CN105706555A - Saline-alkali soil greening engineering original soil improvement structure and construction method thereof - Google Patents

Saline-alkali soil greening engineering original soil improvement structure and construction method thereof Download PDF

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CN105706555A
CN105706555A CN201610135119.9A CN201610135119A CN105706555A CN 105706555 A CN105706555 A CN 105706555A CN 201610135119 A CN201610135119 A CN 201610135119A CN 105706555 A CN105706555 A CN 105706555A
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soil
foundation trench
saline
vent
air
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CN105706555B (en
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刘海兵
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刘海兵
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    • 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

Abstract

The invention provides a saline-alkali soil greening engineering original soil improvement structure which comprises a foundation trench, wherein the bottom of the foundation trench forms a slope towards a water discharge side; multiple blind drains are dug in the bottom of the foundation trench; a plastic film is paved at the bottom of the foundation trench and is uniformly provided with multiple vent holes; the lower ends of the vent holes are connected with osmosis pipes; a geotechnical cloth covers the upper sides of the vent holes; the vent holes are filled with stones. The invention also discloses a construction method of the saline-alkali soil greening engineering original soil improvement structure. The method comprises the following steps of earth excavation, blind drain digging, isolation layer paving, inning backfilling, fresh water salt elimination, chemical and physical improvement and drainage ditch digging. Through foundation trench digging, the blind drains and the osmosis pipes are arranged at the bottom of the foundation trench, the plastic film is paved at the bottom of the foundation trench and is uniformly provided with multiple vent holes, and the lower ends of the vent holes are connected with the osmosis pipes; the dug saline soil is layered and backfilled; by use of fresh water salt elimination, chemical and physical improvement, and final drainage ditch digging, accumulative water drainage is realized, the underground water level is reduced, the improved saline-alkali soil is good in soil permeability, rapid in nutrient release and high in osmotic coefficient; an organic fertilizer can improve the soil structure, and chemical raw materials can be applied in sterilization and alkali reduction.

