Front Stress Distribution Under the Impact of Cutting Height to Caving Height Ratio in Extra-thick Longwall Top Coal Caving Technology
نویسندگان
چکیده
منابع مشابه
Development Patterns of Fractured Water-Conducting Zones in Longwall Mining of Thick Coal Seams— A Case Study on Safe Mining Under the Zhuozhang River
The key to the safe mining of thick coal seams under rivers is understanding the development patterns of fractured water-conducting zones (FWCZ) when various mining methods are used. To solve this problem, we employed numerical simulation to investigate FWCZ when slice mining and longwall caving mining are performed. When slice mining was carried out, the maximum height of the FWCZ in the highe...
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ژورنال
عنوان ژورنال: Inżynieria Mineralna
سال: 2020
ISSN: 1640-4920,1640-4920
DOI: 10.29227/im-2020-02-16