetation pad is injected in the filling bag, and it is full to plant living base material filled.After filling construction finishes, cuttage willow and the annual seedling of wet-land pine tree of planting in filling bag, average every vegetation pad cuttage or 8 of the nursery stocks planted.
(6) plant living spraying method.The composition of planting living base material is formulated by the composition of following weight ratio: soil 100kg, biological compost 15kg, peat 5kg, wood chip 5kg, vermiculite 3kg, water-loss reducer 30g, adhesive 35g.Stromal thickness is 8cm.Then spray seed layer 2cm.It is that master, herbaceous plant are auxiliary that plant seed adopts the suitable shrub of giving birth in native soil, such as shrub lespedeza, silk tree, tree-of-heaven, shrubby flase indigo, locust tree, Festuca Arundinacea, coreopsis seed.Can mix in any proportion.
After implementing half a year, administer district's vegetation cover degree and reach more than 60%, the plant survival rate of nursery stock of cuttage reaches 80%, and the herbaceous plant growth is vigorous, and woody plant is evenly distributed, and the nursery stock degree of lignification is higher, guarantees safe overwintering.Implement Second Year, herbaceous plant is weak gradually, and the woody plant growth is vigorous, and abandoned land ground vegetation coverage reaches more than 70%, and the Seedling survival rate of planting reaches more than 75%.It is vigorous to administer district's woody plant growth, and average growing height reaches 60-90cm, mutually merge with peripheral natural vegetation, and can oneself's procreation growth.
Through one-year age, the abandoned land earth's surface is entirely vegetation and covers, winter strong wind do not have airborne dust season yet.Stable treatment effect.
Embodiment 2 Shandong Zibo aluminium ore abandoned land revegetations are administered
The part abandoned land in this ore deposit is the hillside fields.The metals such as iron, titanium, scandium are contained on the earth's surface.Surface soil is alkalescence.Have the abandoned land governance process in hillside fields as follows:
(1) the nearly physical relief arrangement of abandoned land.Abandoned land is implemented the arrangement of nearly physical relief, and the domatic gradient arrangement according to being not more than natural repose angle of heap body forms the stockyard with trapezoidal domatic and platform, and toe arranges the ecology bag barricade.Trapezoidal domatic long 8m, berm width 3m, ecology bag wall height 1.2m.
(2) heavy metal is stable processes.Abandoned land top layer uniform fold heavy metal stabilizer adopts to turn over to harrow stabilizing agent and shallow-layer discarded object are mixed, and the rake mode is manually turned in domatic upper employing, and the long machinery that adopts in level land turns over the rake mode, maintenance 5 days.Stabilizing agent dosage is 15% of processing layer volume.Employing slaked lime is heavy metal stabilizer.
(3) improvement of shallow-layer soda acid and flexible barrier isolation.The material that will have soda acid improvement and flexible barrier isolation is modulated into pulpous state, adopts wet-spraying machine to be ejected into the abandoned land top layer.Main material and mass ratio are as follows: 5% alkaline modifying agent, 10% float stone, 10% waterborne polyurethane resin, 25% are planted living matrix, 30% soil, 20% water.Select the soda acid improved materials according to abandoned land percolate acid-base value, alkaline modifying agent is for having biological organic fertilizer and superphosphate, and its ratio is 1:1.
(4) the abandoned land drain dyke arranges.Domatic outward flange arranges intercepting drain, platform arranges the drain ditch, intercepting drain furrow width 40-100cm, the arc ditch of ditch depth 20-50cm; Draining furrow width 30-80cm, the arc ditch of ditch depth 20-40cm.The drain ditch links to each other with intercepting drain.The level land arranges the drain ditch, furrow width 80-120cm, the arc ditch of ditch depth 40-60cm.Behind the artificial trench digging, with soil, 10% waterborne polyurethane resin and 30% the fine sand of mass ratio 20%, 40% water composite material, be modulated into the pulpous state of solid content 70%, adopt for wet-spraying machine and evenly be sprayed on the furrow bank coating thickness 5cm.
(5) lay filled type vegetation pad.Domatic upper laying filled type vegetation pad, fill-type vegetation bedding and padding bag.
The vegetation pad is the left, center, right symmetrical structure, the fill-type vegetation pad that becomes a plurality of filler bags to form with the surface layer flush joint by bottom.Primer is the polypropylene filament geotextiles, and surface material is that high density polyethylene (HDPE) three pins are through netting.Vegetation pad fabric width 320cm is comprised of 8 filling bags, filling bag width 24cm, the stitching bandwidth 5cm between filling tape, the long 70cm of left and right sides filling bag, the long 140cm of middle filling bag, the wide 20cm of vertical feeding-passage between both sides filling bag and middle filling bag.The vegetation mat surface layer has 4 of charging apertures, charging aperture size 10*10cm.Every width of cloth vegetation is lined with 3 of safety ropes, and safety rope is fixed in the suture zone, is the glass fiber rope of direct 2cm, and per two groups of filling bags arrange one of safety rope.Every width of cloth vegetation pad arranges 15 of boltholes altogether, 9 of main boltholes, 6 of secondary boltholes, pore size 3cm.
