CN107624292A - The construction method and refuse dump Reclaimed Soil of the new structure soil body in refuse dump - Google Patents
The construction method and refuse dump Reclaimed Soil of the new structure soil body in refuse dump Download PDFInfo
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- CN107624292A CN107624292A CN201610566168.8A CN201610566168A CN107624292A CN 107624292 A CN107624292 A CN 107624292A CN 201610566168 A CN201610566168 A CN 201610566168A CN 107624292 A CN107624292 A CN 107624292A
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Abstract
The present invention is the construction method and refuse dump Reclaimed Soil on a kind of new structure soil body in refuse dump, is comprised the following steps：1) feldspathic sandstone of crushing is inserted in refuse dump；2) the described feldspathic sandstone of compacting, obtains feldspathic sandstone impervious barrier；3) overlying soil on described feldspathic sandstone layer.The method of the present invention makes refuse dump can be good at keeping soil moisture, considerably reduces soil erosion, promotes ecological recovery；This method effectively solve current Jin, Shaanxi and Inner Mongolia mining area refuse dump because of institute overburden layer thickness deficiency and caused by liquid manure leakage problems, the shortcomings of compensate for loess and sandy soil retain water and nutrients difference；The method of the present invention is gathered materials on the spot, and is turned waste into wealth, easy for construction, cost is low, suitable for large area applications.
Description
Technical field
The present invention relates to a kind of refuse dump Reclaimed Soil, the present invention relates to a kind of construction method of the new structure soil body in refuse dump and
Refuse dump Reclaimed Soil.
Background technology
(dump, wastedump, wastepile) is also known as waste-rock yard for refuse dump, refers to that mining dumps thing and concentrates discharge
Place.It is the important Coal Energy Source base in China that Jin, Shaanxi and Inner Mongolia, which border on area, and coal resources are had an opencast mining of to ground surface soil on a large scale
Ground and the ecosystem cause extremely serious destruction, and form the refuse dump for being largely badly in need of reclaiming, and are answered according to State owned land
Technical standard is cultivated, Reclaimed Land soil thickness is no less than 50cm.Due to this area and severe water and soil erosion area of China, strong
Soil erosion causes most of region soil layer relatively thin, or even loss totally causes arsenic sandstone exposure, causes refuse dump earthing process
In it is nervous using soil resource, and then cause a large amount of refuse dump soil thickness to be less than 50cm.Due to the main soil for earthing
Earth type is the typical loess in the ground and aeolian sandy soil, and its quality is thicker, and retain water and nutrients ability is poor, and water permeable ability is strong, simultaneously should
Area is semiarid region, and rain time distribution is extremely uneven (being mainly distributed on 7-9 months), and the rainfall more in the form of heavy rain；With
Upper feature is reclaimed to the refuse dump of the coal mining in Jin, Shaanxi and Inner Mongolia area and brings the problem of very big.
Prior art mainly should to refuse dump covering to the Reclamation of the refuse dump of the coal mining in Jin, Shaanxi and Inner Mongolia area
The loess or sandy soil in area, the lower floor of soil layer are the solid waste such as the gangue formed in recovery process, have larger hole
Gap, it is difficult to be utilized and be lost in again after water and nutrient is from upper strata soil body seepage.
The content of the invention
It is a primary object of the present invention to, there is provided a kind of construction method of new new structure soil body in refuse dump and refuse dump are reclaimed
Soil, technical problem to be solved is the refuse dump after improvement is kept its soil moisture, thus more suitable for practicality.
The object of the invention to solve the technical problems is realized using following technical scheme.Itd is proposed according to the present invention
A kind of new structure soil body in refuse dump construction method, it comprises the following steps：
1) feldspathic sandstone of crushing is inserted in refuse dump；
2) the described feldspathic sandstone of compacting, obtains feldspathic sandstone impervious barrier；
3) overlying soil on described feldspathic sandstone layer.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Preferably, the construction method of the new structure soil body in foregoing refuse dump, wherein it is described the step of 1) in crush after arsenic sand
The particle diameter of rock is less than 20mm.
