CN104206064A - Underground salt elimination method for saline and alkali land - Google Patents
Underground salt elimination method for saline and alkali land Download PDFInfo
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- CN104206064A CN104206064A CN201310218520.5A CN201310218520A CN104206064A CN 104206064 A CN104206064 A CN 104206064A CN 201310218520 A CN201310218520 A CN 201310218520A CN 104206064 A CN104206064 A CN 104206064A
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Abstract
The invention provides an underground salt elimination method for saline and alkali land. The process method includes the steps of surveying and staking out, field leveling, salt elimination trench digging, sand bed laying, salt elimination pipe laying and salt elimination well building, stone bed laying, geotechnical cloth laying and composite planting soil covering. The salt elimination effect is improved, the salt elimination cycle is shortened, planting can be carried out at any time, and the survival rate of plants is increased; content of salt and alkali in local soil is detected, organic fertilizer and vinasse are increased, and accordingly the aims of quickly eliminating salt and greening can be achieved, cost is low, and the method is convenient to use and suitable for being used and popularized in a large scale.
Description
Technical field
The present invention relates to soil melioration technical field, be specifically related to a kind of underground salt discharge method in saline land.
Background technology
At present, the area in saline land constantly, expanding, comprises arable land, forest land etc., and saline land area approaches 1,000,000,000 hectares in the world, and the saline land area of China is 100,000,000 hectares, occupies 1/10th of world's share; The universities and colleges of lot of domestic and foreign, the governing problem in reply saline land is being studied always by scientific research institutions, river construction method, biological harnessing method, chemical-agent technique and the Chinese scholar that great majority adopt are permitted, and will is female also proposes flush discharge order by the desalinization of soil by flooding or leaching method of " light after first heavy; first to wash heavy saline, then wash light saline land and behind first upstream downstream within the scope of sublateral canal " etc. at the beginning of the eighties in last century.
But these methods, on certain basis, have also obtained certain effect, but numerous technical schemes that show and construction technology relatively lag behind, and to China, urgently land resources leaved for development is slower, and cost is higher, salt discharge DeGrain.
Therefore, the present invention develops on the basis that mainly solves more than currently available technology existence deficiency.
Summary of the invention
Technical problem solved by the invention is to provide a kind of to be increased salt discharge effect and shortens the salt discharge cycle, reaches at any time fast the underground salt discharge method in saline land of planting, increase plant survival rate.
Based on above-mentioned purpose, technical problem solved by the invention realizes by the following technical solutions:
A kind of underground salt discharge method in saline land, the process step adopting is as follows:
1) measure setting-out: measure salt discharge regional location and salt discharging pipe port coordinate;
2) levelling of the land: site clearing foreign material, carry out the smooth of salt discharge construction area place;
3) dig salt discharge ditch: according to design section, excavation salt discharge pipe trench, comprises arm, planting bed, tree pond pipe trench and main pipe trench;
4) lay sand bedding course: sand bedding course is laid and put slope according to designing requirement 0.2-0.29%, flattens compacting after laying;
5) lay salt discharging pipe and build salt discharge well by laying bricks or stones: salt discharge pipeline is laid to salt discharge well direction by starting point, the bending radius of pipeline is not less than 0.6-0.65m, the gradient is not less than 0.2%, and salt discharge well inside and outside wall adopts 1:3 cement mortar to mix waterproof powder and whitewashes, and basis, shaft bottom adopts c15 concrete cushion;
6) paving blotter: arranging thickness is 200-210mm, and cobble-stone diameter is 1-2cm, and content of stone powder must not be greater than 5%;
7) geotextiles: adopt nature bridging method, manually roll paving, geotextiles longitudinal lap joint width is more than 20cm, and the distance of transverse lap is greater than 1.5m;
8) cover composite plant soil: salt discharge layer is complete, and backfill planting soil, completes desalting technique.
Further, described composite plant soil, the deal ratio adopting according to salt alkali content difference is:
When salt content is 0.3-0.6, every square needs fertilizer 40-46KG, vinasse 4-6KG;
When salt content is 0.6-1.0, every square needs fertilizer 67-75KG, vinasse 6-9KG;
When salt content is 1.0-1.5, every square needs fertilizer 113-130KG, vinasse 9-10KG.
