贵州洪家渡左坝肩垂直高边坡爆破技术

Blasting Technigue of Vertical High Slope at Left Abutment in Guizhou Hongjiadu Hydropower Station

结合洪家渡电站左坝肩边坡爆破工程,介绍了复杂条件下高陡边坡预裂爆破和梯段爆破的质量控制及施工安全技术措施。该工程实践证明:预裂孔钻进精度是预裂爆破效果的关键,单孔单响微差顺序起爆网路是临近边坡梯段爆破质量的重要保证。

Combining the blasting of the left abutment slope in Guizhou Hongjiadu hydropower station, the quali- ty control and safety technigue of presplit and delay blasting at high-steep slope was introduced on complex condi- tion. This practice shows that the precision of hole drilling is key to presplit blasting, and hole by hole delay blasting is important to slope nearby.