CN205444256U - Salt lake mineral salt crystallizing pond protective screen system - Google Patents
Salt lake mineral salt crystallizing pond protective screen system Download PDFInfo
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- CN205444256U CN205444256U CN201521090011.XU CN201521090011U CN205444256U CN 205444256 U CN205444256 U CN 205444256U CN 201521090011 U CN201521090011 U CN 201521090011U CN 205444256 U CN205444256 U CN 205444256U
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Abstract
The utility model discloses a salt lake mineral salt crystallizing pond protective screen system, the from the bottom up of this protective screen system include basal layer, lower barrier layer, leakage detection layer in proper order, go up barrier layer, protective cover. The barrier layer includes sodium bentonite pad, a high density polyethylene film layer, first long filament nonwoven geotechnique cloth layer from lower to upper in proper order down, the leakage detection layer includes metalling, second long filament nonwoven geotechnique cloth layer, the compound drainage scheme of geotechnique and seepage drainage guide pipe, and wherein this metalling, second long filament nonwoven geotechnique cloth layer, the compound drainage scheme of geotechnique are arranged by supreme down in proper order, and during this metalling was located to this seepage drainage guide pipe one end, the other end was located in the monitoring well, go up the barrier layer by lower supreme the 2nd high density polyethylene film layer and the third long filament nonwoven geotechnique cloth layer of including, the protective cover include concrete layer and, anticorrosion coating and fine sand overburden. The utility model discloses a salt lake mineral salt crystallizing pond protective screen system had both protected soil and groundwater environment, facilitated for the collection of mineral salt again.
Description
Technical field
This utility model relates to mining industry field, salt lake, specifically a kind of extremely frigid zones salt lake mineral salt crystallizing pond barrier system.
Background technology
At present, saline lake deposit recovery process often need to be built on the grounds such as silty clay soil, sand, salt deposit, Gobi desert the buildings such as collection halogen, defeated halogen and storage halogen, such as defeated halogen channel, spray dump leaching field, Ji Luchi, salt pan etc..Their effective antiseepage, not only for reducing filter loss, is increased economic efficiency and resource utilization, and is related to the problems such as stability and the environmental conservation of engineering.Can therefore, the antiseepage of salt lake exploitation engineering be particularly significant, even become whole project and implement, with or without the key of economic benefit.
The antiseepage of salt lake exploitation engineering should possess following characteristic:
1) antiseepage object is salt.On the one hand salt economic worth is high, and its seepage not only economic loss is big and can cause pollution and the destruction of surrounding, and therefore antiseepage requires high (permeability≤1.0 × 10-9m/s)；On the other hand salt has serious corrosivity, it is desirable to antiseepage material has strong corrosion resistance；Salinity is high, has stronger pollution to soil and groundwater.
2) the general climatic environment in salt lake engineering location is special, and as big in the temperature difference, ultraviolet radiation intensity is big, it is desirable to antiseepage material has good temperature performance (high temperature resistant, freeze proof and freeze thawing resistance) and ageing resistace.
3) in the engineerings such as dump leaching field, salt pan, engineering mechanical device to carry out shovel shipment operation on impervious barrier, and impervious barrier and protective layer thereof must have enough intensity and adaptive deformation ability.
4) salt lake exploitation engineering antiseepage area is big, and it is high that proportion in total investment of engineering is made an investment in antiseepage, it is therefore desirable to seepage control project cost is low and easy construction speed is fast, to reduce construction investment, shorten the construction period and improve economic benefit of engineering.
But current salt lake exploitation seepage control project often cannot all accomplish above some, cause filter loss, i.e. reduce economic benefit, again surrounding soil and subsoil water are polluted simultaneously.
Utility model content
In view of this, main purpose of the present utility model is to provide one both soil protections and groundwater environment, and the collection for mineral salt provides salt lake mineral salt crystallizing pond barrier system easily again.
For reaching above-mentioned purpose, this utility model provides a kind of salt lake mineral salt crystallizing pond barrier system, and this barrier system includes basal layer, lower impervious barrier, leak detection layer, upper impervious barrier, protective mulch the most successively.
