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| A NEW METHOD OF RECOGNITION AND PROCESSING EXTRA-HIGH-GRADE VALUE |
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Received:April 11, 2011
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| DOI：10.3969/j.issn.1005-7854.2011.03.009 |
| KeyWord:extra-high-grade value; random numbers; geostatistics; statistical distribution; grade changing coefficient method |
| Author | Institution |
| LIN Ji-fei |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming ， China |
| CHEN Ri-hui |
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming ， China |
| LI De |
Yuxi Mining Co.Ltd, Yuxi ，Yunnan， China; Mining Research Institute of Yuxi Mining, Yuxi ，Yunnan，China |
| FENG Xing-long |
Yuxi Mining Co.Ltd, Yuxi ，Yunnan， China; Mining Research Institute of Yuxi Mining, Yuxi ，Yunnan，China |
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| Abstract: |
| Through the comprehensive evaluation of current identification and treatment methods of Extra-High-Grade value, a new approach has been proposed. The new method adopts the criterion to recognize the extra-high-grade value and the quantity of extra-high-grade values. The samples and random numbers are sorted in descending order, and use the corresponding random numbers to substitute the super-extra-high value. In the case analysis, after dealing with the new method, the kurtosis of grade distribution and slant degrees are dropped substantially, while he mean and standard deviation of the grade are of no major changes. Compared to the result of processing by grade changing coefficient method, when the kurtosis and partial degrees drop the same value, the processing result of new method is closer to the original data, which means that the new method processing result is more reasonable. |
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