商业性矿产勘查七大运作程序

在发达国家,商业性矿产勘查是矿山生命周期的起点,也是矿业最重要的组成部分。国际上将采掘业三分为石油天然气工业、矿业和采石业,它们的市场运作方式、资源管理模式差异很大。     

对地质勘查工作与矿产开发挂钩规定的思考

1986年10月1日起,我国实施了全国人民代表大会颁布的<中华人民共和国矿产资源法>(下称<矿产资源法>).20多年来,在这部法规的引导、规范下,矿产勘查和开发取得了成绩,同时也显露出<矿产资源法>存在的某些不足,对此,笔者进行了一些分析和思考,并提出几点意见与大家探讨.     

固体矿产地质勘查规范需要规范

对《固体矿产资源/储量分类》(GB/T 17766-1999)、《固体矿产地质勘查规范总则》(GB/T 13908-2002)及铁矿、铝土矿、岩金矿、铜矿、煤矿等常用矿种地质勘查规范进行了研讨,发现了其中的一些差错,并提出了修改意见,供矿产地质勘查同行们参考.     

浅析现今矿产勘查投资情况

矿业投资在矿产勘查阶段,蕴藏着极大的风险。我国矿产资源勘查和矿业工作发展战略正从外延式发展为主向内涵式发展进行战略性转变,政府开始重视对矿产资源勘查开发的有效投入,促进矿产资源投资主体多元化,在减少财政投资经费的同时鼓励商业性矿产勘查与开发。     

湖南省重要矿产资源潜力分析与近五年矿产勘查方向

通过对湖南省主要矿种的资源潜力分析,境内的主要矿产还具较大的找矿潜力。对湖南的基础性矿产勘查工作的主要矿种、勘查工作思路及勘查工作部署提出了建议。     

用新理念推动矿产勘查的自主创新

理念创新是对传统意识的挑战。对矿产勘查来说,理论研究要和找矿实践结合起来。找矿理论作为一种战略思想是运用先进的方法技术来实施。迅速掌握全局,指出大的远景区,逐步缩小靶区,最终在找矿上取得大的突破。     

2005年度黑龙江省矿产勘查公报

在各级国土资源管理部门的积极努力和各地勘单位的大力配合下，2005年度（2004年10月1日-2005年9月30日）矿产资源勘查项目（不含基础性调查项目、研究性项目和油气及煤层气项目，以下简称勘查项目）年检工作已顺利完成。现将勘查项目的有关情况公报如下：     

国外固体矿产勘查产业体制与机制

国外固体矿产勘查产业体制 国外固体矿产勘查在国民经济中属于基础产业,存在着市场经济体制与计划经济体制两种不同的勘查体制,但绝大多数国家实行的是市场经济体制而且矿产资源所有权都归国家所有.就西方矿业体制而言,存在两个显著特点:一是矿业和勘查业密切结合,无论是经营矿业公司还是政府管理机构,均将这两个行业合在一起予以经营或管理;另一个特点是政府管理职能和公司的经营职能截然分开.政府从鼓励投资开发,合理配置资源和检查依法经营的角度执法管理;企业则充分运用其资金、技术和经营管理能力"找好矿","开好矿",尽力找到量大质优的矿产资源,根据探获的矿产资源力求获得最大的开发效益.     

矿产系统勘查的基本原则和工作方法

本文详细介绍了矿产系统勘查的基本概念、基本原则和工作方法。认为开展矿产系统勘查研究，确定不同异常或矿床（点）的勘查准则，选择地质找矿和社会经济效益最好的勘查方法手段组合，是获取地质找矿重大突破的有效途径     

33235个固体矿产勘查项目接受年检

近日,国土资源部公开通报了2010年全国固体矿产资源勘查年度检查情况,九成多的勘查项目参加了年检。这是围土资源部首次公开通报固体矿产资源勘查年度检查情况。     

山东沂水龙泉站金矿床地球化学特征

沂水龙泉站金矿与成矿有关的主要地质体以新太古代泰山岩群与燕山期花岗岩金含量较高。对黄铁矿地球化学的研究资料表明:早期黄铁矿为金矿物的主载矿物。稀土元素分布特征反映了成矿流体由早期相对中偏高温(260~330℃)和还原的环境向晚期低温和氧化环境演变的趋势。对方解石、石英包裹体的研究表明:包裹体均一温度变化范围较宽,在107~550℃之间,可分为125~160℃,177~230℃和260~330℃3个温度峰值集中区,分别反映了以中温石英为代表的早期成矿阶段(260~330℃),以中低温石英和方解石为代表的中期成矿阶段(177~260℃)和以低温方解石为代表的晚期成矿阶段(125~160℃)。其冰点温度变化于-2~-8.6℃之间,盐度在3.39wt%~12.39wt%之间。     

