摘要
随着我国土木工程机械化作业水平的不断提高,机械开挖使用率也大幅度提高,尤其是在隧洞开挖方面,由于掘进机对围岩的扰动小从而大大提高了生产安全性,同时减少了爆破造成的超挖超支护问题。但隧洞施工在机械开挖的同时也受到地质情况、工程结构等限制,出现功效不高,成本较大的问题。以小断面水工隧洞机械开挖为例,介绍了对适应洞型及地质情况的设备选择、施工方法、功效分析及其适应性分析,可供类似工程借鉴。
With continuous promotion of mechanization in civil engineering in China,the utilization of mechanical excavation has increased significantly,especially in tunnel excavation,which greatly improves construction safety owing to small disturbance from the road header to the surrounding rock,reduces over-excavation and over-support caused by blasting.However,the mechanical excavation of tunnels is also restricted by geological conditions and engineering structures,which causes problems such as low efficiency and high cost.Taking the mechanical excavation of a small-section hydraulic tunnel as an example,this paper introduces the selection of equipment,construction methods,efficiency analysis and adaptability analysis that adapt to the tunnel type and the geological condition,and provides a reference for similar projects.
作者
张彬
ZHANG Bin(Sinohydro Bureau 5 Co.,LTD,Chengdu,Sichuan,610066)
出处
《四川水力发电》
2022年第3期83-88,共6页
Sichuan Hydropower
关键词
水工隧洞
机械铣挖
施工技术
适应性分析
黄沙水库灌区
hydraulic tunnel
mechanical milling and excavation
construction technology
adaptability analysis
irrigation area of Huangsha Reservoir
