CN104499469B - Be applicable to the new method that seasonal ponding coal mine subsidence land is administered - Google Patents
Be applicable to the new method that seasonal ponding coal mine subsidence land is administered Download PDFInfo
- Publication number
- CN104499469B CN104499469B CN201510004597.1A CN201510004597A CN104499469B CN 104499469 B CN104499469 B CN 104499469B CN 201510004597 A CN201510004597 A CN 201510004597A CN 104499469 B CN104499469 B CN 104499469B
- Authority
- CN
- China
- Prior art keywords
- swag
- catchments
- land
- subsidence
- administering
- 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.)
- Expired - Fee Related
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
-
- 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
- A01G25/00—Watering gardens, fields, sports grounds or the like
Abstract
The invention discloses a kind of new method being applicable to seasonal ponding coal mine subsidence land and administering, its core concept utilizes " Control Engineering of catchmenting " to carry out overall balance to Subsidence Area water and soil resources, solve depression ground due to impeded drainage, cause the problem that farmland quality declines, flooded can row is built up in depression, the high-quality farmland that drought can be filled with.The major advantage of the method: one is the swag that catchments by building multiple dispersion, realizes the space regulation and control of water resource, improves the supportability of irrigating and draining flooded fields; Two is swag waters surface that loose shape distributes, and can increase the bio-diversity of administering district; Three is by building swag, can solve native source problem when Subsidence Area low-lying land is reclaimed.
Description
Technical field
The present invention relates to the new method that seasonal ponding coal mine subsidence land is administered, solve depression ground due to impeded drainage, cause the problem that farmland quality declines, flooded can row is built up in depression, the high-quality farmland that drought can be filled with.
Background technology
Coal is the most important energy of China, and wherein, 90% is exploited by well work mode.Mining subsidence causes a large amount of Land destruction, and how science administers depression damage soil is an urgent demand that the cultivated land protection of current China and environment of mining area are repaired.Because coal resources in China is widely distributed, natural conditions are different, and difference of resource is comparatively large, and Land destruction is various informative, cannot form unified governance model, need the administering method that the concrete damage condition exploitation for dissimilar district is applicable to.In region of no relief, China central and east, the damage form of mining subsidence caused by ground is continuous print subsidence basin.Although many scholars have carried out certain research for the improvement in this type damage soil, administering method is still comparatively extensive, does not carry out careful analysis to the water and soil resources condition of subsidence basin, proposes control measures targetedly.The present invention is directed to deficiency existing in current administering method, according to the requirement that coal mine subsidence land is administered, propose overall balance is carried out in utilization " Control Engineering of catchmenting " new method to Subsidence Area water and soil resources, the improvement of the present invention to the type coal mine subsidence land provides a kind of new thinking, has good application prospect.
Summary of the invention
Object of the present invention provides a kind of new method being applicable to seasonal ponding coal mine subsidence land and administering, " Control Engineering of catchmenting " is utilized to carry out overall balance to Subsidence Area water and soil resources, solve depression ground due to impeded drainage, cause the problem that farmland quality declines, flooded can row is built up in depression, the high-quality farmland that drought can be filled with.
1, swag prevention waterlogging conservation storage calculates
One of main purpose of building swag is exactly the waterlogging problem produced after rainfall with solving depression.According to requirement (can determine by average annual 24 hours maximum rainfalls) and the runoff coefficient of administering district's defence Storm Rainfall Standard, calculate swag prevention waterlogging conservation storage, design formulas is as follows:
V
1＝10×F×a×P
In formula: F is for administering district's area, hm
2;
A is runoff coefficient;
P is design storm amount, mm;
V
1for prevention waterlogging conservation storage, m
3.
2, swag drought resisting needs reservoir capacity to calculate
Another most important effect of building swag is exactly provide water source for crop irrigation, and ensure with its normal storage capacity the drought resisting requirement that crop is the most basic, the present invention adopts irrigating water quota to need reservoir capacity to calculate swag drought resisting.Its design formulas as:
V
2＝m×F×10
m＝100×(θ
max-θ
min)×γ×z÷η
In formula: V
2for swag drought resisting needs reservoir capacity, m
3.
F is irrigated area area, hm
2;
M is design irrigating water quota, mm
θ
maxfor the soil appropriated moisture upper limit, %
θ
minfor the soil moisture content lower limit that crop allows, %
γ is the dry density of soil, kg/cm
3
Z is the planned moist layer in soil degree of depth, cm
η is water efficiency of irrigation.
3, the determination of swag total capacity and swag quantity of catchmenting
Meet the swag aggregate storage capacity of drought resisting and prevention waterlogging requirement: V=V simultaneously
1+ V
2
According to irrigation requirement, the service radius of the single swag that catchments is 200 meters, and control area is by 4 hectares of calculating, then improvement district needs the swag number of catchmenting of building to be:
n＝0.25×F
In formula: n is swag number, individual
F is for administering district's area, hm
2;
The plane form of swag of catchmenting is rectangle, and swag water-storage depth is 3-5 rice, and side slope gets 1:1.
