Sublevel caving method without sill pillar is adopted in the south section of Fengshan Copper Mine.
丰山铜矿南缘采区应用无底柱分段崩落法采矿。
The paper is of important instructive importance to reduce loss and depletion by sublevel caving method without sill pillar.
并对今后无底柱分段崩落法降低损失贫化具有重要的指导意义。
The big parameter and multi-subsection of sublevel caving method without sill pillow combines the Caving method with the advanced theoretic and technic.
大参数多分段并行无贫化放矿的无底柱分段崩落法，是当前崩落法先进理论和技术以及工艺的综合。
Based on the similar material simulation and prectical experiment in situ, the movement charactedistic of overburden strata of longwall sublevel caving method has been studied in the paper.
本文用相似材料模拟，现场实测等方法研究放顶煤开采覆岩活动规律。
Because of the mining condition of ore belt of southern edge in Fengshan Copper Mine is more complicated, the originally used sublevel caving method in the production have obvious shortcomings.
丰山铜矿南缘矿带开采技术条件复杂，原采用的无底柱分段崩落法在生产中存在较大问题。
Sublevel caving without bottom pillar is the method of mining used at Huashugou Mine, Jiuchun Iron and Steel Co.
酒泉钢铁公司桦树沟铁矿所用采矿方法是无底柱分段崩落采矿方法。
Because of anciently usually adopting empirical method to determine the structure parameter of non pillar sublevel caving, there are hard to guarantee parameter optimize.
由于无底柱分段崩落法结构参数一直采用经验方法确定，很难保证结构参数最佳，本文分析了放出体和矿石堆体的形态及其影响因素。
It adopt dry filling method in the orebody above -350m level and adopt the method of sublevel caving in the orebody under the level. Exploitation engineering already reach -385m level.
目前- 350水平以上还在采用干式充填法还在出矿，- 350水平以下采用无底柱分段崩落法，已开采到- 385水平。
Analyses factors that affect cover caving ability of roof coal in sublevel caving mining method.
分析了放顶煤开采顶煤冒放性的影响因素。
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。
Whether the sill-free sublevel caving mining method is suitable to break and broken orebody has been being discussed for a long time.
无底柱分段崩落采矿法是否适用于松软破碎矿体，一直是采矿界争论的焦点。
The gray relation degree indicates that the series for adaptability of every mining method are surface mining, sublevel caving mining, block stop mining etc;
灰关联度计算表明，采矿方法适应性排序为：露天开采法、分段崩落法、阶段矿房法等；
The mining scheme and new technology of sublevel filling method cemented by crushed stone and cement slurry, and the production linking up technique to transit from caving method to filling meth...
研究应用了分段碎石胶结充填采矿方法较好地解决了这一问题，介绍该采矿方案和碎？。
The ventilation system provides a new method to realize the safe and efficient mining of high gas longwall mining with sublevel caving.
这一通风系统可为其他高瓦斯综放面安全高效开采提供了一条新的技术途径。
The ventilation system provides a new method to realize the safe and efficient mining of high gas longwall mining with sublevel caving.
这一通风系统可为其他高瓦斯综放面安全高效开采提供了一条新的技术途径。
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