Backfill earth construction method by using premixed flow state solidified earth

A technology of solidifying soil and backfilling soil, which is applied in filling, soil protection, infrastructure engineering, etc., and can solve problems such as poor control of the amount of rubber soil and ground subsidence

Inactive Publication Date: 2018-03-20
王继忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Some projects adopt the method of water sinking, adding water to the backfilled earthwork, and the earthwork is compacted thro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

[0022] Construction example 2, in a pipe gallery project, the buried depth is 18 meters, the slopes on both sides are sprayed with concrete slope protection, and the cushion at the bottom of the pipe gallery protrudes to connect with the slope protection on both sides. Clean up the fertilizer tank, use the soil excavated from the pipe gallery as the material for backfilling the ready-mixed fluid solidified soil, and transport it to the horizontal mixer with a conveyor belt, prepare the curing agent into a slurry and transport it to the mixer, the amount of curing agent added It is 22% of the weight ratio of the final product; after adding the curing agent slurry, it is fully mixed, and the crushing device of the mixer breaks the earthwork and fully stirs to form a ready-mixed fluid solidified soil. The ready-mixed fluid solidified soil is poured into the fertilizer tank through the chute, and the fluid solidified soil is poured on both sides of the pipe gallery at the same time...

example 3

[0023] Construction example 3, a coal mine goaf, the roadway is buried 15 meters deep, the maximum width is 5 meters, and the height is 2.5 meters. Convey the earthwork to the vertical mixer, and at the same time, prepare the curing agent into a slurry and send it to the mixer. The amount of curing agent added is 14% of the weight ratio of the final product; after adding the curing agent slurry, it is fully mixed, and the crushing device of the mixer will crush the earthwork. Crushed and fully stirred to form ready-mixed fluid solidified soil. Connect the ground pump to the discharge port of the mixer, and send the fluidized solidified soil into the gob. The slump of the fluidized solidified soil is 18mm, and the 60-day strength of the ready-mixed fluidized solidified soil is not less than 0.5MPa.

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PUM

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Abstract

A backfill earth construction method by using premixed flow state solidified earth comprises the following steps that earth in a natural state is backfilled to a construction site where backfill earthis required; premixed curing agent slurry is poured into the backfill earth, and the slurry is higher than the backfilled earth by a certain height to form gravity momentum, so that the slurry permeates into the backfilled earth under action of the self-gravity; and the situation that whether the slurry permeates into the bottom of the earth or not is detected, if the earth is not fully permeatedby the slurry, and the curing agent slurry is supplemented and poured to continue permeating and/or a mixing device is used for mixing in the part without being fully permeated. Alternatively, the method comprises the following steps that the earth body is input to a mixer, at the same time, the mixed curing agent slurry is also added to the mixer for full blending, crushing and mixing accordingto the predetermined proportion to form premixed flow state solidified earth; the premixed flow state solidified earth is conveyed to a backfilled earth construction site through a pump or a tanker for backfill operation; and large aggregate is thrown into the premixed flow state solidified earth during the backfill operation process. According to the two methods, the earth excavated by the project can be utilized to the utter most and most rapidly, the construction speed is high, the cost is low, and the quality is reliable.

Description

technical field [0001] The invention relates to a method for backfilling soil construction by using ready-mixed fluid solidified soil. Background technique [0002] There are a large number of construction conditions that require backfilling in the fields of building construction, road construction, water conservancy construction, and mining goafs. Most of the existing technologies use the traditional method of backfilling with lime soil in sections. This method has slow construction speed, many human factors, and unstable construction quality, which has brought many hidden dangers to the project quality. With the development of the economy, some projects use low Marked concrete replaces lime soil for backfill construction. This method has fast construction speed and reliable quality, but the cost is too high, and if excavation is required later, it will bring great inconvenience. [0003] Engineers and technicians have carried out many practices and inventions for backfill...

Claims

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Application Information

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IPC IPC(8): E02D17/18E02D3/10
CPCE02D17/18E02D3/10
Inventor 王继忠
Owner 王继忠
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