In coal mines of China, the situation of the safety production was very austere, the accidents frequency was great and the economic losses were much.
我国的矿山企业，安全生产形势严峻，事故多、伤亡大、经济损失严重，尤其是重、特大事故频繁发生。
The accidents of sliding train in inclined lane underground coal mines will not only damage the facilities, but also threat the safety of equipments and people.
煤矿井下斜巷发生跑车事故，不仅损坏设施，而且危及设备及人身的安全。
Coal and gas outburst is one of the major disaster accidents in coal mines, which is a serious threat to the coal mine production safety.
煤与瓦斯突出是煤矿重大灾害事故之一，严重威胁着煤矿的安全生产。
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