邹平火山岩盆地铜矿地质成因地球物理特征探讨     

王聿军  ;汤立成 《山东地质》2008,(9):19-23

邹平铜矿处于齐河-广饶深大断裂带南部的邹平火山岩盆地中,形成于破火山口火山通道充填的石英正长闪长岩岩颈中央上部,包括伟晶岩型铜矿和细脉浸染状斑铜矿床两种类型。前者矿体较小,但品位高;后者品位较低,但规模中等。含矿石英正长闪长岩等密度小、磁性弱,故在火山岩系中呈现高背景重力场上的重力低和杂乱高磁场背景中的低负异常,即“重磁同低”,且高极化。重磁同低异常区和高极化率异常带,是本区寻找铜矿的有利部位。  相似文献   

安塞油田谭家营油区长2油藏剩余油分布规律及潜力研究   总被引：1，自引：0，他引：1  

张志升  付国民  孟海峰  宋金旺  吴朝会  孙磊 《西北地质》2008,41(3)

以油藏数值模拟方法为主,同时结合综合地质分析方法对安塞油田谭家营油区长2油藏分小层进行了河流相低渗透储层剩余油成因类型、分布规律及剩余油潜力研究.认为井网未控制型剩余油、注采不完善型剩余油、厚油层顶部滞留型剩余油、层间干扰型剩余油是主要的剩余油成因类型;长21-2储量动用程度高,但剩余储量的绝对数较大,仍然是开发的主力层位,长21-3动用程度很低,但由于存在底水,底水锥进严重,需加强动用程度及开发控制.  相似文献   

创新工作机制完善监管体系提升首都城市建设安全质量管理和服务水平(摘选)     

北京建设委员会 《中国勘察设计》2008,(2):26-27,29

近年来,随着首都城市建设的快速发展,全市工程建设规模不断扩大,开复工面积保持在1亿平方米以上。特别是奥运、地铁等重点工程建设工期紧、工艺复杂、技术要求高、管理难度大,对我市安全质量监管工作提出了新的挑战。针对我市建筑业的形势和特点,我们按照建设部和市政府的工作要求,深入贯彻科学发展观,推进体  相似文献   

中美两国GPS检定规程的对比分析     

曹妙会  张志勇 《浙江测绘》2008,(1):7-8

本文介绍了中关两国的GPS接收机检定规程并做了对比分析,认为我国的GPS接收机检定规程是科学可行的。  相似文献   

塔里木盆地塔中低凸起地层水化学特征对不整合的响应          下载免费PDF全文

曾溅辉  吴琼  钱诗友  孔旭  马中良 《古地理学报》2008,10(5)

对塔中低凸起地层水化学特征与不整合之间关系的研究结果表明,地层水化学特征对不整合具有很好的响应。在遭受强烈抬升和剥蚀、之间形成不整合的奥陶系和志留系,以及紧靠不整合面附近的石炭系CⅢ油组,其地层水具有矿化度、Cl-含量、K Na 含量和r(Cl-Na)/rMg值相对较小,而HCO3-含量、rNa/rCl值和rSO42-×100/rCl值相对较大的特点,反映出地质历史时期大气降水的影响。在志留系与石炭系之间以及志留系与奥陶系之间的不整合面附近,地层水的矿化度、r(Cl-Na)/rMg值和B3 含量变小,而rNa/rCl值和rSO24-×100/rCl值变大,具有典型的遭受大气淋滤的地层水化学基本特征。  相似文献   

甘肃庆城庄19井区上三叠统延长组长82亚油层组 低渗透储层的地质特征     

谢渊  谢正温  孙虎  鲁洪江  刘国良 《地质通报》2008,27(6):844-854

长82亚油层组是甘肃庆城地区庄19井区上三叠统延长组中储集砂岩相对富集的层位,但砂岩低渗透性的特点显著,成为影响该区石油储产量增长的主要地质因素.结合前人的相关工作,通过钻井岩心观察、测井曲线分析、储层岩石实验测试等工作,详细地分析了庄19井区长82亚油层组低渗透储层的地质特征,认为沉积微相和压实作用、胶结作用是控制低渗透性储集砂岩发育和分布的主要地质因素,寻找以水下分流河道微相为代表的有利储集相带砂岩体是油气勘探的重要方向.  相似文献   

