The Effect of Using Cokriging against Ordinary Kriging When Estimating Phosphate Deposits at Elsebaiya Area, Egypt

• 作者: H. A. Farag M. A. Gouda M. A. Yassin
• 来源期刊: 世界工程和技术(英文)
• 学科: 地球科学
• 关键词: Ordinary Kriging Cross Variogram COKRIGING Elsebaiya
• 年，卷（期）: 2020,（4）
• 页码范围: 700-711
• 页数: 12页
• 分类号: P61

摘要

Application of geostatistical techniques when evaluating mineral deposits could reflect some geological characteristics which help through the stage of planning and production. In the present study<span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> an attempt has been done on two phosphate deposits at Elsebaiya area on both sides of the River Nile namely</span><span style="font-family:Verdana;">:</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> Um Tondoba mine at Elsebaiya East area and Western River Nile mine in Elsebaiya West area. Depending on the available data, statistical analysis illustrated differences in the distribution of P</span>_{<span style="font-size:12px;font-family:Verdana;">2</span>}<span style="font-family:Verdana;">O</span>_{<span style="font-size:12px;font-family:Verdana;">5</span>}<span style="font-family:Verdana;"> % and ore thickness within the studied areas. Geostatistics used to start with constructing variograms for P</span>_{<span style="font-size:12px;font-family:Verdana;">2</span>}<span style="font-family:Verdana;">O</span>_{<span style="font-size:12px;font-family:Verdana;">5</span>}<span style="font-family:Verdana;"> % and thickness for the two phosphate deposits to be used with ordinary kriging models, also constructing cross variograms between P</span>_{<span style="font-size:12px;font-family:Verdana;">2</span>}<span style="font-family:Verdana;">O</span>_{<span style="font-size:12px;font-family:Verdana;">5</span>}<span style="font-family:Verdana;"> % and thickness to be used with cokriging models where the difference in the variogram parameters reflected a specific variation for each deposit horizontally and vertically. The ordinary kriging models and cokriging models illustrated different distribution behavior through both the two kriging techniques.</span></span>