您要查找的是不是:
- Abstract: The cause for blasting toes in open stope of Tiegukeng mine was analyzed, the corresponding modification measures were proposed and the blasting effect of the stope were improved. 文摘:对铁古坑矿露天采场爆破产生根底的原因进行了分析研究,提出了相应的改进措施,使采场爆破效果得到了改善。
- This paper introduced the applocation of the open stope method of blast transport with artificial pillars in the mining of inclined and extra-narrow gold vein, and made an evaluation of that method. 本文论述人工柱爆力运搬空场采矿法在倾斜极薄金矿脉的应用,并对该法进行评价。
- In open stopes the ground above the stope will support its own weight.So the stope is shaped like a series of rooms divided by walls or supported by pillars of ore. 空场回采工作面利用采场上方的岩层支撑自身的重量,所以采场被切割成一系列的由矿壁分隔或用矿柱支撑的峒室。
- backfill mining method of open stope in one time 空场嗣后一次充填采矿法
- sub-level open stope succeed by fill 分段空场嗣后充填法
- Narrow sublevel open stope method 窄分段分采空场法
- The experimental study of sublevel open stoping with tail filling and pre controlling of roof was introduced. 介绍了河东金矿预控顶分段空场尾砂充填采矿法试验研究。
- Datuanshan XI #2 orebody at shizishan copper mine is a deep large size orebody,mined by the sub level open stoping method. 狮子山铜矿大团山XI%232矿体系深部厚大矿体,采用分段空场法开采。
- Therefore,different mining methods including sublevel caving,sublevel open stoping with subsequent filling are tried to solve these problems. 采矿方法从充填法改为分段崩落法、阶段崩落法及分段空场嗣后充填法,使采矿方法不断改进和完善,提高了矿山生产能力和矿石回收率。
- HU Ji-ping.A case study of modern underground mining methods (IV):sublevel open stoping with draw points on footwall [J].Foreign Metal Mining Magazine,1990(9):40-43. [4]胡际平.;现代地下矿山采矿方法典型实例 (八)--下盘漏斗分段空场采矿法[J]
- Pea pods burst open when overripe. 豌豆过熟就会爆裂。
- Open tender for purchasing power transformer. 公开招标购买电力运输设备。
- We bivouacked on the open plain. 我们在开阔的原野上露营。
- Elimination methods of blasting toes in open stope of Tiegukeng mine 铁古坑矿露天采场爆破根底的消除方法
- Thank you. How long will this offer be open? 谢谢。这个报价的有效期多长?
- Open the shutter and see what the weather is like. 打开百叶窗,看看外面的天气如何。
- The fresh air blew in from the open window. 新鲜空气从开着的窗户吹进来。
- The shop is open from this day onwards. 该店从今天起开始营业。
- Please open a window to allow the air to circulate. 打开窗子让空气流通。
- Keywords medium-thickness broken orebody;sublevel open stope method;cutthrough; 中厚破碎矿体;分段空场采矿法;切割槽;