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DharmalingamVENUGOPAL 《山地科学学报》2004,1(1):74-80
The Nilgiri Mountains of south India is considered unique by anthropologists, geologists, climatologists, botanists as well as tourists. It has remained a subject of constant study and research over the last two centuries. Man-nature balance had continued undisturbed in the Nilgiris for thousands of years until the early 19th century when it became a British colony attracting, in due course, various developmental activities. Subsequently, the Nilgiris and its popular hill stations emerged as favourite places for the British population in India for rest and recuperation, game and for raising commercial plantations. In the process, the traditional indigenous crops were replaced by “English“ vegetables and the natural forests gave way to commercial plantations of coffee, tea and other exotic species of trees. 相似文献
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2008年5月12日14时28分,四川省汶川县发生8．0级大地震!一瞬间,山崩地陷,美丽的家园成了废墟;房倒屋塌,多少人被埋在了地下;一时间,灾区人民缺水、缺粮、缺药…… 相似文献
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西安翠华山山崩地质遗迹资源保护 总被引：5，自引：3，他引：5
文论述了西安翠华山山崩地质遗迹资源保护的目的，进行了保护分区，将其分为核心保护区、缓冲区和视域保护区三个区，重点分析了核心保护区的保护现状，并在此基础上提出了相应的保护内容和对策，以实现山崩地质遗迹资源的可持续利用和发展。 相似文献
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分析了现有灾异史料所覆盖时段（1803－1958年）西藏水灾的时空变化特征。研究指出：①1803－1958年，西藏水灾发生（县）次数波动比较大；19世纪40－80年代为西藏的水灾多发期；1924、1954年为严重水灾发生年；②西藏水灾空间分布差异显著，主要分布在“一江两河”地区。其中，日喀则、山南地区的水灾（县）次最多，其次为拉萨市、林芝地区，昌都、阿里、那曲地区则水灾发生相对较少；③高强度的持续降水为西藏水灾发生的关键诱导因子，河流暴涨、漫溢、改道为重要媒体，山崩、雪崩、山洪及泥石流等要素为特定地貌条件下的主要致灾因子，雹灾、地水上涌等也是不容忽视的致灾因子；④19世纪40－80年代西藏气候湿润。 相似文献
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<正>石门水库集水区位于台湾北部淡水河支流大汉溪中上游,集水区面积763.4 km~2。研究以多变量分析中的罗吉斯回归(logistic regression)方法进行山崩潜感分析,绘制山崩发生机率图,供集水区山崩潜势暨土砂灾害评估。山崩潜感分析系以2004年艾利台风诱发的浅层滑动型山崩数据,选取岩性、坡度、坡度粗糙度、地形曲率、相对坡高、全坡高、植被指 相似文献
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一泛论什么是工程地质学?牠是工程与地质两种科学间的一架桥梁,是这两种科学间溶和的一个边缘。简言之,工程地质学就是把地质学的知识与研究方法应用到土木工程,使共达到更为理想的‘经济’与‘ 相似文献
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Zonal distribution of the erosion-landslide and soil micromorphological features in purple hilly region 总被引：3，自引：0，他引：3
HEYurong LIAOChaolin XUPei ZHANGBaohua 《山地科学学报》2005,2(1):42-49
In the purple hilly region, erosions and landslides are all serious, and it is of great scientific value and practical significance to study their formation mechanism and distribution features there.In this paper, soil micromorphological methods and techniques were used to study the erosion zonal distribution in the region. The results indicated: (1)According to erosion process, the spacial distribution zones of the erosions and landslides in the purple hilly region with different solums were divided into scouring erosion zone, transport-diffusion zone, rocks and soil turbulence zone and sediment-bury zone; (2) The soil micromorphologic taxonomic feature identifying different erosion-landslide zone were found by studying the soil micromorphology of erosive zone in purple hilly region; (3) As for the erosion-landslide formation in the region, besides the external factors, the internal factors were found more important and favorable for landslide formation through the studies on the micormorphologieal features of slide soil. 相似文献
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Geomechanics of hazardous landslides 总被引：1，自引：1，他引：0
POISEL Rainer BEDNARIK Martin HOLZER Rudolf LISCAK Pavel 《山地科学学报》2005,2(3):211-217
A catalogue of possible landslide initial failure mechanisms, taking into account the geological setting and the geometry of the slope, the joint structure, the habitus of the rock blocks, as well as the mechanical behaviour of the rocks and of the rock mass （deformation and strength parameters）, is presented. Its aim is to give geologists as well as engineers the opportunity to compare phenomena in the field and phenomena belonging to particular mechanisms and to find the mechanism occurring. The presented catalogue of initial landslide mechanisms only comprises the mechanisms having a clearly defined mechanical model that can be divided into empirical relations and into mechanical models, as well as an overview of run out models, which can be divided into empirical relations and into mechanical models. 相似文献