1) wide-space disposal bore hole
宽孔距布孔
2) wide-space
宽孔距
1.
Recently,the practice improved that using technique of wide-space small burden blasting can improve the rock crushing,low the big crushing rock rate,reduce the secondary crushing cost.
近年来实践表明,应用宽孔距小抵抗爆破技术能改善岩石破碎质量,降低大块率,减少二次破碎成本。
3) large spacing
宽孔距
1.
As the technology of small burden and large spacing loose blasting is used, the area of spacing pat- tern ean be increased, the consumption of hole and explosive can be decreased, the fragmental effect of rock can be improved.
宽孔距岩石松动爆破技术具有增加孔网参数、降低炮孔和炸药消耗、改善破碎效果等优点。
4) blasting of large spacing and small burden
宽孔距爆破
1.
In this paper,the results of blasting are analysised and a new fragmentation mechanism model based on the hypothesis of forming beam for the blasting of large spacing and small burden and the destroy criterion expressed by v P (crack development velocity between blastholes) and v s (crack widening velocity) are suggested.
通过分析爆破试验结果，建立了以成梁假设为基础的宽孔距爆破破碎机理模型。
5) same aperture and distance hole-collocating
等孔径等孔距布孔
6) wide-end blasting technology
宽孔距爆破技术
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条