This authors introduce the methods of a statistical and infinite calculus to determine the marginal grade of titanium placer in Panzhihua City,in order to make a complete analysis of reserves of titanium placers there.
简要介绍用统计和曲线积分方法确定攀枝花钛砂矿的边界品位;对传统的地质块段法储量估算进行数学纠正,并对调查区钛砂矿储量进行估算(以丙谷矿体为例),旨在提出一个钛砂矿储量估算分析流程。
Based on the grade distribution character of 320 Uranium Deposit and the technical economy indexes of mining and hydrometallurgy, the mine reasonable recovery marginal grade is determined with the assessment method of mathematical statistics by use of computer.
根据320铀矿床的品位分布特征和矿山采冶技术经济指标,以计算机为工具用数理统计估值法确定矿山合理的开采边界品位。
Marginal grade should go hand in hand with the price of mineral products.
边界品位与矿产品价格密切相关。
The titanium border grade of Panzhihua is identified by means of statistical and infinitesimal calculus(referring to the data of Yunan’s titanium properly) to get optimum application.
通过用统计和曲线积分方法(并适当参考云南钛砂资源的资料)来确定调查区合理的钛砂矿边界品位,达到矿产资源的最优利用;以规则的取样投影图形代替水平投影,对传统的地质块段法储量估算进行了数学纠正以得到合理的估算参数,并对调查区钛砂资源进行了远景储量估算。
The dynamic programming optimize method and its application of cutoff grade;
边界品位的动态规划优化方法及其应用
Discussion on influencing factors of cutoff grade
关于边界品位影响因素的探讨
Taking maximum net present value as an optimum target and considering factors in mining,milling and metallurgy,a dynamic optimum method for optimizing cutoff grade of underground orebody is given.
以净现值最大为优化目标,同时考虑采、选、冶三阶段因素,给出了地下开采矿体边界品位动态优化的方法。
The results showed that the cut-off grade of magnetite ore in Baiyunebo Iron Mine should be readjusted from 20% to 15%.
研究结果表明,该矿的边界品位指标应由目前的20%调整为15%,调整后可使矿山获得12041万元的增量经济效益和91。
On the basis of computerization of the optimization of open pit limit by moving cone,the data of simulated exploitation is computed with different cut-off grades.
以计算机实现移动圆锥的境界优化方法为基础,计算不同边界品位条件下的矿床模拟开采数据,分析得出盈亏平衡法确定边界品位的方法不能使矿山企业的总盈利最大,合理的边界品位应该低于盈亏平衡品位的结论。
By the calculation of minimum industrial grade and cut-off grade, the rational industrial standards of Shuangwang gold deposit have been certained.
通过对最低工业品位和边界品位的计算,提出了在当前技术经济条件下双王金矿床合理的工业指标,提高了矿产资源利用效率及矿山开发利用的经济效益。
submarginal mineral body
边界品位以下的矿体
They are respectively named cut-off grade, marginal grade, economic grade and the average grade of an ore deposit.
这4项品位指标依次为边界品位、边际品位、经济品位和矿床平均品位。
Dynamic Programming Optimization Model for Cutoff Grade and Its Algorithm
边界品位的动态规划优化模型及算法
Calculation and its Significances of Cut-off Grade and Minimum Industrial Grade to Shuangwang Gold Deposit at Shanxi Province
陕西双王金矿床边界品位和最低工业品位的计算及意义
Influencing Factors of Ore Cut-off Grade under Condition of Market Economy;
市场经济体制下影响矿石边界品位的主要因素
The greatest height of footwall cutting is determined through the theoretical analysis of cut-off grade method and breakeven point method.
通过对边界品位法及盈亏平衡法的理论分析,确定下盘最大切岩高度。
Sharp grade cutoffs are the rule at margins of orebodies.
品位的急剧下降是矿体边界上的规律。
Land located on or near a frontier.
边疆，边境位于或靠近边界的土地
THE NEW FORMULA OF BEM FOR CALCULATING THE DISPLACEMENTS AND THE STRESSES IN BOUNDARY LAYER
物体边界层域内位移及应力的边界元法新公式
Inverse Determination of the Boundary Conditions of Two-dimensional Potential Problems by Using the Boundary Element Method;
边界元法反求解二维位势问题的边界条件
Located or taking place near the outer boundaries of the area of play.
"靠场边的,位于或发生在靠近球场的外部边界的."
Check the edge- the edge overhang should be consistent throughout the perimeter of the countertop.
检查边缘：悬垂边缘必须位于台面界面以内。
Drug traffickers refuged in these border areas.
毒品贩子在这些边界地区躲避。
Crash Boundary of Products Caused by inputting Pulse Waves and Step Waves
脉冲波和阶跃波输入的产品破损边界
Discussion on the Boundary Reconstruction of the Search Engine Market from the Google Products;
从Google的产品论搜索市场的边界重建
index must be within the bounds of the List.
索引必须位于该列表的范边界内。
situated away from an area's coast or border.
位于远离海岸或者边界的地区。
Potential Kernel of Drift Motion of Brown and its Martin Boundary;
漂移Brown运动的位势核与Martin边界