Automatic matching method of mixing times and lifting speed of deep sea cement soil

Abstract

An automatic matching method for the number of times of offshore deep cement soil mixing and the lifting speed is characterized in that: a control model of an automatic matching algorithm is given first; and the number of times of mixing per unit length N is generally greater than or equal to NS according to the construction requirements, N=((D / V) / D)*R*n*l, namely, N=(R / V)*n*l, wherein D is the length of piles, l is the number of times that mixing wings move up and down, R is the rotation speed of the mixing wings, V is the lifting speed of a winch, and n is the number of the mixing wings participating in mixing. When d>=D-b, N=(R / V)*n*l, wherein d is the depth of a processor. At the moment, R=(N / (n*l))*V, and V=(R / (N*l))*n. When d<D-b, R=(N / n)*V, and V=(R / N)*n. According to a method for controlling the number of times of mixing N and the lifting speed V of an offshore deep cement soil mixing ship processor further presented by the invention, the control on the number of times of mixing and the control on the lifting speed influence each other and are independent of each other.

Description

Technical field [0001] The invention belongs to the technical field of marine foundation treatment engineering, and specifically relates to a technology for automatically matching the mixing frequency and the lifting speed of a deep sea cement-soil mixing ship processor. Background technique [0002] The deep cement mixing pile uses cement as the main agent of the curing agent. The soft soil and the curing agent are forcedly mixed in the deep part of the foundation through a special deep mixing machine to harden the soft soil and improve the strength of the foundation. The construction of deep mixing piles uses mixing wings to forcibly mix cement slurry and soft soil. The more mixing times, the more uniform the mixing and the super-high strength of the cement soil. However, the more mixing times, the longer the construction time and the lower the work efficiency. How to effectively control the mixing frequency and lifting speed of the processor to ensure the quality of deep ceme...

AI Technical Summary

Problems solved by technology

Manual operation is imprecise, and the response time is relatively long. If an emergency occurs, the number of mixing and the lifting speed cannot be adjusted in time, which will not only affect the pile quality of the mixing pile, but also affect the construction efficiency.

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