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1)  Hole layout
炮孔布置
1.
It researches two key skills of pumping water power station underground digging as well as top-arch pouring steel fiber concrete constructing ratio,fixes digging construction plans and optimized hole layout and bursting parameters through digging simulating tests,so as to reduce the damage of rock and quaking effect.
对一抽水蓄能电站地下厂房岩锚梁岩台开挖和顶拱喷射钢纤维混凝土施工配合比两项关键技术进行了研究,通过开挖模拟试验,确定了岩台的开挖施工方案、最佳炮孔布置和装药结构等爆破参数,从而减少对保留岩体的破坏和爆破的振动影响。
2)  Layout of the blasting bores
炮孔布置
1.
Based on the experiment of fan-shaped blasting of sublevel caving method in Beiminghe iron mine,the paper analyzed the factors of affecting to blasting effect,optimized the blasting parameter,and selected logical layout of the blasting bores.
回采炮孔布置形式在很大程度上决定着爆破效果的好坏,从而影响着后续一系列生产的效率。
3)  Blast-hole arrangement
炮孔布置
1.
An example of the application of vee cutting blasting technology in the cutting excavation of a certain highway in Anhui Province is introduced in this paper, and the design of blast-hole arrangement, blasting parameters, initiating network,stemming and safety measures are presented.
以中深孔V型拉槽爆破技术在安徽省滁宁高速公路路堑开挖中应用为例,讨论了V型拉槽爆破的炮孔布置、爆破参数选择、起爆网路设计和爆破安全评估等技术问题。
4)  Drill-hole pattern
炮孔布置型式
5)  blast-hole arrangement
炮眼布置
1.
Computer aided design of the blast-hole arrangement plan in heading tunnel;
掘进巷道炮眼布置计算机辅助设计
2.
According to the ore nature property and actual mining condition in the mine,the problem of high powder ore ratio is solved by modifying the blasting parameter and the blast-hole arrangement,the lump ore ratio and the ore utilization ratio are increased,thus,the mining cost is reduced and economic profit of the mine is increased.
针对我矿矿石的本质特性和开采的实际情况,通过改进采面爆破参数和炮眼布置方式,解决了矿石粉矿率高的问题,有效地提高了矿石块度及煅烧矿石的利用率,降低了采矿成本,增加了企业经济效益。
6)  hole placing
炮眼的布置
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。
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