4, catchment the space layout of swag
According to the topographic features of Subsidence Area, swag spatially adopts " plum blossom " type layout as far as possible, can catchment better and irrigate.
5, Subsidence Area ponding regulates
Gutter is built along the terraced fields raised path through fields and improvement district field road, gutter adopts trapezoidal soil property gutter, cross dimensions is 20cm (bottom width) × 40cm (ditch depth) × 100cm (mouth is wide), pass through gutter, atmospheric precipitation is pooled in time the swag that catchments closed on, prevents the impact that a large amount of ponding grows field-crop.
6, irrigation method
Irrigation method adopts low pressure pipe irrigation.Bury underground pipe underground between ponding swag, underground pipe adopts ф 90 ㎜ low pressure Thin-Wall PVC pipe, and buried depth of pipeline, at 80 ㎝, underground pipe installs hydrant, hydrant spacing 40m, and field irrigation adopts plastic flexible pipe.Water lift power adopts 12 horsepower diesels.
7, catchment model for water quantity allocation between swag
In order to realize the flexible configuration of water resource in whole improvement district, catchmenting between swag and being linked by underground pipe, optimize water resource.
Technical scheme of the present invention is: a kind of new method being applicable to seasonal ponding coal mine subsidence land and administering, it is characterized in that first according to the orographic condition of Subsidence Area, Meteorological Characteristics and crop irrigation requirement, calculate and administer district and to catchment swag aggregate storage capacity, then the service radius of the swag that catchments is combined, calculate the swag number of catchmenting of administering district and needing to build, the swag that catchments spatially should adopt " plum blossom " type layout as far as possible according to orographic condition, gutter is built along the terraced fields raised path through fields and field road, catchment between swag and lay underground pipe, underground pipe installs hydrant, the swag that catchments is equipped with diesel engine and submersible pump is adjusted empty for the water yield and irrigates.
The major advantage of the method: one is the swag that catchments by building multiple dispersion, realizes the space regulation and control of water resource, improves the supportability of irrigating and draining flooded fields; Two is swag waters surface that loose shape distributes, and can increase the bio-diversity of administering district; Three is by building swag, can solve native source problem when Subsidence Area low-lying land is reclaimed.
Accompanying drawing explanation
Fig. 1 is schematic layout pattern of the present invention.
Fig. 2 is that schematic diagram is irrigated in field feedwater.
Fig. 3 is the sectional view of Fig. 2.
Wherein Reference numeral is: the terraced fields raised path through fields-1 gutter-2 underground pipe-3 field road-4 catchments swag-5 hydrant-6 submersible pump-7 plastic flexible pipe-8
Detailed description of the invention
In order to technical thought of the present invention is described better, be described for certain coal mine subsidence land below.Coal-mining subsidence ground area 35 hectares, maximum submergence depth 3.95 meters, adopts the method for building swag to administer the waterlogging problem on depression ground.Administering the average annual 24 hours maximum rainfalls in district is 90mm, and surface runoff coefficient is 0.3.
1, swag prevention waterlogging conservation storage calculates
Prevention waterlogging conservation storage is calculated according to formula above and above data:
V
1＝10×F×a×P＝10×35×0.3×90＝9450m
3
2, swag drought resisting needs reservoir capacity to calculate
1) irrigating water quota calculates
Administering district's soil is medium loam, and the dry density γ of soil gets 1.35 × 10
-3kg/cm
3;
Administer district's plantation wheat, planned moist layer in soil degree of depth z gets 50cm;
Suitable soil moisture content bound: θ
max=21.6%, θ
min=16.8%;
Water efficiency of irrigation η gets 0.85
Irrigating water quota:
m＝100×(θ
max-θ
Min)×γ×z÷η
＝100×(21.6-16.8)×1.35÷1000×50÷0.85
＝38.12mm
At this, irrigating water quota value 38mm, i.e. 380m
3/ hectare.
2) swag drought resisting needs reservoir capacity
Consider to build road, swag needs the reasons such as occupation of land, setting cultivated area is administer district's area 90%, then
V
2＝m×F×10＝38×35×0.9×10＝11970m
3
3, swag design aggregate storage capacity V=V
1+ V
2=9450+11970=21420m
3
4, to catchment swag quantity and layout
The control area of the single swag that catchments is by 4 hectares of calculating, then administering district needs the swag number of catchmenting of building to be:
N=0.25 × F=0.25 × 35=9
The single swag storage capacity that catchments: v=21420 ÷ 9=2380m
3
Setting the average water-storage depth of swag that catchments is 3 meters, and side slope gets 1:1, considers the assurance coefficient of 1.1, then the design size of the single swag that catchments: 30m (length) × 20m (wide) × 4.5m (deeply)=2700m
3.
Catchment swag space layout as shown in Figure 1.
