【摘要】 在深圳市东部供水工程隧洞施工中,在软围岩和断层不能自稳的地段,使用钢支撑和超前管棚做初期支护,个别地段还采用钢支撑混凝土作永久衬砌,取得了较好的效果。文章结合工程实际,探讨了钢支撑在隧洞工程不良地质地段中的使用方法。更多还原

【Abstract】 During construction of water tunnel of East Shenzhen Water Supply Project, steel bracing and advance tubular shed were utilized for initial support at the sections of weak surrounding rock and unstable fault, and steel bracing concrete was applied as permanent lining at specific sections, which achieved good effects. In combination with the engineering practice, methods of utilizing steel bracing at unfavorable geologic sections in tunnel engineering are discussed.更多还原