The drill seizure cause during construction in Shanbei oil field oriented well is analyzed and puts forward preventatives for reference for the similar construction.

分析陕北油田定向井施工中发生卡钻事故的原因，提出预防措施，为雷同施工提供借镜。

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This paper summarized the malfunction about freight car brake seizure in the running of the train, also found the reasons resulting in it, and put forward corresponding countermeasures.

总结了货物列车运行中车辆抱闸故障情况，从中找出故障原因，并针对这些问题提出相应的解决措施。

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