Determine Coverlay Thickness According to Air Leakage Characteristics in Open Pit to Underground Overlay

Abstract:

During surface-underground combined mining, the method to control the ground air leakage is adopted by the capping layer using the fragmented rocks and the discarded tailings. In order to study the air leakage characteristic with the capping, the porosity of the rock particles of seven sizes and the air leakage characteristics of the capping were studied and the relationship between the air leakage coefficient and amount of air leakage with the capping height were found basing on the laboratory analogue simulation tests. It can provide the theoretical basis for determining the capping height of iron mine.

• Periodical: Advanced Materials Research (Volume 567)
• Pages: 88-91
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.567.88
• Online since: September 2012
• Authors: Chen Chao, De Qing Gan, Ling Qi Zhu, Ya Bin Zhang, Hong Jian Lu
• Keywords: Air Leakage, Analog Simulation Experiment, Capping, Surface-Underground Combined Mining

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