重庆轨道交通大跨度暗挖隧道初期支护技术探索

Exploration of Primary Support Technology of Large Span Mining Tunnel of Chongqing Rail Transit

喷锚支护技术自运用于重庆轨道交通暗挖隧道施工以来,系统锚杆的支护作用一直是业界争论的问题之一。通过对重庆轨道交通某地下暗挖车站初期支护的计算,将计算结果与量测资料进行对比、分析、研究,优化了重庆地区地下暗挖隧道的支护参数。

Since shotcrete and rock bolt support technology were applied to mining tunnel of Chongqing rail transit,the support effect of systematic bolts has been one of problems in the engineering industry.Calculation is conducted to the primary support of a mining station of Chongqing rail transit.The calculation results are compared with the measured data.Through analysis,support parameters of mining tunnel in Chongqing area are optimized.