PDF(8011 KB)
PDF(8011 KB)
PDF(8011 KB)
某磷矿房柱法开采地压规律及矿柱宽度研究
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}Study on Ground Pressure Law and Pillar Width of Room-and-Pillar Mining in a Phosphate Mine
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