巷道及边坡工程中的膨胀岩灾害与防治

Disasters Caused by Swelling Rock in Tunnel and Slope Engineering and Controlling Treatments

分析了膨胀岩的胀缩机理及影响因素,总结了近几年的理论研究成果。着重论述了巷道和边坡工程中的膨胀 岩所造成的灾害形式,通过分析诱发灾害的机理,有针对性地提出了一些防治措施。

Swelling rock is a common geological medium encountered in geotechnical engineering, of which the swelling-shrinkage mechanism is very complicated. The swelling-shrinkage mechanism is analysed in the paper with stress laid on the disaster caused by swelling rock in tunnel and slope engineering and the controlling treatments, which include the support of tunnel with soft wall-rock, the reinforcement of tunnel with local deformation, the treatment of tunnel floor heave and some treatment methods for slope engineering, such as dewatering, support, truncation and building up platform. It is suggested to reduce activity and increase mechanical stability of structure in tunnel and slope engineering, applying integrated method of controlling swelling and adapting swelling.