CN108901659A - The structure and its implementation method for preventing contaminated site engineering earthing from cracking using vegetation - Google Patents

The structure and its implementation method for preventing contaminated site engineering earthing from cracking using vegetation Download PDF

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Publication number
CN108901659A
CN108901659A CN201810721683.8A CN201810721683A CN108901659A CN 108901659 A CN108901659 A CN 108901659A CN 201810721683 A CN201810721683 A CN 201810721683A CN 108901659 A CN108901659 A CN 108901659A
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CN
China
Prior art keywords
cracking
earthing
engineering
vegetation
contaminated site
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810721683.8A
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Chinese (zh)
Inventor
杜延军
刘睿
毕钰璋
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Southeast University
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Southeast University
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Publication date
Application filed by Southeast University filed Critical Southeast University
Priority to CN201810721683.8A priority Critical patent/CN108901659A/en
Publication of CN108901659A publication Critical patent/CN108901659A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/10Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B09C1/105Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants

Abstract

The invention discloses a kind of structures and its implementation method for preventing contaminated site engineering earthing from cracking using vegetation, structure includes the engineering earthing being covered on contaminated site, kind is implanted with water retention property vegetation on the engineering earthing, and the water retention property vegetation includes one or both of clover and Bermuda grass.Method includes step:(1) thickness of engineering earthing is selected according to the severity of contaminated site;(2) according to the thickness of engineering earthing, selection plantation clover and Bermuda grass plant;(3) weeds are gone in plant strain growth early stage, guarantees the unicity of plant, and pour water in due course, applies fertilizer after neat seedling;(4) in the situation of the region arrangement soil moisture content sensor and soil matrix gesture sensor monitoring works earthing cracking that prevent cracking.The configuration of the present invention is simple, crack resistence significant effect;Enforcement difficulty is small, and the implementation cost is low, easy to operate;Secondary pollution will not be caused to place.

