砂层隧道穿越塌方区施工

On construction of sand-layer tunnel through landslide areas

详细介绍了关角隧道进口Ⅱ线工程地质情况、塌方的原因以及穿越砂层隧道塌方区的施工方案,内容包括塌方情况描述、塌方处理和穿越塌方区施工步骤与技术措施。施工实践表明,所介绍的施工方案合理可行,效果良好。

The paper introduces geological circumstances,the reasons for the collapses of the Ⅱ line of Guanjiao tunnel,the construction scheme for the passing through the sand-layer tunnel at landslide areas,including the circumstance description of the collapse,the collapse treatment and the construction steps and technical measures for the passing through the landslide areas,and proves by the engineering practice that the introduced construction scheme is reasonable and feasible with better effect.