CN107288099A - A kind of geotechnical grid shore protection suitable for plateau salinized soil - Google Patents

A kind of geotechnical grid shore protection suitable for plateau salinized soil Download PDF

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Publication number
CN107288099A
CN107288099A CN201710573256.5A CN201710573256A CN107288099A CN 107288099 A CN107288099 A CN 107288099A CN 201710573256 A CN201710573256 A CN 201710573256A CN 107288099 A CN107288099 A CN 107288099A
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CN
China
Prior art keywords
geotechnical grid
plateau
shore protection
salinized soil
soil
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Pending
Application number
CN201710573256.5A
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Chinese (zh)
Inventor
张文龙
杨楠
李轶
吴文祥
张培胜
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Hohai University HHU
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Hohai University HHU
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Priority to CN201710573256.5A priority Critical patent/CN107288099A/en
Publication of CN107288099A publication Critical patent/CN107288099A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B30/00Compositions for artificial stone, not containing binders
    • C04B30/02Compositions for artificial stone, not containing binders containing fibrous materials
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/122Flexible prefabricated covering elements, e.g. mats, strips
    • E02B3/126Flexible prefabricated covering elements, e.g. mats, strips mainly consisting of bituminous material or synthetic resins

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Revetment (AREA)

Abstract

The present invention relates to a kind of geotechnical grid shore protection suitable for plateau salinized soil, including geotechnical grid, ecological revetment base material and shore protection plant.Geotechnical grid is honeycomb geotechnical grid, capable of expansion and contraction, with excellent durability space structure;Geotechnical grid is uniformly distributed hole, using high-density polyethylene material, and adds salt resistance stain compound additive to be modified it, with good salt tolerant, cold-resistant and chemical stability;Ecological revetment base material is mixed according to a certain percentage by salinized soil, inorganic solidification agent and organic fiber, it is possible to increase the durability in salinized soil environment, antiscour and unfreezing;Instant invention overcomes the shortcoming of plains region ecological revetment, the mal-condition in high altitudes and cold area can be resisted, anti-saline alkali corrosion, anti-intensive ultraviolet, anti-sluicing, cost is low and non-secondary pollution, is conducive to keeping the ecological environment of sources of three rivers water head site as the ecological revetment of plateau salinized soil.

