CN1718946A - Underground submerged interception for preventing sea water from invasion and water collection method - Google Patents
Underground submerged interception for preventing sea water from invasion and water collection method Download PDFInfo
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- CN1718946A CN1718946A CN 200510046649 CN200510046649A CN1718946A CN 1718946 A CN1718946 A CN 1718946A CN 200510046649 CN200510046649 CN 200510046649 CN 200510046649 A CN200510046649 A CN 200510046649A CN 1718946 A CN1718946 A CN 1718946A
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Abstract
The present invention relates to an underground interception and water collection method for resisting sea-water encroachment. Said invention adopts multi-layer radial-opened and large-diameter water-collecting well technique, the filters are hierarchically distributed along the depth direction, the length of the filter can be extended to 5-10m or more longer in water-containing layer direction. The water-collecting well diameter is larger, its water-collecting capacity is high, ground water yield is large, and its water quality can not be easily contaminated, so that it has hetter water-collecting, mining and water quality protection effect.
Description
Technical field
The invention belongs to underground section latent and technology of water catchment field that stops seawater invasion.
Background technology
Existing groundwater reservoir and underground section latent engineering mainly are applicable to better area of aquifer distribution, as: alluvium, diluvial fan, alluvial flat etc., applicability is relatively poor in moisture relatively poor aquitard area, uses less; At coastal region, because special geology structure and geological environment, permeability relatively poor location in aquifer also has a lot, existing diving development technique is common collecting well, because hole diameter is less, and limited amount, the aquifer is not disclosed fully and is utilized, the utilization rate of mining of groundwater engineering is lower, the restriction of its well drilling technology and production technique in addition, and phreatic permeability and influence layer position all have been subjected to bigger restriction.
Summary of the invention
Purpose of the present invention just provides that a kind of to set up small-sized groundwater reservoir pattern reliable, and underground section of prevention seawater invasion with extensive applicability and using value dived and catchment method.
Technical solution of the present invention is, the present invention constructs in the more weak fresh water distributed area of the aquifer permeability in seawater invasion area, strand, builds near the catchwork below the mining of groundwater water level closely following section latent engineering, is made up of multi-level section latent well and heavy caliber collecting well.
Multi-level section latent well, be made up of every layer of 8 filter pipe that catchments that is 45 ° of distributions on level, except the circular apertures that is drilled to total porosity 18-25%, material forms loaded filter by rockfilling on the filter pipe that catchments, the circular apertures aperture of catchmenting on the filter pipe is 20mm, and the hole heart is apart from being 50mm * 50mm; The filter pipe that catchments can be established 2-5 layer or more according to aquifer thickness; The length 5-8m of the single filter pipe that catchments, what have can extend longer according to the aquifer distribution.The degree that the aquifer is disclosed relatively is higher, and the collecting well bore is bigger, and the ability of catchmenting is stronger, and amount of groundwater mining is bigger, and the filterability of filter pipe is stronger in addition, and water quality is difficult for polluting.
The heavy caliber collecting well directly links to each other with header and communicates, and each layer filter pipe that catchments should be 45 ° evenly separately in the plane, and vertically collecting well should be made filter shape, and 3-5 rice sediment tube should be left in the bottom, and becomes not have the real tubulose of hole.
The aquifer can be the stronger aquifer of permeability, also can be the relatively poor aquitard of permeability, as: rubble gravel cobble mixes soil, do not establish the level set water pipe in the location that does not have the aquifer to distribute, the filter pipe that catchments on the plane is asymmetric radial, and the length of the filter pipe that catchments is extended according to the aquifer or specific (special) requirements prolongs.
The invention has the beneficial effects as follows:
1. the extension of radial water collecting structure of multilayer and level set water pipe has the good underground effect of catchmenting, and catchments fully, collecting water from runoff is big, and strainability is good, water quality is good.
2. the area that both had been suitable for the aquifer good penetrability also is useful in the relatively poor area of aquifer permeability, builds groundwater reservoir in the coastal area and build small-sized groundwater reservoir to have special meaning, has enlarged the area of application and the range of application of groundwater reservoir.
3. special water collecting structure technology provided by the invention has been extended the catchment area of groundwater reservoir, has substantially enlarged the catchment area and the header density of groundwater reservoir, helps that groundwater resources replenish and the expansion of regulating power.
4. this class groundwater reservoir engineering, underground dam, repeatedly horizontal catchwork, collecting well, monitor wells etc. can adopt built-in fitting, and at ground construction, and do not hinder the construction and the construction of other engineering of ground, can save construction costs 1/3～2/3.
5. catchment and water intake engineering simple, be convenient to supportingly, be convenient to water treatment, operating cost is cheap, only is 1/3～1/2 of other form water supply water rate.
Description of drawings
Fig. 1 is the high-pressure slip-casting of the present invention profile that blocks water.
Fig. 2 is a plan view of the present invention.
Fig. 3 is a header cut-away view of the present invention.
Fig. 4 is a catchwork sectional drawing of the present invention.
Fig. 5 is pipeline groove and the filtration beds profile of catchmenting of the present invention.
