摘要
合理地确定海底隧道顶板厚度是修建海底隧道的关键技术之一.隧道的最小安全顶板厚度在一定程度上决定海底隧道的长度,从而影响海底隧道修建的成本.海底隧道顶板厚度是控制隧道经济性指标的一个重要因素,但是如果隧道顶板厚度太小,在海底隧道施工时,围岩破坏或松动形成导水裂隙带,有可能波及到上部水体,甚至运营后可能发生大量渗水.因此,在决定隧道最小安全顶板厚度时就存在一个优选问题.笔者正是基于此,在综合考虑经济、安全两方面的因素,借助工程选优手段,研究了决策海底隧道的最小安全顶板厚度的方法,为今后海底隧道的顶板厚度的确定提供了思路.
In agreement with the needs of traffic development, the subsea tunnel of China is also projecting. The depth of subsea tunnel rock cover plays an important role in the design of subsea tunnel. The least security coping thickness of subsea tunnel decides the length of subsea tunnel and affects the expense in a certain extent. However, as result of the destroyed and moved wall-rock caused by construction of subsea tunnel , it will possibly affect the instability of the sea water above subsea tunnel and a great deal water seepage during its usage period, if the coping thickness of subsea tunnel is very weak. So, it is necessary to optimize the coping thickness of subsea tunnel. Therefore, this paper tries to consider safety factor and economy factor and researches decision-making method of the least security coping thickness of subsea tunnel by applying the optimized method, which supplies a new way to decide the coping thickness of subsea tunnel.
出处
《青岛理工大学学报》
CAS
2008年第1期14-18,33,共6页
Journal of Qingdao University of Technology
基金
山东省自然科学基金资助项目(Y2005-A03)
山东省教委重点资助项目(G04D15)
关键词
海底隧道
顶板厚度
围岩稳定
经济分析
优化决策
subsea tunnel
coping thickness
wall-rock stability
economy analysis
optimized decisionmaking
