CN205314137U - A evaporation pond prevention of seepage protective screen system for coal industry strong brine - Google Patents
A evaporation pond prevention of seepage protective screen system for coal industry strong brine Download PDFInfo
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- CN205314137U CN205314137U CN201521089938.1U CN201521089938U CN205314137U CN 205314137 U CN205314137 U CN 205314137U CN 201521089938 U CN201521089938 U CN 201521089938U CN 205314137 U CN205314137 U CN 205314137U
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Abstract
The utility model discloses an evaporation pond prevention of seepage protective screen system for coal industry strong brine, its from the bottom up 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, seepage drainage guide pipe is laid in this metalling, 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 includes the fine sand overburden. The utility model discloses a prevention of seepage protective screen system has enough intensity and adaptive deformation ability, can protect soil and groundwater environment, facilitates for the collection of mineral salt again.
Description
Technical field
The relevant a kind of antiseepage barrier system of this utility model, particularly relates to a kind of evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine.
Background technology
Evaporation pond processes Coal Chemical Industry strong brine and has the advantages such as cost of disposal is low, operation maintenance is simple, anti-shock loading is good, and therefore, evaporation pond technology is one of Coal Chemical Industry strong brine process field most widely used " zero-emission " technology. The Coal Chemical Industry strong brine complicated that evaporation pond is received, comprises multiple poisonous and hazardous material, and according to " National Hazard refuse register ", strong brine belongs to hazardous waste. The general climatic environment in evaporation pond location is special, as the temperature difference is big, 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. In crystal salt collection process, engineering mechanical device needs to carry out shovel shipment operation on impervious barrier, and impervious barrier and protective layer thereof must have enough intensity and adaptive deformation ability. But current evaporation pond impervious barrier often cannot all accomplish above some, cause filter loss, namely 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 in that to provide a kind of evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine with sufficient intensity and adaptive deformation ability.
For reaching above-mentioned purpose, this utility model provides a kind of evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine, and it includes basal layer, lower impervious barrier, leak detection layer, upper impervious barrier, protective mulch from top to bottom 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 from lower to upper 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, and described seepage discharge guiding pipe is layed in this metalling; 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 includes fine sand cover layer.
Described basal layer is clay compaction basal layer, and compactness is be more than or equal to 93%.
The specification of described sodium bentonite pad is be more than or equal to 4800g/m2, this sodium bentonite pad is auxiliary seepage proof layer, doubles as the film lower protective layer of described first density polyethylene film with high layer simultaneously.
Described first density polyethylene film with high layer is time impervious barrier, and its thickness is be more than or equal to 1.5mm, and described second density polyethylene film with high layer is main impervious barrier, and its thickness is be 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 be more than or equal to 600g/m2, described first filament nonwoven geotechnique's layer of cloth is the film up-protective layer of the first density polyethylene film with high layer, and described 3rd filament nonwoven geotechnique's layer of cloth is the film up-protective layer of the second density polyethylene film with high layer.
Described seepage discharge guiding pipe nominal outside diameter is be more than or equal to 125mm, and described seepage discharge guiding pipe adopts high density polyethylene (HDPE) tube having holes.
Described metalling is layed in seepage guide ditch, and ballast grain sizes is between 20-60mm.
The thickness of described soil engineering composite drainage network is be more than or equal to 5.0mm, and described soil engineering composite drainage network is the lead layer of leak detection layer.
Evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine of the present utility model, existing good temperature performance and ageing resistace, have again sufficient intensity and adaptive deformation ability, can soil protection and groundwater environment, again for mineral salt collection provide facility.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation for the evaporation pond antiseepage barrier system of Coal Chemical Industry strong brine.
Detailed description of the invention
For ease of structure of the present utility model and the effect that reaches are had further understanding, describe in detail as follows in conjunction with accompanying drawing and preferred embodiment.
Shown in Fig. 1, the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine of the present utility model is followed successively by basal layer, lower impervious barrier, leak detection layer, upper impervious barrier, protective mulch from top to bottom. This basal layer is clay compaction basal layer 1; This lower impervious barrier is included sodium bentonite pad the 20, first density polyethylene film with high layer the 21, first filament nonwoven geotechnique's layer of cloth 22 on the net successively by lower, and wherein sodium bentonite pad 20 is between basal layer and the first density polyethylene film with high layer 21; This leak detection layer includes metalling the 30, second filament nonwoven geotechnique's layer of cloth 31, soil engineering composite drainage network 32 and seepage discharge guiding pipe 33, wherein metalling the 30, second filament nonwoven geotechnique's layer of cloth 31, soil engineering composite drainage network 32 are arranged in order from the bottom to top, this seepage discharge guiding pipe 33 one end is located in metalling 30, the other end is located in monitoring well, for discharging the strong brine of the upper seepage of seepage-proof layer that metalling 30 is collected; On this, impervious barrier includes second density polyethylene film with high layer the 40, the 3rd filament nonwoven geotechnique's layer of cloth 41, and wherein this second density polyethylene film with high layer 40 is between soil engineering composite drainage network 32 and the 3rd filament nonwoven geotechnique's layer of cloth 41; This protective mulch includes fine sand cover layer 5, and this fine sand cover layer 5 is positioned on the 3rd filament nonwoven geotechnique's layer of cloth 41.
Basal layer in this utility model adopts clay compacting, requiring that compactness is not less than 93%, being not less than the gradient of 2% to the design of seepage discharge guiding pipe 33 place in place, when there is seepage simultaneously, the strong brine guide being beneficial to seepage enters leak detection layer, finds leakage scenarios in time.
