Enhancement of the technology of mining steep ore bodies applying the “floating” crown

نویسندگان

چکیده

When mining ore bodies in Kryvyi Rih iron basin, underground mines apply open stoping or bulk caving systems proportion of 55% to 45%. Most prefer with pillar caving. Yet, rock pressure contributes growth costs for workings maintenance and deterioration extraction indices. Rock mass indices can be enhanced by application a protectve structure the upper part block that will enable additional decrease load on draw level. There are great many methods determining parameters constructive elements protective help keep its integrity whole period mining. The article suggests when steep bodies. research conducted demonstrates inclined structure, increase unit it from 200 1200t/m2 leads thickness 6.3-20.9m 5.5-18.4m crown length 40m 60m. developed system enables overall dilution 3%, content mined 1.3% without significant loads receiving

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ژورنال

عنوان ژورنال: E3S web of conferences

سال: 2021

ISSN: ['2555-0403', '2267-1242']

DOI: https://doi.org/10.1051/e3sconf/202128008013