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- Many years of production practice hade revealed some problems with the original sublevel caving system in the southern mineralized zone of Fengshan Copper Mine. 丰山铜矿南缘矿带原设计采用无底村分段崩落法开采,经多年生产实践表明该法存在很多问题。
- STUDY ON SUPPORTING TECHNOLOGY OF ROADWAY ALONG GOB AREA IN ASOFT AND THICK COAL SEAM WITH FULLY-MECHANIZED SUBLEVEL CAVING SYSTEM AND ITS APPLICATION 软煤层综放沿空巷道支护技术研究及其应用
- sublevel caving system 分段崩落采矿法,分段崩落开采法
- DISTRESSING MAINTENANCE ANALYSIS ON ROADWAY OF LARGE DEFORMATION IN SOFT ROCKS WITH PILLARLESS FULLY-MECHANIZED SUBLEVEL CAVING SYSTEM AND ITS APPLICATION 无煤柱综放开采大变形软岩巷道卸压维护分析及其应用
- Sublevel caving without sill pillar is used in Xishimen Iron Mine. 西石门铁矿采用无底柱分段崩落采矿法开采。
- As a result,the new scheme of sublevel caving with footwall drifts,is raised. 为此,提出自放顶、设回收进路的无底柱分段崩落法新方案,实施后成效显著。
- It is key problem to raise the top coal recovery rate of the fully mechanized sublevel caving mining. 提高顶煤放出率是综放开采的一个重大课题,预注水弱化顶煤是解决这一问题的有效方法之一。
- The area contains vast underground cave systems. 这个地区拥有庞大的地下洞穴系统。
- Non-pillar sublevel caving may be used in the mining of gently inclined medium thick orebody when footwall cutting technology is adopted. 在采用下盘切岩工艺后,无底柱分段崩落法可以在缓倾斜中厚矿体中应用。
- With the increase of the depth of coal seams mined, rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining. 摘要随着煤矿开采深度增加,综放开采回采巷道易发生冲击地压危害。
- Using hydraulic supports in heavy grade longwall face with sublevel caving,anti-topple and antiskid are the key factors. 在大倾角倾斜煤层进行综放开采,支架的防倒、防滑成为决定放顶煤开采成功与否的关键。
- 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。
- Through the quantitative analysis about base cracks of sublevel caving hydraulic supports,some useful measures were taken, effect is well. 通过对放顶煤支架底座开裂原因作定性定量分析,提出了合理的修复措施,修复后,使用效果很好。
- The measures for reduction of oes losing and degrading are described based on the sublevel caving practice in Hujiayu Copper Mine. 根据胡家峪铜矿的有底柱崩落法实践,探讨降低矿石损失和贫化率的有效途径。
- Cenotes are created when limestone in the cave system erodes and the roof collpases, forming a water-filled sinkhole. 当洞穴系统内的石灰岩发生腐蚀而且顶部开始下沉的时候,就形成了盛满湖水或河水的灰岩坑。
- As a result,the current sublevel caving operation practice,the management and operation experiences and the existing mechanical equipme... 使矿山现行的无底柱分段崩落法作业习惯、管理操作经验和原有的机械设备能得到充分利用,提高了矿石回收率,增强了生产的安全性。
- The original block caving system with floor pillar exists many effects,such as development work large,constraction difficult,production efficiency lower and ore loss great. 原采用有底柱崩落法底板漏斗方案,存在采准工程量大、施工困难、生产效率低和矿石损失贫化大等问题。
- Due to problems of the current sublevel caving hydraulic supports,a low and light-duty integrated caving hydraulic support is developed. 分析了现有低位放顶煤液压支架存在的问题,提出了一种新型轻型低位放顶煤液压支架。
- No longer slithering, a snake skeleton lies silent in Belize's Chiquibul Cave system. 一条蛇骨架再也不能滑动了,它静静地躺在伯利兹的奇逵布洞系里。
- The paper is of important instructive importance to reduce loss and depletion by sublevel caving method without sill pilla... 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。