Description

Saline land greening engineering original soil structure-improved and construction method thereof
Technical field
The present invention relates to a kind of saline land greening engineering original soil structure-improved.
The invention still further relates to a kind of saline land greening structure improved construction method of engineering original soil.
Background technology
Coastal area soil salt content is high, alkalization is serious, venting and water permeable is poor, cause coastal area forest kind rare, ecosystem is fragile, soil moved in improve the original plantation, the method for soil removal and replacement greening that past adopts do not simply fail to improve the present situation of soil root, and farmland and ecological environment are caused great destruction.Therefore, original soil improvement is needed to solve the problems referred to above.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of saline land greening engineering original soil structure-improved.
The present invention also to solve the technical problem that and be to provide a kind of saline land greening structure improved construction method of engineering original soil.
For solving above-mentioned technical problem, the saline land greening engineering original soil structure-improved of the present invention, it includes foundation trench, puts domatic to the formation of draining side bottom described foundation trench, and bottom described foundation trench, excavation has multiple tracks french drain, it is equipped with plastic sheeting bottom described foundation trench, uniformly having multiple air-vent on described plastic sheeting, the lower end of described air-vent connects water-permeable pipe, and the top of described air-vent is coated with geotextiles, fill in described air-vent and have stone, bottom described water-permeable pipe, lead to gutter.
The saline land greening structure improved construction method of engineering original soil of the present invention, comprises the following steps:
(1) earth excavation: excavation foundation trench, carries out putting slope to draining side bottom foundation trench;
(2) french drain is offered: bottom foundation trench, excavate multiple tracks french drain, in french drain, bury water-permeable pipe underground;
(3) sealing coat is laid: laying plastic sheeting bottom foundation trench as sealing coat, plastic sheeting uniformly has multiple air-vent, air-vent digs downwards deep 28-32 centimetre, connects water-permeable pipe under air-vent, and the interior stone of air-vent is filled, and air-vent covers by geotextiles;
(4) backfill is enclosed and cultivated: the solonchak back-filling in layers dug out, with artificial by solonchak levee-surrounded field word;
(5) fresh water salt discharge: utilize natural rainfall and irrigation, every square metre of soil fresh water amount is for being not less than 0.1 cube, to reduce salinity in soil, waters once permeable again, subdue saline and alkaline before excessively within 12-15 days, taking advantage of saline and alkaline not returning;
(6) Chemical Physics improvement: select acid fertilizer, rice husk or the straw smashed, soddy soil using the quality proportioning of 4:1:4-5 as physics raw material, uniformly it is sprinkled in salt-soda soil, consumption is every square metre of 20-22kg, ferrous sulfate and sulfur semi-annular jade pendant is selected to press the quality proportioning of 8:2-3 as chemical raw material, uniformly it is sprinkled in saline-alkali soil, consumption is every square metre of 200-825g, then uses rotary cultivator the saline-alkali soil rotary tillage being sprinkled into material to be stirred;
(7) excavation gutter: put side, slope bottom foundation trench and offer gutter, water-permeable pipe is unified enters gutter, drains the water away, lowering of watertable.
The benchmark of excavation foundation trench digs deep 60 centimetres, carries out putting slope to draining side by 1:100 bottom foundation trench.
Adjacent french drain spacing 3 meters, french drain wide 20 centimetres, deep 40 centimetres.
Every 5-7 square metre of air-vent opening a diameter 50 centimetres on plastic sheeting.
Beneficial effects of the present invention: by excavating foundation trench, french drain and water-permeable pipe are set bottom foundation trench, bottom foundation trench, lay plastic sheeting, offer multiple air-vent, under air-vent, connect water-permeable pipe, the solonchak back-filling in layers dug out, utilize fresh water salt discharge, Chemical Physics improvement, finally excavate gutter, drain the water away, lowering of watertable, salt-soda soil after improvement, soil permeability is good, and nutrients release is fast, infiltration coefficient is high, fertilizer can improve Soil structure, is conducive to tree root to grow, and improves the survival rate of trees, using of chemical raw material can kill mattress, can drop again alkali.
Accompanying drawing explanation
Fig. 1 is earth excavation schematic diagram.
Fig. 2 is excavation french drain schematic diagram.
Fig. 2 a is A-A schematic diagram in Fig. 2.
Fig. 3 is for laying sealing coat schematic diagram.
Fig. 3 a is B-B schematic diagram in Fig. 3.
Fig. 4 is that schematic diagram is enclosed and cultivated in backfill.
Fig. 4 a is the top view of Fig. 4.
Fig. 5 is excavation gutter schematic diagram.
