Abstract
Under the background of China as a big coal-hungry country lasting till 2050, deep mining becomes more and more significant. However, deep coal seams usually have a very complex geological structure like Karst collapse columns, and excavation is often accompanied with water-inrush accidents, restricting the development of the coal industry. In order to study on seepage problems on fractured rock accompanying with mass loss during excavation in coal mines with karst collapse columns, researchers studied on water-inrush mechanism in karst collapse columns directly, researched on seepage behavior of fractured rock with pressure as the basis of studying on water-inrush mechanism indirectly, studied the fluid flow change in fractured rock regarding the change of liquid flow type in fractured rock as seepage instability, and observed and studied the phenomenon of mass loss during seepage in succession. In the following research, (1) the cementation, lithology, and match rate of testing samples, which are the foundation of the simulation study, need to be determined in more detail; (2) migrated particles in fractured rock should be distributed which are from migration, corrosion, erosion, and abrasion; (3) multi-permeate agents in the fractured geological structure, their diffusion and convection, and the related chemical reactions should be involved; (4) more and more contemporary mathematical methods will be introduced to help us to study the complex dynamic system; and (5) experimental equipment needs to be designed and improved. What we did before, do now, and will do later is to penetrate the mysteries of seepage problems on fractured rock accompanying with mass loss during excavation in coal mines with karst collapse columns.
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The authors thank the authors of all the references, and also the referees for their careful reading of this paper and valuable suggestions.
Funding
This work is supported by the Natural Science Foundation of Jiangsu Province of China (BK20160433), the National Natural Science Fund of China (11502229), the Joint Open Fund of Jiangsu Collaborative Innovation Center for Ecological Building Material and Environmental Protection Equipments and Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, the Outstanding Young Backbone Teacher of QingLan Project in Jiangsu Province, Jiangsu Government Scholarship for Overseas Studies, Scholarship for Overseas Studies in Yancheng Institute of Technology, and the Program of Outstanding Young Scholars in Yancheng Institute of Technology.
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Kong, H., Wang, L. Seepage problems on fractured rock accompanying with mass loss during excavation in coal mines with karst collapse columns. Arab J Geosci 11, 585 (2018). https://doi.org/10.1007/s12517-018-3881-z
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DOI: https://doi.org/10.1007/s12517-018-3881-z