Sodium bentonite pad 20 in lower impervious barrier, adopts overlapping mode to be layed in the top of clay compaction basal layer 1, and lap width is preferably greater than 300mm. Sodium bentonite pad 20 as auxiliary seepage proof layer, can double as film lower protective layer simultaneously. The specification of sodium bentonite pad 20 is not less than 4800g/m2, there is extremely strong water-swelling property, its infiltration coefficient is less than 5 × 10-11M/s. First density polyethylene film with high layer 21 thickness is not less than 1.5mm, as secondary impervious barrier, can be layed in the top of sodium bentonite pad 20. The specification of first filament nonwoven geotechnique's layer of cloth 22 is not less than 600g/m2, it is layed in the top of the first density polyethylene film with high layer 21, can as film up-protective layer.
Seepage discharge guiding pipe 33 in leak detection layer of the present utility model is layed in seepage guide ditch, and nominal outside diameter is not less than 125mm, and seepage discharge guiding pipe 33 requires to adopt high density polyethylene (HDPE) tube having holes. Metalling 30 is layed in seepage guide ditch, it is desirable to particle diameter is between 20-60mm. Second filament nonwoven geotechnique's layer of cloth 31 is layed in above metalling 30, and second filament nonwoven geotechnique's layer of cloth 31 specification is not less than 600g/m2. Soil engineering composite drainage network 32 is layed in above second filament nonwoven geotechnique's layer of cloth 31, and the thickness of soil engineering composite drainage network 32 is not less than 5.0mm, and soil engineering composite drainage network 32 is the lead layer of leak detection layer.
In upper impervious barrier in this utility model, the second density polyethylene film with high layer 40 thickness is not less than 2.0mm, as main impervious barrier, is layed in above soil engineering composite drainage network 32. The specification of the 3rd filament nonwoven geotechnique's layer of cloth 41 is not less than 600g/m2, it is layed in the top of second density polyethylene film with high etc. 40, can as film up-protective layer.
Fine sand cover layer 5 in this utility model is layed on main impervious barrier at the bottom of pond, protective mulch during as collection mineral salt.
These are only the preferred embodiment cited by this utility model; and be not used to limit protection domain of the present utility model; those of ordinary skill in art uses the equivalence that this utility model is made to modify or change, all with belonging to scope of patent protection of the present utility model.
Claims (8)
1. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine, it is characterised in that it includes basal layer, lower impervious barrier, leak detection layer, upper impervious barrier, protective mulch from top to bottom 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 from lower to upper 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, and described seepage discharge guiding pipe is layed in this metalling; 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 includes fine sand cover layer.
2. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, it is characterised in that described basal layer is clay compaction basal layer, and compactness is be more than or equal to 93%.
3. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, it is characterised in that the specification of described sodium bentonite pad is be more than or equal to 4800g/m2, this sodium bentonite pad is auxiliary seepage proof layer, doubles as the film lower protective layer of described first density polyethylene film with high layer simultaneously.
4. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, it is characterized in that, described first density polyethylene film with high layer is time impervious barrier, and its thickness is be more than or equal to 1.5mm, described second density polyethylene film with high layer is main impervious barrier, and its thickness is be more than or equal to 2.0mm.
5. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, 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 be more than or equal to 600g/m2, described first filament nonwoven geotechnique's layer of cloth is the film up-protective layer of the first density polyethylene film with high layer, and described 3rd filament nonwoven geotechnique's layer of cloth is the film up-protective layer of the second density polyethylene film with high layer.
6. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, it is characterised in that described seepage discharge guiding pipe nominal outside diameter is be more than or equal to 125mm, and described seepage discharge guiding pipe adopts high density polyethylene (HDPE) tube having holes.
7. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, it is characterised in that described metalling is layed in seepage guide ditch, and ballast grain sizes is between 20-60mm.
8. the evaporation pond antiseepage barrier system for Coal Chemical Industry strong brine as claimed in claim 1, it is characterised in that the thickness of described soil engineering composite drainage network is be more than or equal to 5.0mm, and described soil engineering composite drainage network is the lead layer of leak detection layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089938.1U CN205314137U (en) | 2015-12-24 | 2015-12-24 | A evaporation pond prevention of seepage protective screen system for coal industry strong brine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521089938.1U CN205314137U (en) | 2015-12-24 | 2015-12-24 | A evaporation pond prevention of seepage protective screen system for coal industry strong brine |
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| CN205314137U true CN205314137U (en) | 2016-06-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755595A (en) * | 2018-06-27 | 2018-11-06 | 红河哈尼族彝族自治州水利水电工程地质勘察咨询规划研究院 | A kind of reservoir basin anti-seepage geomembrane leakage apparatus for examination and repair and its repair method |
| CN109024707A (en) * | 2018-06-26 | 2018-12-18 | 中冶集团武汉勘察研究院有限公司 | Pressure-bearing anti-seepage artificial field structure and construction method and application thereof |
-
2015
- 2015-12-24 CN CN201521089938.1U patent/CN205314137U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024707A (en) * | 2018-06-26 | 2018-12-18 | 中冶集团武汉勘察研究院有限公司 | Pressure-bearing anti-seepage artificial field structure and construction method and application thereof |
| CN108755595A (en) * | 2018-06-27 | 2018-11-06 | 红河哈尼族彝族自治州水利水电工程地质勘察咨询规划研究院 | A kind of reservoir basin anti-seepage geomembrane leakage apparatus for examination and repair and its repair method |
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