三联隧道围岩大变形的原因与处理技术

Causes and Treatment Technology of Great Deformation of Triple Tunnel Surrounding Rock

隧道围岩大变形指的是围岩在高地应力的情况下出现的一种极端变形破坏情况,属于塑性流动和塑性破坏的范畴,对隧道工程的正常施工有比较大的影响。以实际工程为例,对三联围岩地质情况进行了介绍,并对围岩大变形的原因进行了分析,找出了支护结果出现变形的原因,然后结合实际情况制定了相应的处理措施,保证了隧道工程的顺利开展。

The great deformation of tunnel surrounding rock means an extreme deformation damage of surrounding rock causing under the condition of high ground stress, and belongs to the category of plastic flow and plastic damage, which has the greater impact on the normal construction of tunnel engineering. Taking the practical project as an example, the article introduces the geological situation of triple souring rock,analyzes the cause of great deformation of surrounding rock, finds the deformation cause of support result, and then formulates the relevant treatment measures according to the practical conditions so as to guarantee the smooth construction of tunnel engineering.