基于BP神经网络的地质缺失数据处理方法  

A BP Neural Network Based Method for Geological Missing Data Processing

作　　者：张玲玲[1] 李国清[1] 姜光成 李威 胡乃联[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]金策工业综合大学,朝鲜平壤999093 [3]山东黄金矿业(莱州)有限公司三山岛金矿,山东莱州261400

出　　处：《黄金科学技术》2015年第5期53-59,共7页Gold Science and Technology

基　　金：国家自然科学基金项目"金属地下矿山低品位资源动态评估理论与方法研究"(编号:51104010);中央高校基本科研业务费专项资金资助项目"矿山多源异构数据融合与挖掘技术研究"(编号:FRF-SD-12-001A)联合资助

摘　　要：在地质勘探过程中,由于技术、设备的客观条件限制,造成了部分基础地质数据的缺失,这使得矿床建模时地质数据不够完整准确,直接影响了矿体形态及储量估值的精度。为了向矿床模型的构建环节提供完整且可信的基础地质数据,首先研究了地质缺失数据的产生机制,并通过对比分析期望—极大化算法(EM算法)、马尔可夫—蒙特卡洛方法(MCMC方法)以及BP神经网络等数据插补方法的特点及适用条件,提出了基于BP神经网络的地质缺失数据处理方法,构建了地质缺失数据处理的BP神经网络模型,并在山东某金矿进行了实际应用与模型验证。结果表明,模型可以实现地质缺失数据的部分插补,插补结果可信,可以有效解决因基础资料缺失所带来的地质数据不完整问题。In the process of geological exploration,due to the limitation of technical and equipment objective conditions,there are lots of basic geological data missing.It causes that the geological data is not complete and accurate as building the deposit model,and has a direct impact on the accuracy of the orebody shape and reserves estimation.In order to provide the complete and believable data,so that the deposit model will be more realistic.Firstly the generation mechanism of geological missing data is studied to find out the method which geological missing data obeys.By means of comparing and analyzing the features and applicable conditions of Expectation Maximization（EM）algorithm,Markov Chain Monte Carlo（MCMC）method and Back Propagation（BP）Neural Network,then an interpolation method of geological missing data which based on BP neural network is selected and introduced,and the relative model of processing geological missing data is built up.Finally the whole method is applied in a certain gold mine in Shandong.It has been proved that the model can achieve interpolation of most of the geological missing data,and the results are reliable.In short,it is feasible and effective using the model to solve the integrity problem of geological data caused by basic data missing.

关 键 词：地质缺失数据 数据插补 BP神经网络 EM算法 MCMC方法 

分 类 号：P628[天文地球—地质矿产勘探]