Reconstruction Technology of Mud-Water Separation Equipment for Large Diameter Slurry Shield Traversing the Fine-Grained Stratum
It is difficult for the mud-water equipment to separate the residue to the maximum extent when the large-diameter mud-water shield is excavated in the stratum with high fine particle content,which leads to a large amount of waste slurry and poor slag carrying,and seriously restricts the tunneling efficiency.It is a significant problem in the construction of mud-water shield.Based on the Wuhu Chengnan Crossing River tunnel project,this paper mainly introduces the reconstruction method and application effect of the mud-water separation equipment in the right line shield tunnel.Through the analysis of the equipment principle and construction process,two-stage transformation measures are proposed for targeted improvement of the two-stage cyclone and other equipment,the amount of waste pulp is greatly reduced,and the tunneling efficiency of the shield machine in the silty sand formation is increased from the initial 8 meters/day to 14-16 meters/day,which greatly improves the tunneling efficiency and obtains significant economic benefits.
silty fine sand stratummud-water separation equipmentsilty fine sand stratumwaste pulp reductioncycloneequipment transformation
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