Description

The structure and its implementation method for preventing contaminated site engineering earthing from cracking using vegetation
Technical field
The invention belongs to the technical field of building and environmental project, it is related to a kind of preventing contaminated site engineering earthing from cracking Technology.
Background technique
With the aggravation of municipal pollution, burying method has been widely used in the processing of various pollutants.In engineering Engineering earthing is generally covered above landfill yard, for preventing the polluted gas of bottom to be diffused into the environment on periphery, is avoided pair The environment on periphery is polluted and is damaged.However, the phenomenon that engineering earthing can generate cracking during military service, and being cracked can lead Engineering earthing barrier property is caused to reduce, polluted gas can be arrived in air by " privileged way ", so that the environment to periphery is made At harm.There are no the generations that effective method can control engineering earthing crack in existing document record.Therefore, it is necessary to A kind of method for proposing effective control engineering earthing crack.
Influence place cracking mainly due in the soil body porous media it is uneven, and then influence the soil body in suction point Cloth finally makes engineering earthing generate cracking, as shown in Figure 1.
Summary of the invention
Goal of the invention:The present invention provides a kind of structure for preventing contaminated site engineering earthing from cracking using vegetation and in fact Applying method, the structure are simple, practical;This method does not use any chemical agent, does not consume any earth working material, safety and environmental protection, Ensure place under the high temperature conditions almost without cracking, to improve the long service performance of engineering earthing simultaneously.
Technical solution:The structure for preventing contaminated site engineering earthing from cracking using vegetation of the invention, including it is covered in dirt The engineering earthing on place is contaminated, kind is implanted with water retention property vegetation on the engineering earthing, and the water retention property vegetation includes One or both of clover and Bermuda grass.
Bermuda grass (Cynodon spp.) is a kind of extensive growing plants in subtropical zone, has stronger drought-resistant energy Power, suitable for as lawn plant.Clover (Trifolium spp.) is common in temperate zone and subtropical zone, because of its plant Grow it is vigorous, it is densely distributed, be usually used in feed and compost.The present invention will select both plants as regulation engineering earthing cracking Plant, Bermuda grass and clover can effectively cover entire place, it is exposed not will lead to a large amount of soils, so that high temperature is exposed to the sun Under, the moisture content level of engineering earthing maintains unanimously substantially, and the difference of soil suction is not in obvious expansion.
According to the severity of contaminated site, the engineering thickness of earth covering is 10-30cm, and engineering thickness of earth covering is 10cm When plantation Bermuda grass, engineering thickness of earth covering be 30cm when plant clover.Since Bermuda grass is different with the water retention property of clover, The soil of plantation Bermuda grass moisture content highest, the soil for planting clover in depth 10cm or so contain in depth 30cm or so Water rate highest needs to determine the plant of its surface plantation according to different place thickness of earth covering.
It is described prevent cracking region be equipped with can monitoring works cover soil's water content and matric potential variation soil water-containing Rate sensor and Matric potential sensor, combined data collector obtain engineering and cover soil's water content and matric potential change information, institute The data of acquisition can be used as the quantitative target of evaluation plant control engineering earthing cracking effect, so that monitoring works earthing cracks Situation.
The water retention property vegetation has principle of unity, needs periodically to go to cut weeds, prevents the presence of various plants from leading Interspecies competition is caused, functional plants growth is avoided and is suppressed.
The implementation method of the above-mentioned structure for preventing contaminated site engineering earthing from cracking using vegetation, includes the following steps:
(1) thickness of engineering earthing is selected according to the severity of contaminated site.
(2) according to the thickness of engineering earthing, selection plantation clover and Bermuda grass plant.
(3) weeds are gone in plant strain growth early stage, guarantees the unicity of plant, and pour water in due course, applies fertilizer after neat seedling;Plant kind It plants and needs to pass through trench digging, sowing, watering, fertilising, weeding step, to ensure the stable growth of functional plant.
(4) it is adopted in the region arrangement soil moisture content sensor and soil matrix gesture sensor, combined data for preventing cracking Storage obtains engineering and covers soil's water content and matric potential change information, and data collected can be used as evaluation plant control engineering The quantitative target of earthing cracking effect, thus the situation of monitoring works earthing cracking.
Wherein, in step (2), the method for plantation is the ciphering type plantation so that in coverage area without exposed soil.
Beneficial effect:1, the configuration of the present invention is simple, crack resistence significant effect;2, a large amount of plantations of clover and Bermuda grass are difficult Spend small, the implementation cost is low, easy to operate;3, secondary pollution will not be caused to place.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that engineering earthing generates cracking;
Fig. 2 is structural schematic diagram of the invention.
Specific embodiment
Referring to fig. 2, the structure for preventing contaminated site engineering earthing from cracking using vegetation described in one embodiment of the invention, packet The engineering earthing 1 being covered on contaminated site is included, plants and is implanted with water retention property vegetation, the water retention property on engineering earthing 1 Vegetation includes one or both of clover 2 and Bermuda grass 3, can prevent the appearance of interstices of soil 4.
Engineering earthing 1 is with a thickness of 10-30cm, and engineering earthing 1 is thick with a thickness of Bermuda grass 3, engineering earthing is planted when 10cm Clover 2 is planted when degree is 30cm.
Prevent cracking region be equipped with can monitoring works cover soil's water content and matric potential variation soil moisture content pass Sensor 5 and Matric potential sensor 6, combined data collector 7 obtain engineering and cover soil's water content and matric potential change information, adopted The data of collection can be used as the quantitative target of the evaluation cracking effect of plant control engineering earthing 1, so that monitoring works earthing 1 cracks Situation.
The implementation method of the above-mentioned structure for preventing contaminated site engineering earthing from cracking using vegetation, including:
(1) thickness of engineering earthing 1 is selected according to the severity of contaminated site, for example is selected in native 8 regions of serious pollution The engineering earthing 1 for selecting 30cm thickness, in the engineering earthing 1 of the native 9 regional choice 10cm thickness of slight pollution.
(2) since moisture content of the clover 2 at 30cm thickness earthing is higher, Bermuda grass 3 at 10cm thick earthing it is aqueous Rate is higher, and moisture content increase can promote the barrier properties for gases of engineering earthing 1, therefore selects at the engineering earthing 1 of 30cm thickness Plantation 3 plant of clover is selected, selection plantation 2 plant of Bermuda grass at the engineering earthing 1 of 10cm thickness.
In order to avoid the engineering earthing 1 in plant gap cracks because moisture distribution is uneven, the method for plantation is ciphering type Plantation, so that without exposed soil in coverage area.In the section of plantation, by interval about 10cm trench digging, the depth of ditch is about 2.5cm suitably pours water according to soil moisture, is later uniformly sprinkled into plant seed in ditch, and earthing is simultaneously compacted.Seed average dose For 2.4g/m2
(3) weeds are manually removed in time in plant strain growth early stage, it is during which suitable according to soil moisture content to promote the growth of seedling When pour water, it is generally primary in the watering of the fine day morning, after the neat seedling of plant, pour and apply 0.2% aqueous solution of urea as fertilizer, with It imposes within every 10 days afterwards primary.
The invasion of the weeds such as Conyza canadensis can reduce the efficiency in selected plant control place crack, thus needed in place and Shi Rengong removes weeds, guarantees the unicity of place plant in region.
(4) determining instrument is arranged in plant control region, specifically include soil moisture content sensor (ECH2O) 5 and soil Matric potential sensor (TensioMark) 6, sensor connect with real-time data acquisition device (EM50) 7, walk according to preset time Length automatically determines soil moisture content and matric potential.Time step is set as 10min in the present invention, and soil matrix gesture sensor can be used B/P EGR Back Pressure Transducer EGR replacement.

