Abstract:  Coal mining has resulted in large areas of goaf and numerous abandoned mines. There are a large amount of coalbed methane resources in these abandoned mines. Different from conventional coalbed methane resources, the exploration and development of coalbed methane resources in abandoned mines are affected by the distribution of open areas, overburden, surrounding rock conditions, development of fissure zones, and conditions of the roof and floor of coal seams, coal mining methods, groundwater in goaves, etc., and geophysical exploration technology can provide technical support for developing coalbed methane in abandoned mines. This article provides an overview of coal geology in Shanxi and explores the factors contributing to the collapse and water accumulation in goaves. It also examines surrounding rocks and goafs' seismic wave, electrical, induced polarization, and radioactive radon anomalies characteristics. Furthermore, the article introduces various detection methods such as seismic, direct current, controlled source audio-frequency magnetotelluric, transient electromagnetic, induced polarization, radioactive prospecting, microtremor exploration, aviation, and semi-aviation transient electromagnetic methods. It is pointed out that developing and researching new geophysical techniques, establishing a multi-method, multi-dimensional, and multi-space comprehensive goaf detection system, making full use of geophysical big data, and in-depth exploration of artificial intelligence inversion technology can provide valuable information for coalbed methane resources in abandoned mines in my country. It is providing technical support for exploration and development.

Key words:  , abandoned mines, coalbed methane resources, goaf, geophysical exploration