The process of building water conservancy projects, especially in embankment dam construction process, in order to make the ground water permeability, seepage stability, strength, carrying capacity, for compression deformation capacity to meet the requirements, it is necessary to process the foundation. When dealing with gravel foundation, horizontal rotary spray rig, will be used in the following ways: 1, clayey cut sink, 2, concrete impervious wall, 3, grout curtain, jet grouting anchor rig, 4, impervious blanket, 5 Drainage and Pressure. When the permeable layer deep gravel foundation, seepage measures to implement the first two difficulties, it can use curtain grouting method. In simple terms, is the use of high-speed jet cutting soil mixed with stirring, to change the structure and composition of the original soil, Dongguan jet grouting rig, but poured grout or slurry form coagulated composite body, in order to achieve the purpose of strengthening the foundation and seepage. GZB-40C-pressure injection pump high-pressure jet grouting equipment, high pressure jet grouting to provide high-pressure water is mainly mud. For the new building, highway, railway, underground railways and other soft ground reinforcement, anti-seepage treatment for around foundation, cofferdam and hydropower dams. 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, it may be appropriate to re-spray; after such a cavity, underground passage near the line, you should not upgrade grouting pipe, continue to take slurry grouting until date, or set aside the slurry grouting pipe to be solidified, re-grouting until Until take slurry, if necessary using quick-setting slurry jet grouting bolt rig, easy to solidification in the vicinity of the slurry grouting pipe; 3, take measures to reduce the main reason for the pulp slurry excessive risk, are generally effective range jet grouting incompatible, much more than the Jet grouting consolidation due to the amount of pulp;