【摘要】 膨胀岩易吸水膨胀、失水崩裂 ,其稳定性差。对隧洞的设计、施工和运行将产生综合性的影响。引黄工程南干 7号隧洞 2 895m长的洞段穿过膨胀岩地层。本文介绍了膨胀岩的特性及对引黄工程的影响。更多还原

【Abstract】 The distribution and engineering geologic properties of the swelling rock in No.7 Tunnel of the South Main Line of the YRDP are introduced in this paper,the influence of its swelling,crumbling and poor stability on the YRDP is analyzed,and some corresponding countermeasures are given finally.更多还原