摘要
为解决硬岩顶管机在超长距离隧洞施工中面临的触变泥浆异常流失、集渣、返渣以及主顶顶推力分散造成顶推力不足等难题,依托河南省汝阳县前坪供水3#隧洞施工项目,设计、研发机械化非开挖设备硬岩顶管机,对协同联动助推系统、封浆挡渣减阻系统、泥水环流系统和收渣系统等关键技术进行研究;通过分析试验数据,构建实际顶推力模型。结果显示:1)该设备在不超过最大负荷16000 kN条件下,能够满足单轴抗压强度R_(c)>195.93 MPa的破岩能力;2)在1535 m隧道施工过程中,仅开启协同联动装置和2、3号中继间,即可满足隧道顶进施工所需的顶推力。
When a hard rock pipe jacking machine bored in an extra-long tunnel,phenomena of abnormal loss of thixotropic slurry,accumulation of debris,backflow of debris,and main thrust force dispersion-caused insufficient jacking force occurred.A case study is conducted on the#3 tunnel of Qianping water supply project in Ruyang,China,and a mechanized trenchless equipment,a hard rock pipe jacking machine,is designed and developed.Key technologies of coordinated linkage booster system,slurry-sealing device,debris collection system,and mud-water circulation system are analyzed.By analyzing the test data,a real jacking force model is established.The results show that:(1)Under a maximum load of no more than 16000 kN,the rock-breaking capacity of the equipment meets the requirement of uniaxial compressive strength R_(c)>195.93 MPa.(2)The coordinated linkage device and the#2 and#3 relay chambers of the equipment are activated in a 1535 m-long tunnel,reaching required jacking force for tunnel jacking construction.
作者
王盟盟
范磊
孙英杰
陈家浩
WANG Mengmeng;FAN Lei;SUN Yingjie;CHEN Jiahao(China Railway Engineering Equipment Group Co.,Ltd.,Zhengzhou 450016,Henan,China)
出处
《隧道建设(中英文)》
北大核心
2025年第S1期351-360,共10页
Tunnel Construction
关键词
超长距离隧洞
硬岩顶管机
协同联动助推装置
封浆装置
收渣系统
泥水环流系统
extra-long distance tunnel
hard rock pipe jacking machine
synergistic linkage booster
slurry-sealing device
debris collection system
mud-water circulation system
作者简介
第一作者:王盟盟(1993-),男,陕西商洛人,2018年毕业于兰州交通大学,土木工程专业,本科,工程师,主要从事隧道掘进机设计与制造的项目管理工作。E-mail:271034145@qq.com。
