The ore dilution rate depends on the ore drawing parameters.
矿石贫化率取决于放矿参数。
The vibrating ore drawing technique is being popularized presently in many mines in our country.
振动放矿技术正在我国许多矿山推广。
Applying this new technique to ore drawing, it is both safe and favorable to raise index of ore drawing.
该技术用于采场落矿，既安全，又有利于提高采场落矿指标，对类似矿山有实际参考价值。
Based on the technical and economical index, an optimal decision for the cutoff grade of ore drawing is presented.
在获取矿石技术经济指标的基础上，对截止放矿品位进行了优选政策。
Air leak and dust pollution in ore drawing through long pass in underground mine threaten the underground prodution safety.
地下开采矿山高溜井卸矿过程中的漏风及粉尘污染威胁矿山井下的安全生产。
Taking Jingtieshan Mine as an example, the peper deals with several problems with applying non-dilution ore drawing mw thod.
以镜铁山矿为例研究了无贫化放矿方式在矿山应用的若干问题。
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。
This paper discusses the law of the ore drawing about Sublevel Caving Mining, and analyzes the reasons for the dilution and loss.
探讨了无底柱分段崩落法放矿规律，分析了造成损失贫化的原因。
There are two kinds of hindrances to cohesive ores during ore drawing. One of them is stable stick arch and the other rathole flow.
溜放粘结性矿料时常会出现两类放矿障碍，一类是稳定粘结拱卡堵，另一类是形成管状流动。
To block stoping, mining system design mainly includes design of block parameter, design of pillar's dimension, design of ore drawing sequence.
对于阶段空场法，采矿系统设计主要包括采场结构参数、矿柱大小、回采顺序等。
Scraper is widely used in pillarless sublevel caving due to its high ore drawing efficiency, mobility, flexibility and general purpose application.
在无底柱分段崩落采矿法中，铲运机由于其具有出矿效率高、机动灵活、多用性等优点而被广泛采用。
As for ore drawn by hand or rock loader, the ore drawing quantity of each chute shall be kept uniform to ensure the flatness of working face of stope.
人工出矿或装岩机出矿方式，各出矿穿必须均匀出矿，保证采场工作面平整。
Research on continuous ore drawing and haulage equipment for underground metal mines has widely been done in main foreign countries with mining industry.
国外主要矿业国家对地下金属矿山连续出矿运矿设备进行了深入的研究。
Continuous mining for ore drawing and hauling in stope is one of the important achievements in the research area of continuous mining technology in China.
采场出矿运矿连续作业，是近年来我国在连续工艺技术研究领域中所取得的重大成果之一。
The crown pillar of stope is permanent loss and not recoverable, while sill pillar and barrier pillar shall be recovered after the ore drawing work is completed.
采场的顶柱作为永久矿柱损失，采场底柱、间柱等采场大量放矿完毕后，一次性进行回收。
Research shows that main cause of ore dilution in sublevel caving mining is tlnrational cut-off grade drawing. Non-dilution ore drawing is most ideal drawing mede.
研究表明，造成无底柱分段崩落法来出矿石贫比大的根本原因在于采用了不合理的截止品位放矿方式，无贫化放矿是无底柱分段崩落法最为理想的放矿方式。
Population and application of the dilution ratio ore drawing method has certain social value and economic value for implementation of the sill pillar-free subdrifting method.
低贫化放矿的推广应用对于实行无底分段崩落法的矿山具有一定的社会价值和经济价值。
YZZ vibration flow aiding machine is a newly developed ore drawing device, which is devised on the basis of the theory of autogenuous synchronization and directional vibro excitation.
采用自同步定向激振理论设计，将重力自溜与振动出矿融为一体的YZZ型振动助流器，具有分节组合、大倾角、无侧板的结构特点。
The characteristics and fundamentals of ore drawing control in block caving method are described and computer-based production scheduling for this mining method is studied in the paper.
本文阐述了自然崩落法放矿的特点及其放矿管理的基本原理，探讨了应用计算机进行自然崩落法排产的基本方法。
After analyzing the movement law of ore drawing body, the basic parameters of sublevel mine in a gold mine are calculated by the experiment result of single model and surface model in a lab.
介绍了无底柱分段崩落法放矿基本原理，利用室内单体模型和平面模型的放矿试验，分析了放矿体的流动规律，并据此确定了某金矿无底柱分段崩落法的基本结构参数。
But the reasonable installation position of the vibrating ex - citer in a vibrating ore drawing machine has not yet been determined satisfactorily, which usually affects the drawing efficiency.
然而，振动出矿机激振器合理位置的确定，尚未圆满解决，往往因此影响出矿效果。
The main technical performance data of the transfer station of vibrating ore drawing under research, its structural characteristics and the performances achieved in its industrial test are discussed.
就研究的振动放矿转载站主要技术性能参数、转载站结构特点和工业试验取得的指标进行了论述。
It can solve ore-drawing problems with various boundary conditions.
它可以解决各种边界条件下的放矿问题。
The process of ore- drawing in block caving is completed under overburden.
自然崩落法放矿基本上都是在覆盖岩层下进行的。
It is concluded that location of foot-wall drawing points are closely related to orebody dip, cut-off grade and ore grade of wall rock.
认为下盘放矿点位置与矿体倾角、放矿截止品位、围岩含矿品位有着密切的关系。
The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
The stochastic medium theory of ore-drawing can properly reflect the movements of ore and rock masses for caving system.
随机介质理论可以很好地反映崩落法放矿的矿岩移动规律。
The system is suitable for ore-drawing management of high level and large drawing area of block caving system.
该系统适合于大规模、高阶段矿块崩落法放矿生产管理。
According to this cutoff grade, the paper has calculated the ratio of ore and rock while cutoff drawing that provide science foundation for the drawing of Xiaoguanzhuang iron mine.
据此计算了截止放矿时的矿岩比，为小官庄矿放矿提供了科学依据。
It shows that the contact face between ore and waste as a ideal interface is incorrect during drawing.
研究指出：在放矿过程中，将崩落矿岩接触带视为一理想界面是不正确的。
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