【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。更多还原

【Abstract】 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.更多还原