Grade Distribution and Orebody Demarcation of Bauxite Seam Based on Coupled Interpolation

Wang, Shaofeng; Li, Xibing; Du, Kun

doi:10.1007/s13369-017-2537-8

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…Longwall mining technology, a widely-used method for mechanized continuous and large-scale extraction of underground coal [21][22][23][24][25][26], was progressively introduced for extracting an underground mineral seam, for example, a bauxite seam [27,28]. In the longwall mining panel, in general, the two roadways at both sides of the panel, called the tail roadway and the head roadway, are excavated to provide ventilation and transportation for mining operations.…”

Section: Methodsmentioning

confidence: 99%

Grade Distribution Modeling within the Bauxite Seams of the Wachangping Mine, China, Using a Multi-Step Interpolation Algorithm

Wang

2017

Minerals

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Abstract:Mineral reserve estimation and mining design depend on a precise modeling of the mineralized deposit. A multi-step interpolation algorithm, including 1D biharmonic spline estimator for interpolating floor altitudes, 2D nearest neighbor, linear, natural neighbor, cubic, biharmonic spline, inverse distance weighted, simple kriging, and ordinary kriging interpolations for grade distribution on the two vertical sections at roadways, and 3D linear interpolation for grade distribution between sections, was proposed to build a 3D grade distribution model of the mineralized seam in a longwall mining panel with a U-shaped layout having two roadways at both sides. Compared to field data from exploratory boreholes, this multi-step interpolation using a natural neighbor method shows an optimal stability and a minimal difference between interpolation and field data. Using this method, the 97,576 m 3 of bauxite, in which the mass fraction of Al 2 O 3 (W a ) and the mass ratio of Al 2 O 3 to SiO 2 (W a/s ) are 61.68% and 27.72, respectively, was delimited from the 189,260 m 3 mineralized deposit in the 1102 longwall mining panel in the Wachangping mine, Southwest China. The mean absolute errors, the root mean squared errors and the relative standard deviations of errors between interpolated data and exploratory grade data at six boreholes are 2.544, 2.674, and 32.37% of W a ; and 1.761, 1.974, and 67.37% of W a/s , respectively. The proposed method can be used for characterizing the grade distribution in a mineralized seam between two roadways at both sides of a longwall mining panel.

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Section: Methodsmentioning

confidence: 99%

Grade Distribution Modeling within the Bauxite Seams of the Wachangping Mine, China, Using a Multi-Step Interpolation Algorithm

Wang

2017

Minerals

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Fully Mechanized Longwall Mining in an Underground Bauxite Deposit: A Case Study

Wang

2017

Geotech Geol Eng

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Bauxite orebody demarcating and virtual mining for mining optimization within an underground bauxite seam, Southwest China

Wang

2018

Environ Earth Sci

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Grade Distribution and Orebody Demarcation of Bauxite Seam Based on Coupled Interpolation

Cited by 4 publications

References 16 publications

Grade Distribution Modeling within the Bauxite Seams of the Wachangping Mine, China, Using a Multi-Step Interpolation Algorithm

Grade Distribution Modeling within the Bauxite Seams of the Wachangping Mine, China, Using a Multi-Step Interpolation Algorithm

Fully Mechanized Longwall Mining in an Underground Bauxite Deposit: A Case Study

Bauxite orebody demarcating and virtual mining for mining optimization within an underground bauxite seam, Southwest China

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