东掌隧道塌方的成因及处理办法

摘要

通过对东掌隧道地质条件及围岩类别的判定,分析了隧道塌方的原因,提出了塌方处理方法,调整了掘进方案,控制了围岩的变形和松弛,确保了掘进施工的安全进行。%Through identifying Dongzhang tunnel geology condition and surrounding rock catogery,the paper analyzes causes of tunnel landslide,puts forward landslide treatment method,and adjusts drilling scheme.As a result,it controls the deformation and relaxation of surrounding rock and guarantees drilling construction safety.