本实用新型解决了长期以来压风机站不能在回风巷道内分设的难题。
The utility model solves the problem that compressed air station is not separately arranged in the air return laneway for a long time.
结果表明，巷道变形速度快、底鼓严重、巷道累计变形量大是首山一矿回风平巷变形的主要特征；
Results indicated that rapid rate, serious floor heave, large accumulative amount are the main features of tailgate deformation.
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