2) shallow-hole mining method
浅眼留矿法
1.
Wall caving and collapse were frequent with shallow-hole mining method,which led to low mining rate and high ore loss rate.
采用浅眼留矿法回采时,采场片帮与垮塌情况严重,上采高度难于达到阶段高50 m,采场回采率低,矿石损失率较大。
3) non-bottom-pillar short-hole stopping ore
无底柱浅眼留矿
4) shrinkage stoping with shallow hole
浅孔留矿
1.
31 $RMB and the amount of gold mine increased by more than 30,000 ton per year with shrinkage stoping with shallow hole and keeping the ore to be left as new mining method.
0 7元/吨 ,改用浅孔留矿法后 ,采矿直接成本降为 2 0 。
5) Short-hole shrinkage method
浅孔留矿法
1.
Short-hole shrinkage method is commonly employed in mining steeply-inclined narrow vein.
对于急倾斜极薄矿脉的开采国内外最常用的采矿方法是浅孔留矿法,实践表明,该法存在人工劳动强度大、矿石贫化率高等缺点。
2.
The paper analysed the characteristics of the existence of ore body and main technological proposes in Longtoushan gold deposit,to propose the technological measures about design and construction about short-hole shrinkage method,thus the ore loss and rock dilution were significantly reduced and ensure safety in production,and the better technological and economic profits were achieved.
本文分析了龙头山金矿矿床开采技术条件特点及主要技术问题,指出应用浅孔留矿法的设计施工技术措施,从而降低矿石损失贫化率指标,确保采矿安全生产,提高矿山企业技术经济效果。
6) shrinkage stoping with short hole
浅孔留矿法
1.
The paper introduced the technological study and improvement based on the shrinkage stoping with short hole in Zhangjiakou Jinyuan Gold Co.
介绍了张家口金圆黄金有限责任公司对原浅孔留矿法进行的技术研究与改进,并在实践中取得了较好的技术指标和经济效益。
补充资料：留
留
留 ①停留，留滞。《灵枢·五变》：“胸中蓄积，血气逆留。”又：“肠胃恶，恶则邪气留止，积聚乃伤。” ②积留，遗留。指剩余而堆积的东西。见“留血”。 ③针术的，今称留针法。即针刺得气后，置针于穴上一定的时间，然后再出针。多适用于虚寒之证。《灵枢·经脉》：“热则疾之，寒则留之，陷下则灸之。” ④泛指积聚、停滞一类的病证。见“留者攻之”。 ⑤当作“流”。见“留溢”。
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