Supporting structure for tunnel intersection under unfavorable geological conditions

The utility model discloses a supporting structure for tunnel intersections under unfavorable geological conditions, which comprises a steel structure portal and a steel arch, the steel structure portal is arranged at the position of a main tunnel opening, the steel arch is arranged at the position of an adit, one end of the steel arch is located on a solid foundation of the adit, and the other end of the steel arch is arranged on the steel structure portal of the main tunnel. And meanwhile, the top of the steel structure door frame is locked through the overhead anchor rod. The utility model is suitable for excavation and support construction of tunnel intersections under unfavorable geological conditions. 本实用新型公开了一种用于不良地质条件下隧洞交叉口的支护结构，它包含钢结构门架与钢拱架，钢结构门架设置于主洞洞口位置，钢拱架设置于支洞处，一端坐落于支洞坚实的基础上，一端设置于主洞钢结构门架上，并与钢结构门架进行焊接牢固，同时顶部采用天锚锚杆进行锁定。本实用新型适用于不良地质条件下隧洞交叉口的开挖支护施工。