水采工作面回采巷道受压破坏分析《大屯煤炭科技》１９９３年第４期刊登严正同志的文章，对孔庄矿７２１５水采工作面在推采过程中，巷道的受压破坏进行了分析。文章首先介绍了７２１５工作面的个产技术条件：本工作面位于东一、二水平三区段，人行下山以东，东是落差为１... Analysis of pressure mining roadway pressure destruction of “Datun Coal Science and Technology” 1993 the fourth period published Yan Zheng comrades, the hole in the village of 7215 coal mining face mining process, the roadway compression and destruction were analyzed . The article first introduced the technical conditions for the production of 7215 face: the face is located in the East, the second level of three sectors, the People’s Bank down to the east, the east is a drop of 1 ...