摘要
当多隧道并行且属于超小净距隧道群时,如何控制掌子面距离成为保证施工安全同时不耽误工期的一项内容.研究结果表明,掌子面之间距离越大,各隧道特别是处于最后施工并位于中间位置的二号隧道位移、应力逐渐减小,但当掌子面距离增大至一定程度时,变化就很小.综合分析,掌子面距离控制在2倍洞径较为合理.
When we face the three tunnels or more than three tunnels with small interval tunnel, how to control the distance of the tunnel face becomes a content to ensure the safety of construction and time. Research results show ： as the distances of the tunnel face increase, the displacement and the stress of the tunnel reduce especially in tunnel number 2 which constructs in the middle place later than other tunnels, but when the distance of the tunnel face increases to a certain degree, changes become smaller. Above all, the distance of the tunnel face set as twice tunnel interval will be reasonable.
出处
《矿业工程研究》
2011年第3期78-80,共3页
Mineral Engineering Research
基金
中国中铁四局科技项目资助项目(09430101002260)
关键词
小净距
三线并行
掌子面距离
优化分析
small clear distance
three lines
tunnel face distance
optimization analysis
