Backfill earth construction method by using premixed flow state solidified earth

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...

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 through the driving effect of water, but the rubber soil or ground subsidence is often caused due to poor control of the amount of water.