Description

A kind of geotechnical grid shore protection suitable for plateau salinized soil
Technical field
The present invention relates to a kind of geotechnical grid shore protection suitable for plateau salinized soil, belong to restoration of the ecosystem field.
Background technology
Salinized soil is solonchak and alkaline earth and various salinization, the general name of alkali soil, the salt of China widely distributed all over the world Stain soil integrated distribution in northwest, North China and the coastal region in east China, wherein, west area has salinized soil 2 506.33 × 104hm2, Account for the 69.03% of the national salinized soil gross area.NORTHWEST CHINA portion area landform be generally plateau, wherein Qinghai-Tibet Platean be China most Greatly, world's height above sea level highest plateau, is referred to as " roof of the world ".Qinghai-Tibet height above sea level, the temperature difference are big, radiation is strong, drought, Windy, wind speed is big, oxygen content is low, Frozen-thawed cycled is violent.Salt lake and saline soil area area are big, and salinized soil salinity is high, can send out The phenomenons such as raw salt is swollen, frost heave, so as to cause soil body stability to reduce.
Three River Sources areas is located at Southern Qinghai Province, is the innerland of Qinghai-Tibet Platean, long to breed the Chinese nation, South East Asia Mainland The world-renowned rivers of civilization:The source water catchment area in the Changjiang river, the Yellow River and Lancang Mekong River.Three River Sources areas is China One of glacier integrated distribution, river gathers, and lake, marsh are numerous.Highlands river course serves not only as the carrier of national culture With maintain the valuable source of the ecological balance, and be for when geobiocenosis provides life and the required approach of energy exchange.And Due to many factors, the fwaater resources protection of Three River Sources areas is faced with acid test.Serious soil erosion causes soil Earth nutrient is reduced, and the ability of retaining and conserveing soil moisture dies down, and desertification of land is serious, and vegetation life condition deteriorates, and substantial amounts of silt enter river, Lake, causes silt content of river to rise, pollutant load increase, and prestige is all caused to ecological environment and the water safety in downstream etc. The side of body, therefore near-nature forest river course progress ecological management in highlands is particularly important.
Also need to lift river course two sides landscape while administering river course, at present the multiple green main use linked network of country's rigidity revetment Sow grass seeds by duster the technique such as soil moved in improve the original and greening grass bag, technique is relative complex, and labour demand is big, and shore protection stability is relatively weak.And Existing ecological revetment technology is only applicable to plains region, it is impossible to adapt to the high and cold of plateau high altitude localities, high salt and strong purple The features such as outside line, it is impossible to played a protective role to the river channel ecology of highlands, it is, therefore, desirable to provide a kind of be applied to high crude salt The ecological revetment of stain soil.
The content of the invention
The technical problems to be solved by the invention are that the defect for overcoming prior art is applied to plateau salinized soil there is provided one kind Area, with characteristics such as saline-alkaline corrosion-resistant, anti-intensive ultraviolet, anti-sluicings and is conducive to the ecological revetment of water and soil conservation, causes Power is in the restoration of the ecosystem in sources of three rivers watershed river.
To reach above-mentioned purpose, the present invention provides a kind of geotechnical grid shore protection suitable for plateau salinized soil, and its feature exists In, including geotechnical grid, ecological revetment base material and shore protection plant.
As a further improvement on the present invention, the geotechnical grid uses honeycomb geotechnical grid, the honeycomb geotechnical grid Capable of expansion and contraction, with larger laterally limiting and rigidity, excellent durability space structure enables the geotechnical grid shore protection It is reasonably resistant to current scour effect.
As a further improvement on the present invention, the geotechnical grid material uses high density polyethylene (HDPE) (HDPE) material, and Salt resistance stain compound additive is added to be modified it.The HDPE material is nontoxic, tasteless, odorless, acid and alkali resistance and various salt The corrosion of class, with good cold resistance and chemical stability, and case hardness, tensile strength and rigidity are all stronger.
As a further improvement on the present invention, hole is uniformly distributed on the honeycomb geotechnical grid, ensure that cell compartment Interior unnecessary water is discharged in time, is that plant and microorganism provide abundance while helping to ensure that the real-time exchange of nature water and soil Moisture and nutrient.
As a further improvement on the present invention, the ecological revetment base material is by salinized soil, inorganic solidification agent and organic fiber Mix according to a certain percentage.The inorganic solidification agent is formulated according to a certain percentage by cement and lime, can improve institute State durability of the ecological revetment base material in salinized soil environment;The organic fiber selects palm fibre, can improve the ecological shield The freezing-thawing resistance of bank base material;Plant antifreezer and microbial growth regulator can be added in the ecological revetment base material, can be The growth of the shore protection plant and the microbial mixture provides good environment.The ecological revetment base material is carried out to salinized soil Solidification, its physics, mechanical property have a different degrees of lifting, the increase of salinized soil dry density, anti-permeability performance, water stability and Anti-freezing type strengthens, and the compression strength and shearing strength of salinized soil, which have, to be significantly improved, and more loose structure is conducive to side The discharge of soil body inner pore water behind slope.
As a further improvement on the present invention, microorganism is mixed into the ecological revetment base material, from high and cold high salt area It is distributed more widely, it is metabolized more active strain.The microorganism is mixed by bacterium and actinomyces, and the bacterium selects plateau Several combinations, described to put between salt tolerant strain Rhod, Cook Pseudomonas, Arthrobacter, pseudomonas and Microbacterium Line bacterium selects streptomyces and Nocardia.Flexibility of the actinomyces added to nutritional need is bigger, in nature Material is circulated and played the role of in terms of increasing soil fertility important.The microbial mixture, can pass through microorganism Metabolism improves the cementing power between soil particle, improves resistance of soil, so that reinforcing side slope, while microorganism is degradable Organic matter in river, is conducive to Water Ecological Recovery.