Preferably, using road roller compacting arsenic sand in the construction method of the new structure soil body in foregoing refuse dump, wherein step 2)
Rock.
Preferably, the construction method of the new structure soil body in foregoing refuse dump, wherein it is described the step of 2) in feldspathic sandstone layer thickness
Spend and be more than 1.80g/cm for 8-20cm, unit weight3。
Preferably, the construction method of the new structure soil body in foregoing refuse dump, wherein it is described the step of 3) in soil layer be loess formation
And/or sandy soil layer.
Preferably, the construction method of the new structure soil body in foregoing refuse dump, wherein it is described the step of 3) in the thickness of the layer not
Less than 50cm.
The object of the invention to solve the technical problems is also realized using following technical scheme.Itd is proposed according to the present invention
A kind of refuse dump Reclaimed Soil, obtained by construction method of the present invention, it includes：Mining area solid is followed successively by from top to bottom
Discarded object, feldspathic sandstone layer, soil layer.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
Preferably, foregoing refuse dump Reclaimed Soil, wherein the thickness of described feldspathic sandstone impervious barrier is 8-20cm, unit weight
More than 1.80g/cm3, described the thickness of the layer is not less than 50cm.
Preferably, foregoing refuse dump Reclaimed Soil, wherein the particle diameter of feldspathic sandstone is less than 20mm in described feldspathic sandstone layer.
Preferably, foregoing refuse dump Reclaimed Soil, wherein described soil layer is loess formation and/or sandy soil layer.
By above-mentioned technical proposal, the construction method and refuse dump Reclaimed Soil of the new structure soil body in refuse dump of the present invention at least have
There are following advantages：
1st, method of the invention enables refuse dump to keep its soil moisture, considerably reduces soil erosion, promotes mining area
Ecological recovery；
2nd, this method effectively solve current Jin, Shaanxi and Inner Mongolia mining area refuse dump because of institute overburden layer thickness deficiency and caused by water
Fertile leakage problems, the shortcomings of compensate for loess and sandy soil retain water and nutrients difference；
3rd, method of the invention is gathered materials on the spot, and is turned waste into wealth, easy for construction, cost is low, suitable for large area applications.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is refuse dump Reclaimed Soil schematic diagram.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to the construction method according to the new structure soil body in refuse dump proposed by the present invention and refuse dump Reclaimed Soil its
Embodiment, feature and its effect, describe in detail as after.In the following description, different " embodiment " or " implementation
What example " referred to is not necessarily the same embodiment.In addition, the special characteristic or feature in one or more embodiments can be by any suitable shapes
Formula combines.
Embodiments of the invention propose a kind of construction method of the new structure soil body in refuse dump, mainly include the following steps that：
1) feldspathic sandstone of crushing is inserted in refuse dump；Wherein, because feldspathic sandstone contains more 2:1 type alumino-silicate stratiform
Mineral montmorillonite, 2:1 type alumino-silicate stratiform mineral montmorillonite has higher cation exchange capacity and water absorbing capacity, feldspathic sandstone
Volume is expandable to tens times after water suction, can be very good to prevent the soil water leakage of refuse dump.
2) feldspathic sandstone is compacted, obtains feldspathic sandstone impervious barrier；
3) overlying soil on feldspathic sandstone layer.
As the preferred of above-described embodiment, the particle diameter of the feldspathic sandstone after being crushed in step 1) is less than 20mm, and particle diameter is less than
20mm feldspathic sandstone is easy to be compacted, and improves operating efficiency.
As the preferred of above-described embodiment, feldspathic sandstone is tried using road roller compacting in step 2), using road roller pressing arsenic sand
Rock can reduce working time raising working effect, while can be compacted the gangue of refuse dump, make the soil water of refuse dump
Divide and not easily run off.
