小湾水电站高陡边坡开挖爆破试验  

BLASTING TESTS FOR EXCAVATION OF HIGH AND STEEP SLOPES AT XIAOWAN HYDROPOWER STATION

作　　者：刘美山[1] 余强[2] 张正宇[2] 赵根[1] 

机构地区：[1]中国科学技术大学,合肥230027 [2]长江科学院,武汉430010

出　　处：《工程爆破》2004年第3期68-71,共4页Engineering Blasting

摘　　要：小湾水电站开挖区地形、地质构造复杂,边坡高而陡。深孔大区爆破规模大,可能会影响边坡的安全,需要通过试验确定合理的开挖爆破方案和爆破参数。试验结果表明,采用垂直于边坡方向上的分区爆破方案,可以彻底消除爆碴压死现象。在全面分析试验结果的基础上,推荐了能确保高陡边坡安全的爆破参数以及爆破震动控制标准。There are varied topography and geologic structures and excavated slopes are high and steep at (Xiaowan) Hydropower Station.Because large-scale deep-hole blasting has a potential influence on the safety of high and steep slopes,the practical tests have to be conducted to determine a reasonable excavation scheme and blasting parameters.The test results show that the phenomena of broken-rock dead-press can be completely eliminated when the zonial blasting scheme is used.On the basis of a full analysis on the results of blasting tests,the blasting parameters and blasting vibration criterion are recommended to ensure the safety of the high and steep slopes.

关 键 词：岩石开挖 深孔爆破 边坡稳定 爆破试验 

分 类 号：TV542[水利工程—水利水电工程]