复杂条件下纵向曲线顶管穿越江河施工技术  

The construction technology of composite stratum vertical curve pipe jacking

作　　者：王乐 郑娜 李博 Wang Le,Zheng Na,Li Bo(China Petroleum Pipeline Bureau No 4 construction coMPany, Langfang Hebei 065000, Chin)

机构地区：[1]中国石油管道局工程有限公司第四分公司,河北廊坊065000 [2]中国石油管道局工程有限公司东南亚事业部,河北廊坊065000

出　　处：《非开挖技术》2018年第2期51-55,共5页China Trenchless Technology

摘　　要：采用顶管法穿越江河一般均选择地质较好、水压较低的直线顶进方式施工，针对大坡度纵向曲线顶管穿江施工国内目前还没有先例。富春江顶管隧道全长658．05m，施工水压高、坡度大、穿越地层复杂。通过采用具有破岩能力的泥水加压平衡顶管设备、配置有特殊密封的大行程组合式中继间、润滑效果良好的自动润滑注浆系统和陀螺导向系统等相关技术实现了复合地层14．53％坡度的“V”字型纵向曲线穿江顶管隧道的贯通。该项目的顺利实施为我国在复杂条件下的顶管施工开拓了新的设计理念并积累了相关施工参数和经验。Top line by pipe jacking crossing rivers generally choose geological is good and the water pressure is low in construction, for high gradient vertical curve pipe jacking crossing river construction in China there is no precedent. The Fuchun River pipe jacking tunnel length of 658.05 meters, the construction of high pressure, large slope, through the formation of complex. By using a rock breaking capacity of slurry pressure balance pipe jacking equipment, configuration there is special seal of large stroke combined relay, good lubrication effect automatic lubrication grouting system and of big drop curve tunnel measurement of gyro guidance system related technology to achieve the composite formation ＂V＂ shape vertical curve of wear River pipe jacking tunnel through. The project＇s smooth implementation in our country under the complex conditions of pipe jacking construction opened up a new design concept and relevant construction parameters and experience accumulated.

关 键 词：纵向曲线 复杂条件 大坡度 穿江顶管 

分 类 号：U456.31[建筑科学—桥梁与隧道工程]