Abstract
A significant number of underground coal mine goaves are widely distributed in China. However, owing to their strong concealment and poor and irregular spatial distribution and diversity, they are typically prone to unpredictable roof cave-ins and collapses, thereby causing flooding and other disasters, leading to casualties, loss, and damage to property. Hence, preventing these events requires the detection of goaves, particularly water-filled goaves. In this study, the semi-airborne transient electromagnetic method (SATEM) was used to detect water-enriched goaves in the Nanling Coal Mine in Shanxi Province. Data processing methods such as noise elimination, baseline correction, and 1D Occam inversion were used to obtain the resistivity profiles and horizontal slices of the apparent resistivity values of the No. 2 coal seam in the survey area. The results revealed four main goaves named CK2–1, CK2–2, CK2–3, and CK2–4, along with 11 water-enriched goaves named JS2–1 through JS2–11, which were interpreted in the survey area. The interpretation results were further verified using downhole advanced drillings, which confirmed the reliability and effectiveness of the SATEM system as a surveying method in goaf ponding areas.
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