【摘 要】
：
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 o
【机 构】
：
Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Institute
【出 处】
：
Acta Geologica Sinica(English Edition)
论文部分内容阅读
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
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. most cases, the distribution of fissures induced
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