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- short shrinkage method 浅孔留矿法
- As a result,the short hole shrinkage method with flat bottom structure was employed to mine the stope firstly,then stoping ore pillar by medium length hole caving method. 后沟金矿采用平底结构浅孔留矿法先采矿房,后用中深孔崩落法回采矿柱,经两年多的生产实践,取得较好的技术经济指标。
- The feasibility of which short-hole shrinkage method is used for mining of low-grade and submarginal ores in Huanren Mine is demonstrated in this paper. 论证了采用浅孔留矿法对桓仁矿北岔区的低品位矿及表外矿进行综合回收的可行性。
- The shrinkage method is a kind of the open-stope method, Which has many obvi-ous advantages, Such as, simple technology, low cost and high labour productivity , etc. 留矿法是空场采矿法的一种,空场采矿法具有工艺简单、成本低、劳动生产率高等突出优点。
- The numerical experiments show that the proposed method can significantly raise SNR, decrease MSE and preserve the shape of signal better than the original wavelet shrinkage method. 数值仿真表明,与小波阈值收缩方法相比,该方法在信噪比和均方差指标上都有明显的提高,并能很好地保持信号的形状。
- The shrinkage method and the cut wall filling method were used to mine the steep orebody with a high grade in Dashuiqing gold mine, which resuled in greater dilution and loss as well as the unsafe. 大水清金矿曾用留矿法、削壁充填法开采高品位急倾斜矿体,贫化、损失率较大,且存在不安全因素。
- Application of Short Hole Shrinkage Method in Gently Inclined Thick Ore Body 浅孔留矿法在缓倾斜中厚矿体中的应用
- Your work falls short of my expectations. 你的工作未达到我的期望。
- Our escape was little short of miraculous. 我们能逃脱简直是个奇迹。
- Study on Advancing Form of Working Face with Shrinkage Method 留矿法工作面推进形式的研究
- Exploration on Stoping Technology of Short-hole Shrinkage Method 浅孔留矿采矿法回采工艺技术探讨
- In the short term, the medicine may not be very effective. 从眼前来看,这药可能疗效不是很大。
- The hope of a short war went glimmering. 战争无望在短期内结束。
- Nothing short of this could mend the case. 不这样就不能挽回局面。
- Short skirts are no longer in vogue in Britain. 在英国,短裙现在不流行了。
- I'm a little bit tired. Let's take a short rest. 我有点累了。让我们休息一会儿。
- Of this breed we can make short shrift. 这个品种,我们能很快解决。
- Go and get some more oil so we don't run short. 去多弄些油来以免到时候用光了。
- Application of the Primary Filling System Following the Short Hole Shrinkage Method in Fengning Silver Mine of Hebei Province 浅孔留矿嗣后一次充填采矿法在河北省丰宁银矿的应用
- I am able to pick you up on the short wave radio. 我能用短波收音机收听到你的信号。