CO2 geological sequestration (CGS) is an effective method of securing CO2 in coal seams, thus preventing its release to the atmosphere and contributing to global warming as a greenhouse gas. To explore a cost-effective cyclic treatment of CO2, we establish a novel cycling technology via laboratory-scale experimental and numerical modeling studies, which significantly increased the volume of sequestered CO2 while reducing the CO2 emission and projects costs.
Advance forecast of water inrush can help ensure operational safety in underground engineering. We develop a coupled thermal–hydraulic-mechanical (THM) model to predict the process of water inrush from collapse columns in coal mines with complex geological environments using the finite-element method.
