Study on Performance of Long Distance Pipe Jacking and Drag Reducing Mud in Water-rich Sand Layer
Based on the friction resistance characteristics of the pipe jacking in the water-rich sand layer and the action mechanism of the high polymer,the optimal mud formula is obtained through the experiment:8%Ansin AX primary sodium bentonite +0.3%sodium carbonate +0.25%sodium polyacrylate +91.45%water.The experimental results show that the slurry with this ratio has not only high viscosity,but also good fluidity and dispersion,and small filtration loss,so the comprehensive performance is the best.The apparent viscosity of the mud was 65%higher than that before optimization,and the filtrate loss was 57%lower than that of the mud sampled in the field,which meets the performance requirements of the mud in the sand formation.
pipe jackingwater-rich sand layergrouting to reduce dragthixotropic mudproportioning experiment
NETL
NSTL
万方数据
维普
