GIS在四川九龙县地质灾害区划中的应用

九龙县地处川西,受水电开发、道路修建和城市建设等人类活动影响,加之区域气候变化加剧,地质灾害复发和新发程度高.采用传统的地质灾害危险性评价方法的精度将难以达到可操作的程度.利用GIS空间分析和统计功能,结合数理统计中的信息量法,选取对区内生态地质环境影响巨大和易量化的因素作为评价因素,包括DEM、坡度、坡向、水系、道路、居民地、工程岩组,通过对应数据的收集、栅格化、叠加运算和修正,得到地质灾害危险性区划.     

湖北省宜城市白垩系跑马岗组地层区滑坡特征及成因分析

湖北省宜城市白垩系跑马岗组地层区地质环境复杂,近年来,该区地质灾害频发;根据统计,区内滑坡均与不合理的人类工程活动有直接关系,且86.87%以上的滑坡发生于雨季,因此降雨因素和人类工程活动是区内滑坡的主要诱发因素,只有准确及时地进行气象预警预报,才能很好地减灾避灾;同时,在实际工作中,要正确处理人类工程活动,合理开发利用资源,尽可能地减少对地质环境的破坏,从而有效地减轻、防止地质灾害的发生。     

海南省五指山市地质灾害分布特征与防治

海南省五指山市地质灾害类型主要有崩塌和不稳定斜坡两种.区内地质灾害的发育特征主要受自然因素和人为因数的影响,自然因素主要为地质构造、地形地貌、地层岩性、大气降雨;人为因素主要为削坡建房和道路交通建设.地质构造、地形地貌及地层和岩石类型是地质灾害形成的内因,而降雨及人类工程活动则是诱发和加剧地质灾害发生的外因.地质灾害的防治措施应以预防为主,工程治理、生物防治与搬迁避让相结合.     

河南省嵩县环境地质问题及影响因素成因分析

嵩县地质环境条件复杂,地形地貌复杂多样,断裂构造发育,且人类工程活动较强烈,自然环境破坏较严重,特殊的自然地理环境和地质构造背景,导致该地区存在或者发育独特环境地质问题.地质灾害时有发生,是河南省地质灾害较严重的县（市）之一.嵩县地质灾害具有分布面广,相对集中,稳定性差等特点.地质灾害的发育与地形地貌、地层岩性等地质条件及修路、切坡建房、矿山开采等人类工程活动密切相关,降雨是最直接的引发因素.     

山西交城县采空塌陷地质灾害发育特征及防治对策

交城县是山西省吕梁市的一个产煤大县,同时也是一个地质灾害严重频发县.灾害类型主要有地裂缝和地面塌陷,其发生与地质背景及人类工程活动密切相关,其中采煤活动是引起该县地质灾害的主要原因.地质灾害的形成发育严重影响了当地村民的日常生活和地区经济发展.在调查研究交城中东部地区采空塌陷地质灾害时空分布的基础上,本文结合区域地质、水文地质、工程地质等地质环境条件及人类经济工程活动,分析了地质灾害的发育特征,探讨了地质灾害形成机制,确定了该地区地裂缝的非构造属性,并提出了相应的治理对策.     

基于地学信息图谱的地质灾害成灾机制分析

 地质灾害的形成和演化受制于一定的区域背景条件,从而决定了区域地理环境对地质灾害的空间分布有着不可忽视的影响,地学信息图谱理论借助图形语言的形象思维和表达能力,可直观、简洁地表达地质灾害的形成条件和影响因素。本文基于地质灾害空间数据库,运用地学信息图谱理论和GIS 技术,将地质灾害空间属性及其与致灾因子在时间、空间分布的关系用图谱形式表示,分析研究区地质灾害在空间上的特征以及在时间上的变化过程。研究结果表明,研究区内地质灾害的形成主要受地形地貌、地层岩性、地质构造、降雨和人类工程活动等因素的影响和制约。其中,地形地貌是形成地质灾害的必要条件,地层岩性为地质灾害形态及变形破坏提供了物质基础,地质构造对地质灾害形成具有直接或间接的控制作用,降雨是地质灾害的主要触发因素,人类工程活动加剧了地质灾害的形成。     

基于地学信息图谱的地质灾害成灾机制分析

地质灾害的形成和演化受制于一定的区域背景条件,从而决定了区域地理环境对地质灾害的空间分布有着不可忽视的影响,地学信息图谱理论借助图形语言的形象思维和表达能力,可直观、简洁地表达地质灾害的形成条件和影响因素。本文基于地质灾害空间数据库,运用地学信息图谱理论和GIS技术,将地质灾害空间属性及其与致灾因子在时间、空间分布的关系用图谱形式表示,分析研究区地质灾害在空间上的特征以及在时间上的变化过程。研究结果表明,研究区内地质灾害的形成主要受地形地貌、地层岩性、地质构造、降雨和人类工程活动等因素的影响和制约。其中,地形地貌是形成地质灾害的必要条件,地层岩性为地质灾害形态及变形破坏提供了物质基础,地质构造对地质灾害形成具有直接或间接的控制作用,降雨是地质灾害的主要触发因素,人类工程活动加剧了地质灾害的形成。     

黄山地区中生代碎屑岩区域地质灾害成因的探究

随着皖南山区公路和城市的迅速发展,地质灾害愈来愈频繁.文章选择黄山地区中生代碎屑岩分布区地质灾害作为研究对象,从区域地层岩性的研究人手以及对其他地质灾害控制因素的分析,得出了人类的工程活动是黄山地区中生代碎屑岩区域地质灾害发生的主要因素.     

广西环境地质灾害现状与防治措施

广西地处亚热带,气温高、雨量充沛,地质条件复杂,岩溶分布广,加上人类社会活动加剧,地质环境较为恶劣,导致地质灾害频繁发生。广西地质灾害具有活动频繁、分布广泛、群发性强、危害严重等特点。广西主要地质灾害有水土流失、膨胀土地质灾害、河岸崩塌、地面塌陷、水土污染、滑坡、泥石流、海水入侵、山区石漠化等。通过对广西壮族自治区环境地质灾害现状及危害进行了研究,分析了引发环境地质灾害的主要因素,并提出了切合实际的综合防治对策。     

探讨当前地质灾害调查中的遥感技术

我国幅员辽阔,地质结构多样,是一个地质灾害多发的国家。常见的地质灾害有滑坡、泥石流、崩塌、地裂缝、地面塌陷等。不合理的人类经济工程活动使得地质灾害的发生日趋加剧,地质灾害严重地威胁着国家的财产和人民的生命安全,阻碍了社会经济可持续发展,利用遥感技术不仅可以监测地质灾害的发生,同时能够为抢灾与救灾工作提供准确资料,减少甚至避免地质灾害造成的损失。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that