normal align=center>玻璃硅质原料开采技术条件要求

normal align=center>矿床类型

normal align=center>可采厚度m

normal align=center>夹石剔除厚度m

normal align=center>平均剥采比

normal align=center>露天矿场最小底盘宽度m

normal align=center>露天矿场

normal align=center>爆破安全

normal align=center>距离m

normal align=center>岩类矿床

normal align=center>≥2

normal align=center>＞0.5～1

normal align=center>≤0.5﹕1

normal align=center>≥40

normal align=center>边坡角大于100m时为50～55o；小于100m时为55～60o

normal align=center>一般≥400

normal align=center>砂类矿床

normal align=center>0.5～1

normal align=center>＞0.5

normal align=center>1﹕1

normal align=center> 

normal align=center>30o

normal align=center>