Further, described fertilizer is cow dung or farmyard manure.
Further, in described step 3) in salt discharge pipe trench, the suitable for reading wide 400-420mm of arm, planting bed and tree pond pipe trench, the wide 300-320mm of end opening, the degree of depth is not less than 180-190mm; Main pipe trench wide 400-420mm suitable for reading, the wide 300-320mm of end opening, degree of depth 250-260mm.
The invention has the beneficial effects as follows, this method increases salt discharge effect and shortens the salt discharge cycle, can reach at any time the survival rate of planting, increase Plants, by the detection to local soil property salt alkali content, by the fertilizer and the vinasse that increase, can also reach the order ground of quick salt discharge greening, and cost is low, easy to use, be applicable to large-area applying.
Embodiment
For further understanding feature of the present invention, technological means and the specific purposes that reach, function, below in conjunction with embodiment, the present invention is described in further detail.
A kind of underground salt discharge method in saline land, the process step adopting is as follows:
1) measure setting-out: with total powerstation by measuring the position of measuring every smoke evacuation on control point and go territory, measure the coordinate position of salt discharging pipe port, utilize spirit level that level absolute altitude control point is set at the scene, the control of on-the-spot absolute altitude during with convenient construction, emits the particular location of salt discharge pipe trench according to construction drawing;
2) levelling of the land: the foreign material such as the rubbish of site clearing, dregs, ruins building waste, stone, weeds, according to the absolute altitude control point of measuring, the poor larger place of excavator raising, then utilizes bulldozer that the place of salt discharge construction area is undertaken smooth by salt discharge layer absolute altitude;
3) dig salt discharge ditch: measure unwrapping wire according to design and construction drawing, utilize excavator or groover in strict accordance with design section excavation salt discharge pipe trench, the suitable for reading wide 400-420mm of arm, planting bed and tree pond pipe trench, the wide 300-320mm of end opening, the degree of depth is not less than 180-190mm; Main pipe trench wide 400-420mm suitable for reading, the wide 300-320mm of end opening, degree of depth 250-260mm, makes it have to the gradient of salt discharge water groove flashing; Smooth, compacting must be cleared up in base, and must not exceed ± 20mm of the deviation of leveling ensures that the gradient of salt discharge pipeline is not less than 0.2%;
4) lay sand bedding course: lay coarse sand bed course according to drawing requirement job specfication, sand bedding course is laid and put slope according to designing requirement 0.2-0.29%, flattens compacting after laying;
5) lay salt discharging pipe and build salt discharge well by laying bricks or stones: salt discharge pipeline is laid to salt discharge well direction by starting point, the bending radius of pipeline is not less than 0.6-0.65m, the gradient is not less than 0.2%, the two screw threads of upvc of salt discharge arm employing 63 ooze pipe, main adopts the double-wall corrugated pipe of upvc110, and main drains into town road rainwater piping or lake region, center nearby according to Design Requirement Drawing; Salt discharging pipe initiating terminal must seal with upvc pipe plug, and joint is wound around closely knit with brown skin, and end enters well casing mouth must stretch out borehole wall face 50-60mm, and with nonwoven wrapping, must stay the surplus that is greater than 15cm at the bottom of salt discharging pipe at the bottom of salt discharge well simultaneously; In salt discharge arm, planting bed and tree pond, pipe top is positioned under coarse sand bed course top and is not less than 30mm place, and main pipe bottom is in bottom 50-55mm;
Salt discharge well inside and outside wall adopts 1:3 cement mortar to mix waterproof powder and whitewashes, basis, shaft bottom adopts c15 concrete cushion, the installation requirement strict implement atlas specification of well lid and well seat is carried out standard construction, and well lid surface maintains an equal level with greenery patches, wants tight, prevents from leaking when pipeline passes the borehole wall;
