厄瓜多尔米拉多铜矿废石破碎站深基坑采用深孔挤压爆破法和预裂爆破法开挖,最大孔深10~11 m,主炮孔按平面3 m × 3 m 矩形间距布置,中深孔爆破深度为5~8 m,并将基坑及出渣道范围分为出渣道、基坑北区、基坑南区,依次进行爆破、清渣...厄瓜多尔米拉多铜矿废石破碎站深基坑采用深孔挤压爆破法和预裂爆破法开挖,最大孔深10~11 m,主炮孔按平面3 m × 3 m 矩形间距布置,中深孔爆破深度为5~8 m,并将基坑及出渣道范围分为出渣道、基坑北区、基坑南区,依次进行爆破、清渣和支护作业,整体爆破设计方案,根据实际逐步微调爆破控制参数。此外,为确保爆破施工安全,将以基坑爆破施工点为中心25 m 半径确定为爆破振动最小安全距离。上述方案取得了理想的实践效果,可为采矿工业场地岩质边坡爆破施工提供有益参考。展开更多
By means of researching into sympathetic detonation of blasting detonators in air, the regular patterns are concluded from blasting detonators interaction with the shock loading. The aerial distribution of initiating ...By means of researching into sympathetic detonation of blasting detonators in air, the regular patterns are concluded from blasting detonators interaction with the shock loading. The aerial distribution of initiating ability of detonators looks like a butterfly. The initiating ability mainly consists of shock wave, explosive gases and fliers. But fundamental questions remain. When does shock wave take the leading role? When and how does the explosive gases or the fliers take function? For those questions, there is less quantitative research. Through the theoretic deduction of the overpressure, the energy calculation of fliers and the experiment of sympathetic detonation of detonators, we can learn the sympathetic detonation distances of several kinds of detonators and make an inquiry into the lateral initiating regulations of detonators. So, we can provide the base data for the research into no sympathetic detonation of herd blasting detonators and then control the detonation between them. Then we can make full use of detonators and reduce the frequency of accidents caused by detonators.展开更多
文摘厄瓜多尔米拉多铜矿废石破碎站深基坑采用深孔挤压爆破法和预裂爆破法开挖,最大孔深10~11 m,主炮孔按平面3 m × 3 m 矩形间距布置,中深孔爆破深度为5~8 m,并将基坑及出渣道范围分为出渣道、基坑北区、基坑南区,依次进行爆破、清渣和支护作业,整体爆破设计方案,根据实际逐步微调爆破控制参数。此外,为确保爆破施工安全,将以基坑爆破施工点为中心25 m 半径确定为爆破振动最小安全距离。上述方案取得了理想的实践效果,可为采矿工业场地岩质边坡爆破施工提供有益参考。
文摘By means of researching into sympathetic detonation of blasting detonators in air, the regular patterns are concluded from blasting detonators interaction with the shock loading. The aerial distribution of initiating ability of detonators looks like a butterfly. The initiating ability mainly consists of shock wave, explosive gases and fliers. But fundamental questions remain. When does shock wave take the leading role? When and how does the explosive gases or the fliers take function? For those questions, there is less quantitative research. Through the theoretic deduction of the overpressure, the energy calculation of fliers and the experiment of sympathetic detonation of detonators, we can learn the sympathetic detonation distances of several kinds of detonators and make an inquiry into the lateral initiating regulations of detonators. So, we can provide the base data for the research into no sympathetic detonation of herd blasting detonators and then control the detonation between them. Then we can make full use of detonators and reduce the frequency of accidents caused by detonators.
