露天煤矿抛掷爆破振动效应的研究

Study on the Vibration Effect of Sling Blasting in an Open Coal Mine

通过对黑岱沟露天煤矿爆破的振动测试,对高台阶抛掷爆破的振动特点进行了分析。通过对爆破地震频谱的分析,发现爆破振动主频率较低,爆破地震持续时间接近3 s,并指出黑岱沟露天煤矿在此条件下爆破是安全的。

Through blasting vibration testing in Heidaigou open coal mine, vibration characteristics and frequency chart in high step sling blasting are analysed. It is discovered that blasting vibration main frequency is low and blasting vibration duration is near to 3 s, so the blasting is safety in Heidaigou coal mine.