一、退役矿井的难点1.亏损严重。唐家庄矿1991年经中煤总公司批准退役,仅剩可采储量144万吨。目前,该矿采掘区队全部分散在井田深部的断层夹缝带,靠开采边角残煤和遗留煤柱维持生产。由于作业面狭小,造成衔接紧张,搬家倒面频繁,大幅度降低了矿井的生产能力。矿井生产的通风、运输、排水、提升等系统能源、材料、设备投入大;人员多,工资支出高;战线长、固定费用大,造成原煤成本过高。1992年单位成本106.10元/吨,比1991年上升了 First, the difficulties of retired mine 1 loss is serious. Tangjiazhuang Mine was approved by China National Coal Corporation in 1991 for decommissioning, leaving only recoverable reserves of 1.44 million tons. At present, all the mining area teams in the mine are scattered in the deep fault fracture strata of the minefield, and the residual coal and the remaining coal pillars are maintained at the production sites. Due to the small work surface, resulting in convergence tension, move frequently backwards, a substantial reduction of the mine’s production capacity. Mine production of ventilation, transportation, drainage, upgrading and other systems energy, materials, equipment into a large number of personnel, high payroll expenses; long line, a large fixed costs, resulting in high cost of raw coal. Unit cost in 1992 was 106.10 yuan / ton, up from 1991