As the preferred of above-described embodiment, the thickness of feldspathic sandstone layer is 8-20cm in step 2), and unit weight is more than 1.80g/
cm3；Wherein thickness is 8-20cm, and unit weight is more than 1.80g/cm3Feldspathic sandstone layer water absorbing capacity it is strong, in the feldspathic sandstone layer of the scope
Overlying soil meets the Water-saving effect of its soil layer.
As the preferred of above-described embodiment, soil layer is loess formation and/or sandy soil layer in step 3), and this method is mainly used in Shanxi
The refuse dump for bordering on area is covered in Shan, and it is the important Coal Energy Source base in China that Jin, Shaanxi and Inner Mongolia, which border on area, while this area is mainly loess
And sandy soil, so covering feldspathic sandstone layer with least one of loess and sandy soil.
As the preferred of above-described embodiment, the thickness of the layer is more than or equal to 50cm in step 3), is reclaimed according to State owned land
Technical standard, Reclaimed Land soil thickness are no less than 50cm.
As shown in figure 1, a kind of refuse dump Reclaimed Soil, embodiments of the invention are also proposed according to above-described embodiment present invention
Refuse dump Reclaimed Soil by the present invention construction method obtain, it includes, and is followed successively by mining area solid waste 1 from top to bottom,
Feldspathic sandstone layer 2, soil layer 3；Wherein, because feldspathic sandstone contains more 2:1 type alumino-silicate stratiform mineral montmorillonite, 2:1 type silicon
Aluminate stratiform mineral montmorillonite has higher cation exchange capacity and water absorbing capacity, and volume is expandable to after feldspathic sandstone water suction
Tens times, it can be very good to prevent refuse dump Reclaimed Soil Water deep leaching.
As the preferred of above-described embodiment, the thickness of feldspathic sandstone layer is 8-20cm in the present embodiment, and unit weight is more than 1.80g/
cm3, described the thickness of the layer is not less than 50cm.
As the preferred of above-described embodiment, in the present embodiment in the feldspathic sandstone layer of refuse dump Reclaimed Soil feldspathic sandstone particle diameter
Less than 20mm.
As the preferred of above-described embodiment, the soil layer of refuse dump Reclaimed Soil is loess formation and/or sandy soil in the present embodiment
Layer.
Soil moisture measurement equipment and soil water evaporation measurement are set on the refuse dump Reclaimed Soil of the present embodiment
Equipment, soil moisture measurement equipment are used for the measurement of soil water content, and soil water evaporation amount equipment is used to measure the soil water
The evaporation capacity divided, judge that new structure refuse dump soil moisture keeps effect by soil moisture and its evaporation capacity
Wherein, the present embodiment is using the Trime-TDR measurement new structure soil moistures in refuse dump, using small-sized evaporation measurement apparatus
Measure the evaporation capacity of its soil moisture.
Embodiment 1
In July, 2014, quasi- flag sharp No. 1 refuse dump cell in colliery forever in the 5m × 5m Inner Mongol, first with pulverizer by arsenic
Sandstone is crushed, and the particle diameter of the feldspathic sandstone after crushing is less than 20mm, is then filled with feldspathic sandstone, is rolled feldspathic sandstone with road roller
Real, the feldspathic sandstone thickness degree after rolling is 8cm, and unit weight is more than 1.80g/cm3, 51cm loess is covered on feldspathic sandstone layer, is obtained
To refuse dump Reclaimed Soil, set Trime-TDR to monitor pipe and small-sized evaporation measurement apparatus on the Reclaimed Soil of refuse dump, be used for
Soil moisture measurement and evaporation capacity determine.
Comparative example 1
The refuse dump cell of comparative example 1 is not filled with feldspathic sandstone, and other steps are same as Example 1.
9 days-the September of August in 2014 20 days, to the water content of soil and soil moisture of rainfall, embodiment 1 and comparative example 1
Evaporation carries out dynamic monitoring respectively, according to principle of water balance to feldspathic sandstone impervious barrier anti-seepage effect and the shadow to soil moisture content
Sound is analyzed.Total rainfall is 137.6mm during this period, arsenic sandstone Anti-seeping technology 0-51cm water content of soil in embodiment 1
44.51mm is added, 106% is improved than the 21.6mm without Anti-seeping technology.The leakage for having feldspathic sandstone Anti-seeping technology is
7.98mm, than the leakage that the 37.0mm without Anti-seeping technology reduces 29.02mm, it can thus be appreciated that the row after feldspathic sandstone Anti-seeping technology
Native field soil moisture keeps effect notable.
Embodiment 2
In July, 2014, quasi- flag sharp No. 2 refuse dump cells in colliery forever in 8m × 10m Inner Mongol, first with pulverizer by arsenic sand
Rock is crushed, and the particle diameter of the feldspathic sandstone after crushing is less than 20mm, is then filled with feldspathic sandstone, is rolled feldspathic sandstone with road roller
Real, the feldspathic sandstone thickness degree after rolling is 15cm, and unit weight is more than 1.80g/cm3, 51cm sandy soil are covered on feldspathic sandstone layer, are obtained
To refuse dump Reclaimed Soil, set Trime-TDR to monitor pipe and small-sized evaporation measurement apparatus on the Reclaimed Soil of refuse dump, be used for
Soil moisture measurement and evaporation capacity determine.
Comparative example 2
The refuse dump cell of comparative example 2 is not filled with feldspathic sandstone, and other steps are same as Example 2.
9 days-the September of August in 2014 20 days, to the water content of soil and soil moisture of rainfall, embodiment 2 and comparative example 2
Evaporation carries out dynamic monitoring, is entered according to influence of the principle of water balance to feldspathic sandstone impervious barrier anti-seepage effect and to soil moisture content
Analysis is gone.Total rainfall be 137.6mm during this period, and arsenic sandstone Anti-seeping technology 0-51cm water content of soil increases in embodiment 2
59.0mm, than the 21.6mm without Anti-seeping technology improves 145%.The leakage for having feldspathic sandstone Anti-seeping technology is 7.21mm, than
37.0mm without Anti-seeping technology reduces 29.79mm leakage, it can thus be appreciated that the soil of the refuse dump after feldspathic sandstone Anti-seeping technology
Earth water tariff collection effect is notable.
Embodiment 3
In July, 2014, quasi- flag sharp No. 3 refuse dump cells in colliery forever in 6m × 7m Inner Mongol, first with pulverizer by arsenic sand
Rock is crushed, and the particle diameter of the feldspathic sandstone after crushing is less than 20mm, is then filled with feldspathic sandstone, is rolled feldspathic sandstone with road roller
Real, the feldspathic sandstone thickness degree after rolling is 12cm, and unit weight is more than 1.80g/cm3, the covering 50.5cm sandy soil on feldspathic sandstone layer
And loess, the wherein weight ratio of sandy soil and loess is 1：1, refuse dump Reclaimed Soil is obtained, is set on the Reclaimed Soil of refuse dump
Trime-TDR monitorings pipe and small-sized evaporation measurement apparatus, are determined for soil moisture measurement and evaporation capacity.
Comparative example 3
The refuse dump cell of comparative example 3 is not filled with feldspathic sandstone, and other steps are same as Example 3.
9 days-the September of August in 2014 20 days, to the water content of soil and soil moisture of rainfall, embodiment 3 and comparative example 3
Evaporation carries out dynamic monitoring, is entered according to influence of the principle of water balance to feldspathic sandstone impervious barrier anti-seepage effect and to soil moisture content
Analysis is gone.Total rainfall be 137.6mm during this period, arsenic sandstone Anti-seeping technology 0-50.5cm water content of soil increasing in embodiment 3
47.6mm is added, 147% is improved than the 19.3mm without Anti-seeping technology.The leakage for having feldspathic sandstone Anti-seeping technology is 8.9mm, than
39.0mm without Anti-seeping technology reduces 30.1mm leakage, it can thus be appreciated that the soil of the refuse dump after feldspathic sandstone Anti-seeping technology
Water tariff collection water conservation effect is notable.