6) paving blotter: after salt discharging pipe has been laid, carry out the laying of blotter, arranging thickness is 200-210mm, cobble-stone diameter is 1-2cm, content of stone powder must not be greater than 5%, for effectively controlling smooth stone thickness, should play a high process control dress that 25-30cm is high every 10-11m spacing, after rubble is smooth, ensure that brick exposes and be not more than 5cm;
7) geotextiles: adopt nature bridging method, manually roll paving, geotextiles longitudinal lap joint width is more than 20cm, the distance of transverse lap is greater than 1.5m, on domatic, anchoring is carried out in one end of geotextiles, then coiled material must domaticly be put down to ensure that geotextiles keeps tension, all geotextiles are all pushed down with sand pocket, avoid geotextiles to roll stone and expose;
8) cover composite plant soil: salt discharge layer is complete, and backfill meets planting soil, and the planting soil adopting, according to the difference of saline land content, adopts different deals, and when salt content is 0.3-0.6, every square needs fertilizer 40-46KG, vinasse 4-6KG; When salt content is 0.6-1.0, every square needs fertilizer 67-75KG, vinasse 6-9KG; When salt content is 1.0-1.5, every square needs fertilizer 113-130KG, vinasse 9-10KG, and the fertilizer adopting is cow dung or farmyard manure; Composite plant soil adopts dumper from edge backfill, in order to avoid damage salt discharging pipe by pressure, bulldozer coordinates smooth paving, when backfill planting soil thickness reaches after 45-50cm, can adopt dumper directly to falling soil in place, planting soil thickness requires to construct according to plantation nursery stock situation according to planting soil thickness, shrub and ground are generally not less than 80cm by region, the arbor district 120-150cm that plants, adopts such processing step like this, completes underground desalting technique.
Embodiment, this process technology is widely applied, and obtains good effect at the supporting project in new city Bo Hai park, Huanghua, Cangzhou, Hebei Province, chemical industry main road, Zhong Jie industrial park, Cangzhou City view earthwork salt discharge engineering, the public river scape of Lee Ecological Corridor landscape engineering.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. the underground salt discharge method in saline land, is characterized in that, the process step adopting is as follows:
1) measure setting-out: measure salt discharge regional location and salt discharging pipe port coordinate;
2) levelling of the land: site clearing foreign material, carry out the smooth of salt discharge construction area place;
3) dig salt discharge ditch: according to design section, excavation salt discharge pipe trench, comprises arm, planting bed, tree pond pipe trench and main pipe trench;
4) lay sand bedding course: sand bedding course is laid and put slope according to designing requirement 0.2-0.29%, flattens compacting after laying;
5) lay salt discharging pipe and build salt discharge well by laying bricks or stones: salt discharge pipeline is laid to salt discharge well direction by starting point, the bending radius of pipeline is not less than 0.6-0.65m, the gradient is not less than 0.2%, and salt discharge well inside and outside wall adopts 1:3 cement mortar to mix waterproof powder and whitewashes, and basis, shaft bottom adopts c15 concrete cushion;
6) paving blotter: arranging thickness is 200-210mm, and cobble-stone diameter is 1-2cm, and content of stone powder must not be greater than 5%;
7) geotextiles: adopt nature bridging method, manually roll paving, geotextiles longitudinal lap joint width is more than 20cm, and the distance of transverse lap is greater than 1.5m;
8) cover composite plant soil: salt discharge layer is complete, and backfill planting soil, completes desalting technique.
2. the underground salt discharge method in saline land according to claim 1, is characterized in that,
Described composite plant soil, the deal ratio adopting according to salt alkali content difference is:
When salt content is 0.3-0.6, every square needs fertilizer 40-46KG, vinasse 4-6KG;
When salt content is 0.6-1.0, every square needs fertilizer 67-75KG, vinasse 6-9KG;
When salt content is 1.0-1.5, every square needs fertilizer 113-130KG, vinasse 9-10KG.
3. the underground salt discharge method in saline land according to claim 2, is characterized in that, described fertilizer is cow dung or farmyard manure.
