摘要
隧洞工程施工中 ,弯曲段在开挖阶段的放样都比较困难 ,特别是直径渐变的弯曲段 ,在放样时更难。作者在小浪底工程孔板洞下弯段施工中 ,分析了下弯段的变化规律、建立了弯曲段数学模型、编写了卡西欧fx - 4 5 0 0P计算程序。
It is difficult to set out in bending sections in excavating stage in tunnel project construction,especially in gradual change bending sections,it is more difficult to set out.In paper,writer analyses change regularities of LCB,sets up maths model of bending section ,compiles CASIO fx-4500P calculate program and discusses a new way of setting out in gradual change bending sections using electronic total station instrument on the basis of practice work in Xiaolangdi orifice tunnel project.
出处
《勘察科学技术》
2004年第4期62-64,共3页
Site Investigation Science and Technology
关键词
黄河小浪底
隧洞工程
工程施工
孔板洞
施工放样
Xiaolangdi
orifice tunnel
LCB
gradual change sections
construction setting out
