大伙房输水工程TBM3施工段施工风险评估

Construction Risk Assessment on the TBM-3 Construction Section of Dahuofang Water Conveyance Project

大伙房水库输水工程TBM3施工段查梁子段,地质条件较为复杂,TBM能否顺利通过存在较大的风险,为此对工程提前进行了风险评估和施工预案准备。结果表明,在对围岩软弱破碎带、断层及含水地带采取相应的处理措施后,采用TBM施工比钻爆法更能适应不良地质条件下不同围岩的掘进要求。

The Chaliangzi section of TBM-3 construction section of Dahuofang water conveyance project has complex geological conditions so that TBM construction has big risks. For this reason, the risk assessment and construction pre-scheme preparation on this project have been carried out. The results showed that after some treatment measures has taken on the soft and crashed zone, faults and water-bearing zone, TBM construction is more suitable to the advance requirements in different surrounding rocks with poor geological conditions than drilling-blasting method.