Then water inflow in tunnel is forecasted using groundwater dynamics and groundwater modulus of runoff.

然后利用地下水动力学法、地下水径流模数法对隧道开挖涌水量进行了预测。

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There are many factors that affect the runoff modulus and the variation coefficients of flood discharge and low flow, such as climate, rock, soil, land form, and so on.

影响流域洪、枯水径流模数、变差系数的因素很多，如气候、岩性、土壤、地貌等许多自然条件。

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The erosion amount and the modulus of erosion of the watershed calculated by the model are very close to those determined by the runoff experimental fields.

并以鄂东花岗片麻岩侵蚀区的某荒坡小流域为例，计算了其坡面土壤侵蚀量和侵蚀模数，计算结果与径流场实测结果十分接近。

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