深孔预裂爆破技术在泽城水电站溢洪道边坡开挖中的应用

摘要

The rock volume to excavate spillway of Zecheng Hydroelectric Station Project is about 149×10^4 m^3.The construction period is pressing, its excavation intensity is big, and the quality demand for excavating side slope is high. In order to ensure the stability of side slope, and to quicken construction pace, the deep hole presplit blasting technique is used. In the paper the technical parameters, construction method, blasting technique and blasting effect of this technique are introduced.%山西泽城水电站溢洪道工程，石方开挖量约149万m^3，其工期紧、开挖强度大、边坡质量要求高。为确保边坡稳定，加快施工进度，采用了深孔预裂爆破技术。文中介绍了边坡深孔预裂爆破的技术参数、施工方法、起爆技术及爆破效果。