以京唐港地区地质条件为模型，对大口径井点降水进行了详细的分析，对大口径井点降水在实际工程应用具有理论参考价值。

Taking the geological condition in the harbour district Jingtang Port as the model, the detail analysis on lowering water level by large diameter well point are given in the paper.

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采用沉井法施工大口径水源井可解决施工用淡水的问题。

This problem can be resolved by using submerged well method for constructing big diameter water sources well.

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可为大口径地热井和其他水文水井钻探工作借鉴。

These may be served as references for drilling in large geothermal and other hydrographic wells.

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