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本文用数值模拟的分析方法，评价了三山岛金矿地下开采引起的开采效应及地表下沉盆地的变形特征。结果表明，矿山地表是稳定的，上部一期工程开采引起的地表最大下沉量不超过７００ｍｍ，深部开挖时不超过９９５ｍｍ左右；在采场充填的情况下，地表下沉值将降低５５％左右；由于矿山地表变形较小，加之覆盖层第四纪中存在着两层总厚度８～１２ｍ的隔水粘水层，因此不致沟通地表水与井下的直接联系而危及矿山的安全。
In this paper, numerical simulation analysis method was used to evaluate the mining effect caused by underground mining in Sanshandao Gold Mine and the deformation characteristics of the surface subsidence basin. The results show that the mine surface is stable. The maximum surface subsidence caused by the first phase of mining project is not more than 700mm and the deep excavation is no more than 995mm. In the case of stope filling, the surface subsidence value will be reduced by 55% Due to the small deformation of the surface of the mine and the existence of two layers of water-blocking glue layers with a total thickness of 8 to 12 m in the Quaternary of the covering layer, the direct contact with the surface water and the underground will not be communicated to endanger the safety of the mine.