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.
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。
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。
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。
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。
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。
The ore fragment size for block caving is predicted by means of topology, vector field conception and computer simulation technology.
运用拓扑学、矢体概念以及计算机模拟等技术对矿石崩落块度进行预测。
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。
Deficient floor slope Angle of an ore body often needs to dig a drift (or access) in its footwall rock when adopting non-pillar sublevel caving following-vein excavation.
采用沿脉布置的无底柱分段崩落法，当矿体底板倾角不足时，需要在下盘岩石中开掘进路。
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。
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。
Prediction for block caving velocity of ore-rock is a complex dynamic process that relates to the caving rule and to the relation between caving and time.
矿岩自然崩落速率预测是一个涉及崩落规律和崩落与时间相依关系的复杂动态过程，通过数值模拟的方法，对流变断裂型矿岩的自然崩落规律和崩落速率进行了模拟研究。
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.
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。
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。
The locating of the deep ore body in Hongtoushan Copper Mine showed that the main shaft build in 1960s was in the predicted caving scope.
红透山铜矿深部矿体探明后，60年代建设的主井在其预计开采崩落范围内。
It is proved that the occurrence of roof caving and ore pillar fracturing is rapidly decreased, and the whole safety of mining stop is significantly improved.
现场实践证明，采场顶板发生冒落、矿柱出现开裂或片帮等现象急剧减少，采场整体稳定性得到显著提高。
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。
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。
The ore body in main mining area of Yanqianshan iron mine has a structural character of easy-caving due to a dense joint distribution and a high Angle and thick ore-body.
眼前山铁矿主采区为节理裂隙比较发育的急倾斜厚大矿体，矿岩具有良好的可冒性。
The ore body in main mining area of Yanqianshan iron mine has a structural character of easy-caving due to a dense joint distribution and a high Angle and thick ore-body.
眼前山铁矿主采区为节理裂隙比较发育的急倾斜厚大矿体，矿岩具有良好的可冒性。
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