As a further improvement on the present invention, the shore protection Plants selection plateau halophytes, and with cold-resistant, anti-poor The grass seeds of lean, suitable low level management, and using the planting pattern of " grass-grass knot close ", from Chinese small iris, alfalfa, prairie milk vetch and Several combination between prostrata summercypress.The shore protection plant can change soil texture by the extension of root system, improve the water holding of soil Power and aeration, while evaporation from topsoil can be reduced, prevent salinity from, in the accumulation of soil surface, ecological shield can also be met in addition The landscape requirement of bank.
As a further improvement on the present invention, the geotechnical grid shore protection laying when plane is tensed, cell compartment structure it Between the flexible structure of an entirety is closely connected to become by connector, can by itself regulation adaptive deformation, structure be difficult by Destruction, and thickening can be increased on the basis of existing, adapt to the shore protection demand of varying environment.
Compared with prior art, the beneficial effect that reaches of the present invention is:
(1) flexible structure that the present invention is fixed using honeycomb geotechnical grid, the ecology of geotechnical grid loosening Shore protection base material, can play cushioning effect to sluicing, with excellent durability, can effectively prevent erosion, Reinforcing side slope.
(2) geotechnical grid uses high density polyethylene (HDPE) (HDPE) material in the present invention, and the addition of ecological revetment base material is inorganic solid The materials such as agent, organic fiber, the features such as being respectively provided with freeze proof cold-resistant, Salt And Alkali Tolerance, resistance to intensive ultraviolet, and low in raw material price, system Make simple and convenient, ecological environment will not be had a negative impact, while disclosure satisfy that stability requirement.
(3) present invention is carried out biology to salinized soil and repaiied using suitable growing plants and microorganism in the salinized soil of plateau It is multiple, while the solid soil of water conservation, meets the requirement of side slope top layer stability, while organic dirt in plant and the degradable river of microorganism Thing is contaminated, the effect of purifying water body is reached, is conducive to recovering water ecological environment.
(4) instant invention overcomes the shortcoming of plains region ecological revetment, the spies such as the high and cold, High aititude in highlands can be resisted Levy, be adapted to apply in salinized soil, and anti-intensive ultraviolet, resistance to compression shock resistance, plateau saline soil area can be work perfectly well as Ecological revetment, is conducive to keeping the ecological environment of sources of three rivers water source area.
Brief description of the drawings
Fig. 1 geotechnical grid structural representations;
Geotechnical grid lays top view in Fig. 2 Fig. 1;
The single geotechnical grid structural representations of Fig. 3;
Fig. 4 geotechnical grid top views;
In figure:1st, geotechnical grid;2nd, hole;3rd, geotechnological lattice cavity;4th, connector, 5, first end, 6, the second end.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As Figure 1-4, a kind of ecological revetment suitable for plateau salinized soil, including geotechnical grid, ecological revetment base material With shore protection plant.
Geotechnical grid 1 is honeycomb geotechnical grid, with larger laterally limiting and rigidity;Some geotechnical grid sides wall is connected And extend at grade, geotechnological cell is only formed by side wall, and single geotechnical grid is bonded by two arc-like sheet body end portions and surrounded, It is first end 5 to bond end, and what it is in the centre of two first end 5 is between the second end 6, two first ends 5 of increase or diminution Distance, can reduce accordingly or increase the distance between two the second ends 6;On A-A directions, two adjacent geotechnical grids are public One the second end 6, on B-B directions, the two adjacent public first ends 5 of geotechnical grid.The honeybee is pulled up in A-A side Nest geotechnical grid can change width of the honeycomb geotechnical grid on B-B directions, that is, reach the purpose of free shrink.
The geotechnical grid 1 is in the case of non-telescope, distance between two first ends 5 and between two the second ends 6 It is 300mm, geotechnical grid side wall, is evenly distributed with some holes 2, a diameter of 20mm of described hole 2.
The material of geotechnical grid 1 uses high density polyethylene (HDPE) (HDPE) material, and adds salt resistance stain compound additive It is modified.
Addition ecological revetment base material in the geotechnological lattice cavity 3, the ecological revetment base material can be mixed according to following ratio Form, salinized soil 90%, inorganic solidification agent 5.5%, organic fiber 1.0%, Plant antifreezer and microbial growth regulator 3.5%.
The inorganic solidification agent of the ecological revetment base material is formulated according to a certain percentage by cement and lime, described Cement and lime are purchased from market, and its percentage composition is without particular/special requirement;The organic fiber uses palm fibre, the palm fibre purchase From market, length about 2.5-3.5cm, the wall scroll shape that diameter is about 2.0mm are divided into;Above-mentioned material is fully mixed, And be added in the geotechnical grid cavity 3, base material can be inserted using method manually or mechanically.
Microorganism is mixed with the ecological revetment base material, the microorganism is mixed by bacterium and actinomyces, it is described thin Bacterium selects group several between plateau salt tolerant strain Rhod, Cook Pseudomonas, Arthrobacter, pseudomonas and Microbacterium Close, the actinomyces select streptomyces and Nocardia.The microbial mixture is after domestication culture, by microorganism Mixture is inserted in the geotechnical grid cavity 3, and sprays microbial nutrient solution.
Shore protection plant is planted in the ecological revetment base material, using the planting pattern of " grass-grass knot close ", from Chinese small iris, Several combination between alfalfa, prairie milk vetch and prostrata summercypress.Following collocation mode can be used:1. Chinese small iris 40%+ prostrata summercypresses 60%;2. alfalfa 20%+ prairie milk vetches 80%;3. alfalfa 20%+ prairie milk vetches 40%+ prostrata summercypresses 40%.
The geotechnical grid ecological revetment tenses plane in laying, between side slope surface tiling, cell compartment structure Closely connected by connector, the geotechnical grid shore protection laying top view when laying as shown in Fig. 2 avoid damaging geotechnological lattice Room, in order to avoid influence its performance.
Presently preferred embodiments of the present invention is the foregoing is only, it should be understood by those skilled in the art that:To specific reality of the invention The mode of applying still fallen within without substantial modification or equivalent substitution to protection scope of the present invention.

