地面沉降对城市规划建设的影响与对策研究 ——以天津市中心城区为例

以天津市中心城区为例,阐述了天津市地面沉降的成因、 历史和发展现状.结合有关资料,确定了中心城区地面沉降的空间发育分布规律并对其沉降等级进行了划分;在分析地面沉降工程地质特性的基础上,探讨了地面沉降对城市规划、 工程建设以及工程运营的影响,提出了应对地面沉降的措施建议.     

唐益群：地面沉降并非“限高”主要原因

很多媒体把上海最近出台的限制高楼建设的政策与上海的地面沉降问题放在一起报道。这样很容易造成一种错觉，好像高楼引起的地面沉降是上海“限高”的主要原因，应该说这与实际情况不符。事实并不像人们想像的那样——楼建得越高、地沉得越快。实际上，上海地区地面沉降原因很多，抽取地下水是引起地面沉降的主要因素。至于建筑物荷重或施工因素对地面沉降的“贡献”则是上海地面沉降量中的一个成分，     

刘守祺：地面沉降是世界共同难题

作为上海市地质学会的副理事长兼秘书长，刘守祺先生对上海治理地面沉降的各项工作十分熟悉。在他看来，我们现在对地面沉降讲的最多的是危机与困难，却相对忽略了这样一个基本事实：上海数十年来治理地面沉降成效显著。刘秘书长介绍说，上海在地面沉降的研究和治理方面一直都是与世界先进水平同步的。早在1921年上海就有关于地面沉降的首次报道，1939年就有人发表论文，     

京津城际天津段InSAR沉降监测及危害评估分析

针对高速铁路沿线危害评估的应用需求,笔者在采用单一主影像进行时序InSAR数据处理的基础上,提出基于地面沉降严重性分区、 地面沉降变化点进行高速铁路沿线危害评估的方法.以京津城际高速铁路天津段为例,采用高分TerraSAR数据集进行监测,获取重点沉降中心的空间分布、 双街镇快速沉降段以及与周边区域的地面沉降变化点等危害风险点,验证本文评估策略的有效性.     

防治地面沉降当反思

据中央电视台报道,我国有超过50个城市遭受地面沉降灾害,其中,长江三角洲地区、华北地区和汾渭盆地是重灾区。造成地面沉降的原因,有的是天灾,但主要的还是人祸,比如地下水、石油、天然气、地热等资源的过度开采,城市建筑及重     

中国内陆城市难逃地面沉降人工缓解或奏效

地面沉降：感受不到的灾害 人们用“温水煮青蛙”来形容那种无法察觉的危险的慢慢逼近。对我们来说，地面沉降是否正是这样的情形？所幸，地质科学界已经开始注意到这种情况了。近日来，泰国曼谷迟迟不能退去的洪水引起了人们的关注，在探求洪水难以消退的原因时，地面沉降这个名词时常会冒出来。     

上海地下水概况

介绍上海地下水的分层、深井水的开采、水质、地面沉降与控制沉降措施。     

开发优质地下水作为饮用水的可行性研究

介绍上海市地下水现状、地下水开采对地面沉降的影响及其供水方案,并提出3点建议。     

不良地质条件对天津城市建设的影响研究

在收集整理相关不良地质资料的基础上,确定了天津市域范围内活动断裂、 地面沉降、 古河道以及液化土层的空间分布,分析了各不良地质条件的发育程度,并对其规模、 等级、 活动性等进行了划分;结合天津各不良地质条件的发育现状,分析了活动断裂、 地面沉降、 古河道以及液化土层对城市建设的不利影响,为城市规划建设有效规避不良地质条件、 降低建设风险提供支持.     

龚士良：地面沉降研究正向纵深发展

上海市房屋土地资源管理局下属的上海市地质调查研究院是上海从事城市地质工作的专门机构，上海地面沉降的监测、研究、控制是他们的工作重点之一。     

Feminist theorizing as 'transposed autobiography'

This piece considers personal investments endemic in academic writing, more specifically, in Lesbian Studies. Taking Elizabeth Bowen's phrase, "transposed autobiography," as a starting-point, the author briefly discusses the development of lesbian/straight feminist debates, and continues to explore the relative absence of lesbianism in current feminist and queer theorizing. Three 'moments' serve to explain the casting aside of lesbian desire: the subsidence of lesbian/straight feminist debates, the prevalence of 'race'/ethnicity in critical theorizing and the emergence of post-theoretical trends of thought.     