Among the figure, the flood layer that 1. overflows, the dam 2. blocks water, 3. basement rock, 4. underground pump house and collecting well, 5. horizontal collection gallery, 6. desilting vertical shaft, 7. the underground dam plan view that forms of high-pressure slip-casting, 8. construction catch pit, 9. underground pump house, the flood level that 10. overflows, 11. cat ladders, 12. suction pump, 13. sedimentation basins, 14. is first, second and third filtration beds, 15. the level set water pipe, 16. pedestals, 17. filtration bedss.
The specific embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
The underground catchwork of willow bavin ditch has adopted this method in the Northern Cities in Dalian good harbour, has created very high economic benefit, the underground collecting system operational excellence after building up, and daily production is up to 800m
3
Construct in the more weak fresh water distributed area of the aquifer permeability in seawater invasion area, strand, build near the catchwork below the mining of groundwater water level closely following section latent engineering, form by multi-level section latent well and heavy caliber collecting well.
Multi-level section latent well, form by every layer of 8 filter pipe that catchments that on level, is 45 ° of distributions, as on the filtration steel pipe of the filter pipe that catchments except the circular apertures that is drilled to total porosity 22%, material forms loaded filter by rockfilling, the circular apertures aperture of catchmenting on the filter pipe is 20mm, and the hole heart is apart from being 50mm * 50mm; The filter pipe that catchments is established 3 layers; The length 6m of the single filter pipe that catchments.
The heavy caliber collecting well directly links to each other with header and communicates, and vertically collecting well should be made filter shape, and 3 meters sediments tube should be left in the bottom, are real tubulose.
Claims (2)
1. one kind stops underground section of seawater invasion to dive and catchment method, it is characterized in that, is made up of multi-level section latent well and heavy caliber collecting well; Multi-level section latent well is made up of the filter pipe that catchments, and the material that rockfills forms loaded filter; The filter pipe that catchments is the 2-5 layer; The length 5-8m of the single filter pipe that catchments; The heavy caliber collecting well links to each other with header and communicates, and vertically collecting well is a filter shape, and 3-5 rice sediment tube is left in the bottom.
2. a kind of underground section latent and catchment method that stops seawater invasion according to claim 1 is characterized in that, cuts latent well at many levels, is made up of every layer of 8 filter pipe that catchments that is 45 ° of distributions on level; The filter pipe that catchments is provided with the circular apertures that total porosity is 1 8-25%, and the aperture is 20mm, and heart distance in hole is 50mm * 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046649 CN1718946A (en) | 2005-06-09 | 2005-06-09 | Underground submerged interception for preventing sea water from invasion and water collection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046649 CN1718946A (en) | 2005-06-09 | 2005-06-09 | Underground submerged interception for preventing sea water from invasion and water collection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1718946A true CN1718946A (en) | 2006-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510046649 Pending CN1718946A (en) | 2005-06-09 | 2005-06-09 | Underground submerged interception for preventing sea water from invasion and water collection method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587451A (en) * | 2012-03-13 | 2012-07-18 | 中国海洋大学 | Selective permeable reactive barrier technique for controlling seawater invasion |
| CN103455667A (en) * | 2013-08-20 | 2013-12-18 | 天津大学 | Numerical simulation method for controlling confined aquifer seawater invasion through inflation process |
| CN104803431A (en) * | 2015-04-10 | 2015-07-29 | 天津大学 | Device for controlling seawater intrusion by natural energy |
| CN105696647A (en) * | 2016-03-31 | 2016-06-22 | 大连久鼎祥瑞特种工程技术研究院有限公司 | Underground reservoir technology preventing seawater intrusion |
| CN106351286A (en) * | 2016-10-17 | 2017-01-25 | 重庆大学 | Coral reef sand underground freshwater reserving and using method |
| CN107827273A (en) * | 2017-11-06 | 2018-03-23 | 中国电建集团北京勘测设计研究院有限公司 | A kind of governing system of underground water pollution and the administering method of underground water pollution |
-
2005
- 2005-06-09 CN CN 200510046649 patent/CN1718946A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587451A (en) * | 2012-03-13 | 2012-07-18 | 中国海洋大学 | Selective permeable reactive barrier technique for controlling seawater invasion |
| CN103455667A (en) * | 2013-08-20 | 2013-12-18 | 天津大学 | Numerical simulation method for controlling confined aquifer seawater invasion through inflation process |
| CN103455667B (en) * | 2013-08-20 | 2016-06-15 | 天津大学 | Aeration administers the method for numerical simulation of artesian aquifer seawater invasion |
| CN104803431A (en) * | 2015-04-10 | 2015-07-29 | 天津大学 | Device for controlling seawater intrusion by natural energy |
| CN104803431B (en) * | 2015-04-10 | 2016-07-20 | 天津大学 | Natural energy is utilized to control the device of seawater invasion |
| CN105696647A (en) * | 2016-03-31 | 2016-06-22 | 大连久鼎祥瑞特种工程技术研究院有限公司 | Underground reservoir technology preventing seawater intrusion |
| CN106351286A (en) * | 2016-10-17 | 2017-01-25 | 重庆大学 | Coral reef sand underground freshwater reserving and using method |
| CN107827273A (en) * | 2017-11-06 | 2018-03-23 | 中国电建集团北京勘测设计研究院有限公司 | A kind of governing system of underground water pollution and the administering method of underground water pollution |
| CN107827273B (en) * | 2017-11-06 | 2023-11-24 | 中国电建集团北京勘测设计研究院有限公司 | Groundwater pollution treatment system and groundwater pollution treatment method |
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