CN102817379A - Upper protective layer structure of impervious barrier structure of municipal solid waste landfill - Google Patents
Upper protective layer structure of impervious barrier structure of municipal solid waste landfill Download PDFInfo
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- CN102817379A CN102817379A CN2012103160412A CN201210316041A CN102817379A CN 102817379 A CN102817379 A CN 102817379A CN 2012103160412 A CN2012103160412 A CN 2012103160412A CN 201210316041 A CN201210316041 A CN 201210316041A CN 102817379 A CN102817379 A CN 102817379A
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Abstract
An upper protective layer structure of an impervious barrier structure of a municipal solid waste landfill is a protective layer structure for projecting an uppermost geotextile layer and geomembrane of the impervious barrier structure at the no-landfill-waste position during design of the upper leachate guide layer of the impervious barrier structure for a pebble bed landfill. The upper protective layer structure of the impervious barrier structure of the municipal solid waste landfill comprises a reservoir side wall slope. An impervious barrier lower structure, an impervious HDPE (high-density polyethylene) film and geotextile are sequentially arranged on the surface of the reservoir side wall slope from top to bottom. A wheat straw mud layer or rice straw mud layer is arranged on the geotextile. Geogrid is arranged in the middle of the wheat straw mud layer or rice straw mud layer in the area with gradient larger than 1:1. The wheat straw mud or rice straw mud firmly and durably protects the upper geotextile and the geomembrane of the impervious barrier structure. The upper protective layer structure has the advantages that structure is simple, construction is safe and convenient, materials are taken locally, quality is reliable, and protection of the geotextile and the geomembrane on the structure surface is evidently effective. Ageing and cracking of the geotextile and the geomembrane on the surface of the impervious barrier structure due to long-term rain and insolation are prevented, and impermeability of the impervious barrier structure is ensured.
Description
Technical field
The invention belongs to the domestic rubbish disposal technical field, be specifically related to a kind of household refuse landfill sites impervious barrier structure upper protective layer structure.
Background technology
The effect of household refuse landfill sites impervious barrier structure be through impervious barrier with the garbage loading embeading thing and on every side the stratum isolate fully, form the independent and environment of sealing of refuse landfill, and then stop percolate to permeate the ground underground water around the landfill yard is polluted.The stable, lasting of refuse landfill impervious barrier structure effectively is the assurance that realizes its function, and the protection that the impervious barrier structure is laid after accomplishing is important project measure in the household refuse landfill sites running.
In landfill site seepage prevention layer structure design; Existing individual layer leakage preventing structure also has double-deck leakage preventing structure; Yet no matter take which kind of impervious barrier structural shape; As long as impervious barrier structure top percolate water conservancy diversion layer is designed to boulder bed; Then landfill yard reservoir area side slope owing to the reason that has the gradient cause the boulder bed structure can not be in work progress once-paving accomplish, but in the landfill yard running along with the increase of garbage loading embeading height is increased until end gradually, the superiors' geotextiles and the geomembrane that so just cause the bottom impervious barrier structure that is close to percolate water conservancy diversion layer for a long time by wind, the phenomenon that drenches with rain, be exposed to the sun.
According to the regulation of household refuse landfill sites respective design standard, standard, should in particular cases should not be lower than 8 years the reasonable service life of landfill yard more than 10 years.In the process of after the household refuse landfill sites construction is accomplished, moving; As previously mentioned landfill yard top household garbage not landfill to impervious barrier structure the superiors' geotextiles and the geomembrane of height will wind under the situation of exposing, drench with rain, Exposure to Sunlight reaches several years; Even the time of more than ten years; The geotextiles on the antiseepage film in the impervious barrier structure, special impervious barrier structure top layer is drenching with rain, can produce aging even fracture phenomena under the Exposure to Sunlight situation for many years; Have a strong impact on the barrier performance of impervious barrier structure; Cause the antiseepage function of impervious barrier structure to reduce or disappear, thus in the household refuse landfill sites running not the protection of landfill waste position impervious barrier be vital technology in the landfill yard management.The present invention just is being based on above former thereby proposition.
Summary of the invention
The technical problem that the present invention will solve be to provide a kind of technology reliable, gather materials on the spot, the structure of the household refuse landfill sites impervious barrier structure upper protective layer of economical and practical, easy construction.The present invention can guarantee to be designed in the boulder bed landfill yard running not by impervious barrier structure top percolate water conservancy diversion layer, and landfill waste position impervious barrier structure the superiors geotextiles and geomembrane are effectively protected.
It is following that the present invention solves the problems of the technologies described above the technical scheme of being taked: a kind of household refuse landfill sites impervious barrier structure upper protective layer structure; Comprise reservoir area sidewall side slope; Be provided with impervious barrier substructure, antiseepage high density polyethylene film and geotextiles above the sidewall side slope of reservoir area from bottom to top successively, it is characterized in that: be provided with wheat straw mud layer or straw mud layer above the geotextiles.