The runoff investigation catchmented between swag 5 is realized by underground pipe 3.Underground pipe 3 adopts ф 90 ㎜ low pressure Thin-Wall PVC pipe, and buried depth of pipeline is at 80 ㎝, and hydrant 6 spacing 40m, field irrigation adopts plastic flexible pipe 8, and power adopts 12 horsepower diesels.Gutter 2 adopts trapezoidal soil property gutter.Cross dimensions is 20cm (bottom width) × 40cm (ditch depth) × 100cm (mouth is wide), and the swag 5 that catchments is equipped with diesel engine and submersible pump 7 is adjusted empty for the water yield and irrigates.
Irrigate space layout as shown in Figure 2.Irrigation method adopts low pressure pipe irrigation.Bury underground pipe 3 between ponding swag 5 underground, underground pipe 3 adopts ф 90 ㎜ low pressure Thin-Wall PVC pipe, and buried depth of pipeline, at 80 ㎝, underground pipe 3 is installed hydrant 6, hydrant 6 spacing 40m, and field irrigation adopts plastic flexible pipe 8.Water lift power adopts 12 horsepower diesels.
5, technical economic analysis
1) swag investment
The comprehensive unit price of swag earth excavation amount is 10 yuan/m
3, the investment of building swag is 21.42 ten thousand yuan, and the ancillary facility expense of water pump and pipeline is kept in mind by 20% of swag cost, is 4.28 ten thousand yuan.
2) swag year maintenance cost
In order to ensure the using function of swag, need carry out desilting maintenance every year to swag, its expense is kept in mind by 10% of its cost, and namely annual maintenance expense is 2.14 ten thousand yuan.
3) value added of economic benefit in the year after next is administered
Before improvement, owing to lacking water conservancy projects, plough and to yield poorly and unstable, average product is 3000kg/ hectare.Increase after water conservancy projects, the output increased in arable land 10%, grain unit price is 2.6 yuan/kg.The value added of administering economic benefit in the year after next is 270,000 yuan.
Claims (1)
1. be applicable to the new method that seasonal ponding coal mine subsidence land is administered, it is characterized in that first according to the orographic condition of Subsidence Area, Meteorological Characteristics and crop irrigation requirement, calculate and administer district and to catchment swag aggregate storage capacity, then the service radius of swag (5) of catchmenting is combined, calculate the swag that catchments (5) number of administering district and needing to build, the swag (5) that catchments spatially should adopt " plum blossom " type layout according to orographic condition, gutter (2) is built along the terraced fields raised path through fields (1) and field road (4), catchment between swag (5) and lay underground pipe (3), underground pipe (3) is installed hydrant (6), the swag (5) that catchments is equipped with diesel engine and submersible pump (7) is adjusted empty for the water yield and irrigates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004597.1A CN104499469B (en) | 2015-01-06 | 2015-01-06 | Be applicable to the new method that seasonal ponding coal mine subsidence land is administered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004597.1A CN104499469B (en) | 2015-01-06 | 2015-01-06 | Be applicable to the new method that seasonal ponding coal mine subsidence land is administered |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104499469A CN104499469A (en) | 2015-04-08 |
| CN104499469B true CN104499469B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510004597.1A Expired - Fee Related CN104499469B (en) | 2015-01-06 | 2015-01-06 | Be applicable to the new method that seasonal ponding coal mine subsidence land is administered |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106717218A (en) * | 2016-11-22 | 2017-05-31 | 紫荆浆体管道工程股份公司 | A kind of mining collapse area agricultural is reclaimed comprehensive processing method |
| CN113062263B (en) * | 2021-04-06 | 2022-06-03 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Immersed tube filling type coal mining subsidence land treatment method |
| CN113591179B (en) * | 2021-07-07 | 2024-01-26 | 国能黄骅港务有限责任公司 | Method and device for detecting runoff of rainwater in coal port and storage medium |
| CN114097466B (en) * | 2021-11-23 | 2022-09-27 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Coal mining subsidence area water ecological restoration system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1507230A1 (en) * | 1987-07-28 | 1989-09-15 | Ленинградский горный институт им.Г.В.Плеханова | Method of recultivation in opencast mining of deposits of mineral resources |
| CN102609782B (en) * | 2012-01-10 | 2016-04-13 | 中国矿业大学(北京) | Bian Caibian based on coal-mining subsidence simulation and second ploughing rate answers the method for optimizing on opportunity |
| CN103076437B (en) * | 2012-12-30 | 2014-10-01 | 中国矿业大学(北京) | Coal mining ground fissure moisture damage detection method taking space-time difference and rainfall impact into consideration |
| CN103039147B (en) * | 2013-01-06 | 2014-12-31 | 中国矿业大学(北京) | Reclamation method for sunk paddy field caused by mining in mountainous regions |
| CN103283335B (en) * | 2013-05-22 | 2015-05-06 | 中国矿业大学(北京) | Filling reclamation method for reclaiming coal mining subsidence lands by Yellow River sediment |
| CN103936163B (en) * | 2014-04-25 | 2015-06-24 | 中国矿业大学 | Method for water resource cascade adjustment control and water quality ecological purification in high groundwater level coal-mining subsidence area |
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Granted publication date: 20150826 Termination date: 20160106 |