关键词: 三维成矿条件, 成矿预测, 找矿地质模型, 立方体预测模型, 三维信息法, 找矿靶区

Abstract: The geological prospecting model of Jiaojia gold ore belt is established by analyzing the geological characteristics and ore-controlling conditions of the large and medium-sized typical ore deposits in Jiaojia gold ore belt，Shandong province.The geological ore-controlling conditions and the change rule of prospecting criteria in the deep are summarized.The three-dimensional geological solid model of rock mass，the known orebody and geophysical anomalies are obtained by utilizing Surpac software.Based on the above analysis results，firstly，the three-dimensional solid model is divided into small cubes by adopting the cubic predicting model.Combing with the geological prospecting model，the identified prediction parameters are regarded as attribute values assigned to each cube of the three-dimensional solid model so as to establish the digital prospecting model; then，the three-dimensional metallogenic favorable conditions are analyzed and extracted from the 13 prediction variables of geological，geophysical and geochemical of the research area，and the information quantity values of the 13 prediction variables are calculated by using the three-dimensional information method to look for the space parts of the mineralization favorable combinations.Besides that，6 prospecting target areas are delineated on the basis of the information such as actual geological conditions，distributions of the existing mine engineering and so on; finally，the total mineral resources of 6 prospecting target areas are obtained as 382.482 8 t by adopting the volume estimating method.The above analysis results can provide some reference for the prospecting work in this research area.

Key words: Three-dimensional metallogenic conditions, Metallogenic prediction, Geological prospecting model, Cubic predicting model, Three-dimensional information method, Prospecting target area