Direct current (DC) electrical sounding was performed to quickly identify the location of potentially dangerous water hidden in burnt rock (formed by spontaneous combustion of the coal). The Fisher discriminant method was used to generate the functional relationship between borehole water inflow and DC electrical sounding data, and a model was established to identify the water-enriched burnt rock areas. Based on a reevaluation of the training samples, the accuracy of the water-rich discrimination model was found to be 89.1%. Finally, the water enrichment in the burnt area was predicted based on DC sounding data from 576 survey points in five exploration lines, and the predictions were compared with the subsequent water inflow data from boreholes. We found that the predicted results were highly consistent with the water inflow data in the boreholes. Thus, the feasibility of using this approach was verified.
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The authors thank the National Natural Science Foundation for funding this research (Grant 41472234). We also thank Editage for English language editing.
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Xie, H., Li, J., Dong, Y. et al. Fast Fisher Discrimination of Water-Rich Burnt Rock Based on DC Electrical Sounding Data. Mine Water Environ (2021). https://doi.org/10.1007/s10230-020-00747-x
- DC sounding
- Burnt rock water enrichment property
- Fisher discrimination
- Mine water management