Claims (6)

1. a kind of structure for preventing contaminated site engineering earthing from cracking using vegetation, it is characterised in that:Including being covered in Pollution Field The engineering earthing of ground is planted on the engineering earthing and is implanted with water retention property vegetation, and the water retention property vegetation includes axle One or both of grass and Bermuda grass.
2. the structure according to claim 1 for preventing contaminated site engineering earthing from cracking using vegetation, it is characterised in that:Institute Stating engineering thickness of earth covering is 10-30cm, and when plantation Bermuda grass, engineering thickness of earth covering are 30cm when engineering thickness of earth covering is 10cm Plant clover.
3. the structure according to claim 1 for preventing contaminated site engineering earthing from cracking using vegetation, it is characterised in that:Institute State prevent cracking region be equipped with can monitoring works cover soil's water content and matric potential variation soil moisture content sensor and Matric potential sensor.
4. the structure according to claim 1 for preventing contaminated site engineering earthing from cracking using vegetation, it is characterised in that:Institute Water retention property vegetation is stated with principle of unity.
5. the embodiment party of the structure for preventing contaminated site engineering earthing from cracking using vegetation as described in claim 1-4 is any Method, which is characterized in that include the following steps:
(1) thickness of engineering earthing is selected according to the severity of contaminated site;
(2) according to the thickness of engineering earthing, selection plantation clover and Bermuda grass plant;
(3) weeds are gone in plant strain growth early stage, guarantees the unicity of plant, and pour water in due course, applies fertilizer after neat seedling;
(4) in the region arrangement soil moisture content sensor and soil matrix gesture sensor for preventing cracking, so that monitoring works cover The situation of soil cracking.
6. implementation method according to claim 5, it is characterised in that:In step (2), the method for plantation is so that covering model Enclose the interior ciphering type plantation without exposed soil.
CN201810721683.8A 2018-07-04 2018-07-04 The structure and its implementation method for preventing contaminated site engineering earthing from cracking using vegetation Pending CN108901659A (en)

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CN107091916A (en) * 2017-04-17 2017-08-25 武汉大学 Dissipated by plant and adjust the tectum structure optimization method that drip is oozed in refuse landfill
CN207042997U (en) * 2017-05-31 2018-02-27 北京高能时代环境技术股份有限公司 Household refuse landfill sites capillary water absorption transpiration type covered structure
CN107179563A (en) * 2017-06-21 2017-09-19 西安理工大学 Brick clay ancient building pedestal disease monitoring system and implementation
CN107347402A (en) * 2017-07-11 2017-11-17 厦门紫金矿冶技术有限公司 A kind of ecological restoring method of highly acid Disused tailing land
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