极限资源量模型与应用  

Ultimate Reserve Model and Its Application

作　　者：万丽[1] 王庆飞[2] 

机构地区：[1]广州大学数学与信息科学学院,广州510061 [2]中国地质大学地质过程与矿产资源国家重点实验室

出　　处：《地质科技情报》2007年第4期8-10,共3页Geological Science and Technology Information

基　　金：国家自然科学基金项目(40572063);教育部跨世纪人才培养计划;中国地质大学地质过程与矿产资源国家重点实验室开放基金项目(GPMR0626;0640);中国博士后科学基金项目(2005038361)

摘　　要：矿床金属储量最大容量(即极限资源量)是确定矿床是否还具有找矿潜力的重要参考数据。以矿床中多个矿体资源量统计分形模型为基础,并假定矿体储量连续变化,建立了极限金属资源量(T)预测模型,其与矿体极限数(C)基本呈线性变化;与矿体储量规模分布分维值(D)呈显著非线性变化。利用极限资源量模型,分析了胶东蚀变岩型大尹格庄金矿床的极限金属储量;考虑到大型矿体存在深部延伸,储量仍在不断增加,同时小型矿体统计不全,以中型矿体的金属储量为主要参考,建立了统计分形模型,并估算其极限金属储量为1.35×105kg,说明大尹格庄金矿床深、边部还存在较大的找矿潜力。The maximum capacity of metal reserve （the ultimate reserve） is an important guidance for confirming whether the deposit still owns the further prospect. In this paper, the ultimate reserve （T） model is established on the basis of the statistical fractal model of the orebody reserve distribution, and assumed the orebody reserves vary continuously. The T model is constrained by two parameters,the fractal dimension of orebody reserve distribution （D） and the logarithmic top number of the orebodies in the model （C）. T owns an approximately linear relationship with C,while T is strongly nonlinear related with D. Consider the reserve of the large size orebodies is continuously increasing since the orebodies downwards extending, and the reserve of the small size orebodies has incomplete statistic information, the fractal statistical model is then established mainly based on the metal reserve of the medium size orebodies. In this study,the ultimate metal reserve of the Dayin＇gezhuang deposit estimated by the model is up to 1.35×105kg. Also, it indicates the good prospect tendency still exist in the deeper and adjacent area of the Dayin＇gezhuang deposit.

关 键 词：分形模型 蚀变岩 胶东矿集区 资源量 

分 类 号：P624.7[天文地球—地质矿产勘探]