Repeated mining in thick coal seams and close-distance coal seam groups induces recurrent development of overburden fractures, resulting in persistent loss of groundwater bodies. Immobilized microbial ...
In view of the limited limited water storage space and unstable structure in traditional caving mining, and the invisibility of goaf leads to the difficulty of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results