Abstract: Based on the in-situ measured data of the first pipe-jacking of Xiamen Xiangan subsea comprehensive pipe gallery project, the correlation between the jacking force Fp, the average resistance friction fk and the jacking distance L were studied, so as to refine the value of the average resistance friction fk in the second pipe-jacking. The results show that: fk has a large absolute value and fluctuates frequently when L=0~20 m; fk≈3.0 kPa when L＞30 m; when L＞380 m, and fk＜2.0 kPa, fk oscillates up and down at 2.0 kPa and never exceeds 3.0 kPa. When the construction stops, fk increases significantly in the range of 2~ 5 m of recovery jacking and then it quickly falls back to normal level. The research results provide the basis for the average friction value of the second pipe-jacking and the layout of the relay wall.

Key words: tunnel engineering, submarine engineering, super-long distance, large diameter pipe-jacking, jacking force, frictional resistance, relay wall

摘要： 基于厦门翔安某海底综合管廊工程先行线顶管的实测顶力，分别研究了总顶力Fp、平均摩阻力fk与顶程L的相关关系，以细化后行线顶管的平均摩阻力fk取值。结果表明：当顶程L=0~20 m，fk绝对值大、波动频繁；当顶程L＞30 m，fk≈3.0 kPa；当顶程L＞380 m，fk＜ 2.0 kPa，并全区间fk在2.0 kPa上下震荡，且均未超过3.0 kPa；当施工停滞时，fk在恢复顶进的2~5 m范围内显著增大，随后迅速回落至正常水平。研究结果为后行顶管的平均摩阻力取值和中继间布置提供了依据。

关键词: 隧道工程, 海底工程, 超长距离, 大口径顶管, 顶进力, 摩阻力, 中间继