绿松石呈色的晶体场理论计算

绿松石中Cu^2 电子组态为3d^9,为中心对称配位八面体，配位体为4个OH^-和2个H2O，在晶体场作用下，五重简并的d轨道分裂为5个能量不同的轨道，dx^2-y^2为基态，其余为激发态，依跃迁选律．从基态到四个激发态的跃迁为自旋允许跃迁，从而形成了铜离子吸收光谱的4条谱带。前人对绿松石中Cu^2 晶体场势能计算时，个别系数有误，笔者进行了修改，并补充了部分角度函数的积分值，从而使结果得到了改进，计算谱带位置与实测可见光吸收光谱谱带位置十分接近。在进行晶体场势能计算时，角度函数积分值是非常重要的，以往的资料只是直接给出了部分积分值，这在计算低对称配位八面体晶体场势能时是不够的，这次重新计算了所有可能的角度函数积分值，对各种对称下配位八面体晶体场能量的计算提供了可能。     

浏阳七宝山铜多金属矿床流体包裹体特征及成矿意义

从不同标高、不同矿化带的流体包裹体研究入手，系统地论述了七宝山铜多金属矿床成矿流体的性质、演化过程及其与成矿的关系。黄铁矿爆裂测温表明：成矿流体温度变化在平面上以岩体为中心向四周依次为291℃～287℃～279℃，在剖面上由下往上依次为312℃～286℃～228℃。成矿流体成分主要为H2O，其次为CO2，H^ 浓度由早期到后期呈递减趋势，表明成矿热液由酸性-弱碱性演化，同时反映了矿床由高温到中低温的形成过程。     

Numerical simulation of seepage flow field in groundwater source heat pump system and its influence on temperature field

Energy utilization in the aquifers is a new technology closely related to development of heat pump technique. It is significant for the flow distribution to be predicted in the aquifer surrounding the Groundwater Source Heat Pump System (GSHPS). The authors presented a new concept of "flow transfixion" by analyzing general features of aquifers, and then discussed interaction of the flow transfixion with the heat transfixion, which has practical significance to projects. A numerical model of groundwater flow was established based on the basic tenets of water-heat transferring in the aquifer. On this basis the flow field and the temperature field of GSHPS for a site in Shenyang City were numerically simulated. The basis of the flow transfixion was obtained; it was discussed for the influence of the flow transfixion on the heat transfixion. To a certain extent, the study offers some reference for the projects' design of GSHP in the studied area.     

Numerical simulation of seepage flow field in groundwater source heat pump system and its influence on temperature field

Energy utilization in the aquifers is a new technology closely related to development of heat pump technique. It is significant for the flow distribution to be predicted in the aquifer surrounding the Groundwater Source Heat Pump System （GSHPS）. The authors presented a new concept of ＂flow transfixion＂ by analyzing general features of aquifers, and then discussed interaction of the flow transfixion with the beat transfixion, which has practical significance to projects. A numerical model of groundwater flow was established based on the basic tenets of water-heat transferring in the aquifer. On this basis the flow field and the temperature field of GSHPS for a site in Shenyang City were numerically simulated. The basis of the flow transfixion was obtained; it was discussed for the influence of the flow transfixion on the heat transfixion. To a certain extent, the study offers some reference for the projects＇ design of GSHP in the studied area.     

Prediction of bridge temperature field and its effect on behavior of bridge deflection based on ANN method

In recent years, the bridge safety monitoring has been paid more attention in engineering field. However, the financial and material resources as well as human resources were costly for the traditional...     

Research and application of mineral resources assessment by weights of evidence model based on SIG

Geological data are usually of the characteristics of multi-source, large amount and multi-scale. The construction of Spatial Information Grid overcomes the shortages of personal computers when dealing with geological data. The authors introduce the definition, architecture and flow of mineral resources assessment by weights of evidence model based on Spatial Information Grid (SIG). Meanwhile, a case study on the prediction of copper mineral occurrence in the Middle-Lower Yangtze metallogenic belt is given. The results show that mineral resources assessement based on SIG is an effective new method which provides a way of sharing and integrating distributed geospatial information and improves the efficiency greatly.     

Research and application of mineral resources assessment by weights of evidence model based on SIG

Geological data are usually of the characteristics of multi-source, large amount and multi-scale. The construction of Spatial Information Grid overcomes the shortages of personal computers when dealing with geological data. The authors introduce the definition, architecture and flow of mineral resources assessment by weights of evidence model based on Spatial Information Grid （SIG）. Meanwhile, a case study on the prediction of copper mineral occurrence in the Middle-Lower Yangtze metallogenic belt is given. The results show that mineral resources assessement based on SIG is an effective new method which provides a way of sharing and integrating distributed geospatial information and improves the efficiency greatly.     

土压力滑楔理论的统一解

基于滑楔理论计算土压力的基本原理,运用考虑中间主应力效应的统一强度理论,对传统的土压力公式不能反映土体材料强度的中间主应力效应的公式进行了改进,推导了基于滑楔理论的土压力统一解公式,Coulomb和Rankine土压力公式为其特例.通过变换统一强度参数,可获得一系列的解.在工程运用中可根据土质和工程的实际情况,适当选择统一强度参数和应力状态来确定土压力的大小.