摘要
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.
出处
《爆破》
CSCD
2008年第1期69-73,共5页
Blasting
关键词
露天煤矿
高台阶抛掷爆破
爆破振动
主频率
open coal mine
high step sling blasting
blasting vibration
main frequency