首页>
外国专利>
Method for conducting exploitation by pillar and stall working in the neighbourhood of the unmined coal left over
Method for conducting exploitation by pillar and stall working in the neighbourhood of the unmined coal left over
展开▼
机译:在剩余的未开采煤附近进行支柱和失速工作进行开采的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
reveal the solution, in which oil is cut and fastened on the pillars of the technological chamber whose dimensions decreases successively to the dimensions of the pillars of the residual.way is characterized by the fact that in the environment of calizny (6) leaves on both sides of the at least two rows of pillars of technology (7), and another at least one row are the pillars of technology (8) whose size is reduced about 50%, while the remaining pillars technolog iczne takes to the dimensions of residual pillars (5).
展开▼