台阶深孔爆破振动控制

Borehole blasting vibration control of creep mass high slope

对某水电站蠕变体高边坡的台阶深孔爆破振动进行观测和分析,得到考虑高程效应的爆破地震波衰减经验公式.根据该蠕变体高边坡的特点,提出爆破振动控制标准.由经验公式和控制标准,得出蠕变体高边坡新浇混凝土支护区爆破安全控制参量.最后结合该蠕变体高边坡爆破实测,建议了台阶深孔爆破所需要采取的降震措施.从工程实施效果看,该研究成果与结论得到了较好的应用,保障了该工程爆破的顺利完成.

The borehole blasting vibration of the creep mass high slope of a hydropower station is observed, analyzed and processed. The attenuation empirical formula of the blasting earthquake wave is obtained; in which elevation effect is considered. According to features of the creep mass high slope of the hydropower station, its damage standards of the borehole blasting vibration are given. Based on the attenuation empirical formula and damage standards, the blasting safety control parameters of new cast-in-situ concrete of the creep mass high slope are gained. At last, in light of construction characteristics of the creep mass high slope, the control measures of the blasting vibration are proposed. The construction effects of the project indicate that the research achievements of this paper are better applied to the project; and the blasting of the proiect is smoothly finished.