Described lower impervious barrier includes sodium bentonite pad, the first density polyethylene film with high layer, first filament nonwoven geotechnique's layer of cloth the most successively；Described leak detection layer includes metalling, second filament nonwoven geotechnique's layer of cloth, soil engineering composite drainage network and seepage discharge guiding pipe, wherein this metalling, second filament nonwoven geotechnique's layer of cloth, soil engineering composite drainage network are arranged in order from the bottom to top, this seepage discharge guiding pipe one end is located in this metalling, and the other end is located in monitoring well；Described upper impervious barrier includes the second density polyethylene film with high layer and the 3rd filament nonwoven geotechnique's layer of cloth from the bottom to top；Described protective mulch include concrete layer and, corrosion-inhibiting coating and fine sand cover layer.
Described basal layer is clay compaction basis, and pond base pressure solidity is more than or equal to 93%, and slope compaction degree is more than or equal to 90%.
Described sodium bentonite pad specification is more than or equal to 4800g/m2, described sodium bentonite pad is auxiliary seepage proof layer and film lower protective layer.
First density polyethylene film with high layer thickness of described lower impervious barrier is more than or equal to 1.5mm, and the second density polyethylene film with high layer thickness of described upper impervious barrier is more than or equal to 2.0mm.
The specification of described first filament nonwoven geotechnique's layer of cloth, second filament nonwoven geotechnique's layer of cloth and the 3rd filament nonwoven geotechnique's layer of cloth is more than or equal to 600g/m2Described first filament nonwoven geotechnique's layer of cloth is the protective layer on the first density polyethylene film with high layer; described 3rd filament nonwoven geotechnique's layer of cloth is the protective layer on the second density polyethylene film with high layer, and described second filament nonwoven geotechnique's layer of cloth is the sealing coat of described leak detection layer.
Described soil engineering composite drainage network thickness is more than or equal to 6.0mm, and described soil engineering composite drainage network is the lead layer of described leak detection layer.
Described concrete layer is layed on the 3rd filament nonwoven geotechnique's layer of cloth on pool side slope, and described concrete layer uses C20 plain concrete, and thickness is more than or equal to 200mm.
Described corrosion-inhibiting coating is painted on described concrete layer, and described corrosion-inhibiting coating uses asphalt anticorrosion paint brushing, and thickness is more than or equal to 1.0mm；Described fine sand cover layer is layed on the 3rd filament nonwoven geotechnique's layer of cloth at the bottom of pond, and described fine sand overburden cover is more than or equal to 300mm.
Described seepage discharge guiding pipe uses high density polyethylene (HDPE) material, and pipe nominal diameter is more than or equal to 110mm.
Salt lake of the present utility model mineral salt crystallizing pond barrier system both soil protections and groundwater environment, the collection for mineral salt provides convenient again.
Accompanying drawing explanation
Fig. 1 is this utility model salt lake mineral salt crystallizing pond barrier system structural representation.
Detailed description of the invention
For ease of structure of the present utility model and the effect that reaches there being further understanding, describe in detail as follows in conjunction with the accompanying drawing preferred embodiment that develops simultaneously.
As it is shown in figure 1, salt lake of the present utility model mineral salt crystallizing pond barrier system is followed successively by basal layer, lower impervious barrier, leak detection layer, upper impervious barrier, protective mulch from top to bottom.Basal layer is clay compaction basis 1；Lower impervious barrier includes sodium bentonite pad the 2, first high density polyethylene (HDPE) (HDPE) film layer the 3, first filament nonwoven geotechnique's layer of cloth 4 the most successively, and wherein sodium bentonite pad 2 is between basal layer and the first density polyethylene film with high layer 3；Leak detection layer includes metalling the 5, second filament nonwoven geotechnique's layer of cloth 6, soil engineering composite drainage network 7, seepage discharge guiding pipe 13, wherein metalling the 5, second filament nonwoven geotechnique's layer of cloth 6, soil engineering composite drainage network 7 are arranged in order from the bottom to top, this seepage discharge guiding pipe 13 one end is located in metalling 5, the other end is located in monitoring well 14, for discharging the salt of the upper seepage of seepage-proof layer that metalling is collected；On this, impervious barrier includes the second high density polyethylene (HDPE) (HDPE) film layer the 8, the 3rd filament nonwoven geotechnique's layer of cloth 9, and wherein this second high density polyethylene (HDPE) (HDPE) film layer 8 is between soil engineering composite drainage network 7 and the 3rd filament nonwoven geotechnique's layer of cloth 9；Protective mulch includes concrete layer 10, corrosion-inhibiting coating 11, fine sand cover layer 12, and wherein this corrosion-inhibiting coating 11 is covered in above concrete layer 10.
