系列化泥水平衡顶管设备技术

The Series Technology of Slurry-balance Pipe Jacking Equipment

摘要: 随着城市地下管线“旧管改造”与“新管扩建”项目日益增加，受城市交通、环保的制约，不允许“拉链”式施工，泥水平衡顶管施工的需求量越来越大。由于各种管线的规格不一，同一顶管施工段出现多种管径，一种管径只能匹配一套顶管设备，导致投入成本增大，施工完后设备闲置率高。为提高顶管设备使用率，系列化顶管设计成为当前顶管施工行业重点研究之一。管径的变化对设备产生的影响主要有开挖直径、动力、泥浆输送等配置变化。通过计算分析，可在关键部件不变的情况下，更换刀盘、壳体便可实现管径的匹配，所投入的工期较短、成本较低。

Abstract: With the increasing number of projects for “old pipe reconstruction” and “new pipe expansion” of urban underground pipelines and constrained by urban traffic and environment, no zipper construction was allowed, and more and more slurry balance pipe jacking constructions were needed. For different sizes of various pipelines, there existed pipelines with various kinds of diameters, which would caused a cost increase as one pipe diamter only needed to match one set of jacking equipment, so high idle rate of equipment was induced after project completion. To improve the utilization rate of pipe-jacking equipment, the application of series pipe jacking equipment became one of key researches in pipe jacking construction industry. The major influence induced by pipe diameter variations on the equipment includes the changes of excavation diameter, power and slurry transportation. Calculation indicates that in the case of no changes of major components, the matching of pipe diameters can be implemented by changing tool pan and shell, which only need shorter working period and low cost.