Wheat straw mud layer or straw mud layer are as the topping of prior art the superiors geotextiles and geomembrane, and the thickness of wheat straw mud layer or straw mud layer is 3～5cm, and the volume ratio of wheat straw or straw and clay or silt is 3:1, and the sheared length of wheat straw or straw is not more than 5cm.
The present invention is used for impervious barrier structure top percolate water conservancy diversion layer to be designed to the not protective layer structure of landfill waste position impervious barrier structure the superiors geotextiles and geomembrane of boulder bed landfill yard running.Be applicable to the less zone that is the gradient less than 1:1 of reservoir area sidewall grade of side slope.
In the middle of wheat straw mud layer or straw mud layer, be provided with GSZ for reservoir area sidewall grade of side slope is big like the zone of the gradient, adopt grid rib spacing to be advisable with 15～20cm greater than 1:1.Anchoring employing and the impervious barrier same anchorage style of grid on side slope; Grid thickness is confirmed according to calculation of parameter such as grade of side slopes.In work progress, should keep GSZ to be positioned at the middle part of wheat straw mud layer or cat and clay layer thickness.
The present invention is through grade of side slope is employed in covering wheat straw mud layer or straw mud layer above the geotextiles than the zonule in the reservoir area; The big zone of grade of side slope is employed in covering wheat straw mud layer or straw mud layer above the geotextiles in the reservoir area; And in the middle of wheat straw mud layer or straw mud layer, add worker's grid; GSZ effectively connects, reinforces wheat straw mud or cat and clay; Make wheat straw mud or cat and clay on impervious barrier structure upper strata geotextiles and geomembrane, form firm, durable protection, solved impervious barrier structure top percolate water conservancy diversion layer and be designed in the boulder bed landfill yard running the not engineering technology problem of landfill waste position impervious barrier structure the superiors geotextiles and geomembrane protection.Have that structural shape is simple, construction safety makes things convenient for, gather materials on the spot, reliable in quality and to the geotextiles and the geomembrane protection obvious results advantage on structure top layer; Geotextiles and the geomembrane of stopping impervious barrier structure top layer guaranteed the barrier performance of impervious barrier structure drenching with rain, producing aging fracture phenomena under the situation that Exposure to Sunlight is lasting.
Description of drawings
Fig. 1 is the impervious barrier superstructure sketch map during landfill waste not in the existing landfill yard running,
Fig. 2 is a structural representation of the present invention,
Fig. 3 is an another embodiment of the invention,
Fig. 4 is the structural representation when covering packed cobble landfill waste above Fig. 3,
Fig. 5 is the perspective view of Fig. 4.
Among the figure: 1-reservoir area sidewall side slope, 2-impervious barrier substructure, 3-antiseepage high density polyethylene film, abbreviation geomembrane, 4-geotextiles, 5-wheat straw mud layer, or straw mud layer, 6-GSZ, the packed boulder bed of 7-geotextiles.
The specific embodiment
The structure of this household refuse landfill sites impervious barrier structure upper protective layer; Be the protective layer structure of landfill waste position impervious barrier structure the superiors geotextiles and geomembrane protection not in the boulder bed landfill yard running; It is less mainly to be used in reservoir area sidewall grade of side slope; Be the zone of the gradient less than 1:1, the wheat straw mud that is used to protect geotextiles 4 and geomembrane 3 is close on protected geotextiles and the geomembrane through self viscosity.
The thickness of wheat straw mud layer 5 is 3～5cm; Wheat straw mud layer 5 by wheat straw and clay Jia Shui with become mud after cover above the geotextiles 4, the sheared length of wheat straw is not more than 5cm, wheat straw and clay are mixed into mud according to volume ratio 3:1.
Be provided with straw mud layer 5 above the geotextiles 4 of embodiment 2 present embodiments, straw mud layer 5 by straw and silt Jia Shui with become mud after cover above the geotextiles 4, the sheared length of straw is not more than 5cm, wheat straw and clay are mixed into mud according to volume ratio 3:1.All the other are identical with embodiment 1, are mainly used in the zone of reservoir area sidewall grade of side slope less than 1:1.The cat and clay that is used to protect geotextiles 4 and geomembrane 3 is close on protected geotextiles 4 and the geomembrane 3 through self viscosity.
The thickness of wheat straw mud layer 5 is 3～5cm; Wheat straw mud layer 5 by wheat straw and silt Jia Shui with become mud after cover above the geotextiles 4, the sheared length of wheat straw is not more than 5cm, wheat straw and clay are mixed into mud according to volume ratio 3:1.
Fig. 4 and shown in Figure 5 be in the boulder bed landfill yard running along with the increase of garbage loading embeading height is increased gradually, with the packed boulder bed 7 of geotextiles cover wheat straw mud layer 55 above, promptly wheat straw mud layer 5 above be provided with the packed boulder bed 7 of geotextiles.
The packed boulder bed 7 of geotextiles can successively be increased with the increase of garbage loading embeading height in the refuse landfill running; Construction stage, only the bottom of the sidewall side slope 1 about 3.0m of laying was high in the reservoir area.
