The spatial geometry of magmatic intrusions is complicated and varied.However,the intruded process of magmatic intrusion can be simplified if the intrusions and ore-bearing fluids have the same source in the depth.This paper presents the physical connected-vessels model for magmatic intrusions,and derivates an analogical geologic model.The author tried to apply this model to Dajing ore deposit and test the viability on the basis of collecting previous studied achievements and the geological evidences for dikes and ore veins in Dajing ore deposit.The experimental results show that this connected vessel model can be used in Dajing ore deposit.The author believed that this model can be used to predict accurately the orebody in the depth if there are enough boundary conditions limited for this model.%岩浆侵入体的空间几何形态是复杂多变的,若一个矿区内岩浆侵入体的源区相同,并且成矿流体也是来自相同层位,那么可以对它们的侵位过程进行简化处理.文章提出岩浆侵入体的一个物理模型——连通器,并从连通器原理推导出类似的地质模型.初步尝试利用该模型应用于大井矿床,结合前人对大井矿区岩脉和矿脉的详细研究成果和事实,对连通器的地质模型进行了初步检验.结果表明:连通器模型在大井矿区是可以适用的,如果限定模型的边界条件足够多,该模型是可以用来进行深部预测的.
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