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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。
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。
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。
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。
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。
A computer-aided technical management for sublevel caving is established and its structural design, compositions and functions are introduced. 介绍了一种适用于无底柱分段崩落法的计算机辅助技术管理系统的结构设计、系统组成与功能等。
Therefore,different mining methods including sublevel caving,sublevel open stoping with subsequent filling are tried to solve these problems. 采矿方法从充填法改为分段崩落法、阶段崩落法及分段空场嗣后充填法，使采矿方法不断改进和完善，提高了矿山生产能力和矿石回收率。
To simulate the problem,a numerical analysis method,FLAC3D is applied to analysis the depressurization range of sublevel caving method. 应用FLAC3D对分段崩落法的卸压范围进行了数值分析,据此确定出适于卸压的采场结构,由此形成了无底柱分段崩落法开采倾斜矿体的卸压开采方案。
Panluo Iron Mine is of medium size and there are many problems in its production which uses the originally designed sublevel caving in strips. 潘洛铁矿属中型生产规模铁矿山，原设计分条分段崩落法在生产中存在较多问题。
Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution. 无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。
Along with steady development of coal mining technology,fully-mechanized sublevel caving technology has had about ten years in our country. 随着采煤技术的不断发展,综合机械化放顶煤技术在我国成功使用已十年有余。
Underground pressure mostly acts upon the mining accesses and connections when sublevel caving without sill-pillar is used. 无底柱分段崩落法采场地压主要表现在采矿进路及其联络巷道中。
In light of the characteristics of Nonpillar sublevel caving method,Probability integral method is used to predict mining subsidence and modified to improve predicting accuracy. 针对无底柱分段崩落法的采矿特点,把概率积分法引入金属矿山开采沉陷预测中,并通过模型修正提高预测精度。