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由煤炭科学总院太原分院设计,船舶总公司平阳机械厂制造的国家“七五”攻关项目“TZ510—7/14型六柱双伸缩支撑掩护式液压支架”,型式试验和井下试验超过攻关指
TZ510-7 / 14 type six-post double-telescoping support hydraulic support made by the Taiyuan Machinery Plant of the General Administration of Coal Industry, “Seventh Five-Year Plan” project of the State Shipbuilding Corporation, type test and downhole test surpass the key points