The effect of urban ground covers on arthropods: An experiment

Changes to the ground layer in urban areas are extensive, but the effects on arthropod fauna are poorly understood. We undertook a manipulative experiment to examine the response of arthropods to small-scale variation in ground covers commonly found in urban parks and gardens in Australia. The ground covers tested were bare ground, leaf litter, woodchips and grass, with plot sizes of 3.6 m². Epigeic arthropods were sampled with pitfall traps and Tullgren funnels over 12 months following establishment of the treatments. All epigeic arthropods were sorted to order and the ants (Hymenoptera: Formicidae), beetles (Coleoptera), millipedes (Diplopoda) and slaters (Isopoda: Oniscidea) were examined at lower taxonomic levels. Diverse arthropods rapidly colonised previously cleared plots in all four treatments and were most abundant in grass plots. The diversity of ants and beetles was significantly different in different ground covers and tended to be most diverse in grass plots. Despite the treatments providing very different microclimates, the fauna studied did not show strong selection for a particular cover type overall. The abundance of grass cover in the surrounding area may have led to the grass plots having the greatest abundance of arthropods. These results have important implications for developing effective small-scale conservation efforts for arthropods in anthropogenically modified landscapes, especially for species with poor dispersal abilities.     

Exploring the (Post) Industrial Subculture - Towards a Critical (Post) Anal-ytical Approach to Organizational Analysis

You could maintain incredulity toward metanarratives as much as you liked, but it wouldn't keep your feet on the ground. Not if you were an oilskin. If you were a fleece however, your feet may be on the ground, but your ideas may be in the air. Yet your problem wouldn't be how to resolve your differences - it would be how to recognise them.     

Seeing the Unseen: Prospective Loading and Knowledge Forms in Archaeological Discovery

How does an object in the ground become a discovery on the ground? This paper analyzes how archaeologists produce the content and status of a discovery before it is unearthed, a phenomenon I call “prospective loading.” It includes intense social knowledge of the soil, a form of embodied knowledge that I call “dirt sense”. These forces and mechanisms do not always work together harmoniously. Qualitative data from three excavations demonstrate how deep sensory perception thrives alongside sophisticated technology, and is construed as vital to the discovery process. The case has implications for how we think about cultural knowledge in scientific work and theorize the role of nationalism and politics in archaeology.     

Elder Mistreatment Identification Instruments:

Elder mistreatment has followed a typical life course as a social problem from naming the problem, to research now to considerable activitiy in identification. This article compares elder mistreatment identification instruments among 15 states which use uniform tools in adult protective services settings. The goal is to distinguish differences in starting points in the areas of the definition, the victim/s, precipitator/s, evaluator/s, and instrument design to find common ground for information-sharing and improvements in the identification process. The results show both similarities and differneces to reconcile differences while preserving them, it is recommended that common ground focus on what rather than who, which, when, why and how - problem-centeredness rather than parties.     

Effects of forest structure on the distribution of southern flying squirrels (Glaucomys volans) in urban parks

Although southern flying squirrels (Glaucomys volans) are present in many urban parks, squirrel-habitat relationships in such areas are poorly understood, limiting conservation efforts. Our objective was to quantify the effects of forest structure at multiple scales on flying squirrel distribution in New York City (NYC) parks. From 18 June–24 August 2001, we captured flying squirrels in 5 New York City parks and measured forest structure at the ground, shrub, understory, and overstory levels at trap sites. To examine the importance of forest structure to squirrels, we compared (1) habitat variables between trap stations where squirrels were captured and not captured and (2) habitat variables between parks with and without documented squirrel populations. Our data suggest that areas with forests containing smaller trees at higher densities, dense woody ground cover, and little herbaceous ground vegetation may not provide the food, cavities, ease of movement, or allow predator detection necessary to be used by or support flying squirrel populations. Other factors, such as the size and density of stumps and snags may be important to non-urban squirrel populations, but not populations in NYC parks. Because NYC parks contain almost all of the remaining woodlands within the City, forests within these areas should be a conservation priority.     

The Systematic Literature Review: Advantages and Applications in Nonprofit Scholarship

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Voluntary and nonprofit sector studies are relatively young and still seeking common intellectual ground. One vehicle for...     

THE WORLD OIL CRISIS: A PORTFOLIO INTERPRETATION

This paper applies the mean-variance portfolio model to the analysis of one facet of the production decision confronting the oil exporting countries. Specifically we assume that the countries in question seek the optimal solution to the problem of diversifying their assets between oil reserves in the ground and other non-petroleum investment alternatives. With respect to the group of countries which tend to accumulate money resources in excess of their domestic development needs (e. g., Saudi Arabia and Kuwait) the availability of an "inflation-proof" investment outlet whose principal and interest are linked to a general index of the change in world prices is likely to enhance these countries' incentive to extract oil from the ground on portfolio considerations alone.