AU2020102840A4 - A method of soil secondary improvement in road median strip - Google Patents
A method of soil secondary improvement in road median strip Download PDFInfo
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- AU2020102840A4 AU2020102840A4 AU2020102840A AU2020102840A AU2020102840A4 AU 2020102840 A4 AU2020102840 A4 AU 2020102840A4 AU 2020102840 A AU2020102840 A AU 2020102840A AU 2020102840 A AU2020102840 A AU 2020102840A AU 2020102840 A4 AU2020102840 A4 AU 2020102840A4
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- Australia
- Prior art keywords
- leaching
- soil
- ditch
- median strip
- layer
- Prior art date
- 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.)
- Ceased
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- 239000002689 soil Substances 0.000 title claims abstract description 51
- 230000006872 improvement Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002386 leaching Methods 0.000 claims abstract description 36
- 150000003839 salts Chemical class 0.000 claims abstract description 25
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims abstract description 4
- 239000003337 fertilizer Substances 0.000 claims description 10
- 238000003971 tillage Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 238000003973 irrigation Methods 0.000 claims description 4
- 230000002262 irrigation Effects 0.000 claims description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical class [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/40—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure
- A01G24/44—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure in block, mat or sheet form
- A01G24/46—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure in block, mat or sheet form multi-layered
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a method of soil secondary improvement in road median strip,
belonging to the technical field of soil improvement. The method includes the following steps.
Excavating a leaching ditch for salt drainage in the middle of the median strip, and then setting
up organic column in the leaching ditch; Then laying non-woven fabric in the leaching ditch,
fixing the non-woven fabric on the side wall of the leaching ditch; Backfilling medical stone
and blind tube to form a leaching layer; After the leaching layer is backfilled, wrapping the
whole leaching layer with non-woven fabric and fixing the non-woven fabric; Backfilling the
soil layer on the ditch, leveling and fertilizing the soil, and then irrigating it after casting out
narrow border. The method creates suitable space for the root system of the above-ground plant
by underground engineering, so that the root system can grow better, which can not only
construct quickly, reduce the dust caused by earthwork, but also save the land resources.
1/2
15Y11
Fiur I
Description
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[01] The invention relates to the technical field of soil improvement, in particular to a method of soil secondary improvement in road median strip.
[02] The greening of the road median strip plays an important role in the whole road greening system, but in the coastal area, especially in the saline-alkali land, the plant growth in road median strip is poor. The annual replacement of the above-ground plants cannot guarantee the survival rate of the plants up to 80%, wasting a lot of human and material resources. The main reasons are as follows. Firstly, salt drainage scheme design is the same, which does not take plant growth as the main reference standard; Secondly, after foreign soil amelioration, the secondary salinization of the soil due to the lack of salt drainage is serious; Thirdly, it did not realize the importance of water management in the late maintenance. How to improve the soil has become an urgent problem to be solved, especially for the secondary improvement projects that have done salt drainage, but the effect is not good, and the soil has been salinized in the later stage.
[03] In order to overcome the shortcomings of the existing technology, the invention is to provide a method of soil secondary improvement in road median strip, ensuring the greening effect of the road median strip in saline-alkali land and saving various resources.
[04] In order to achieve the above object, the present invention provides the following scheme.
[05] The invention provides a method of soil secondary improvement in road median strip, which includes the following steps.
[06] (1) Excavating a leaching ditch for salt drainage in the middle of the median strip in the middle of the separation zone. The depth of the leaching ditch is 6075 cm and the width is 25-35 cm. The leaching ditch extends along the length direction of the median strip;
[07] (2) After trenching, setting up organic column at each interval of 10-12 m in the leaching ditch;
[08] (3) Laying non-woven fabric in the leaching ditch, and fixing the non woven fabric on the side wall of the leaching ditch;
[09] (4) Backfilling medical stone and blind tube to form a leaching layer;
[010] (5) Wrapping the whole leaching layer with non-woven fabric and fixing the non-woven fabric after the leaching layer is backfilled;
[011] (6) Backfilling the soil layer on the ditch, and leveling the soil
[012] (7) Applying improved fertilizer on the well-leveled soil and mixing with rotary tillage; the thickness of the improved fertilizer is 20-22% of the depth of rotary tillage;
[013] (8) Casting out narrow border with length of 8~12m and width of 0.8~1.2m for intermittent irrigation in which the water-soil mass ratio is 1:2: 1.
[014] As a further improvement of the invention, the depth of the leaching layer in step (1) is 60cm or 70cm.
[015] As a further improvement of the invention, a column of organic matter is struck at each interval of 10 m in step (2).
