This paper introduces the fan and chasm traps in ER models, analyses the causes and problems of connection traps, and presents the solution for the problems.

介绍了实体-联系模型中出现的扇形陷阱和深坑陷阱，分析了两种连接陷阱产生的原因及导致的后果并提出了问题的解决方法。

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There are a lot of traps with the main styles of draping anticline, fault trap and deepwater fan.

圈闭数量较多，其类型主要有披覆背斜、断层圈闭和深水扇体等。

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ResultsSand architecture of fan delta, subaqueous fan associated with main mass sources are outlined, helping to identify potential structural, lithologic and composite traps.

结果在凹陷内圈定了与主河口有关的扇三角洲前缘、水下扇等骨架砂体的展布，识别出了构造、岩性及复合等多种可能的有利圈闭。

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