Study on the dynamic evolution characteristics of deformation and collapse of the extra-thick hard roof
Yima coal field has an extra-thick hard rock strata, which is the main cause of many dynamic disasters in the mining area. Based on the mining face 21221 of Qianqiu mine in Yima coal field, Henan Province, China, this paper studies the movement characteristics of extra-thick hard roof during the adv...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Emergency Management Press
2021-10-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.05.002 |