[016] As a further improvement of the invention, the specification of the non woven fabric used in the step (3) is 70100g/m 2 , and the non-woven fabric is fixed on the leaching layer with a bamboo stick or iron wire.
[017] As a further improvement of the invention, the thickness of the inner shower layer in the leaching layer in step (4) is 20-30 cm.
[018] As a further improvement of the invention, the modified fertilizer is an acid modified fertilizer containing active calcium ions.
[019] The invention discloses the following technical effects.
[020] (1) The method of the invention ensures the greening effect of the road median strip of the saline-alkali land and saves various resources. The invention provides a new type of soil secondary improvement method. The method creates suitable space for the root system of the above-ground plant by underground engineering, so that the root system can grow better, which can not only construct quickly, reduce the dust caused by earthwork, but also save the land resources..
[021] (2) The method described in the present invention mainly aims at the secondary salinization of foreign soil for projects that have done drainage before, but the engineering measures are not done well, and that the depth of salt discharge is not set according to the growth of ground cover plant roots. Considering the convenience of the whole construction and the final engineering effect in the road median strip, the salt drainage ditch is added on the basis of the original salt drainage to accelerate the soil salt drainage. It can reduce engineering quantity, improve work efficiency and shorten construction period.
[022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings which are required to be used in the embodiments will be briefly described below, and it will be apparent to those skilled in the art that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained from these drawings without devoting inventive labor to those skilled in the art.
[023] Figure 1 is cross-section of soil secondary improvement in the road median strip.
[024] Figure 2 is a histogram of soil organic column in which 1-primary soil; 2 drain ditch; 3- drench layer; 4-organic column; 5-primary drench layer.
[025] Various exemplary embodiments of the present invention will now be described in detail, which should not be construed as a limitation of the invention, but rather should be construed as a more detailed description of certain aspects, features and embodiments of the invention.
[026] It should be understood that the terminology described herein is for the purpose of describing particular embodiments only and is not intended to be limitation of the invention. In addition, it should be understood that each intermediate value between the upper limit and the lower limit of the range is also specifically disclosed as far as the numerical range in the present invention is concerned. Each smaller range between intermediate values within any stated value or stated range and any other stated value or intermediate values within the stated range is also included within the present invention. The upper and lower limits of these smaller ranges may be independently included or excluded within the range.
[027] Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention relates. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing methods and/or materials related to said documents. The contents of this specification prevail in conflict with any incorporated document. Where contradictions exist, the definitions in this specification prevail.
[028] It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present specification without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art from the description of the invention. The specification and embodiments of the present application are exemplary only.
[029] As used herein, terms "comprising" "comprising" "having" "containing" and the like, are intended to be open terms, i. e., intended to include, but not be limited to.
[030] The saline-alkali land road in the embodiment of the invention takes the coastal area road as an example to illustrate the secondary soil improvement.
[031] EMBODIMENT 1
[032] In engineering practice, it is found that the secondary salinization occurred in the soil due to the lack of the detailed groundwater level height and the thickness of salt drainage layer in the whole design of some project. The depth of foreign soil in road median strip in the coastal area is more than 1 m, and the choice of plants on the ground is generally small shrub. This kind of engineering design is feasible in theory. However, due to the change of the position of the salt drainage wells (street lamp, indicator board), the rainwater and sewage cannot be effectively collected in the salt well in the actual operation process and the salt content in the soil also increases regularly with the seasonal change, which ultimately affects the survival of plants.
[033] Based on this situation, it is the key point to adjust the height of plant salt drainage layer and to improve the original soil in the road median strip. The depth of improved soil of the above-ground plant species, such as small shrubs or herbs, was 60 cm, and that of small trees was 70 cm. Opening 60cm/70cm deep drain ditch with a width of 30 cm based on the original salt drainage system (generally, the depth of the foreign soil is Im, and there is a spraying layer under it). And the leaching ditch extends along the length direction of the median strip. After trenching, setting up organic column at each interval of 10 m in the leaching ditch. Laying100g/m2 non-woven fabric in the leaching ditch, and fixing the non-woven fabric on the side wall of the leaching ditch with bamboo swab; then backfilling medical stone and blind tube with depth of 30cm, and wrapping the whole leaching layer with non-woven fabric after the bamboo swab was removed. Drawing the end of the blind pipe in the drainage ditch into the salt drainage well, and laid a layer of non-woven fabric or sunshade net on it. Finally, backfilled the original soil. The secondary salinization of soil is easy to occur in coastal areas due to the lack of salt discharge in the soil, and the salt concentration on the surface can be as high as1%, which can cause damage to plants. After this kind of underground structure adjustment, the secondary salt can be removed by irrigation, and the soil salt stress can be relieved. In the well-leveled soil, the improved fertilizer was applied and mixed with rotary tillage; the thickness of the improved fertilizer was % of the depth of rotary tillage. Casting out narrow border with length of 10 m and width of Im for intermittent irrigation in which the water-soil mass ratio is 1:2: 1. The soil in the road median strip was improved twice, and the soil salt content decreased from 1% to 0.3%, and the plant survival rate reached 90%. The specific results are shown in Table 1.
