内宜高速公路滑坡治理浅析

介绍了内宜高速公路K40＋300-K40＋398段滑坡治理方案、施工工艺及遇到问题的处理方案。在滑坡治理中采用了重力式挡墙、锚索施工、格构梁浇注及生物治理工程、农灌区防渗等工程形式．     

广西龙胜滑石矿乡镇公路改线段K57＋740～＋830段滑坡分析与治理

论文以广西龙胜滑石矿乡镇公路改线K57＋740～＋830段滑坡为实例,简要说明了滑坡变形、成因的基本情况。据此,提出了滑坡的加固方案,由于治理过程中冰冻天气的影响,文中对滑坡原设计的变更进行了说明。通过对桩体位移的分析,验证了设计的合理性,并结合深孔位移监测对治理效果进行了分析。由于工程实例处于狭小的场地环境以及特殊的冰冻天气下,文中对类似的工程治理具有一定的参考价值。     

高速公路滑坡治理方案优化——以延吉至图们中里滑坡为例

中里滑坡位于延吉至图们高速公路右侧，由于高速公路路基开挖切断原山脊形成滑坡。根据该滑坡的工程地质条件和滑坡特征，提出三种治理方案，并优化出以抗滑桩为主多种方法相结合的综合整治措施为最佳方案，将其应用于中里滑坡治理中，经过实际施工监测及滑坡治理效果分析证明，该方案经济、可行、治理效果好。     

无粘结预应力锚索工艺施工方法

无粘结预应力锚索是一种新工艺，在水利工程及岩土工程中得到了较广泛应用，在三峡库区地质灾害治理一、二期工程中得到了初步应用，并取得了显著效果。本文以三峡库区秭归县马槽岭、北门沟等滑坡治理工程为例，介绍无粘结预应力锚索的施工工艺，以便于这种新工艺能广泛应用于滑坡治理工程。     

云南省祥(云)-临(沧)公路红土坡隧道变形原因及加固方案

云南省祥(云)-临(沧)公路红土坡隧道，在施工过程中变形严重，洞内数次冒顶、产生地面陷落，并诱发滑坡，严重影响了施工进度并造成较大经济损失。文章根据现场勘查及变形监控量测资料，详细论述了隧道变形特点，从地层岩性、构造、地应力条件、地下水作用、施工工艺、滑坡影响等方面综合分析了隧道变形原因。红土坡隧道变形是软弱的地层岩性、地应力条件改变、地下水作用、施工工艺以及滑坡偏压等各种因素共同作用的结果。且隧道变形诱发滑坡，滑坡又促使隧道进一步变形。基于此，文章提出了首先对滑坡进行支挡，再对隧道围岩进行加固的整治思路，并提出具体工程方案。整治工程实施后，红土坡隧道变形已得到完全控制，取得良好的治理效果。     

预应力锚索在曹家湾滑坡治理工程中的应用

在黄石曹家湾滑坡治理工程预应力锚索施工中，通过改进施工工艺，采用风动潜孔锤偏心跟管钻进技术，合理安排施工工序，取得了较好的治理效果。     

昌吉庙尔沟滑坡稳定性分析及治理措施

在对庙尔沟村HP1滑坡详细调查与测绘的基础上,对滑坡的稳定性及治理工程措施进行了深入分析。结果表明:该滑坡在天然工况下稳定;暴雨工况下欠稳定;地震时基本稳定。潜在滑坡在暴雨、地震时稳定。根据分析,最后提出了截排水工程、抗滑桩板墙、重力式挡土墙及警示牌等防治方案。该方案既能消除滑坡地质灾害的危害,又能减少地质环境破坏,并且具有施工工艺成熟的优点。     

浅谈抗滑桩及预应力锚索在边坡治理中的综合应用

论文较详细地论述了郴州市107国道一住宅楼旁公路边坡滑坡治理工程的设计及施工概况。重点是抗滑桩及预应力锚索的联合应用，获得了治愈滑坡的良好效果。文中分别介绍了边坡治理工程设计的原则及其治理措施－边坡开挖、边坡加固、边坡排水及边坡环境保护；抗滑桩的施工工艺－成孔步骤、钢筋笼的制做与安装、抗滑桩桩芯砼浇注，预应力锚索的施工工艺等内容。论文不仅对治理工程进行了恰如其分的效果评述，并提示同行应注意的问题。     

抗滑桩及预应力锚索在八尺门滑坡治理中的应用

八尺门滑坡是福宁高速公路上的大型滑坡治理工程，滑坡分成3个，分别采用不同的抗滑坡桩及预应力锚索进行治理。介绍了治理方案的实施过程。     

预应力锚固技术在昆河线402滑坡治理工程中的应用

昆河线402+200～450m路段的地层是元古宇变质云母片岩,历次的构造运动及长久的风化作用,使该路段地表形成不稳定的堆积层滑坡体,虽然做过数次抗滑挡墙治理,但路基仍然发生多次滑坡。对滑坡成因进行综合分析,决定采用预应力锚索板框架工艺作为该项处滑坡治理方案。通过对预应力锚固设计与施工工艺的分析,说明该技术的应用在滑坡治理工程中的作用。工种治理中进行了如锚索抗拔试验、压浆柱质量检验和钢绞线极限强度试验等一系列测试,结果证明,该技术的各项技术指标均达到或大于设计要求,治理经验可供同类工程借鉴。     

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。