The mechanism research on two times high-pressure splits grouting;

This paper analyze the construction effect by static pressure and fracture grouting process on soft ground at a section of railway foundation of Bin Sui railway, and presents some problems which need to be noticed in the design of ground process in analogous formations.

Experiment of fracturing grouting in soft flowing mucky clay in Nanjing tunneling construction;

Steel floral tube fracturing grouting technology is adopted in slop reinforcement of Shenzhen Buji eastern and western main-road.

The design method and construction process of fracturing grouting method applied in soft foundation treatment in operating Harbin—Suifenhe railway are introduced in details.

Penetration radius and grouting pressure in fracture grouting;

Following fracture grouting and reinforcement of soft clay,the grout concretion in the clay will form a veined supporting frame,leading to significant increase in compression module of the resulting composite mass.

In this paper,factors exerting influences on beating capacity and working mechanism of split- ring grouting have been analyzed for the soil layer anchor pole,and deducing of calculation parameter is completed for splitting grouting.

In the light of the suddenly dangerous situation of foundation sinking during the construction of high-formwork in Shenzhen conference and exhibition center, the split grouting technique is adopted, which strengthens the bearing capacity of foundation, makes the stable foundation not sink, and assures that the top framework construction can be carried through smoothly.