Longwall mining techniques for minimizing surface structural damage
In anticipation of the development of longwall mining, the authors have been studying the subsidence problems that have occurred in major coal producing countries in the world. In this paper various mining techniques that have been successfully employed for reducing surface structural damages are reviewed and presented.
With common problems of aseismic construction of present comprehensive multi layer brick structure house,the before,processing and post supervision content and standard were analyzed from supervision aspect.The related supervision points were proposed,so as to make aseismic supervision of multi layer brick structure house standardization.