<正> A new experiment was made on the developing of bed separations and mining subsidence from Tangshan T2192 working face by equivalent materials simulation.Th
<正> At present the bored construction method is one of the main constructionmethods of metro and tunnel construction in China.The empirical estimated formuias
<正> Hongtoushan copper mine was studied by analyzing the type of heat source, the calculation method about thermal releasing in stope,thermal transfer between