导向钻进非开挖铺管技术

介绍了导向钻进非开挖铺管技术的工作原理，施工技术和工程施工实例，总结出一套导向孔轨迹设计和钻进方向控制的方法，并对我国的导向钻进非开挖技术的发展提出了建议。     

非开挖穿越武汉鲁磨路铺设网线工程实践

采用导向钻进技术斜穿武汉市武昌鲁磨路，铺设口径110 mm的3根网线护管，穿越总长度约为120 m。详细介绍了本次施工导向钻进、扩孔、铺管等工艺，最后对工程中的一些问题进行了分析。     

非开挖导向钻进实际轨迹的控制设计

非开挖导向钻进技术，具有施工速度快、适用范围广等优点，得到了广泛的应用。在实际钻进中，由于钻进在地下的不确定性，影响了导向钻进的顺利进行。到得钻进中当前点的顶角、方位角和孔深，通过均角全距法原理，可以近似地描绘出当前钻孔的空间实际轨迹，并确定钻头的位置。应用这一原理，同时运用VisualBasic语言和AutoCAD绘图工具相结合的方法，编制一套应用程序，可以直接绘制出当前钻孔轨迹，并可实现对钻孔轨迹的调控，从而保证导向钻进的顺利进行。     

非开挖导向钻进轨迹自动控制系统的研究

非开挖导向钻进技术以其施工速度快、适用范围广等优点，得到了广泛的应用。但在目前实际钻进中，对于钻孔轨迹的控制主要是依靠操作人员的经验进行判断，使得钻进速度和效率大大降低。本文通过建立钻孔轨迹的数学计算模型，并利用Visual Basic和AutoCAD实现了钻孔轨迹的可视化，同时将测得实际轨迹与预先设计轨迹在同一界面进行同点比较，纠正超出范围的误差，使钻进轨迹更好的接近设计轨迹，并能顺利穿越地下障碍物完成导向钻进过程。     

导向钻进非开挖技术在地下管线铺设中的应用

结合邯郸市集中供热管道工程实例,说明导向钻进非开挖在铺设地下管线施工中的成功应用,对导向钻进非开挖技术、导向孔轨迹设计、施工质量控制及施工效果等作了介绍与总结,为同类工程实践提供参考。     

《定向斜井与水平井钻井的地质导向技术》

本书分析了按最优剖面对定向斜井和水平井轨迹进行初级控制和高级控制的技术，给出了在钻井过程中借助于井底遥测系统进行电磁波测井和电阻测井的物理依据。阐述了地质导向技术的理论及用涡轮回转钻进法施工高质量定向斜井和水平井的地质导向工艺，讨论了深化水平井钻进的环境保护技术与工艺。书中还介绍了用地质导向技术建设水平井的实例及其开采运营的经验。     

导向钻进技术在湖南湘潭某通信管网建设工程中的应用

以湖南湘潭某通信管网建设工程为例，介绍了采用导向钻进非开挖技术进行铺管建设中导向轨迹的设计方法，以及根据工程情况确定所需的最大回拖力，并针对工程特点提出几项施工质量保证措施。     

螺旋导向钻进系统提高管道安装质量

本文简要介绍了采用导向螺旋钻进系统钻进粘土层进行管道安装,该技术结合螺旋导向和顶管施工技术进行管道安装,可以提高短距离管道安装的精度和施工质量。     

非开挖导向跟管钻进技术在地铁暗挖车站管棚工程中的应用

通过非开挖导向跟管钻进技术在地铁暗挖车站管棚工程中的应用实例,阐述了非开挖导向跟管钻进技术在管棚铺设中的相关设备、仪器、施工等方面的技术特点与技术措施.     

水平螺旋钻进光学成像导向技术及智能化改进方案

新型城镇化建设和城市地下建设步伐的加快促进了我国地下管网建设的发展,水平螺旋钻进作为最常用的非开挖铺管技术在我国的应用越来越广泛。水平螺旋钻进导向技术长期依赖于微型隧道激光导向,成本高昂,操作复杂。在研究国内外非开挖钻机导向技术的基础上,对螺旋钻进导向技术进行详细的研究并设计了一套利用光学成像技术进行导向的设备。通过室内实验与施工验证了该设备的可行性,同时针对实验及施工中出现的问题提出了进一步的解决方法与智能导向技术思路。     

CSAMT 法在辽西康杖子区深部探矿中的应用

可控源音频大地电磁法(CSAMT)具有探测深度大、横向分辨率高、抗干扰能力强的特点,在深部找矿勘探中有着重要的指导意义。肖家营子铜钼矿床是辽西地区一个大型矽卡岩型金属矿床,大部分矿体是隐伏矿体,矿区外围的康杖子区与本区有相似的成矿地质环境,成矿地质条件优越.矿体与围岩电性差异明显,通过应用CSAMT,矿体具有低电阻特点,根据成果推断解释,对深部有利成矿部位进行了钻探验证,取得了理想的探矿效果,在矿区外围取得第二深度空间找矿重大突破。     

Geography in general education in Nigeria

This paper traces the development of geographic education in Nigeria and examines the views of geographers, other academics, students and the public at large about the importance of geography. Geography's value is immense despite the non-professional nature of the discipline. Nevertheless, there is a need to define geography's status and ensure career prospects for students. The Nigerian Geographical Association (from classroom teaachers to top geographers) must promote geography, improve its status in schools and universities, and continuously restructure its content and methods to address pertinent social needs.     

Trends in landslide occurrence in Nepal

Nepal is a mountainous, less developed kingdom that straddles the boundary between the Indian and Himalayan tectonic plates. In Nepal, landslides represent a major constraint on development, causing high levels of economic loss and substantial numbers of fatalities each year. There is a general consensus that the impacts of landslides in countries such as Nepal are increasing with time, but until now there has been little or no quantitative data to support this view, or to explain the causes of the increases. In this paper, a database of landslide fatalities in Nepal has been compiled and analysed for the period 1978–2005. The database suggests that there is a high level of variability in the occurrence of landslides from year to year, but that the overall trend is upward. Analyses of the trends in the data suggest that there is a cyclicity in the occurrence of landslide fatalities that strongly mirrors the cyclicity observed in the SW (summer) monsoon in South Asia. Perhaps surprisingly the relationship is inverse, but this is explained through an inverse relationship between monsoon strength and the amount of precipitation in the Hill District areas of Nepal. It is also clear that in recent years the number of fatalities has increased dramatically over and above the effects of the monsoon cycle. Three explanations are explored for this: land-use change, the effects of the ongoing civil war in Nepal, and road building. It is concluded that a major component of the generally upward trend in landslide impact probably results from the rural road-building programme, and its attendant changes to physical and natural systems.     

花岗岩地区地下水水文地质特征分析

通过对泰安市岱岳区花岗岩地区地下水的形成条件、地下水类型、分布状况、水文地质特征以及地下水补给、径流、排泄条件的分析,指出了花岗岩地区供水方向。     

Recent advances in aquaculture in Japan

Conclusions During the last ten years, aquaculture, especially mariculture has undergone remarkable expansion to counter-balance the gap between the supply and demand of fishery products in Japan. Its expansion has also been supported by the traditional preference of the Japanese people for seafood. Mariculture is now being forced to change its structure due to adverse economic circumstances such as the rise in the cost of energy, feeds and other materials for culture, low market prices, deterioration of environmental conditions, and many other factors. Before these constraints can be resolved, advanced scientific knowledge and technologies must be integrated to develop new types of aquaculture. Expansion of maricultural activities to more open-sea and off shore areas would be one route to follow. Technologies for the development of formulated diets not only for young but also for adults and larvae, establishment of feeding standards, prevention of epizootic diseases must support the establishment of modern aquaculture.The culture-based fisheries, or marine ranching, is becoming a subject for further development in Japan. Much research work has been conducted with a great degree of governmental support. Establishment of a net work of seedstock production farms has made it possible to carry out releasing experiments on a large scale. A newly integrated restoration system could be developed on the basis of these experiments, even though the profits resulting from the artificial restoration of stocks is not thouroughly verified at present. The commencement of a national scheme for culture-based fisheries would be a manifestation of the enthusiasm of the Japanese fish industry.     

2010年的美国铀矿业

2010年,美国铀矿总共施工7 209个钻孔,总进尺1 493 520 m;生产铀1 628.55 t;铀矿业总支出费用为2.773亿美元,其中铀矿地勘费支出为3 450万美元,占铀矿业总费用的12.44%。铀矿地勘钻探费用为4 460万美元,占铀矿业总费用的16.08%。     

地下水环境中的硫代砷研究进展

硫代砷是富硫化物地下水中砷的重要形态,对环境和人类健康有潜在威胁。目前硫代砷研究程度尚低,本次主要针对国内外地下水（地热水）中硫代砷的存在形态,水文—生物—环境地球化学过程,样品保存,定量检测方法等方面进行研究。结论如下:pH, 氧化还原电位,硫化物含量和微生物作用等是影响地下水中硫代砷稳定存在和形态分布的重要因素。含铁矿物能与水中的硫代砷形成配位键对其进行吸附,吸附性普遍弱于（亚）砷酸盐,因此,地下水中硫代砷可能表现出更强的迁移性。用于硫代砷检测的自然水样在采集中可采取过滤,速冻,厌氧和低温短期保存的操作流程,以减缓该形态的转化甚至消失。色谱联用ICP-MS系统可用于自然水样中硫代砷的分离定量检测,紫外—可见分光光度法和X射线吸收光谱法在不同场景下也可对硫代砷进行定量和表征分析。地热水和浅层地下水中均可能存在硫代砷,由于水样中硫代砷的不稳定性,室内检测和分析难以准确反映现场过程,因此,野外样品保存技术和现场检测方法的更新可能在未来有更大研究空间,值得进一步探索。     

环境地球化学研究近十年若干新进展

环境地球化学学科在中国生态文明和美丽中国建设、国际环境公约履约及过去全球变化研究中发挥着越来越大的作用.本文简要回顾了中国过去十年在环境地球化学领域的部分研究进展,介绍了汞、持久性有机污染物和其他重金属污染物长距离传输研究进展;总结了汞、镉、锑、铊等非传统稳定同位素在地表生物地球化学循环过程中的同位素分馏规律及污染来源...     

MapSUV系统在惠民县土地勘测定界中的应用

该文介绍了土地勘测定界的专业背景知识及MapSUV的相关信息,阐述了MapSUV系统在惠民县土地勘测定界的应用,以及外业获取数据及内业处理的主要工作方法,最后对该系统在土地勘测定界中的应用前景进行了展望。