Embodiment 4
In July, 2015, quasi- flag sharp No. 4 refuse dump cells in colliery forever in the 8m × 8m Inner Mongol, first with pulverizer by arsenic
Sandstone is crushed, and the particle diameter of the feldspathic sandstone after crushing is less than 20mm, is then filled with feldspathic sandstone, is rolled feldspathic sandstone with road roller
Real, the feldspathic sandstone thickness degree after rolling is 10cm, and unit weight is more than 1.80g/cm3, 50cm sandy soil are covered on feldspathic sandstone layer, are obtained
To refuse dump Reclaimed Soil, set Trime-TDR to monitor pipe and small-sized evaporation measurement apparatus on the Reclaimed Soil of refuse dump, be used for
Soil moisture measurement and evaporation capacity determine.
Comparative example 4
The refuse dump cell of comparative example 4 is not filled with feldspathic sandstone, and other steps are same as Example 4.
9 days-the September of August in 2015 20 days, to the water content of soil and soil moisture of rainfall, embodiment 4 and comparative example 4
Evaporation carries out dynamic monitoring, is entered according to influence of the principle of water balance to feldspathic sandstone impervious barrier anti-seepage effect and to soil moisture content
Analysis is gone.Total rainfall is 150mm during this period, and arsenic sandstone Anti-seeping technology 0-50cm water content of soil adds in embodiment 4
46mm, 119% is improved than the 21.0mm without Anti-seeping technology.The leakage for having feldspathic sandstone Anti-seeping technology is 8.0mm, than without antiseepage
The 42.0mm of processing reduces 34mm leakage, it can thus be appreciated that the soil moisture of the refuse dump after feldspathic sandstone Anti-seeping technology is kept
Water conservation effect is notable.
Embodiment 5
In July, 2015, quasi- flag sharp No. 5 refuse dump cells in colliery forever in the 5m × 5m Inner Mongol, first with pulverizer by arsenic
Sandstone is crushed, and the particle diameter of the feldspathic sandstone after crushing is less than 20mm, is then filled with feldspathic sandstone, is rolled feldspathic sandstone with road roller
Real, the feldspathic sandstone thickness degree after rolling is 16cm, and unit weight is more than 1.80g/cm3, 50cm sandy soil are covered on feldspathic sandstone layer, are obtained
To refuse dump Reclaimed Soil, set Trime-TDR to monitor pipe and small-sized evaporation measurement apparatus on the Reclaimed Soil of refuse dump, be used for
Soil moisture measurement and evaporation capacity determine.
Comparative example 5
The refuse dump cell of comparative example 5 is not filled with feldspathic sandstone, and other steps are same as Example 5.
9 days-the September of August in 2014 20 days, to the water content of soil and soil moisture of rainfall, embodiment 5 and comparative example 5
Evaporation carries out dynamic monitoring respectively, according to principle of water balance to feldspathic sandstone impervious barrier anti-seepage effect and the shadow to soil moisture content
Sound is analyzed.Total rainfall be 150mm during this period, arsenic sandstone Anti-seeping technology 0-50cm water content of soil increasing in embodiment 5
53mm is added, 121% is improved than the 24mm without Anti-seeping technology.The leakage for having feldspathic sandstone Anti-seeping technology is 7.0mm, than without anti-
Oozing the 36.0mm of processing reduces 29mm leakage, it can thus be appreciated that the soil water code insurance of the refuse dump after feldspathic sandstone Anti-seeping technology
It is notable to hold water conservation effect.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, according to
Any simple modification, equivalent change and modification made according to the technical spirit of the present invention to above example, still falls within this hair
In the range of bright technical scheme.
