批洲金铅矿地质矿产特征、控矿因素及找矿标志

叙述了靖宇县批洲金铅矿区地质矿产特征、成矿控制因素及找矿标志。根据矿化蚀变特征以及矿石矿物共生组合、结构构造等特点,可划分为两个成矿期4个成矿阶段。指出断裂构造交汇部位及其附近是矿体主要赋存部位。     

Conserving the common heritage of humankind – Options for the deep-seabed mining regime

The seabed in areas beyond national jurisdiction is the common heritage of mankind (CHM), as declared in the 1982 United Nations Convention on the Law of the Sea. The CHM principle requires not only the sharing of benefits (the subject of a parallel article by the authors) but also the conservation and preservation of natural and biological resources for both present and future generations. The International Seabed Authority, tasked with operationalising the CHM principle in the context of deep-seabed mining, has not yet defined which measures it will take to give effect to environmental aspects of the CHM principle. This article seeks to contribute to the discussion about the operationalization of the CHM principle by specifically examining the environmental dimension of the CHM principle. To this end, the article interprets the CHM principle in the context of sustainable development and discusses a number of potential options the Authority could consider to support the application of the CHM principle. These include: funding scientific research to increase knowledge about the deep ocean for humankind; ensuring public participation in the decision-making process; debating the need for and alternatives to deep-seabed mining; determining conservation targets and levels of harm deemed acceptable; limiting environmental impacts; preserving mineable sites for future generations; compensating humankind for environmental harm; and ensuring enforcement.     

Establishing a Clean‐quality Indicator System for Evaluating Reclaimed Land in the Antaibao Opencast Mine Area,China

This article discusses the existing problems associated with reclaimed land in the area of the Antaibao Opencast Coal Mine, which is located in the semi‐arid region of northwest China. The following eight indicators of the suitability of the reclaimed land were developed based on the theory of soil genesis and landscape ecology: the thickness of the effective soil layer, composition of the soil surface, vegetation index, types of covering vegetation, slope of the terrain, time of reclamation, area of the evaluation unit, and the shape index of the evaluation unit. The suitability evaluation indexes of the reclaimed land were determined using the 3S technology and fuzzy evaluation methods, which revealed that the suitability of the reclaimed land in the study area could be divided into six grades and two categories, land suitable for farming, and land suitable for trees or grass. The suitability evaluation indicators and evaluation methods developed to evaluate reclaimed land in this study will be beneficial to the large‐scale rapid monitoring and the effective management of reclaimed land in the opencast mine area.     

断层构造对煤层底板突水的影响分析

在原岩应力、地质构造、地下水等因素基础上,从应力场和渗流场共同作用的角度出发,研究含底板岩体在内的采场岩体系统的变形与破坏。研究结果表明,随着工作面向前推进,底板岩层的破坏深度和范围逐渐增加,底板岩层中水平应力低于承压水压力的深度也逐步增大。随着开挖接近断层,断层对应力分布情况的影响越来越明显,最终在断层处造成突水。为了预防底板突水的发生,合理留设防水煤岩柱是必要的工程措施。     

矿山虚拟现实中多细节层次模型的应用

本文叙述了多细节层次(LODs)相关应用,对基于LODs技术的不同数据库表达方式进行了详细阐述,分析了LODs中不同细节层次平滑切换缓冲技术的应用原理。首先对大庄矿虚拟中使用LODs技术,较好地解决了原模型浏览时视觉不连续和画面跳变的问题。接着用VRML编程实现网上发布模型的LODs,解决了在IE等浏览器中模型漫游时不连续的问题。     

多源大数据支持的土地储备智能决策模型集研究

伴随着城镇化的快速推进,城乡建设用地资源日益紧张,但目前土地储备决策缺乏精准科学依据,无法有效地进行资源配置和宏观调控。针对此问题,本文深入剖析土地储备基本业务与决策环节,研究了一套面向土地储备的智能决策模型集,包括存量土地监测模型、收储成本预测模型、出让价格预测模型、储备平衡分析模型、相似地块分析模型、开发时序分析模型及病态地块识别模型,旨在将土地储备决策环节科学化、定量化和模型化,并重点为土地储备总量、效益、规模、结构、布局、时序的统筹安排提供建议。另外,该模型集具有体系化、高效灵活、智能化的特点,能够服务于储备业务全链条,满足即时决策应用需求和实现模型自主更新与进化,保证模型的时效性。最后,该模型集已经工程化应用于宁波市土地储备智能决策支持平台,实践验证了以上决策模型具有较高的准确度和实用性,表明模型集能够为土地储备的科学决策提供理论依据,有利于土地资源的集约利用和高效配置。     

基于云计算架构的分布式数据挖掘研究

物联网的快速发展对数据挖掘系统提出了新的要求,传统的分布式数据挖掘系统已经无法满足物联网数据挖掘处理的要求.在基于不可信节点的云计算架构基础之上提出了一种新型的分布式数据挖掘模式,实现分布式数据挖掘无缝接入云计算系统,以满足物联网的需求.     

多粒度时空对象动态行为表达模型与方法研究

对具有动态变化特征的空间实体的描述,除了表达其内在属性外,还应包括动态行为.传统GIS把空间对象内在属性和动态行为分开建模本质上是一种基于地图的静态建模思想,而多粒度时空对象把行为能力作为对象的固有属性,是区别于其它对象的一个重要特征,使得全空间信息系统能够描述具有认知和行为能力的"活"的地理实体.本文针对具有规则化动...     

空间数据挖掘进展

空间数据挖掘是解决海量空间数据利用瓶颈的技术之一.本文综述空间数据挖掘的研究与应用进展.首先,分析空间数据挖掘的缘起.其次,研究空间数据挖掘的本质及其特点.再次,基于理论技术,分类总结空间数据挖掘的研究和应用的成果,并探讨其研究方向.最后,总结全文.