矿石贫化率取决于放矿参数。
The ore dilution rate depends on the ore drawing parameters.
振动放矿技术正在我国许多矿山推广。
The vibrating ore drawing technique is being popularized presently in many mines in our country.
它可以解决各种边界条件下的放矿问题。
It can solve ore-drawing problems with various boundary conditions.
自然崩落法放矿基本上都是在覆盖岩层下进行的。
The process of ore- drawing in block caving is completed under overburden.
该系统适合于大规模、高阶段矿块崩落法放矿生产管理。
The system is suitable for ore-drawing management of high level and large drawing area of block 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 stochastic medium theory of ore-drawing can properly reflect the movements of ore and rock masses for caving system.
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。
This paper discusses the law of the ore drawing about Sublevel Caving Mining, and analyzes the reasons for the dilution and loss.
为此，研究了端部放矿过程中多方废石混入贫化损失的形成机理。
Therefore, the mechanism of dilution and loss formation in a side drawing process involving wastes coming from various directions is studied.
这一理论的正确性在双质体调速式振动放矿机的试制中得到了证明。
The correctness of the theory has been verified in the testing of the dual mass vibrating feeder.
一旦发生放矿溜井堵塞，则严重影响矿山的正常生产，乃至于造成停产。
Once orepass block happens, the normal operation of the mine would be seriously influenced, even resulting in operation stop.
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。
Cut-off grade method has been used to control the ore drawing in non-pillar sublevel caving mining both in and outside China.
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。
It shows that the contact face between ore and waste as a ideal interface is incorrect during drawing.
研究发现，在相同的放矿条件下，平面放矿方案比立面放矿方案更加合理。
The research found out that under the same ore-drawing conditions, the former was more reasonable than the latter.
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 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.
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。
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.
在综合分析了现场情况，根据散体流动规律及放矿学理论，提出了溜井改造技术方案。
Proposals for technical renovation of the raise were suggested based on a comprehensive analysis of the field situation and according to the bulk flow rule and ore draw theory.
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。
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.
本文就利用崩落矿石移动规律进行覆盖岩下放矿控制这一放矿理论的应用课题进行了探讨。
The paper approached the subject of the application of draw theory which utilizes the movement rule of caved rock to control ore-drawing under overlying rock.
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。
There are two kinds of hindrances to cohesive ores during ore drawing. One of them is stable stick arch and the other rathole flow.
当不能一步到位地施行无贫化放矿时，可用低贫化放矿，逐渐提高截止品位而趋向无贫化放矿。
When dilutionless drawing cann't be executed in one step, low dilution drawing can be used and the cut-off grade can be gradually raised towards dilutionless drawing.
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。
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.
分析非均匀矿岩散体在放矿过程中的流动特点，提出非均匀矿岩散体计算机模拟放矿过程的思路。
The computer simulation of drawing process is described based on analysis of flowing characteristics of heterogeneous loose body in drawing process.
通过对放矿随机过程的分析，提出了以布朗运动为理论基础的放矿过程散体颗粒移动的概率密度方程。
Based on the principle of Brownian motion, the ore drawn stochastic processes are analyzed and the probability density equation of loose bodies is thoroughly discussed and given in this paper.
在崩落法放矿理论的基础上，利用全新面向对象编程语言，开发了一种新的崩落法放矿计算机系统软件。
Based on the ore caving-drawing theory a new software of computer system for ore caving-drawing was developed, using a fully new object-oriented programming language.
计算结果表明，降低矿浆浓度、添加絮凝剂及大间距多支路放矿均可有效缩短尾矿在尾矿库中的澄清距离。
The calculation results showed that the transparent distance in tailing pond was effectively shortened by reducing the slurry concentration, adding flocculants and large spacing tailing discharging.
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。
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.
崩落采矿法是金属矿山地下开采应用较多的一种高效采矿方法，覆岩下底部放矿损失贫化大是该采矿法的一个特点。
Caving method is a high efficiency mining method widely used in underground metal mines. While it is a characteristic of the method that the loss rate and dilution rate is high.
无底柱分段崩落法贫化大是由现行放矿方式造成的，改用不贫化放矿后可使矿石贫化率在回采率不降低情况下大幅度下降到8％以下。
High dilution for sublevel caving is caused by existing drawing mode. Using thd undilutiondrawing can greatly decrease the ore dilution below 8% without decreasing recovery.
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。
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.
峨口铁矿为了解决东区采场的矿石出路问题，决定增建两条放矿明溜槽。本文简述了溜槽工程地质概况，详细介绍了溜槽的爆破成形设计方案，分析了爆破效果。
In this paper, the geological condition of the chute in the iron mine is discussed, the design program for forming the chute by blasting is also introduced, and the blasting effectiveness is analyzed.
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