[034] Table 1
Soil Salt EU( . TDS( Number Test date depth content pH us/en) Salinity (g/kg) February 15, 0-30cm 13.50 8.1 3.69 1.8 1865 1 2020 30-60cm 12.70 8.1 3.68 1.8 1870 (Improvement Day) 60-90cm 11.59 8.1 3.70 1.8 1864 0-30cm 9.65 8.1 3.12 1.6 1573 2 April 1,2020 30-60cm 7.45 8.1 2.3 1.1 1321 60-90cm 6.64 8.1 2.2 1.1 1158 0-30cm 1.45 8.1 0.41 0.2 205 3 June1,2020 30-60cm 1.56 8.1 0.43 0.2 207 60-90cm 2.21 8.1 0.81 0.2 403
[035] It can be seen from Table 1 that the use of this kind of salt drainage structure in the road median strip where secondary salinization occurs in the existing salt drainage project can speed up the process of soil improvement and meet the requirements of civilized construction and environmental protection.
[036] Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms, in keeping with the broad principles and the spirit of the invention described herein.
[037] The present invention and the described embodiments specifically include the best method known to the applicant of performing the invention. The present invention and the described preferred embodiments specifically include at least one feature that is industrially applicable
Claims (6)
1. A method of soil secondary improvement in road median strip, wherein it includes following steps.
(1) Excavating a leaching ditch for salt drainage in the middle of the median strip in the middle of the separation zone. The depth of the leaching ditch is 60-75 cm and the width is 25-35 cm. The leaching ditch extends along the length direction of the median strip;
(2) After trenching, setting up organic column at each interval of 10-12 m in the leaching ditch;
(3) Laying non-woven fabric in the leaching ditch, and fixing the non-woven fabric on the side wall of the leaching ditch;
(4) Backfilling medical stone and blind tube to form a leaching layer;
(5) Wrapping the whole leaching layer with non-woven fabric and fixing the non-woven fabric after the leaching layer is backfilled;
(6) Backfilling the soil layer on the ditch, leveling the soil
(7) Applying improved fertilizer on the well-leveled soil and mixing with rotary tillage; the thickness of the improved fertilizer is 20-22% of the depth of rotary tillage;
(8) Casting out narrow border with length of 8-12m and width of 0.8~1.2m for intermittent irrigation in which the water-soil mass ratio is 1:2: 1.
2. A method of soil secondary improvement in road median strip according to claim 1, wherein the depth of the leaching layer in step (1) is 60cm or 70cm.
3. A method of soil secondary improvement in road median strip according to claim 1, wherein organic column is struck at each interval of 10 m in step (2).
4. A method of soil secondary improvement in road median strip according to claim 1, wherein the specification of the non-woven fabric used in step (3) is
-100g/m 2, and the non-woven fabric is fixed on the leaching layer with a bamboo stick or wire.
5. A method of soil secondary improvement in road median strip according to claim 1, wherein the thickness of the inner shower layer in the leaching layer is -30cm in step (4).
6. A method of soil secondary improvement in road median strip according to claim 1, wherein the improved fertilizer is an acid modified fertilizer containing activated calcium ions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020102840A AU2020102840A4 (en) | 2020-10-19 | 2020-10-19 | A method of soil secondary improvement in road median strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020102840A AU2020102840A4 (en) | 2020-10-19 | 2020-10-19 | A method of soil secondary improvement in road median strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020102840A4 true AU2020102840A4 (en) | 2020-12-17 |
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|---|---|---|---|
| AU2020102840A Ceased AU2020102840A4 (en) | 2020-10-19 | 2020-10-19 | A method of soil secondary improvement in road median strip |
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| AU (1) | AU2020102840A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114731917A (en) * | 2022-05-12 | 2022-07-12 | 塔里木大学 | Method for planting cyperus esculentus in saline-alkali soil in micro-furrow manner |
-
2020
- 2020-10-19 AU AU2020102840A patent/AU2020102840A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114731917A (en) * | 2022-05-12 | 2022-07-12 | 塔里木大学 | Method for planting cyperus esculentus in saline-alkali soil in micro-furrow manner |
| CN114731917B (en) * | 2022-05-12 | 2023-03-28 | 塔里木大学 | Method for planting cyperus esculentus in saline-alkali soil in micro-furrow manner |
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| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |