音频大地电磁测深法在川西地热勘查研究中的应用

在川西高原地热资源的勘查中应用音频大地电磁测深法,研究地热与构造（断裂或断层）的关系,地热的分布特点,并进行分区,分析热储层的分布特点和浅部热水的形成机制,为川西地热的综合研究提供重要理论依据,实践证明音频大地电磁测深法是勘查和研究地热的一种有效手段。     

广域电磁法在福建洪塘镇地热勘查中的应用

广域电磁测深法具有快速高效的特点,对地电结构较差、埋深较大地区,具有很好的抗干扰和分辨能力.通过在福建洪塘镇工业密集区周边实施1∶2.5万重力测量,初步圈定地热靶区覆盖层下基底隆起、断裂与凹陷构造的位置,缩小地热靶区位置,进而布设剖面线位置,开展广域电磁测深揭露深部断裂与地层岩体的的空间展布情况,指明了地热靶区的有利热...     

综合物探在冀东北部山区地热资源勘查中的应用

冀东北部山区地热资源丰富,利用综合物探方法对查找深大断裂构造,圈定地热异常范围有着良好的效果。本文以冀东北部山区某项地热勘查项目为研究对象,在研究区实施了以可控源音频大地电磁技术（CSAMT）与视电阻率测深为主的勘查手段,两种技术方法的应用大致揭露了本研究区构造走向及位置,查明2条主要控热导热构造F01、F02。辅以激电测深技术,加之6参数对含水层与断裂的良好反应,基本确定了热储位置及空间分布规律。圈定了地热异常区与地热资源可开发利用的范围,为下一步地热地质勘查与钻探布孔工作提供了科学依据。     

视电阻率测深和音频大地电磁测深在坦桑尼亚某金矿区探测效果的对比分析

隐伏矿产勘查是我国乃至世界现今的主要任务,电阻率测深法和大地电磁测深法是寻找深部矿和隐伏矿的主要工作手段;根据大功率视电阻率测深与音频大地电磁测深在坦桑尼亚某金矿区的实际应用,结合钻孔地质剖面对两者的测量结果反演后进行了对比研究,分析了两种测深方法在构造蚀变岩型金矿上各自的探测效果,研究认为:采用视电阻率测深和音频大地电磁测深可以推测地下构造带电性分布特征、地质结构、构造产状及矿(化)体的赋存空间,音频大地电磁测深对矿区深部构造形态反映效果较好,显示了构造蚀变带的垂向延伸情况;视电阻率测深在反映中、浅部地质体特征方面效果较好,并进一步提高了对大地电磁异常的横向分辨能力,能够为布置钻探工程提供更加充分的依据。     

EH4电磁测深在煤层采空区勘察中的应用

EH4电磁法是大地电磁测深技术之一,它利用天然或人工电磁场的测量,求取地下介质电阻率的分布规律,进而达到解决工程建设中的有关问题,如地下岩性分带、地层划分、断层破碎带探测、地下采空区等工程地质问题,现已在许多领域得到应用,并取得了良好的应用效果。文中介绍了EH4电磁测深技术的基本原理、测试技术及资料处理和成果分析等。最后给出了EH4电磁测深法勘察的一个实例并总结了该方法的几个探测优势。     

综合物探地质解释确定苏北宝应射阳湖地热区目标热储

苏北盆地建湖隆起赋存丰富的地热资源,通过综合物探地质解释确定热储层对建湖隆起中段射阳湖地区地热资源勘探具有重要意义。本文采用广域电磁法、重力勘探及大地电磁测深法,查明了宝应县射阳湖镇6 km²范围内地热地质特征,从源、通、储、盖4个方面开展地热地质条件分析,结合地热成因分析优选钻井点位,设计探采结合井1口(设计井深2200 m),经钻探工程验证,终孔于寒武系碳酸盐岩地层(终孔深度2060 m),井口水温75℃,降深6.39 m出水量2095 m³/d。实践证明,综合物探方法在地热资源勘查工作中,可提供热储层、导水导热构造、盖层等关键地热地质信息,为地热钻井设计提供重要依据。     

多种电磁法在地热资源勘查中的应用

在地热调查中,电磁法以探测深度大、不受高阻层屏蔽影响、可以有效圈定地下水分布范围而被广泛使用。为充分利用天然资源和保护自然环境,查明生态区的地热资源,本文采用大地电磁、瞬变电磁和大地电场探测三种方法对生态区地下水分布情况进行了勘查,相继查明了地层岩性变化、构造空间等分布情况,三种方法相互印证。圈出多层段的有效储热层,在预定位置进行钻孔验证后,获得了低温热水,取得了良好的地质效果,表明物探方法合理搭配、综合使用能够有效提高效率和准确率,也为类似地区寻找地热水提供了可借鉴的案例。     

CSAMT测深和重力测量技术在新疆火烧云铅锌矿的应用效果分析

针对矿产勘查深度逐渐加大、勘查区逐渐向工作程度相对较低、情况更加复杂的浅覆盖区、山区转移,常规、单一的物探方法在勘探深度及精度等方面都无法满足勘查的需要。文章提出可控源音频大地电磁测深法(CSAMT)与重力测量的技术组合,并将其运用于新疆和田县火烧云铅锌矿勘查实践中。CSAMT测深和重力测量能较好地反映铅锌矿体赋存空间及其顶底板围岩的埋深,铅锌矿体显示低阻高重力异常,中高阻异常围绕低阻高重异常周边分布,依据钻探工程对隐伏矿体进行控制,对应CSAMT测深剖面电阻率等值线区间,大致推断了控矿地质体的厚度和产状,建立了矿床地球物理找矿标志,为矿床勘探及资源量扩大提供了重要的地球物理依据。     

南水北调西线工程区活动断层CSAMT技术探测研究

结合南水北调西线工程调水区桑日麻断裂的探测，就应用可控源音频大地电磁测深(CSAMT)进行断层深部特征的探测问题进行了分析和研究。研究结果表明，可控源音频大地电磁测深法可用于探测断层深部的发育情况，为分析工程地质问题提供基础性资料，并且可以很好地指导钻探工作的布置。     

高频大地电磁测深法在崤山隧道勘测中的应用

采用高频大地电磁测深法(EH-4)对崤山隧道进行了物理勘探,并辅以钻探验证,有效的探测了地下异常分布情况,研究表明高频大地电磁测深法在深埋隧道勘察中对确定宏观地质构造框架具有重要借鉴意义,值得在今后的工作中进一步推广。     

污泥制砖存在问题浅析

污泥制砖符合国家的环保政策,但在技术方面还待进一步创新和突破。为此分析了污泥制砖在技术方面、环保方面和社会大众认可方面存在问题及相应的改进措施。     

干旱区绿洲环境下的新疆小城镇建设投资

一、研究区域基本现状新疆地处欧亚大陆腹地,地貌轮廓表现为“三山夹两盆”,山地与平原的面积大致各占50%,镶嵌于戈壁沙漠的绿洲仅有7万平方公里。新疆土地面积166.49万平方公里,占全国总面积的六分之一。气候干旱,荒漠广布,是中国最大的干旱区,是亚洲干旱核心区,也是世界上著名的干旱区之一。水资源短缺,生态极度脆弱。新疆2004年底有1950万人,人均GDP已经超过了1000美元,城镇化进入了快速发展阶段,特别是小城镇的发展速度较快。但新疆特殊的干旱区绿洲环境,使得小城镇的发展存在许多问题。一是城镇规模小而散,基础设施配套差,城镇集散和…     

Levels of manganese in the urine of female farmers in non-polluted regions in Japan

Nearly 1500 urine samples were collected from female farmers in eight regions widely scattered in the islands of Japan in the winter of 1987-1988. The samples were analysed for manganese by wet ashing and flameless atomic absorption spectrophotometry under strict quality control. The values observed after adjustment for a specific gravity of 1.016 were distributed log-normally with a geometric mean of 0.65 microgram/l and a geometric standard deviation of 2.47. There was no effect of aging or any effect of smoking on the urinary manganese concentration. The inter-regional difference may be present but not yet conclusive. As no sex difference was observed in a previous study, it may be possible to deduce that the value may possibly stand for the "background" level of both men and women, either smoking or non-smoking, among the general Japanese population. The observed value is discussed in comparison with values reported in the literature.     

Intersections of inequality in homeownership in Sweden

Abstract

Inequalities relating to ownership of housing have become a major issue de jour in many Western societies. This article examines how the distribution of homeownership in Sweden relates to two factors widely seen as significant to such inequalities, namely parental tenure status and place of birth. We use longitudinal registry data to examine the bearing of these two factors on individual-level tenure progression since the beginning of the 1990s for persons at different stages of their housing careers. We extend existing understandings of Swedish homeownership patterns by demonstrating that inequalities relating to place of birth and parental tenure intersect with one another in ways that substantially advantage certain subgroups while disadvantaging others, and by demonstrating that experiences of entry into homeownership have in recent years been changing in markedly different ways for these different subgroups. Overall, Swedish homeownership inequalities, far from dissipating, appear to be hardening along existing lines.     

Typification of Fires in Buildings in Spain

Although the Dirección de General de Protección Civil (DGPC), an agency of the Spanish government, has been responsible for the collection of data and the statistical analysis of fires since 1985, it has not as yet issued any reports. It is true that a couple of studies have been made, but in neither case did they use a standardized methodology but relied simply on the heterogeneous information provided by the fire brigades which cooperated in the studies. At that time Spanish fire brigades did not have special units for professional fire investigation, nor was the information derived from standardized methodologies suited to research purposes. In addition, information was extremely scarce and basic, focussed only on the fire, the use of the building and personal data of the victims. In this context, the project for a Fire Investigation Unit in the Fire Brigade of Málaga (the sixth largest Spanish province in inhabitants) was set up. Although inspired in the methodologies used in the USA and in the UK, the aim was to create a customized methodology for the first scientific investigation of fires in Spain. Our research was conducted in 2007. Using the methodologies of the USA and the UK, our own methodological approach and the Spanish regulations, we drew up a questionnaire with 110 variables arranged into 6 modules. We studied 96 fires out of the 154 emergency fire calls received in 2007, having omitted some emergency calls for various reasons. Our results revealed that it was necessary to generalize the installation of fire extinguishers in residential buildings, to train the general public in the use of these devices, to promote the use of fire and smoke detectors in residential buildings, to encourage the inspection and control of old electric installations and to monitor the new installations, to generalize the implementation of emergency and evacuation plans and to design new systems and materials for the cabinets where hand-held extinguishers are stored.     

莳花在城市绿化中的应用

目的:花化、香化、彩化已成为城市园林绿化的主要趋势,也是为满足人们对环境要求越来越高的一种心境。方法:选择采用莳花能表现出品种繁多,色彩艳丽等不同的方式,从而能在很大程度上丰富了植物造景的层次感要求。结果:能使其达到美化环境、增添节日气氛、提高绿化品质等方面有着突出的作用。结论:莳花造景对城市的美化可达到立杆见影效果,从而提高城市的形象和品位。     

分光光度法测水中余氯

介绍了用双硫腙分光光度法测定水中余氯的新方法，阐述了其测定试验过程，根据试验结果显示，其结论符合国家标准，表明该方法可用于自来水等样品中余氯含量的测定，结果比较准确。     

日本城市浅层地下空间利用的新成就

本文结合日本川崎市站前广场和神户市哈巴兰德地区的立体化再开发，分析介绍当前日本浅层地下空间开发利用的成就和特点。     

遗传算法在边坡稳定系数计算中的应用

边坡稳定性的关键问题是确定最危险滑动面(潜在最危险滑动面)和边坡的稳定系数。国内外一般是采用先假定边坡滑移模式,然后近似确定最危险滑动面,再求近似的边坡稳定系数的方法来分析边坡的稳定性,但假设的边坡滑移模式难以反映边坡滑移的实际状态。因此本文探索利用遗传算法搜索最危险滑动面,并得到最小稳定系数及对应的最危险滑动面曲线,取得了较好的效果。     

山地村镇建设在中国城市化发展中的地位

一、中国山地的重要性 山地其在《地理学词典》中的定义是:“许多山的通称,由山岭和山谷组成。其特点是具有较大的绝对高度和相对高度,切割深,切割密度大……”,在《中国百科全书》中又称“广义的山地包括山、高原和丘陵三部分”。在本论文中,“山地”是一个有关建设用地的概念。它不仅包括其地理学上的含义,而且也是一个广义的山地概念,即同时代表山地,高原和丘陵地带,不论其是在坡地或局部平地上。