Claims (10)

1. a kind of geotechnical grid shore protection suitable for plateau salinized soil, it is characterised in that:Including some geotechnical grids, it is filled in soil Ecological revetment base material in work cell compartment and plant in the shore protection plant in shore protection base material, some geotechnical grid sides wall be connected and Extend at grade, the ecological revetment base material includes salinized soil, inorganic solidification agent and organic fiber.
2. the geotechnical grid shore protection according to claim 1 suitable for plateau salinized soil, it is characterised in that:It is described inorganic solid Agent is formulated by cement and lime;The organic fiber selects palm fibre;Plant can be added in the ecological revetment base material Antifreezing agent and microbial growth regulator.
3. the geotechnical grid shore protection according to claim 2 suitable for plateau salinized soil, it is characterised in that:The ecological shield Microorganism is mixed into bank base material, the microorganism is that high and cold high salt Area distribution is wide, is metabolized active strain.
4. the geotechnical grid shore protection according to claim 3 suitable for plateau salinized soil, it is characterised in that:The microorganism Mixed by bacterium and actinomyces, the bacterium selects plateau salt tolerant strain Rhod, Cook Pseudomonas, Arthrobacter, vacation Several combination between zygosaccharomyces and Microbacterium, the actinomyces select streptomyces and Nocardia.
5. the geotechnical grid shore protection according to claim 1 suitable for plateau salinized soil, it is characterised in that:The shore protection is planted Thing selects the plateau halophytes with cold-resistant, anti-barren, suitable low level management, using the planting pattern of " grass-grass knot is closed ".
6. the geotechnical grid shore protection according to claim 5 suitable for plateau salinized soil, it is characterised in that:The shore protection is planted Thing is combination several between Chinese small iris, alfalfa, prairie milk vetch and prostrata summercypress.
7. the geotechnical grid shore protection according to claim 1 suitable for plateau salinized soil, it is characterised in that:The geotechnological lattice Room side wall is distributed the hole that excessive moisture is discharged in time in guaranteed cell compartment.
8. the geotechnical grid shore protection according to claim 1 suitable for plateau salinized soil, it is characterised in that:Described geotechnique Cell compartment is the honeycomb geotechnical grid of freely adjustable size.
9. the geotechnical grid shore protection according to claim 1 suitable for plateau salinized soil, it is characterised in that:The geotechnological lattice The material of room 1 uses high-density polyethylene material, and adds salt resistance stain compound additive to be modified it.
10. the geotechnical grid shore protection according to claim 1 suitable for plateau salinized soil, it is characterised in that:Single geotechnique Cell compartment is bonded by two arc-like sheet body end portions and surrounded, and it is first end to bond end, in the middle of two first ends for the second end, The distance between two first ends are reduced in increase, can reduce accordingly or increase the distance between two the second ends;In A-A side Upwards, the two adjacent public the second end of geotechnical grid, on B-B directions, the two adjacent public first ends of geotechnical grid Portion.
CN201710573256.5A 2017-07-14 2017-07-14 A kind of geotechnical grid shore protection suitable for plateau salinized soil Pending CN107288099A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108842750A (en) * 2018-07-05 2018-11-20 安徽合创新型合成材料有限公司 A kind of height-adjustable geotechnical grid and application method
CN110521323A (en) * 2019-09-29 2019-12-03 南京林业大学 A method of locust tree of sowing grass seeds by duster on the exposed palisades of shale is efficiently replied immediately green fastly and improves soil pH value

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CN108842750A (en) * 2018-07-05 2018-11-20 安徽合创新型合成材料有限公司 A kind of height-adjustable geotechnical grid and application method
CN110521323A (en) * 2019-09-29 2019-12-03 南京林业大学 A method of locust tree of sowing grass seeds by duster on the exposed palisades of shale is efficiently replied immediately green fastly and improves soil pH value
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Application publication date: 20171024