4. the underground salt discharge method in saline land according to claim 1, is characterized in that, in described step 3) in salt discharge pipe trench, and the suitable for reading wide 400-420mm of arm, planting bed and tree pond pipe trench, the wide 300-320mm of end opening, the degree of depth is not less than 180-190mm; Main pipe trench wide 400-420mm suitable for reading, the wide 300-320mm of end opening, degree of depth 250-260mm.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104521363A (en) * | 2015-01-19 | 2015-04-22 | 天津农学院 | Reclamation method for rural residence lands on coastal saline land region |
| CN104904469A (en) * | 2015-05-29 | 2015-09-16 | 山东龙泽生态环境开发有限公司 | Greening method for controlling salt elimination area by area in coastal saline area |
| CN105165167A (en) * | 2015-09-23 | 2015-12-23 | 潍坊友容实业有限公司 | Alkali soil desalting method |
| CN106385845A (en) * | 2016-08-30 | 2017-02-15 | 山东胜伟园林科技有限公司 | Root irrigation water-saving cultivation method for plants in secondary saline-alkali land |
| CN106385844A (en) * | 2016-08-30 | 2017-02-15 | 山东胜伟园林科技有限公司 | Method for water saving and salt avoidance |
| CN107027369A (en) * | 2017-05-31 | 2017-08-11 | 山东省果树研究所 | Return salt-soda soil control system and its method in a kind of greenhouse |
| CN107960168A (en) * | 2017-07-24 | 2018-04-27 | 天津市德宇生物工程技术有限公司 | A kind of greening method of high water level strand barged-in fill |
| CN108283031A (en) * | 2017-11-07 | 2018-07-17 | 广州普邦园林股份有限公司 | A kind of marine solonchak seepage pipe Salt discharge method |
| CN109496486A (en) * | 2018-12-29 | 2019-03-22 | 山东省林业科学研究院 | A kind of alkaline land improving greening method |
| CN110100518A (en) * | 2019-05-25 | 2019-08-09 | 天津市海岸盐碱地生态绿化工程有限公司 | A kind of comprehensive improving method for coastal saline soil |
| CN111097790A (en) * | 2019-12-24 | 2020-05-05 | 鞍钢集团矿业有限公司 | Method for repairing saline-alkali soil by using salt discharge pipe, iron tailings and modifier |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104521363A (en) * | 2015-01-19 | 2015-04-22 | 天津农学院 | Reclamation method for rural residence lands on coastal saline land region |
| CN104904469A (en) * | 2015-05-29 | 2015-09-16 | 山东龙泽生态环境开发有限公司 | Greening method for controlling salt elimination area by area in coastal saline area |
| CN105165167A (en) * | 2015-09-23 | 2015-12-23 | 潍坊友容实业有限公司 | Alkali soil desalting method |
| CN105165167B (en) * | 2015-09-23 | 2017-07-07 | 潍坊友容实业有限公司 | Method for desalting salinized soil |
| CN106385845A (en) * | 2016-08-30 | 2017-02-15 | 山东胜伟园林科技有限公司 | Root irrigation water-saving cultivation method for plants in secondary saline-alkali land |
| CN106385844A (en) * | 2016-08-30 | 2017-02-15 | 山东胜伟园林科技有限公司 | Method for water saving and salt avoidance |
| CN107027369A (en) * | 2017-05-31 | 2017-08-11 | 山东省果树研究所 | Return salt-soda soil control system and its method in a kind of greenhouse |
| CN107960168A (en) * | 2017-07-24 | 2018-04-27 | 天津市德宇生物工程技术有限公司 | A kind of greening method of high water level strand barged-in fill |
| CN108283031A (en) * | 2017-11-07 | 2018-07-17 | 广州普邦园林股份有限公司 | A kind of marine solonchak seepage pipe Salt discharge method |
| CN109496486A (en) * | 2018-12-29 | 2019-03-22 | 山东省林业科学研究院 | A kind of alkaline land improving greening method |
| CN110100518A (en) * | 2019-05-25 | 2019-08-09 | 天津市海岸盐碱地生态绿化工程有限公司 | A kind of comprehensive improving method for coastal saline soil |
| CN110100518B (en) * | 2019-05-25 | 2022-03-18 | 天津泰达园林建设有限公司 | Comprehensive improvement method for seashore saline soil |
| CN111097790A (en) * | 2019-12-24 | 2020-05-05 | 鞍钢集团矿业有限公司 | Method for repairing saline-alkali soil by using salt discharge pipe, iron tailings and modifier |
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Application publication date: 20141217 |