宽孔距小抵抗线多排孔微差爆破技术

An Example of Wide-space Millisecond Multiple-row Holes Blasting

宜春钽铌矿露天深孔爆破以 4.5 m× 1.8m的宽孔距、小抵抗线的孔网参数取代原来的 2 .0 m×2 .2 m的孔网参数 ,进行多排孔微差爆破 ,取得了明显的经济效益。

The holes pattern of wide space,small burden in 4.5 m×1.8 m were used to perform the multiple row holes millisecond blasting.The remarkable economic benefit can be achieved.