In this utility model, clay compaction basis 1 uses clay compaction in layers, and layering paves, and pond base pressure solidity is not less than 93%, and side slope requires that compactness is not less than 90%, the design gradient not less than 2% simultaneously.
Lower impervious barrier use specification not less than 4800g/m2Sodium bentonite pad 2, this sodium bentonite pad 2 uses overlapping mode to lay, and lap width is preferably greater than 300mm, and sodium bentonite pad 2 has extremely strong water-swelling property, infiltration coefficient be less than 5 × 10-11M/s, can be as auxiliary seepage proof layer and film lower protective layer, it is ensured that the safety of barrier structure.First high density polyethylene (HDPE) (HDPE) film layer 3 is time impervious barrier, is laid on above sodium bentonite pad 2.First filament nonwoven geotechnique's layer of cloth 4 is laid on above the first high density polyethylene (HDPE) (HDPE) film layer 3, as film up-protective layer.First high density polyethylene (HDPE) (HDPE) film layer 3 required thickness of lower impervious barrier is not less than 1.5mm.
The metalling 5 of leak detection layer is layed on lower impervious barrier, re-lays second filament nonwoven geotechnique's layer of cloth 6, soil engineering composite drainage network 7 above, for collecting the salt of the possible seepage of impervious barrier, and with in seepage discharge guiding pipe 13 guide to monitoring well 14.Soil engineering composite drainage network 7 thickness is not less than 6.0mm, as the lead layer of leak detection layer.In this utility model, seepage discharge guiding pipe 13 requires to use high density polyethylene (HDPE) (HDPE) material, and pipe nominal diameter is not less than 110mm.
In upper impervious barrier, the second high density polyethylene (HDPE) (HDPE) film layer 8 is main impervious barrier, is laid on leak detection layer.3rd filament nonwoven geotechnique's layer of cloth 9 is laid on above the second high density polyethylene (HDPE) (HDPE) film layer 8, as film up-protective layer.Second high density polyethylene (HDPE) (HDPE) film layer 8 required thickness of upper impervious barrier is not less than 2.0mm.
First, second, third filament nonwoven geotechnique's layer of cloth specification in this utility model is not less than 600g/m2The protective layer that first filament nonwoven geotechnique's layer of cloth 4 is used as on the first high density polyethylene (HDPE) (HDPE) film layer 3; the protective layer that 3rd filament nonwoven geotechnique's layer of cloth 9 is used as on the second high density polyethylene (HDPE) (HDPE) film layer 8, second filament nonwoven geotechnique's layer of cloth 6 is used as the sealing coat of leak detection layer.
In protective mulch, concrete layer 10 is layed on the 3rd filament nonwoven geotechnique's layer of cloth 9 on pool side slope, and corrosion-inhibiting coating 11 is painted on concrete layer 10, is used for protecting concrete layer 10 not corroded by salt.Described concrete layer uses C20 plain concrete, it is desirable to thickness is not less than 200mm, and corrosion-inhibiting coating uses asphalt anticorrosion paint brushing, it is desirable to thickness is not less than 1.0mm.Fine sand cover layer 12 is layed on the 3rd filament nonwoven geotechnique's layer of cloth 9 at the bottom of pond, and as protective mulch during collection mineral salt, fine sand cover layer required thickness is not less than 300mm.
The above, preferred embodiment the most of the present utility model, it is not intended to limit protection domain of the present utility model.
Claims (9)
1. a salt lake mineral salt crystallizing pond barrier system, it is characterised in that this barrier system includes basal layer, lower impervious barrier, leak detection layer, upper impervious barrier, protective mulch the most successively；
Described lower impervious barrier includes sodium bentonite pad, the first density polyethylene film with high layer, first filament nonwoven geotechnique's layer of cloth the most successively；Described leak detection layer includes metalling, second filament nonwoven geotechnique's layer of cloth, soil engineering composite drainage network and seepage discharge guiding pipe, wherein this metalling, second filament nonwoven geotechnique's layer of cloth, soil engineering composite drainage network are arranged in order from the bottom to top, this seepage discharge guiding pipe one end is located in this metalling, and the other end is located in monitoring well；Described upper impervious barrier includes the second density polyethylene film with high layer and the 3rd filament nonwoven geotechnique's layer of cloth from the bottom to top；Described protective mulch include concrete layer and, corrosion-inhibiting coating and fine sand cover layer.
2. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that described basal layer is clay compaction basis, and pond base pressure solidity is more than or equal to 93%, and slope compaction degree is more than or equal to 90%.
3. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that described sodium bentonite pad specification is more than or equal to 4800g/m2, described sodium bentonite pad is auxiliary seepage proof layer and film lower protective layer.
4. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that the first density polyethylene film with high layer thickness of described lower impervious barrier is more than or equal to 1.5mm, the second density polyethylene film with high layer thickness of described upper impervious barrier is more than or equal to 2.0mm.
5. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that the specification of described first filament nonwoven geotechnique's layer of cloth, second filament nonwoven geotechnique's layer of cloth and the 3rd filament nonwoven geotechnique's layer of cloth is more than or equal to 600g/m2Described first filament nonwoven geotechnique's layer of cloth is the protective layer on the first density polyethylene film with high layer; described 3rd filament nonwoven geotechnique's layer of cloth is the protective layer on the second density polyethylene film with high layer, and described second filament nonwoven geotechnique's layer of cloth is the sealing coat of described leak detection layer.
6. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that described soil engineering composite drainage network thickness is more than or equal to 6.0mm, and described soil engineering composite drainage network is the lead layer of described leak detection layer.
7. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that described concrete layer is layed on the 3rd filament nonwoven geotechnique's layer of cloth on pool side slope, described concrete layer uses C20 plain concrete, and thickness is more than or equal to 200mm.
8. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that described corrosion-inhibiting coating is painted on described concrete layer, described corrosion-inhibiting coating uses asphalt anticorrosion paint brushing, and thickness is more than or equal to 1.0mm；Described fine sand cover layer is layed on the 3rd filament nonwoven geotechnique's layer of cloth at the bottom of pond, and described fine sand overburden cover is more than or equal to 300mm.
9. salt lake as claimed in claim 1 mineral salt crystallizing pond barrier system, it is characterised in that described seepage discharge guiding pipe uses high density polyethylene (HDPE) material, pipe nominal diameter is more than or equal to 110mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090011.XU CN205444256U (en) | 2015-12-24 | 2015-12-24 | Salt lake mineral salt crystallizing pond protective screen system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521090011.XU CN205444256U (en) | 2015-12-24 | 2015-12-24 | Salt lake mineral salt crystallizing pond protective screen system |
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| CN205444256U true CN205444256U (en) | 2016-08-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457363A (en) * | 2018-02-02 | 2018-08-28 | 北京锄禾环保技术有限公司 | A kind of Collapsible Loess District agricultural water-storing device structure |
| CN111980072A (en) * | 2020-09-08 | 2020-11-24 | 广州市水电设备安装有限公司 | Epidemic prevention emergency laboratory anti-pollution construction method |
| CN113430400A (en) * | 2021-06-25 | 2021-09-24 | 南昌大学 | Rare earth stack structure and growth type heap leaching method |
| CN114232819A (en) * | 2021-11-18 | 2022-03-25 | 中国核电工程有限公司 | Composite anti-seepage structure containing partition wall pool-shaped water storage structure and construction method |
-
2015
- 2015-12-24 CN CN201521090011.XU patent/CN205444256U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457363A (en) * | 2018-02-02 | 2018-08-28 | 北京锄禾环保技术有限公司 | A kind of Collapsible Loess District agricultural water-storing device structure |
| CN111980072A (en) * | 2020-09-08 | 2020-11-24 | 广州市水电设备安装有限公司 | Epidemic prevention emergency laboratory anti-pollution construction method |
| CN113430400A (en) * | 2021-06-25 | 2021-09-24 | 南昌大学 | Rare earth stack structure and growth type heap leaching method |
| CN114232819A (en) * | 2021-11-18 | 2022-03-25 | 中国核电工程有限公司 | Composite anti-seepage structure containing partition wall pool-shaped water storage structure and construction method |
| CN114232819B (en) * | 2021-11-18 | 2023-10-20 | 中国核电工程有限公司 | Composite seepage-proofing structure containing partition wall pool-shaped water storage structure and construction method |
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