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- Practice shows that shallow hole shrinkage stoping method greatly decreased mining workload,lessened mining time,and increased mining efficiency. 实践证明,改进后大大减少了采切工程量,缩短了施工时间,提高了生产效率,为同类矿山提供了经验。
- 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。
- Bottom Structure Evolvement and Effect of Shallow Hole Shrinkage Stoping System 浅眼留矿法的底部结构演化及其效果
- 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
- Application of Shallow Hole Shrinkage Stoping with No-pillar in Gold Deposit Mining 无底柱浅孔留矿法在某金矿采矿的应用
- Application on Driving Ways of Oblique Long-wall Mining Face in Shallow Hole Shrinkage Stoping 伪斜工作面推进方式在浅孔留矿法中的应用
- 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
- The WHF method,maily,emphasizes,decentral,real,press,effect,ofdeforgings,it has better results in solving of the metallurgical defects such as ingot segregation,central porosity,hole shrinkage. WHF法主要强调锻件的中心压实效应,对于解决因冶炼带来的锭型偏析、中心疏松、缩孔等缺陷有较好的效果,而且针对性强、方便适用,因此被广泛应用于大、中型轴类件的生产。
- When a slot is cut in middle length hole post and stall method with hard ore,it is often used to cut raise or to cut raise and entry. However cutting raise often uses the method of shallow hole. 坚硬矿石内中深孔房柱法切割立槽的开掘,通常使用切割天井拉槽法或切割天井与切割平巷联合拉槽法。
- When I die, I plan to be place an nature in a shallow hole and become fertilizer for a dogwood tree. 我计划死后裸身埋在一个浅浅的坑里,变成一株山茱萸的肥料。
- A small mountain spring ran tinkling down the narrow stone crevices.Many years passed.An egg-sized shallow hole was washed out on the rock. 一股细细的山泉沿着窄窄的石缝叮叮咚咚往下流淌,也不知道过了多少年,竟然在岩石上冲刷出一个鸡蛋大小的浅坑。
- A ****all mountain spring ran tinkling down the narrow stone crevices.Many years passed.An egg-sized shallow hole was washed out on the rock. 一股细细的山泉沿着窄窄的石缝叮叮咚咚往下流淌,也不知道过了多少年,竟然在岩石上冲刷出一个鸡蛋大小的浅坑。
- 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。
- Punch 8 to 12 shallow holes into the tenderloin and stuff them with garlic and rosemary, sprinkle with salt and pepper. 在牛里脊肉刺上8至12个小孔,酿入蒜头及迷迭香,并洒上盐及胡椒。
- By the analysis of forces, the design principle for indexable drills for shallow holes is put forward. 通过对力的分析,提出了可转位浅孔钻的设计原则。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- It is only shallow people who judge by appearances. 只有浅薄的人才会以貌取人。