科研之友
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摘要
<正>During the underground mining of coal resources,overlying rocks on the roof of excavated tunnels will be destroyed due to ground pressure,and as a result,part of them will break and fall into the tunnels.How to determine the distribution of fractured areas and fissures presents a major problem for preserving the overlying aquifer.In most cases,the distribution of fissures induced
- 出版日期2015-12
- 单位中国地质科学院; 中国地质科学院岩溶地质研究所
