AUTHOR=Lou Peijie , Sun Lichen , Pan Cheng , Ji Penghui , Liu Huan TITLE=Experimental and discrete element method study on the mechanical properties of hole-fracture sandstone JOURNAL=Frontiers in Materials VOLUME=11 YEAR=2025 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2024.1535986 DOI=10.3389/fmats.2024.1535986 ISSN=2296-8016