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Construction method of a waste incineration ash pile

A waste incineration ash and construction method technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as pollution and high environmental costs, and achieve the effects of avoiding high energy consumption, large pores, and reducing landfill volume

Active Publication Date: 2020-02-11
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Technical problem: Most of the existing cemented piles use cement materials and gravel materials, which have high environmental costs, and the use of chemical agents to solidify will cause pollution to the groundwater body and soil. The material is made of microbe-induced calcium carbonate crystallization technology. After the pile hole is made, the waste incineration ash slag mixed with the bacteria solution is poured, the cement solution is grouted, and the process of microbial cell adsorption and fixation, urease hydrolysis, and crystallization cementation is made Garbage incineration ash pile

Method used

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  • Construction method of a waste incineration ash pile

Examples

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Effect test

Embodiment 1

[0038] In this example, a construction method of waste incineration ash piles is used to construct composite foundations. The design pile length is 9.0m, and the pile diameter is 0.6m. The steps of the method are as follows:

[0039] a. Sink the steel pipe 2 with the concrete prefabricated pile point 1 into the foundation 3 to a depth of 9.0m to make a pile hole;

[0040] b. Mix the bacteria liquid with medium sand and waste incineration ash first, then add 0.05mol / L calcium chloride solution and mix to form a mixture;

[0041] c. Pour the mixture into the steel pipe 2 that has been submerged in the foundation in advance, and bury the grouting pipe 4 and the grouting pipe 5 in the mixture 6 during the process of pouring the mixture, and the grouting pipe 4 is buried in the center of the pile hole On the axis and the height of the bottom nozzle from the bottom of the pile hole is 3.0m, the slurry pumping pipe 5 is buried along the inner wall of the steel pipe 2 and the height o...

Embodiment 2

[0048] In this example, a construction method of waste incineration ash piles is used for the construction of composite foundations. The design pile length is 12.0m and the pile diameter is 0.5m. The steps of the method are as follows:

[0049]a. Sink the steel pipe 2 with the concrete prefabricated pile tip 1 into the foundation 3 to a depth of 12.0m to make a pile hole;

[0050] b. Mix the bacteria liquid with medium sand and waste incineration ash first, then add 0.05mol / L calcium chloride solution and mix to form a mixture;

[0051] c. Pour the mixture into the steel pipe 2 that has been submerged in the foundation in advance, and bury the grouting pipe 4 and the grouting pipe 5 in the mixture 6 during the process of pouring the mixture, and the grouting pipe 4 is buried in the center of the pile hole On the axis and the height of the bottom nozzle from the bottom of the pile hole is 4.0m, the slurry pumping pipe 5 is buried along the inner wall of the steel pipe 2 and the...

Embodiment 3

[0058] In this example, a construction method of waste incineration ash piles is used to construct drainage consolidation foundations. The design pile length is 12.0m and the pile diameter is 0.4m. The steps of the method are as follows:

[0059] a. Sink the steel pipe 2 with the concrete prefabricated pile tip 1 into the foundation 3 to a depth of 12.0m to make a pile hole;

[0060] b. Mix the bacteria liquid with medium sand and waste incineration ash first, then add 0.05mol / L calcium chloride solution and mix to form a mixture;

[0061] c. Pour the mixture into the steel pipe 2 that has been submerged in the foundation in advance, and bury the grouting pipe 4 and the grouting pipe 5 in the mixture 6 during the process of pouring the mixture, and the grouting pipe 4 is buried in the center of the pile hole On the axis and the height of the bottom nozzle from the bottom of the pile hole is 4.0m, the slurry pumping pipe 5 is buried along the inner wall of the steel pipe 2 and ...

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Abstract

The invention discloses a construction method for an incinerated garbage ash pile, and belongs to the technical fields of solid waste resource utilization and foundation treatment. The construction method is used for solving the problem of waste utilization of incinerated garbage ash and is characterized by comprising the following steps that a, a steel pipe 2 provided with a concrete precast piletip 1 sinks into a foundation 3 so that a pile hole can be formed; b, bacteria liquid, medium sand and the incinerated garbage ash are uniformly mixed at first and then added with a 0.05 mol / L calcium chloride solution to be mixed into a mixture; c, the mixture is poured into the steel pipe 2 sinking into the foundation in advance, and a grouting pipe 4 and a grout extracting pipe 5 are buried inthe mixture 6 in the mixture filling process; d, after the pile hole is filled with the mixture 6, the steel pipe 2 is pulled out; e, liquid in pores of the mixture in the pile hole is completely extracted through the grout extracting pipe 5, then, consolidating fluid is injected through the grouting pipe 4 till the pores of the mixture in the whole pile hole is full of the consolidating fluid, and still standing is conducted for 6-24 h; and f, the step e is repeated for 4-6 times, and construction of the incinerated garbage ash pile is completed.

Description

technical field [0001] The invention relates to a pile composite foundation construction method using municipal solid waste incineration bottom slag as main aggregate, and belongs to the technical field of solid waste resource utilization and foundation treatment. Background technique [0002] The bottom slag remaining after municipal solid waste incineration for power generation is regarded as solid waste. At present, the main disposal method is to send it to landfill for landfill, which requires a large amount of landfill space. The incineration bottom slag of municipal solid waste is an effective way to reduce and recycle it as a building material. It can be used for road filling and foundation replacement after being mixed or cemented with other building materials. The pile composite foundation in the weak foundation treatment technology and the enclosure piles in the deep foundation pit enclosure structure all involve the application of bonded piles. The pile body of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/34E02D15/00
CPCE02D5/34E02D15/00
Inventor 邵光辉陈著刘鹏
Owner NANJING FORESTRY UNIV
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