The characters, damage and cause of rib fall at blasting face were analysed, and preventive measures were put forward, which has some reference value for other similar condition mines.

针对炮采工作面片帮特点、危害、原因进行深入分析，并提出相应的防范措施，对类似工作面片帮现象的防治具有借鉴意义。

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To make a horse's trot longer and bigger, drive forward into a more constant connection. This will make the rib cage looser.

让马执行又大又长的快步，保持联系和向前，可以放松肋部。

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