AUTHOR=Guo Linning , Hou Kepeng , Sun Huafen , Yang Yong TITLE=Risk assessment of goaf instability based on a variable weight model JOURNAL=Frontiers in Earth Science VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2024.1469834 DOI=10.3389/feart.2024.1469834 ISSN=2296-6463