Recent research led by Yuan Zhang from the School of Mines at China University of Mining and Technology has made significant strides in understanding and evaluating geothermal resources in mining areas, specifically focusing on the Cambrian karst geothermal reservoir in the Pingdingshan coalfield. This study, published in the journal ‘Meitan xuebao’ (Journal of the Coal Industry), introduces a new three-dimensional geological modeling approach that enhances the accuracy of geothermal resource evaluation.
Traditional methods for assessing geothermal resources often fall short when applied to mine environments, leading to substantial errors in resource estimation. Zhang’s team addressed this issue by developing a conceptual model that outlines the geothermal system’s key components, including heat sources, fluid channels, and reservoirs. By utilizing data from drilling operations in the No.10 Coal Mine, they established a detailed 3D geological model using Groundwater Modeling System software. This model effectively visualizes the distribution of Cambrian karst strata and their overburden, providing a clearer picture of the geothermal reservoir’s structure.
One of the significant findings of this research is the estimated static hot water resource of 7.68 billion cubic meters in the Cambrian karst strata, which contains a substantial amount of heat energy—approximately 1.19×10^18 joules. The total geothermal resource, combining heat from both the hot water and the surrounding rock, amounts to 4.44×10^18 joules. Zhang emphasized the commercial potential of these findings, stating, “The recoverable geothermal resources are equivalent to 22.7 million tons of standard coal, indicating a substantial opportunity for sustainable energy production in the region.”
Moreover, the study highlights the water quality of the karst geothermal water, which exhibits slight corrosiveness and moderate scaling properties. This knowledge is crucial for industries planning to utilize this geothermal resource, as it suggests the need for corrosion and scale prevention treatments in metal pipelines and containers.
The implications of this research extend beyond academic interest, presenting commercial opportunities for sectors involved in renewable energy, mining, and water management. As the demand for sustainable energy sources continues to rise, the ability to accurately assess and harness geothermal resources could play a pivotal role in transitioning to greener energy solutions.
In summary, Yuan Zhang’s research not only advances the scientific understanding of geothermal systems in mining areas but also opens doors for commercial ventures aimed at tapping into these valuable geothermal resources, potentially revolutionizing energy production in the Pingdingshan region and beyond.
