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煤矿塌陷,即顶板冒落,是煤矿工业在采掘过程中的严重灾害之—。采空区大面积顶板冒落,伴随着出现的高速气流,速度可达100m/秒以上,它压坏和掩埋坑下设备,摧毁工作面,威胁坑下工作人员的生命。顶板冒落,在地表形成圆形或椭圆形的陷落区,在陷落区内出现塌方和裂缝,裂缝最长的达数百米,最宽处达数米,对地面建筑物也造成破坏。解放前因大面积的顶板冒落,不少煤矿被报废,不少阶级兄弟的生命被夺去。解放后在毛主席革命路线的指引下,辛勤劳动的煤矿工人和工程技术人员,为了多采煤,快采煤,优质高产,安全生产,不断改革采煤方式,加强了顶板的管理,采取了积极有效的措施,同时也开展了顶
Collapse of coal mines, that is, roof caving, is a serious disaster in the mining industry during the mining industry. Large area of the roof gob roof, along with the emergence of high-speed airflow at speeds up to 100m / s or more, it crushed and buried under the pit equipment, destroy the face, threatening the lives of pit workers. Roof fall, the formation of circular or oval-shaped depression on the surface, collapse and cracks in the collapse of the area, the longest crack up to several hundred meters, the most wide at several meters, on the ground buildings are also caused damage. Before the liberation of a large area of the roof fall, many coal mines were scrapped, the lives of many class brothers were taken away. After the liberation, under the guidance of Chairman Mao’s revolutionary line, hard-working coal miners and engineers and technicians stepped up the management of the roof for more coal mining, quick coal mining, high-quality and high-yielding, safe production, continuous reform of the coal mining method, Positive and effective measures, but also carried out the top