Evaluation Method for Coal Combustion and Gasification for Underground Coal Gasification (UCG) Technology

煤炭地下气化(UCG)是一项将日本300多亿吨未开采的煤炭转化为能源的技术，它要求建立一种安全、高性能和环境友好的UCG技术，用于日本地质结构复杂的煤层。这项研究通过一系列的实验室实验、小规模现场测试和计算机模拟，论证了对煤层和岩石燃烧区域周围破裂活动的监测和控制。

Underground Coal Gasification (UCG), a technology to convert more than 30 billion tons of unmined coal of Japan into energy resources, demands the establishment of a safe, high-performance and environmentally friendly UCG technology for application to Japan's coal seams, which have a complex geostructure. This study demonstrated the monitoring and control of fracturing activity around a combustion area in a coal seam and rocks using a series of laboratory experiments, small-scale field tests, and computer simulations.