露天矿深孔爆破振动测试与研究

Test and Research on Blasting Vibration of Deep- hole Blasting in Open Pit Mine

为确保矿山爆破施工安全,减少民扰及确定最大单响药量,在现场试验的基础上,根据萨道夫斯基经验公式,用最小二乘法对大量的实测数据进行回归分析,计算出爆破地震波衰减系数α和k值,得出了适合该矿区爆破地震波传播衰减经验公式,并根据该公式计算保护对象安全振速要求的单段最大起爆药量,确定爆破规模,将矿区周边建筑物的振动速度控制在安全范围内。从工程实施的效果来看,研究成果与结论取得了较好的应用,保障了工程爆破顺利完成。

To ensure the safety of mine blasting, reduce the disturbance to residents and ascertain the maximum tolerant explosive quantity of single shot, based on the field test, an analysis of the acquired plentiful practical testing data by least - square analysis is carried out according to Sadaovsky empirical formula, attenuation coefficient a and factors co- efficient K of seismic wave are acquired, and the attenuation empirical formula of seismic wave is obtained for the mine. The max single sound detonator quantity could be calculated by the decay experience formula, then determined the burst size, the vibration of the mining area around the building could be controlled in a safe range of speed. The presented re- search achievements have been better applied in the practical project, and satisfactory results are obtained.