DJM machine high pressure jet grouting final restructuring spray recharge: After filling every hole injection plunger injection pump set amount of money, the use of high injection holes to take the next slurry to recharge, not decline until the opening level so far. Recycle slurry treatment: to back out of the high pressure jet grouting supporting slurry injection pump, lake adopt measures to a landfill treatment. Churning Pile rig EXPRESSWAY FOUNDATION our province is located in the coastal areas along the Yangtze River water network, JAC between stabling more than 1000 km from the highway run double was Triplex injection pump image , with more than 70% to 80% of the land area through soft roadbed average. The soft ground is well handled has a direct impact on the stability of the roadbed, the overall quality of operations and engineering works economy. The main treatment methods of soft groups are the following: ① plastic drainage board; ② mixing pile; ③ geosynthetic reinforced; ④ preloading and so on and so on. In contrast, since the construction period and DJM has preloading short, the settlement after other characteristics, it is widely used in highway soft foundation treatment in the province, such as the Shanghai-Nanjing Expressway was opened to traffic in Jiangsu Duan pump, Soft Ground project amounted to several million linear meters, is under construction in Jiangsu "Ninth Five" Highway also uses more than 10 million linear meters of DJM, and most of the construction has been completed.