【作者】 何本国； 张志强； 朱永全；

【Author】 HE Ben-guo~1 ZHANG Zhi-qiang~1 ZHU Yong-quan~(1,2) (1,School ofCivilEngineering,ChengduSouthwest Jiaotong University,Chengdu 610031 2,School of Civil Engineering,Shijiazhuang Railway Institute,Shijiazhuang 050043,China)

【机构】 西南交通大学土木工程学院； 石家庄铁道学院土木工程分院；

【摘要】 随着我国大规模铁路建设的展开,建设条件也更加复杂。在高水压隧道修建过程中,开挖后围岩在地下水渗流作用下能否稳定和作用在隧道结构(衬砌)上水压力的大小是两个关键性的问题。在隧道防排水设计中采用"堵水限排"的准则,既减少了作用在衬砌背后的水压力,又不致因大量无限制排水对地表环境造成难以弥补的破坏。因此,在确保隧道结构安全情况下如何确定排水量,就成为隧道设计急待解决的问题。本文以等效岩体水力学参数将其概化为等效连续介质模型为基础,研究在确保结构安全的前提下,以石板山长大隧道为例,确定其排水量基准。以期研究隧道排水量从定性到定量提出一种新的方法,对类似隧道及地下工程具有借鉴参考价值。更多还原

【Abstract】 With the development of our country cosmically railway construction,the conditions of construction are much more complicated.Whether surrounding rock is stable after it is excavated and how much water pressure acting on tunnel structure are two key problems when tunnel is subject to high hydraulic pressure.The rule of "limited drainage" is adopted,and hydraulic pressure acting on lining reduces.What is more,destruction of ground surface circumstance is avoided when ground water is infinitely drainaged.As a result,the method of infinitely drainage discharge determination is becoming more and more important,under the condition of tunnel structure safety.Based on equivalent continuous medium model for equivalent hydraulics parameters of rock mass, and Shi Ban-shan tunnel is done for an actual example in this paper.It discharge norm is determined.It hopes that a new method is put forward for tunnel discharge,but also can act as reference for similar tunnel and underground engineering.更多还原