The Technique Of Composite Grouting In Foundation Reinforce

Technique of composite grouting is a new type grouting technique which make still pressure technique and high pressure spin spray technique unite according to sequence in order to exert their advantage. It can fully exert each advantage and get over each disadvantage about still pressure technique and high pressure spin spray technique, thereby attain the maximal applicability stratum range and best reinforce effect, and assure succeed rate and security of reinforce .First, the paper analyze the classify and characteristic of grouting technique, detailed research the definition, characteristic and application in foundation reinforce of technique of composite base in summarizing the development and application of grouting technique inside and outside.Second, the paper in-depth discuss the reinforce foundation operation mechanism of technique of composite grouting, including spray incise action of high pressure spray flow to soil, mill metathesis concretion action, and penetrate, split, crush action of serum to soil, etc.Third, the paper in-depth study design calculate of composite grouting,design of composite grouting technic parameter.Fourth, the paper study the serum material and prescription of by chamber experiment, study the construct process and key technic parameter by locale simulation test, and study the dispose effect, applicability stratum range and operation mechanism in foundation reinforce by studying practicality project, the paper still study the test of reinforce effect about present building foundation and disfigurement stake of technique of composite grouting.Fifth, the paper detailed study the characteristic, construct order, serum material, major construct process parameter, major construct equipment of technique and the construct process of composite grouting.