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gallery ventilation
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gallery ventilation
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gallery ventilation
巷道式通风
在两条平行隧道同时掘进,或有平行导坑、竖斜井等辅助坑道施工的地下工程中,利用已建成的隧道及辅助坑道作为风道,通过横通道的连接,组成施工通风系统的措施。
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