Claims (10)
- A kind of 1. construction method of the new structure soil body in refuse dump, it is characterised in that：It comprises the following steps：1) feldspathic sandstone of crushing is inserted in refuse dump；2) the described feldspathic sandstone of compacting, obtains feldspathic sandstone impervious barrier；3) overlying soil on described feldspathic sandstone layer.
- 2. the construction method of the new structure soil body in refuse dump according to claim 1, it is characterised in that arsenic in described step 1) The particle diameter of sandstone is less than 20mm.
- 3. the construction method of the new structure soil body in refuse dump according to claim 1, it is characterised in that using pressure road in step 2) The described feldspathic sandstone of machine compacting examination.
- 4. the construction method of the new structure soil body in refuse dump according to claim 1, it is characterised in that arsenic in described step 2) The thickness of sandstone impervious barrier is 8-20cm, and unit weight is more than 1.80g/cm3。
- 5. the construction method of the new structure soil body in refuse dump according to claim 1, it is characterised in that the soil described in step 3) Layer is loess formation and/or sandy soil layer.
- 6. the construction method of the new structure soil body in refuse dump according to claim 1, it is characterised in that the soil described in step 3) The thickness of layer is not less than 50cm.
- 7. a kind of refuse dump Reclaimed Soil, it is characterised in that obtained as the administering method described in claim any one of 1-6；Its Including：Mining area solid waste, feldspathic sandstone layer, soil layer are followed successively by from top to bottom.
- 8. refuse dump Reclaimed Soil according to claim 7, it is characterised in that the thickness of described feldspathic sandstone layer is 8- 20cm, unit weight are more than 1.80g/cm3, described the thickness of the layer is not less than 50cm.
- 9. refuse dump Reclaimed Soil according to claim 7, it is characterised in that the grain of feldspathic sandstone in described feldspathic sandstone layer Footpath is less than 20mm.
- 10. refuse dump Reclaimed Soil according to claim 7, it is characterised in that described soil layer is loess formation and/or sand Soil layer.
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| CN201610566168.8A CN107624292A (en) | 2016-07-18 | 2016-07-18 | The construction method and refuse dump Reclaimed Soil of the new structure soil body in refuse dump |
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| CN201610566168.8A CN107624292A (en) | 2016-07-18 | 2016-07-18 | The construction method and refuse dump Reclaimed Soil of the new structure soil body in refuse dump |
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| CN109757135A (en) * | 2018-12-29 | 2019-05-17 | 国家能源投资集团有限责任公司 | Utilize the method for nutrients enrichment opencast discharging earth field compacting yellow clay structure |
| CN110495281A (en) * | 2019-08-28 | 2019-11-26 | 陕西省土地工程建设集团有限责任公司 | A kind of soil method of earth building object |
| CN113880669A (en) * | 2021-10-11 | 2022-01-04 | 扎赉诺尔煤业有限责任公司 | Preparation method and application of open pit coal mine soil conditioner in alpine region |
| CN114651550A (en) * | 2022-01-24 | 2022-06-24 | 陕西省生物农业研究所 | Surface soil reconstruction mode for open-pit mine area and application |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109757135A (en) * | 2018-12-29 | 2019-05-17 | 国家能源投资集团有限责任公司 | Utilize the method for nutrients enrichment opencast discharging earth field compacting yellow clay structure |
| CN110495281A (en) * | 2019-08-28 | 2019-11-26 | 陕西省土地工程建设集团有限责任公司 | A kind of soil method of earth building object |
| CN113880669A (en) * | 2021-10-11 | 2022-01-04 | 扎赉诺尔煤业有限责任公司 | Preparation method and application of open pit coal mine soil conditioner in alpine region |
| CN114651550A (en) * | 2022-01-24 | 2022-06-24 | 陕西省生物农业研究所 | Surface soil reconstruction mode for open-pit mine area and application |
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Application publication date: 20180126 |