摘要
强膨胀岩在深埋高地应力作用下,经过应力的重新分布,会对隧道结构产生强大的"膨压"作用。以被称为"西南第一难隧"的四角田隧道为施工对象,从隧道开挖断面选择、初支、二衬、监控测量等方面,结合"新奥法"设计理念,阐述了高地应力作用下强膨胀岩隧道施工技术。是"新奥法"灵活运用的一个展现。
After a tunnel is excavated, the stress distribution of high-expansion wall rock should be changed, thus pushing the tunnel structure. Combined with the construction of Sijiaotian Tunnel which is the most formidable in the south-west section of China, the optimized construction technique is introduced here along with the excavation section＇s choice, initial supporting, secondary supporting and monitoring measurement using NATM.
出处
《水利与建筑工程学报》
2009年第3期116-119,共4页
Journal of Water Resources and Architectural Engineering
关键词
高地压应力
强膨胀性围岩
隧道
施工
high ground compression stress
high-expansion wall rock
tunnel
construction
