In Situ Modification of Deposit Properties to Improve Mining, Fluidization and Green Mining

Dear Colleagues,

With the sustained and rapid development of society, the conventional geological resources on which human beings rely are decreasing due to large-scale development, or easy mining and high-quality resources are greatly reduced. The development of unconventional and deep resources is urgently needed. However, the traditional methods make it difficult to effectively exploit the unconventional and deep resources. An in situ modified method with high efficiency and economic benefits is necessary. This Special Issue aims to present recent advances in the in situ modification of deposit properties to improve mining, including the safe, efficient and green mining of underground mineral resources such as coal, salt mine, oil shale, nonferrous metal ore, radioactive mineral resources or energy, via the modification of the physical and/or chemical properties of these deposits by in situ technology, such as injecting heat, gas, fluid into deposits or fracking and slotting. Both research and review articles related to the above areas can be included in this issue. Potential topics include but are not limited to the following:

• Experiments and theories regarding Thermal-Hydrological-Mechanical-Chemical（THMC）coupling or the coupling of two or three of the above fields in mass porous media;
• In situ modified mining experiments, theory and technology of coalbed methane, shale gas, oil shale, gas hydrate and other oil and gas resources;
• Fluidization and green mining experiments, theory and technology of coal and other resources;
• In situ pyrolysis experiments, theory and technology of coal resources;
• Theory and technology of salt deposit solution mining and oil and gas storage construction;
• Experiments, theory and technology of leaching mining of nonferrous metal ore and rare earth;
• Experiments, theory and technology of fracking, slotting, heating, injecting gas, fluid into deposits and any other methods related to modified mining;
• Economic or environmental benefit of in situ modified methods;
• Issues in high-temperature rock mechanics;
• Issues in geothermal energy.

Prof. Dr. Lanhe Yang 
Dr. Tianhong Duan
Dr. Cliff Mallett
Guest Editor

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• in-situ modification of deposit properties
• improving mining, fluidization mining
• green mining
• economic or environmental benefit