深埋长隧道工程开挖的主要地质灾害问题研究

RESEARCH ON THE MAIN GEOLOGICAL HAZARDS OF DEEP LYING LONG TUNNEL

随着我国交通及资源开发工程的迅速发展，深埋长程隧道及深埋越岭隧道的修建越来越多。深埋长隧道由于其埋深大、洞程长，因而修建过程中将会遇到一系列特殊的地质灾害问题。这些问题尽管从形式上看与浅埋隧道工程差异不大，但其产生的地质背景和发生机理却复杂得多，强度和危害性也大得多。在总结国内外数十个深埋长程隧道工程主要地质灾害问题的基础上，对这些地质灾害的发生机理及形成条件进行了分析，提出了相应的预测评价理论。

With the rapid development of traffic engineering and resource exploitation,more and more deep lying long tunnels have been built. In the process of construction, some special geological hazards will be met because of the great depth and long distance. Contrasted to shallow lying tunnels,the geological background and mechanism of the hazards in deep lying long tunnels are more complicated, the intensity and harm are more serious. Based on researches of tens of deep lying long tunnels at home and abroad, the mechanism and formation conditions of the hazards are analysed from some aspects and some theories of prediction and evaluation are also proposed in this paper.