Wherein, 1, foundation trench, 2, put domatic, 3, french drain, 4, plastic sheeting, 5, air-vent, 6, water-permeable pipe, 7, geotextiles, 8, stone, 9, gutter.
Detailed description of the invention
In order to deepen the understanding of the present invention, below the invention will be further described, this embodiment is only used for explaining the present invention, is not intended that the restriction to protection scope of the present invention.
The saline land greening engineering original soil structure-improved of the present invention, it includes foundation trench 1, formed to draining side bottom foundation trench 1 and put domatic 2, bottom foundation trench 1, excavation has multiple tracks french drain 3, is equipped with plastic sheeting 4 bottom foundation trench 1, every 5-7 square metre of air-vent 5 opening a diameter 50 centimetres on plastic sheeting 4, the lower end of air-vent 5 connects water-permeable pipe 6, the top of air-vent 5 is coated with geotextiles 7, fills and has stone 8, lead to gutter 9 bottom water-permeable pipe 6 in air-vent 5.Wherein, adjacent french drain spacing 3 meters, french drain wide 20 centimetres, deep 40 centimetres.
Carrying out greening construction on salt-soda soil, owing to soil permeability is poor, soil temperature rises slow, and in soil, aerobic microorganism activity is poor, and nutrients release is slow, and infiltration coefficient is low, ultimately results in plant percent not high.Therefore before construction, tackle soil carry out sample detecting, then take effective ameliorative measure, the saline land greening engineering original soil improvement construction method of the present invention, specifically comprise the following steps that
(1) earth excavation: shown in Fig. 1, excavates foundation trench 1, and it is 60 centimetres that benchmark digs deep d, carries out putting slope to draining side by 1:100 bottom foundation trench 1, so may insure that soil internal water accumulation flows in a direction set;
(2) offering shown in french drain: Fig. 2 and 2a, pressing b in b rice excavation multiple tracks french drain 3, figure together bottom foundation trench 1 is 3, the wide of french drain 3 is 20 centimetres, the deep a of french drain 3 is 40 centimetres, and buries water-permeable pipe 6 in french drain 3 underground, and this water-permeable pipe 6 is mainly used in collecting in soil moisture content and discharges to side;
(3) lay shown in sealing coat: Fig. 3 and 3a, the plastic sheeting 4 of thick 10 is laid as sealing coat bottom foundation trench 1, open always through the air-vent 5 of 50 centimetres at plastic sheeting 4 for every 5-7 square metre simultaneously, dig downwards deep 28-30 centimetre, air-vent connects water-permeable pipe 6 for 5 times, fills with the stone 8 between particle diameter 40-60 μm, air-vent 5 covers by geotextiles 7 in air-vent 5, both can breathe freely in this hole, it is also possible to infiltration collection lower in soil is entered water-permeable pipe 6;
(4) backfill is enclosed and cultivated: shown in Fig. 4 and 4a, the solonchak dug out, 30 centimetres (because rotary cultivator tilling depth is 30 centimetres, be so easy to stirring) as one layer, back-filling in layers, with artificial by solonchak levee-surrounded field word, be beneficial to irrigate salt discharge;
(5) fresh water salt discharge: utilize natural rainfall and irrigation, every square of soil fresh water amount is for being not less than 0.1 cube, and to reduce salinity in soil, 12-15 waters once permeable again before taking advantage of saline and alkaline not returning excessively, subdues saline and alkaline.
(6) Chemical Physics improvement: select acid fertilizer, rice husk or the straw smashed, soddy soil using the quality proportioning of 4:1:4-5 as physics raw material, uniformly it is sprinkled in salt-soda soil, consumption is every square metre of 20-22kg, ferrous sulfate and sulfur semi-annular jade pendant is selected to press the quality proportioning of 8:2-3 as chemical raw material, uniformly it is sprinkled in saline-alkali soil, consumption is the every square metre of 200-825g(consumption pH value depending on soil, general 1/m2Sulfur semi-annular jade pendant powder, decline 2 pH value units, 0.15/m2Ferrous sulfate, 0.5-1 pH value unit of decline), then use rotary cultivator the saline-alkali soil rotary tillage being sprinkled into material to be stirred;
Organic fertilizer changes salt solodization, and fertilizer can improve Soil structure, and can also produce in the acidic materials such as humic acid in putrefaction process and alkalescence, is conducive to tree root to grow, improves the survival rate of trees.Ferrous sulfate can quickly reduce P in soil H-number, and sulfur semi-annular jade pendant, as long-acting improvement raw material, both can kill mattress, can drop again alkali.
(7) excavation gutter: shown in Fig. 5, put side, slope and offer gutter 9 bottom foundation trench 1, water-permeable pipe 6 is unified enters gutter 9, drains the water away, lowering of watertable.The big feature of the one of saline-alkali soil is that level of ground water is high, and evaporation capacity is big, after being evaporated by capillary water with saline and alkaline water in a large number, stay in ground by saline and alkaline, therefore control the saline and alkaline drainage system that also needs to improve, words with good conditionsi, gutter can be excavated, make hydrops be got rid of, thus lowering of watertable.

