我国东南沿海干热岩赋存前景及与靶区选址研究

干热岩资源是未来重要的清洁型能源,干热岩资源靶区选址是进行干热岩资源开发利用最基础的工作。本文在综合国内外相关干热岩开发项目的基础上,系统总结了干热岩选址的地热地质学指标,并对我国东南沿海地区的干热岩赋存背景进行论述,选取了广东阳江新州、广东惠州黄沙洞、雷琼断陷盆地、海南陵水等几个地区作为我国东南沿海干热岩开发的重点潜力靶区,在综合分析各靶区深部地热地质背景、深部热异常的基础上,建立了研究区深部温度场模型,进行了干热岩资源靶区选址对比研究,对下一步优先勘查靶区及勘查方案提出了建议。     

湖南瑶岗仙钨矿床地质特征及成矿模式探讨

瑶岗仙钨矿成矿过程中构造岩浆活动频繁,地壳中的W、Mo等成矿元素在各时期岩浆-成矿活动中逐步富集,最终形成多期次、多成因的瑶岗仙黑白钨矿床。在国家危机矿山找矿项目的支持下,综合研究认为瑶岗仙钨矿的成矿受到了成矿岩体、区域构造及含矿围岩的控制和影响,具有典型的、多元化的＂五层楼＂＋＂地下室＂成矿模式,同时深部的脉型钼矿、岩体型矿床（化）类型的＂地下室＂将是未来找矿的较好方向。     

Pyrite Surface after Thiobacillus ferrooxidans Leaching at 30℃

In order to investigate the effect of Thiobacillus ferrooxidans on the oxidation of pyrite, two parallel experiments, which employed H2SO4 solutions and acidic solutions inoculated with Thiobacillus ferrooxidans, were designed and carried out at 30℃. The initial pH of the two solutions was adjusted to 2.5 by dropwise addition of concentrated sulphuric acid. The surfaces of pyrite before exposure to leaching solutions and after exposure to the H2SO4 solutions and acidic solutions inoculated with Thiobacillus ferrooxidans were observed by scanning electron microscopy (SEM). There were a variety of erosion patterns by Thiobacillus ferrooxidans on the bio-leached pyrite surfaces. A conclusion can be drawn that the oxidation of pyrite might have been caused by erosion of the surfaces. Attachment of the bacteria to pyrite surfaces resulted in erosion pits, leading to the oxidation of pyrite. It is possible that the direct mechanism plays the most important role in the oxidation of pyrite. The changes in iron ion concentrations of both the experimental solutions with time suggest that Thiobacillus ferrooxidans can enhance greatly the oxidation of pyrite.     

Effect of Mineral Dusts on the Growth of Silicate Bacteria S35

In order to compare the chemical compositions and physical properities of dusts on silicate bacteria S35, the chemical compositions of six kinds of mineral dusts have been analyzed and the changes of pH value, glucose （GLU）, electrolyte and Mn, Si, Fe before and after the dusts reacted with silicate bacteria S35 have been measured. The SEM analysis has been used to study the bacterial form and interface action status in the course of reaction between dusts and bacteria. The results show that these mineral dusts have different effects on experiment bacteria. Therefore, it is concluded that the effect of mineral dusts on silicate bacteria has correlation with the chemical compositions and physical properities of dusts.     

垦利县土地盐渍化及其发生变化趋势分析

垦利县位于黄河三角洲扇缘地区,具有典型的三角洲地貌。土地盐渍化是垦利县土地质量问题的根源,是影响土地生产力发挥的最根本原因。分析研究垦利县土地盐渍化发生的原因、现状及变化趋势,对指导当地土地资源的合理开发与利用具有重要的意义。     

协同学在水资源可持续利用评价中的应用研究

协同学是关于开放、非平衡系统的理论,而水资源系统正是一个开放的、远离平衡态的复杂系统。以湖州市为例,以两年为步长,选取2011年、2013年、2015年水资源开发利用指标、经济社会指标,将协同学应用于湖州市水资源可持续利用评价。研究结果表明,将协同学应用于区域水资源可持续利用评价是可行的,可为区域水资源可持续利用评价以及区域水资源承载能力判别开辟新途径。     

川北江油-广元-带二叠系-三叠系界线粘土岩稀土元素地球化学特征及其地质意义

选择川北江油滚柴坡和广元上寺、杨家湾二叠系-三叠系界线剖面为研究对象,利用中子活化法分析了粘土岩样品中稀土元素的组成.通过对稀土元素丰度、标准配分模式和特征参数的比较研究,探讨了稀土元素地球化学与自然环境突变的关系.结果表明,各剖面的?Eu、?Ce、∑LREE/∑HREE-∑REE、Eu/∑REE-∑LREE/∑HREE、球粒陨石标准化曲线图解和La-Th-Sc三元图解一致反映了界线事件的存在及界线时期稀土元素的地球化学特征与环境突变的关系.同时,通过对3条剖面稀土元素地球化学特征与标准剖面的对比研究,认为P/T(二叠系/三叠系)界线事件时期环境不仅受中酸性火山作用的影响,还可能受(碱性)基性-超基性或地外溅射物的影响.研究结果为从元素地球化学的角度探讨这一重要地质时期的灾变事件提供了新的资料.     

内蒙古乌拉特中旗恐龙足迹研究

2006年内蒙古地质环境监测院在乌拉特中旗海流图镇西10公里处发现一恐龙足迹化石点。由于恐龙足迹产地的地层研究程度较低,因此这批恐龙足迹的研究在地层年代确定、以及恢复古环境方面具有重大意义。共识别出脊椎动物足迹化石119个,其中大部分为恐龙足迹,包括兽脚类恐龙足迹:玫瑰实雷龙足迹(Eubrontes glenrosensis)、海流图卡岩塔足迹(Kayentapus hailiutuensis ichnosp.nov)和鸟脚类恐龙足迹中型异样龙足迹种(Anomoepus intermedius),以及鳄类足迹的蛙步足迹,其中海流图卡岩塔足迹(Kayentapus hailiutuensisichnosp.nov)为新种。根据足迹形态的对比,推断造迹恐龙分别为兽脚类恐龙中的巨齿龙类(Megalosaurus)和双脊龙类(Dilophosaurus)以及鸟脚类恐龙棱齿龙类(Hypsilophodont)。通过对比发现乌拉特与波兰Opatw附近的Podole地区的早侏罗世的足迹组合十分相似,因此建议将乌拉特中旗海流图的足迹及含足迹地层的年代归入侏罗纪早期。根据对足迹产地附近的地层剖面的研究以及足迹组合中含大量鸟脚类恐龙足迹的事实推断:侏罗纪早期研究区古环境为山涧河流环境,雨量充沛。     

模糊理论在遥感图像分类中的应用

利用2000年假彩色遥感图像,采用模糊C-均值法中的欧氏距离和马氏距离法对崇明东滩的遥感图像进行了处理。通过对白色覆盖物、未耕种土地、一号水稻田、水体和二号水稻田的分类结果表明,欧氏距离的聚类结果优于马氏距离。     

Application of TSD tunnel seismic prediction system in karst area

TSD is one of the classical methods of tunnel seismic prediction based on higher accuracy multi-wave multi-component seismology. The working principle of the TSD and an application example of the TSD on tunnel prediction in Chongqing are introduced in this paper. This system has two ports for speed signal and acceleration signal, and the equipment is more portable and easy to use. According to the application results we can conclude that the TSD prediction system is accurate and it has the wide application prospect in tunnel seismic detection.