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山东杏山官庄铁矿基于SD法资源储量估算研究
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摘要
矿产勘查的各个阶段都需要进行资源储量的估算,资源储量估算工作是矿产地质勘查工作成果的总结。而资源储量估算方法的选择是整个估算工作中极为重要的一步,不同估算方法得到的估算结果的精度不同。
     传统法是我国目前资源储量估算领域应用最为广泛的方法,包括最常用到的算术平均法、块段法、断面法。这些方法共同遵循的原则就是把形态复杂的矿体或未知的矿体描绘成与矿体体积大致相当的简单形体,从而确定体积和资源储量。传统法简单易于掌握,但是对于复杂的矿体可靠性相对较低。
     SD法是我国地质工作者自行研发的一种矿产资源储量估算和审定方法。与传统方法相比,该方法具有诸多的优点。例如,该方法不受工业指标的限制,可随市场的变化而及时提供需要的储量,适应性强;该方法能够给出可靠的储量精度,用于指导生产。
     本文以山东省沂水县杏山官庄铁矿矿区深部铁矿详查项目为依托,对杏山官庄铁矿Ⅰ号、Ⅱ号矿体进行资源储量估算的研究。本文首先介绍了杏山官庄铁矿的区域地质背景及矿床地质特征,矿体特征等。通过分析,选择传统地质块段法及SD法作为Ⅰ号、Ⅱ号矿体资源储量估算方法。为了更好的理解运用SD法,本文对杏山官庄铁矿地质特征介绍完毕后,接着介绍了SD法的基本理论、原理及使用SD法进行资源储量估算的步骤。在SD法的基本理论及原理部分,介绍了动态分维几何学理论、降维形变原理、权尺稳健原理、搜索求解原理、递进逼近原理等。在对上述内容介绍完毕之后,本文采用SD法对杏山官庄铁矿Ⅱ号矿体进行资源储量的估算,其中包括根据杏山官庄矿区的实际情况及Ⅱ号矿体的特征编制计算方案,运用SD储量估算与审定软件进行储量的估算与分类,并对Ⅱ号矿体的工程控制程度进行了预测。本文接着采用传统块段法对Ⅰ号、Ⅱ号矿体进行了资源储量的估算,并将SD法与块段法对Ⅱ号矿体的资源储量估算结果进行了对比分析。
During every stage of mineral exploration, the work of resources and reserveestimation is needed and important, and it can be said that resources and reserveestimation is the summary of the whole geological exploration work. While in thework of reserve estimation, it is important to choose the appropriate estimationmethod, for the estimation results of different methods may vary considerably.Currently, the most widely used method in the field of resources and reserveestimation is the traditional method, including the most commonly used arithmeticmean method, block method, section method. The common principle of these methodsis to use a simple form with roughly the same volume as the complex or unknown orebody to determine the size and resources and reserve of the orebody. The traditionalmethod is simple and easy to master, but the reliability of its estimation results isrelatively low.
     SD method is a resources and reserve estimation and examination methoddeveloped by China’s geological researchers. Compared with the traditional method,this method has many advantages. For example, this method is not limited to theindustrial index, and can timely provide required reserve with the change of themarket; and this method can also give reliable reserve estimation accuracy to guidethe production.
     This paper mainly researches on the resources and reserve estimation ofXingshan-Guanzhuang Iron deposit. This paper first introduces the regional geologicalbackground and geological characteristics and ore body characteristics of Xingshan-Guanzhuang iron deposit. Through detailed analysis of those characteristics, this paperselects the traditional block method and SD method to estimate the resource andreserve of Xingshan-Guanzhuang Iron Ore. To better understand and use SD method, after the introduction of geological characteristics, this paper then introduces the basictheory and principles of SD method, including Fractal geometry theory, fall dimensiondeformation elements, SD scale-rule firm elements, search solution elements, andincrease approximation elements. After that, this paper uses SD method to estimate theresources and reserve ofⅡorebody of Xingshan-Guanzhuang Iron Deposit, and suchestimation includes the work of determining the proposal according to the actualgeological characteristics ofⅡorebody, and the work of resources and reserveestimation and examination using SD software, and also predicts the control degree ofⅡorebody. This paper then introduces how to use the traditional block method toestimate the reserve, and use such method to do the work ofⅠorebody reserveestimation, andⅡorebody reserve estimation, then compares the estimation results ofthese two different methods. At last, this paper gives the similarities and differencesbetween SD method and the traditional method of resources and reserve estimation.
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