High Pressure Churning Pile mechanism shape the direction of movement of the nozzle body and consolidation continued injection time have a close relationship. When the nozzle is moved while rotating and lifting convenient high-pressure pump, they form a cylindrical or cylindrical-shaped consolidation body; when one side of the ejection nozzle face lift, the body will form a wall-like consolidation. Rotary boulders and soil nitrate spray rot consolidation mechanism is different from the sandy soil and clay soil. In large gravel, the jet stream due to a large number of gravel body weight, can not be cut or particles to move and rearrange, jet stream only by its voids filled voids around. In view of the rotation of the nozzle enables the jet to maintain a certain direction, to the surrounding slurry extrusion, the mechanism is close to the so-called theory of the mechanism of penetration, thus forming a cylindrical reinforced foundation. For high-pressure pump rot nitrate soil model parameters price, jet grouting solidification body shape and its nature, subject to plant fiber thickness and length, a great influence how much water content and soil particles. Of the fiber thin and short rot soil nitrate Jet, and Jet entirely in clay in the same mechanism. However, for a long time, crude fiber and more quantity of jet grouting soil nitrate decay, because the fibrous flexible, cutting is difficult. But because of its porosity more high-pressure pump, the jet can still pass through the fiber body to form a cylindrical body consolidation. But in the more dense fibrous parts of the high-pressure pump how much of a relatively small size, poor uniformity of solidification body. When setting spray, jet grouting nozzle does not rotate, a fixed direction only for horizontal spray nozzle gradually upward, and we rush into a groove in the soil, and coming down the slurry tank. Rushed down to soil particles from the soil, and part with the water stream is brought out to and the rest of the particles and slurry mixing, and finally form a plate-shaped consolidation thereof. Consolidation body part permeable layer in sandy soil, but in the clay soil does not. High pressure spraying pile construction quality control measures: material selection and construction quality control parameters 1, grouting the curing agent and an admixture varieties, specifications and performance should be consistent with the design. 2, cement before use for Quality Assurance, stirred slurry of water used should be consistent with "concrete mixing water standards." 3, in order to understand the nature and reasonable formula jet grouting slurry body must take soil samples on-site layers, indoors and with different water content ratio test, preferably the most reasonable slurry formulation. Before the formal construction site injection test to identify jet diameter and strength of solidification body to verify the reliability and safety of the design.