As the waterproof technology with high work efficiency,threefold high-pressure jet grouting plays a vital role in the water-proof and seepage-proff project of deep foundation pits.

The application of jet grouting in the treatment of ooze and quicksand;

Two foundation treatment methods of DDC and the high pressure jet grouting are introduced through practical project.

Application of high pressure jet grouting technique in limestone area;

Technical parameters for high pressure jet grouting by triple tube are classified into 2 categories:parameters for designing and parameters for construction.

Based on geological conditions of Yellow?River?crossing works in the Diversion Project from South to North China, the properties of grouting material and solidified mass in high pressure jet grouting were researched.

High-pressure injection grouting method is applicable to various foundation soil;the method can be applied to projects such as foundation treatment,remedy of building inclination,shielding soil or water in sidewall of deep foundation pit,consolidating base of foundation pit,preventing water creep and upwarping,consolidating dam and waterproof curtain,etc.

The origin together with its development survey of the high-pressure injection grouting method is introduced in this paper, and application areas,the mechanism of the foundation treatment,the uses of species and construction technique are discussed in general.

Application of high pressure spray injecting in the ash storage field in Haibo bay;

It introduces the design and construction of the program of the foundation support of Qunkang Technology edifice in Ji nan city,adapts the technologic methods of soil-nailed wall,suspended net shot,the pile-anchor,injecting and high pressure spray injecting stop water purdah to get the combined support.