【摘要】 介绍了这种新型矿用气垛支架的结构特点、实验室试验及工业性试验过程。更多还原

【Abstract】 Coal reserves of low seams occupy high prop otion in whole coal reserves in China. New type bladder support has successfully been developed by Beijing Research Institute of Coal Mining, Central Coal Mining Research Institute. The support is used in low seam longwall faces on trial. Experimental results of the support are satisfactory. The support is characterized by——active support system with addition resistence charcateristic;—capability in effectively resisting side horizontal push caused by roof;——strong capability in resisting impact overload;—— "flexible supporting" in large area,——large extension-contraction ratio and good suitability in variance in coal seam thickness;——simply-support structure and convenient maintenance;——low specific pressure on floor and good suitability in soft floor;——long service life.The author details the character of bladder support and experimental process in lab.and field.更多还原