Jet Grouting And Construction Of The Mechanism Of Strengthening Anti-technology Research

High pressure jet grouting technology has remarkable characters of wide range in scope,convenient for construction, safety, high pile shaft strength, abundant material, lower price and so on. So it is widely applied in consolidation of building foundation, foundation treatment, anti-seepage or impermeable, stability of slope, impermeable dam, etc. it has been spreaded over the world. Some research findings have been made after reviewing a few research achievements of predecessors.Firstly, The paper analyze the classify characters of injection grout technique, detailed research the mechanism, type, character and the application in geotechnique in summarizing the development and application of grouting technique of the world. the main function of reinforcement mechanism of high pressure jet grouting that soil cement is produce by the physical and chemical reaction of soil and grout is put forward. the property of soil cement is preliminarily studied with laboratory experiment and theoretical analysis. The character is pointed out that soil cement created with high pressure jet grouting is part of soil and its growth rate of late stage intension is obvious. These properties shall be taken into consideration in the design of high pressure jet grouting.Secondly, Combine with the mechanics characteristic of liquid, the structure of high-pressure jet grouting, the destroy theory in the gravel strata, Analysis the destroy range in the gravel strata when high-pressure jet grouting technology is applied. Through the experiment ,the main factors include number blows of standard penetration test, the energy of jet grouting, grain diameter, the serum of jet grouting which affect the destroy range in the gravel strata is researched.Then, something were detailed studied in this paper, such as high pressure jet grouting technology characters, key construction technology parameters, grout material, adaptable stratum range, reinforcement effect mechanism, reinforcing treatment effect, key technology parameters and design. Application range, construction technology parameters ascertaining and qualification test method of high pressure jet grouting technology were detailed expound.In the end, according to two actual project application examples of high pressure jet grouting technology, concrete project achievement and experience were summed up, which provided other projects with reference.