Claims (7)

1. saline land greening engineering original soil structure-improved, it is characterized in that: it includes foundation trench, put domatic to the formation of draining side bottom described foundation trench, bottom described foundation trench, excavation has multiple tracks french drain, is equipped with plastic sheeting, described plastic sheeting uniformly has multiple air-vent bottom described foundation trench, the lower end of described air-vent connects water-permeable pipe, the top of described air-vent is coated with geotextiles, and filling in described air-vent has stone, leads to gutter bottom described water-permeable pipe.
2. saline land greening engineering original soil structure-improved according to claim 1, it is characterised in that: adjacent french drain spacing 3 meters, french drain wide 20 centimetres, deep 40 centimetres.
3. saline land greening engineering original soil structure-improved according to claim 1, it is characterised in that: every 5-7 square metre of air-vent opening a diameter 50 centimetres on plastic sheeting.
4. the saline land greening structure improved construction method of engineering original soil according to claim 1, it is characterised in that: comprise the following steps:
(1) earth excavation: excavation foundation trench, carries out putting slope to draining side bottom foundation trench;
(2) french drain is offered: bottom foundation trench, excavate multiple tracks french drain, in french drain, bury water-permeable pipe underground;
(3) sealing coat is laid: laying plastic sheeting bottom foundation trench as sealing coat, plastic sheeting uniformly has multiple air-vent, air-vent digs downwards deep 28-32 centimetre, connects water-permeable pipe under air-vent, and the interior stone of air-vent is filled, and air-vent covers by geotextiles;
(4) backfill is enclosed and cultivated: the solonchak back-filling in layers dug out, with artificial by solonchak levee-surrounded field word;
(5) fresh water salt discharge: utilize natural rainfall and irrigation, every square metre of soil fresh water amount is for being not less than 0.1 cube, to reduce salinity in soil, waters once permeable again, subdue saline and alkaline before excessively within 12-15 days, taking advantage of saline and alkaline not returning;
(6) Chemical Physics improvement: select acid fertilizer, rice husk or the straw smashed, soddy soil using the quality proportioning of 4:1:4-5 as physics raw material, uniformly it is sprinkled in salt-soda soil, consumption is every square metre of 20-22kg, ferrous sulfate and sulfur semi-annular jade pendant is selected to press the quality proportioning of 8:2-3 as chemical raw material, uniformly it is sprinkled in saline-alkali soil, consumption is every square metre of 200-825g, then uses rotary cultivator the saline-alkali soil rotary tillage being sprinkled into material to be stirred;
(7) excavation gutter: put side, slope bottom foundation trench and offer gutter, water-permeable pipe is unified enters gutter, drains the water away, lowering of watertable.
5. saline land greening engineering original soil according to claim 4 improvement construction method, it is characterised in that: the benchmark of excavation foundation trench digs deep 60 centimetres, carries out putting slope to draining side by 1:100 bottom foundation trench.
6. saline land greening engineering original soil according to claim 4 improvement construction method, it is characterised in that: adjacent french drain spacing 3 meters, french drain wide 20 centimetres, deep 40 centimetres.
7. saline land greening engineering original soil according to claim 4 improvement construction method, it is characterised in that: every 5-7 square metre of air-vent opening a diameter 50 centimetres on plastic sheeting.
CN201610135119.9A 2016-03-10 2016-03-10 Saline land greening engineering original soil structure-improved and its construction method Active CN105706555B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106385834A (en) * 2016-08-30 2017-02-15 山东胜伟园林科技有限公司 System for water-saving irrigation and salt discharge in saline-alkali land
CN107517613A (en) * 2017-10-09 2017-12-29 何锋 Saline-alkali soil improvement method
CN107624392A (en) * 2017-10-09 2018-01-26 何锋 Urban afforestation salt-soda soil Opsonizing method
CN107710944A (en) * 2017-10-09 2018-02-23 何锋 Water-saving sandwich-type saline and alkali land improvement method
CN109743922A (en) * 2019-03-21 2019-05-14 盐城市农产品质量监督检验测试中心 A kind of modification method of booth vegetable soil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102422735A (en) * 2011-09-16 2012-04-25 南通华林生物科技发展有限公司 Ecological integrated improved facility and improving method for saline and alkaline land
CN102726141A (en) * 2012-07-18 2012-10-17 张永康 Saline-alkali soil improvement facility and method
CN103141176A (en) * 2013-03-25 2013-06-12 天津泰达园林建设有限公司 Method for improving saline soil in excavated grooves of border trees in coastal region
CN205389381U (en) * 2016-03-10 2016-07-27 刘海兵 Good structure of former land reform of saline and alkaline land greening engineering

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102422735A (en) * 2011-09-16 2012-04-25 南通华林生物科技发展有限公司 Ecological integrated improved facility and improving method for saline and alkaline land
CN102726141A (en) * 2012-07-18 2012-10-17 张永康 Saline-alkali soil improvement facility and method
CN103141176A (en) * 2013-03-25 2013-06-12 天津泰达园林建设有限公司 Method for improving saline soil in excavated grooves of border trees in coastal region
CN205389381U (en) * 2016-03-10 2016-07-27 刘海兵 Good structure of former land reform of saline and alkaline land greening engineering

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106385834A (en) * 2016-08-30 2017-02-15 山东胜伟园林科技有限公司 System for water-saving irrigation and salt discharge in saline-alkali land
CN107517613A (en) * 2017-10-09 2017-12-29 何锋 Saline-alkali soil improvement method
CN107624392A (en) * 2017-10-09 2018-01-26 何锋 Urban afforestation salt-soda soil Opsonizing method
CN107710944A (en) * 2017-10-09 2018-02-23 何锋 Water-saving sandwich-type saline and alkali land improvement method
CN109743922A (en) * 2019-03-21 2019-05-14 盐城市农产品质量监督检验测试中心 A kind of modification method of booth vegetable soil

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