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矿井通风网络中的角联分支由于两端风压差小，受相关分支风阻变化，风流方向容易发生变化。王庄矿中央石门处于网络角联中，由于冬季自然风压的作用，容易引起风流方向改变。对改变的原因进行了初步分析并提出了基本解决办法。
Due to the small pressure difference between the two ends, the corner branch in the ventilation network of mine is affected by the wind resistance of the relevant branches and the direction of the wind flow is prone to change. Wangzhuang Mine Central Shimen in the network corner, due to the role of natural wind pressure in winter, easily lead to changes in the direction of the Merry. The reasons for the change were analyzed and the basic solutions were proposed.