Be provided with straw mud layer 5 above the geotextiles 4 of embodiment 4 present embodiments, be provided with GSZ 6 in the middle of the straw mud layer 5.The thickness of straw mud layer 5 is 3～5cm; Straw mud layer 5 by straw and clay Jia Shui with become mud after cover above the geotextiles 4, the sheared length of straw is not more than 5cm, wheat straw and clay are mixed into mud according to volume ratio 3:1.All the other are identical with embodiment 3.
The impervious barrier superstructure during landfill waste is not as shown in Figure 1 in the prior art landfill yard running, is provided with impervious barrier substructure 2, antiseepage high density polyethylene film 3 and geotextiles 4 above the reservoir area sidewall side slope 1 from bottom to top successively.Construction stage reservoir area sidewall side slope 1 bottom, the geotextiles 4 top high packed boulder beds 7 of geotextiles of about 3.0m of laying are successively increased the packed boulder bed 7 of geotextiles with the increase of garbage loading embeading height in the refuse landfill running.
Claims (7)
1. household refuse landfill sites impervious barrier structure upper protective layer structure; Comprise reservoir area sidewall side slope; Be provided with impervious barrier substructure, antiseepage high density polyethylene film and geotextiles above the sidewall side slope of reservoir area from bottom to top successively, it is characterized in that: be provided with wheat straw mud layer (5) or straw mud layer (5) above the geotextiles.
2. a kind of household refuse landfill sites impervious barrier structure upper protective layer structure as claimed in claim 1 is characterized in that: be provided with GSZ (6) in the middle of wheat straw mud layer (5) or the straw mud layer (5).
3. a kind of household refuse landfill sites impervious barrier structure upper protective layer structure as claimed in claim 2, it is characterized in that: the rib spacing of GSZ (6) is 15～20cm.
4. a kind of household refuse landfill sites impervious barrier structure upper protective layer structure as claimed in claim 1, it is characterized in that: the thickness of wheat straw mud layer (5) or straw mud layer (5) is 3～5cm.
5. like any described a kind of household refuse landfill sites impervious barrier structure upper protective layer structure of claim 1 to 4; It is characterized in that: wheat straw mud layer (5) or straw mud layer (5) by wheat straw or straw and clay or silt Jia Shui with become mud after cover above the geotextiles (4), the volume ratio of wheat straw or straw and clay or silt is 3:1.
6. a kind of household refuse landfill sites impervious barrier structure upper protective layer structure as claimed in claim 5, it is characterized in that: the sheared length of wheat straw or straw is not more than 5cm.
7. a kind of household refuse landfill sites impervious barrier structure upper protective layer structure as claimed in claim 6 is characterized in that: wheat straw mud layer (5) or establish the packed boulder bed of geotextiles (7) above the straw mud layer (5).
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| CN2012103160412A CN102817379A (en) | 2012-08-31 | 2012-08-31 | Upper protective layer structure of impervious barrier structure of municipal solid waste landfill |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK201500160A1 (en) * | 2015-03-13 | 2016-10-03 | Sbr Innovation V/S B Rasmussen | biological sewage treatment plants |
| CN106180114A (en) * | 2016-07-11 | 2016-12-07 | 中国环境科学研究院 | A kind of quasi-aerobic landfill end cover layer |
| CN107838168A (en) * | 2017-12-12 | 2018-03-27 | 江苏和合环保集团有限公司 | A kind of refuse landfill of extendible capacity |
| CN108064484A (en) * | 2016-11-08 | 2018-05-25 | 张聚兵 | It is a kind of using the organic drawing rubbish in city come the technology of Desert Control and application |
| CN111282954A (en) * | 2020-02-12 | 2020-06-16 | 四川省生态环境科学研究院 | Sodium sulfide waste residue soil pollution risk management and control system |
| CN113605547A (en) * | 2021-08-17 | 2021-11-05 | 中建安装集团有限公司 | Heat insulation board for yeast making room by brewing wine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK201500160A1 (en) * | 2015-03-13 | 2016-10-03 | Sbr Innovation V/S B Rasmussen | biological sewage treatment plants |
| CN106180114A (en) * | 2016-07-11 | 2016-12-07 | 中国环境科学研究院 | A kind of quasi-aerobic landfill end cover layer |
| CN108064484A (en) * | 2016-11-08 | 2018-05-25 | 张聚兵 | It is a kind of using the organic drawing rubbish in city come the technology of Desert Control and application |
| CN107838168A (en) * | 2017-12-12 | 2018-03-27 | 江苏和合环保集团有限公司 | A kind of refuse landfill of extendible capacity |
| CN107838168B (en) * | 2017-12-12 | 2023-09-19 | 江苏和合环保集团有限公司 | But landfill of dilatation |
| CN111282954A (en) * | 2020-02-12 | 2020-06-16 | 四川省生态环境科学研究院 | Sodium sulfide waste residue soil pollution risk management and control system |
| CN113605547A (en) * | 2021-08-17 | 2021-11-05 | 中建安装集团有限公司 | Heat insulation board for yeast making room by brewing wine |
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Application publication date: 20121212 |