Churning process, often there is a certain amount of soil particles, along with a portion of the slurry wall grouting pipe out of the ground, through the mud spillover observation, you can keep abreast of the soil conditions determine the approximate effect Jet and determine reasonable parameters, etc., based on experience, take the pulp (with a soil particles, water and slurry) of less than 20% grouting is normal, more than 20%, or completely take slurry, the reasons should be identified promptly take appropriate measures . 1, the flow rate constant and the pressure suddenly drops, you should check the leakage site, set aside when necessary grouting pipe, check the sealed performance; 2, there is not risk to take pulp slurry or intermittent, or the Department of soft soil as a normal phenomenon, may be appropriate to re-spray; if there are empty, underground passage near the line, you should not upgrade grouting pipe, sealing curtain Jixian pile, continue until take slurry grouting date, sealing curtain pile driver parameters, or After the outgoing slurry grouting pipe to be solidified, re-grouting until take slurry date, Rotary Jetting Water Curtain pile, using quick-setting slurry, if necessary, to facilitate the solidification in the vicinity of the slurry grouting pipe; 3, take measures to reduce the risk pulp The main reason for excessive slurry, generally effective range jet grouting incompatible, much more than the amount of slurry grouting Jet consolidation required due; high pressure spraying pile is high pressure rotating nozzles grout injected into the soil and the soil mixed to form a continuous lap of cement and solid. Less construction area, vibration, low noise, sealing curtain pile driver manufacturers, but easy to pollute the environment, high cost, for particular can not discharge slurry solidified soil should not be used.