Lay filled type vegetation pad on domatic from top to bottom, with anchor pole with the vegetation pad be anchored at domatic on.The Bower Anchor bar adopts direct 12mm screw-thread steel, length 60cm, and secondary anchor pole adopts 12mm screw-thread steel, length 40cm.Vegetation pad safety rope hanging/and is fixed with the band colligation on the Bower Anchor bar.The packing material preparation.Plant for 1 cubic metre and plant living matrix 50%, float stone 5%, perlite 5% in the living base material, plant loam 40%, plant and add slow-release fertilizer 1000g, water-loss reducer 800g, adhesive 700g in the living base material for per 1 cubic metre.Plant seed is mainly selected Festuca Arundinacea 20g, rye 20g, shrubby flase indigo 30g, twigs of the chaste tree 30g, shrub lespedeza 35g, locust tree 30g.The living base material of planting that mixes is modulated into pulpous state, solid content 70%.Adopt grouting pump that the pulpous state for preparing is planted living base material, the charging aperture by the vegetation pad is injected in the filling bag, and it is full to plant living base material filled.After filling construction finishes, the paper mulberry of in filling bag, planting, tree-of-heaven, the annual seedling of Chinese pine, average every vegetation pad cuttage or 8 of the nursery stocks planted.
It is high more than to administer operating efficiency, and according to the construction teams and groups of identical 5 people establishment, about 500-700m can construct average every day
2, with respect to traditional alien earth sparging processing mode (about 200-240m of construction every day
2), efficient has improved more than 2 times.
Implement after 3 months, the comprehensive emergence rate of plant seed reaches more than 80%, and the survival rate of the nursery stock of planting reaches 85%, and the herbaceous plant growth is vigorous, effectively covers the earth's surface, and woody plant is evenly distributed, more than average every square meter woody plant 6 strains.Recovered to grow through 1 year, abandoned land ground vegetation coverage reaches more than 75%, the Seedling survival rate of planting reaches more than 80%, the herbaceous plant growth is weak gradually, the woody plant growth is vigorous, and average growing height reaches 55cm, and floristics, structure and peripheral natural vegetation are merged mutually, the revegetation effect is remarkable, and can oneself's procreation growth.
Embodiment 3 Shandong aluminium ore abandoned land revegetations are administered
The abandoned land in this ore deposit is the level land that hollow is arranged.The process of recovering improvement is identical with embodiment 2, and different steps is:
(1) to the level land carry out height dig low fill and lead up whole;
(4) the abandoned land drain dyke arranges.The level land arranges the drain ditch, furrow width 80-120cm, the arc ditch of ditch depth 40-60cm.Spacing of drainage ditches 25m.
The recovery regulation effect that reaches is identical with embodiment 2.
Claims (10)
1. the method for nonferrous metal mine abandoned land revegetation comprises step:
1) landform arrangement: the nonferrous metal mine abandoned land is carried out the landform arrangement, the level land carry out height dig low fill and lead up whole; Domatic according to the shaping of natural repose angle descending grade, it is domatic to form step;
2) heavy metal is stable processes: evenly use heavy metal stabilizer in the 20-30cm degree of depth of abandoned land surface;
3) shallow-layer soda acid improvement and flexible barrier isolation: spray in abandoned land soda acid modifying agent, the mixture of planting living matrix and polyurethane resin surperficial;
4) drain dyke is set: dig intercepting drain in the domatic outer rim of step, excavate the drain ditch on the domatic platform and the level land under domatic, or dig the drain ditch of spacing 25-30m on the level land; At intercepting drain and drain ditch surface spraying polyurethane resin slurry;
5) lay the vegetation pad: lay filled type vegetation pad and fix with anchor pole.
2. the method for claim 1 is characterized in that, the 5-8m of step slope length described in the described step 1), the wide 1-3m of step platform; Carry out height for smooth abandoned land and dig the low whole processing of filling and leading up.
3. the method for claim 1 is characterized in that, also is included in domatic toe in the described step 1) ecology bag barricade is set, the high 0.6-1.2m of ecology bag barricade.
4. the method for claim 1 is characterized in that, described step 2) in heavy metal stabilizer be in iron, molysite, ferrous salt, carbonate, phosphate, clay, hydroxide, sulphide, the molybdate one or more.
5. such as claim 1 or 4 described methods, it is characterized in that described step 2) in the heavy metal stabilizer consumption be the 15-20% of abandoned land processing layer volume.
6. the method for claim 1, it is characterized in that, soda acid modifying agent in the described step 3), plant living matrix and the resin blend thing comprises: 5-10% soda acid modifying agent, the float stone of 10-15%, 5-10% waterborne polyurethane resin, 15-30% plant the soil of living matrix, 5-40%, the water of 20-35%; Described soda acid modifying agent is alkaline modifying agent or acid modifying agent, and described acid modifying agent is one or more in biological organic fertilizer, superphosphate, the acid-sludge, and described alkaline modifying agent is lime and/or caustic soda.
7. the method for claim 1, it is characterized in that the polyurethane resin slurry in the described step 4) is for being hybridly prepared into the polyurethane resin slurry according to mass ratio with the fine sand of soil, 10-15% waterborne polyurethane resin and the 30-40% of 20-30%, the water of 15-40%.
8. the method for claim 1, it is characterized in that, described step 5) after laying filled type vegetation pad in, also be included in and plant the step that is covered with the nursery stock of planting, described nursery stock is one or more the annual nursery stocks in rose, tatarian dogwood, periploca spium, shrubby flase indigo, meadow sweet, caragana microphylla, Chinese photinia, cloves, Ligustrum quihoui, locust tree, elm, Elaeocarpus decipiens, Luan Shu, willow, leaflet Chinese wax, wintercreeper euonymus, Boston ivy, humid euphorbia, Chinese pine, paper mulberry, the little seeds of a tung oil tree, silk tree, shrub lespedeza, tree-of-heaven, the wet-land pine tree.
9. method as claimed in claim 8 is characterized in that, the described nursery stock of planting is covered with the 3-8 strain of planting for planting at each filled type.
10. such as the arbitrary described method of claim 1-9, it is characterized in that, also comprise after the described step 5) and spray the step of planting living base material.
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