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- According to the theory and method of particle flow code in two dimensions (PFC2D), the block caving law of natural caving mining method was investigated. 以自然崩落采矿法为研究对象,利用二维颗粒流数值模拟(PFC2D)的原理和方法,研究了自然崩落法矿体崩落规律。
- natural caving mining method 自然崩落法
- The mining method which will be used at Hebei Fanshan Phosphorus Mine is a new one combining the sublevel caving mining method with sill pillar and sublevel caving mining method without sill pillar. 河北矾山磷矿采矿方法为有底柱和无底柱采矿法相结合的一种新的采矿法,其采场结构参数选取正确与否,将直接影响该方法优越性的发挥。
- Pillar-free sublevel caving mining method 无底柱分段崩落采矿法
- little segment caving mining method without sill pillar 小分段无底柱崩落采矿法
- Feasibility of strip mining method applied to coal caving mining under villages 条带法实现村庄下放顶煤开采的可行性
- As the first successful introduction of natural caving method in domestic nonferrous metal mine,Tongkuangyu Mine increases production capacity and reduces production costs. 铜矿峪矿作为国内第一个成功引进自然崩落法技术的有色金属矿山,提高了矿山生产能力,降低了生产成本。
- Application of Non-pillar Sublevel Caving Mining Method in Chadian Phosphorus Mine 无底柱分段崩落采矿法在汉中茶店磷矿的应用
- There is a natural cave in the side of the hill. 山坡上有一个天然的洞穴。
- Study of the automatic detector for measuring the top coal thickness in bulk - caving mining method 放顶煤顶煤厚度自动探测仪的研究
- Prediction Study of Caving Space in Block Caving Mining Method by Magnetic Strength Change Measured in Field 利用磁铁矿磁场变化预测崩落空间的现场研究
- Preliminary Discussion on Seam Infusion in High-gassy Medium-thickness Seam Face with Caving Mining Method 高瓦斯中厚煤层放顶煤工作面煤层注水初探
- Keywords Block caving mining method;Middle-thich orebody;Orebody cavability;Undercut;Mining;Oredrawing; 自然崩落采矿法;中厚矿体;矿石可崩性;拉底;回采;放矿;
- Prevention and treatment to spontaneous combustion in isolated long wall face with fully mechanized top-coal caving mining method 孤岛综放工作面煤炭自燃的防治技术
- The caving difficulty research of the natural caving method has undergone the development process of comprehensive evaluation from single factor to multi-factor and from determinacy to indeterminacy. 自然崩落法可崩性研究经历了从单因素到多因素、确定性向非确定性综合评价的发展过程。
- There were a few natural caves on the reverse solpe. 背面坡上有几个天然的山洞。
- Cut-off grade method has been used to control the ore drawing in non-pillar sublevel caving mining both in and outside China. 采用无底柱分段崩落采矿法,国内外一直采用截止品位放矿法来控制出矿。
- There were a few natural caves on the reverse slope. 背面坡上有几个天然的山洞。
- Rock, large and small, scattered in hundreds of natural caves. 岩壁上,散布着大大小小上百个天然洞穴。
- caving mining method 崩落采矿法