杨自强1Yang Ziqiang 1,  胥海洋1Yang Ziqiang 1, 文渊2Wen Yuan 2

(1.中交二公局第四工程有限公司，河南省洛阳市  471000；

2.河南理工大学土木工程学院，河南省焦作市  454003)

（1.CCCC-SHEC Fourth Highway Engineering Co., Ltd，Luoyang 471013, Henan, China;

2.School of Civil Engineering, Henan Polytechnic University，Jiaozuo 454003, Henan, China)

摘要：高海拔寒区隧道裂隙岩体的冻胀危害着隧道的使用寿命，掌握寒区隧道围岩冻胀的基本规律十分重要。本文提出了寒区隧道中的低温裂隙岩体在冻融循环作用下的变形规律和冻胀力的产生机理；分析了冻胀力大小的影响因素，总结了冻融过程中裂隙水的迁移机制的研究现状。研究结果表明：冻胀力的大小与岩体力学性质、围岩初始含水量、冻结温度、围岩裂隙的几何形态和空间位置有关。

Abstract: The freezing and swelling of fractured rock in tunnels in cold region with high altitude endangers the service life of tunnels, and it is important to grasp the basic laws of freezing and swelling of tunnels in cold region rock enclosures. This paper presents the deformation law of low-temperature fractured rock in tunnels in cold region under the action of freeze-thaw cycle, the mechanism of frost heave force generation; Analyses the factors influencing the magnitude of the frost heave force and summarize the current research status of the migration mechanism of fractured water during the freeze-thaw process. The research results show that the magnitude of the frost heave force is related to the mechanical properties of the rock mass, the initial water content of the surrounding rock, the freezing temperature, the geometry and spatial location of the surrounding fissures.

关键词：寒区隧道；冻胀力；冻胀机理；影响因素；

Key words: Tunnels in cold region; Frost heave force; Frost heave mechanism; Influencing factors