硫铅酸盐“S”型瞬凝水泥干法护壁堵漏技术研究          下载免费PDF全文

彭振斌 《探矿工程》1995,(2):41-42,60

介绍了硫铝酸盐“Ｓ”型瞬凝水泥干法者漏时使用的配方,阐述了输送工具和扫孔钻具的设计以及灌注工艺技术。  相似文献   

察尔汗盐湖低品位卤水自然蒸发试验研究   总被引：1，自引：3，他引：1       下载免费PDF全文

张兆广  祁燕 《盐湖研究》2006,14(1):17-23

察尔汗盐湖是一个以卤水钾镁盐矿为主的大型综合性盐类矿床,盐湖东部潜卤水水化学类型为氯化物型,从KCl等组份含量来看,属低钾高钠低镁的卤水。对该类型卤水进行自然蒸发试验,确定盐类结晶析出顺序和光卤石矿物的最佳分离点,取得光卤石矿的产率和光卤石中KCl含量等基础数据,以对该卤水工业利用性能作出评价。  相似文献   

Mobility of heavy metals from tailings to stream waters in local zinc smelting activities contaminated site     

Taoze LIU Yuangen YANG Bangyu LIU Xiangyang BI Feili LI 《中国地球化学学报》2006,25(B08):41-42

It has been found that stream waters were severely contaminated with wastes from a long-time smelting factory in Hezhang, Guizhou, China. The main sources of contamination are the smelting wastes stored in the open air and abandoned in the vicinity of stream. A method of lead isotope was adopted in order to identify relations between tailings and water contamination. Representative samples of tailings and stream sediments were collected. Mineralogical characterizations were conducted using XRD and TEM/SEM, while acid digestion was carried out for determining metal contents. BCR sequential leaching tests were performed in order to assess metal mobility. The tremendous ‘actual＇ and ‘potential＇ mobility of heavy metals indicates that the smelting waste and stream sediments present a considerable threat to the environment. Besides the chemical remobilization of heavy metals from the sediments and the reworking of riverbed sediments act as a secondary source of pollution. Also groundwater and stream water were sampled in specific locations and were measured.  相似文献   

Increasing of efficiency of desulphurisation processes of coals during thermal destruction     

Turchanina Oksana Satin Vladimir Derevyanko Aleksey 《中国地球化学学报》2006,25(B08):51-52

As is well known, a high content of sulphur in coals is an effect of the post-depositional history of coal seams and one of the most important criteria of its use as a fuel. Sulphur in coals can cause a serious environmental and technological problem during their utilization. This problem is very actual for the Donetsk Basin because 734 mined seams out of the total of 1009 （73%） are comprised of coals with sulphur content -2%. The chemical pre-treatment as a first stage in their processing is widely used in order to effectively obtain the thermal destruction products of coals （such as semi-coke, coke, adsorbents, etc.） and to simultaneously utilize coal wastes. Development in pre-treatment methods for high-sulphur, low-rank coals is especially desirable for reducing the sulphur contents of the solid products. The aim of the present work is to investigate the influence of coal pre-treatment on the yield and composition of thermal destruction products, and the sulphur distribution among different components of the coals of different genetic types by reductivity （low-reduced LRC and reduced RC coals）. The thermal behavior of the coals was studied by means of the Fisher method （heated to 520℃, at a rate of 7℃/min）. The composition of the semi-coking gas was investigated by means of a VTI gas analyzer. The coal samples were chemically treated directly before thermal destruction by the introduction of 1-% solutions of radical polymerization initiator AAD （acrylic acid dinitrile C8H12N4） and products of coal-tar distillation （absorber oil）. Coal pre-treatment increases the semi-coke yield and its coking ability, and changes the liquid/gaseous product ratio.  相似文献