The long - term groundwater observation data and hydrogeological data are used in the calculation of hydrogeological parameters.

并利用地下水长观资料及水文地质资料，对其水文地质参数进行了计算。

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Then the hydrogeological parameters can be calculated by using the Theis Formula with Step-Like Outflow, and the water level can be thus predicted.

近似等于泉水排泄和抽水延续时间之和t，用流量阶梯状变化的泰斯公式计算其水文地质参数，进行水位预报。

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The article is based on the determination of some hydrogeological parameters for the exploitation of underground hot-water in Xi 'an area and puts forward some views.

本文依据在西安地区地下热水开发中，对有关水文地质参数的确定提出了看法。

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