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Solidified soil and anti-fouling and anti-seepage treatment method for large coal yards

A treatment method and soil solidification technology, which can be applied in protection devices, buildings, infrastructure engineering, etc., can solve the problems of high concrete floor price and difficult replacement of geomembrane, and achieve the reduction of comprehensive unit price, meet the requirements of stacking weight, and meet the The effect of impermeability requirements

Inactive Publication Date: 2018-06-22
BERIS ENG & RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of concrete floors is high, and it is difficult to replace the geomembrane after damage to large coal yards, which are frequently transported by vehicles

Method used

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  • Solidified soil and anti-fouling and anti-seepage treatment method for large coal yards
  • Solidified soil and anti-fouling and anti-seepage treatment method for large coal yards
  • Solidified soil and anti-fouling and anti-seepage treatment method for large coal yards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The dry clay of 85 parts by weight is spread in the mould, and the clay thickness is 23 centimetres. Pour 9.2 parts by weight of a 2.17% soil stabilizer solution (9 parts by weight of water and 0.2 parts by weight of soil stabilizer), and stir evenly. Pour 15 parts by weight of cement into the mold and stir evenly. After leveling, follow the principle of "light first and then heavy, first slow and then fast, first both sides and then the middle, first static pressure and then vibration" to carry out rolling until the compaction coefficient is 0.95 and stop. Lay two more layers of solidified soil on the compacted solidified soil in the same way as before. Adopting the method of covering the plastic film to maintain the health, the temperature is 30 ℃, and the curing is maintained for one week in a humid environment to obtain the curing agent anti-seepage layer, and its thickness is 60 cm.

Embodiment 2-6

[0059] Embodiment 2-6 carries out according to the same step as embodiment 1, and the technical parameter of each embodiment is as shown in table 1:

[0060] The technical parameter summary of each embodiment of table 1

[0061]

[0062] Performance Testing

[0063] The curing agent anti-seepage layer obtained in Examples 1-10 is subjected to a strength test, and the evaluation results are shown in Table 2:

[0064] Table 2 Summary of strength test results

[0065]

[0066] Coal yard floor project of a raw material yard in Rizhao, Shandong

[0067] According to the EIA report of this project, the raw material site (coal yard) belongs to the general pollution prevention and control area: the anti-seepage performance should be comparable to that of a 1.5-meter-thick clay layer (permeability coefficient 1.0×10 -7 cm / s) equivalent. Using solidified soil as the surface layer plan:

[0068] 1. Construction method selection:

[0069] The total thickness of the solidified ...

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Abstract

The invention belongs to the field of environmental protection, and particularly relates to a solidified soil and an anti-fouling and anti-seepage treatment method for large coal yards. The solidifiedsoil is prepared from the following components in parts by weight: 80 to 90 parts of soil, 0.02 to 0.4 part of soil solidifier, 12 to 18 parts of cement and 6 to 12.6 parts of water. The anti-foulingand anti-seepage treatment method for large coal yards comprises the following steps: (1) the soil solidifier and the water are uniformly mixed, so that a soil solidifier aqueous solution is prepared; (2) the soil solidifier aqueous solution is sprinkled onto clay and uniformly mixed, so that a first mixture is obtained; (3) the cement is spread onto the first mixture, and after uniform mixing, asecond mixture is obtained, i.e., the solidified soil; (4) the second mixture is rolled and cured. The solidified soil anti-seepage layer disclosed by the invention has good anti-seepage property andhigh compressive strength, and not only is the use requirement of piled weight in a large material yard met, but also the anti-seepage requirement of environmental impact assessment is met.

Description

technical field [0001] The invention belongs to the field of environmental protection, in particular to an antifouling and antiseepage treatment method for solidified soil and large coal yards. Background technique [0002] According to the national environmental protection requirements, groundwater pollution should be prevented for general industrial polluted sites, and anti-seepage treatment should be considered for the floor: the anti-seepage performance should be less than the permeability coefficient of 1.0×10 -7 cm / s. For large-scale coal shed yards, the traditional concrete floor plus impermeable geomembrane scheme, the support layer needs to be layered and compacted with plain soil and a medium-coarse sand cushion; the composite geomembrane (one cloth and one film) is laid in the middle, and the geotextile As the protective layer of the geomembrane, it is laid on the upper part of the geomembrane; the surface layer is protected by a concrete slab, and steel mesh is ...

Claims

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Application Information

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IPC IPC(8): C04B28/00E02D31/02
CPCC04B28/00C04B2111/00293E02D31/02C04B22/002C04B14/10C04B22/064C04B18/08C04B22/062C04B22/124C04B22/10C04B14/28C04B18/146C04B24/36C04B12/04C04B24/2652C04B24/2641C04B22/142C04B24/281C04B24/121C04B24/383
Inventor 赵广刘溢郭梁
Owner BERIS ENG & RES CORP
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