Influence of mining activities on mine rockmass and control engineering (in Chinese)
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文摘
Describes the contents, characteristics and recent progress of research entitled Influence of Mining Activities on Rockmass and Control Engineering, and its importance in coal mining and national economy. The main contents of the research are: how the whole rockmass is affected by mining activities from underground workings to the surface; the stress and strain of rockmass including severe deformation, displacement and failure and damage due to coal extraction. Recent progress in research includes: theory of spatial zonal distribution of deformation; theory of spatial morphology of surface deformation; theory of strata structures that influence deformation of rockmass and surface deformation; theory of strata quality evaluation for assessment of deformation resistance. Seven types of effect on rockmass due to coal extraction are found by the author. They are subsidence, deformation, horizontal displacement, vertical deformation, roof failure height, floor failure depth and intensity of stress concentration. The significance of the research is exploitation and utilization of mineral resources; underground and surface environmental protection; protection of water resources; safety and stability fo mountain slopes; utilization of subsided land; safety in mining and development and design of coal pillar; prediction and control of damages induced by mining.