超长距离钢顶管泥浆减阻施工技术

Construction Technology of Slurry Drag Reduction for Ultra-Long Distance Steel Pipe Jacking

摘要:

在北海某排海管工程2 180 m及珠海磨刀门某过海管工程2 329 m超长距离钢顶管施工中，采取分段分站式压浆减阻技术，并针对顶管穿越不同的土层，选用不同的泥浆配比，取得良好的减阻效果。一次性顶进2 000 m，无需启用中继间进行接力顶进，为类似超长距离顶管施工提供参考。

Abstract:

In the construction of ultra-long distance steel pipe jacking of a 2 180-m sea discharge pipeline project in Beihai City and a 2 329-m cross-sea pipeline project in Modaomen, Zhuhai City, the segmented and station-based grouting drag reduction technology is adopted. For pipe jacking through different soil layers, the different slurry ratios are selected, achieving favorable drag reduction effects. There is no need to activate the relay room for relayed jacking if jacking in 2 000 m at one time, which provides valuable reference for the construction of similar ultra-long distance pipe jacking projects.