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1.
The use of the sea for sewage disposal has come under increasing scrutiny from the public and from other countries bordering the North Sea. There is a need, therefore, to understand and quantify the environmental impact of sewage discharges from long sea outfalls. Broad-based environmental surveys were carried out at case-study outfalls at Tenby and Weymouth over a four-year period. Studies included ( a ) sediment sampling on coarse grids and near-outfall transects, ( b ) bioassays on mussel scope-for-growth and Microtox, and ( c ) uptake of taint compounds.
Although at both Weymouth and Tenby the whole survey area was affected to some extent by sewage-derived material, both outfalls were operating within the dispersive and assimilative capacities of the environment, and thus were having minimal effect. The studies indicated that well-designed and operated long sea outfalls appear to be an acceptable means of domestic waste disposal. 相似文献
Although at both Weymouth and Tenby the whole survey area was affected to some extent by sewage-derived material, both outfalls were operating within the dispersive and assimilative capacities of the environment, and thus were having minimal effect. The studies indicated that well-designed and operated long sea outfalls appear to be an acceptable means of domestic waste disposal. 相似文献
2.
滨海片区城市设计运作实践探索及启示——以深圳大梅沙片区为例 总被引:1,自引:2,他引:1
在编制阶段,大梅沙片区城市设计采用整体城市设计的探索与确立、局部城市设计的深化与优化,以及具体地块的城市设计弹性调整等步骤;在实施运作管理阶段,大梅沙片区城市设计采用多元触媒的联动发展及具体地块的精细化实施管理运作模式,形成了整体控制、局部优化,政府主导、市场推动,循序渐进、全程导控的城市设计实施运作机制,有效加强了城市设计运作的实效,又较好地顺应了各种因素的变化。 相似文献
3.
韧性城市视角下海平面上升对沿海城市的影响及对策研究——以厦门市为例 总被引:1,自引:0,他引:1
随着全球气候不断变化,海平面上升速率逐渐加快,严重影响着沿海城市的安全与可持续发展,提升沿海城市韧性已经成为其应对气候变化的战略共识。基于韧性城市理论,构建了海平面上升影响分析及韧性评价模式,并以厦门市为例,展开了不同时间情景下的影响分析及韧性评估。结果表明,2030年和2050年在海平面上升的影响下,受灾人口将增加6万人和8万人,受灾建设用地将增加5.1km^2和8.3km^2,受灾道路将增加14.6km和24.0km。同时通过空间评估,明确了不同地区韧性提升的重点。最后针对性地提出了厦门城市韧性提升的策略。 相似文献
4.
本文在广泛调查的基础上甩数字揭示了我国当前建筑创作中因玻璃使甩不当而导致能耗激增的严重同题,分析了造成上述问题的原因,并试图从理论上澄清某些存在于建筑师头脑中的关于玻璃表皮的模糊概念,同时指出了一些建筑师"基于感觉"的工作方法之于生态环境的隐患.文章论述了建筑表皮的本质、建筑的"经济性"之于甲方及整个生态环境的意义以及生态伦理对新时期人们建筑审美观的影响,作者认为,建筑师不应以对人类生存环境的持续破坏为代价去创造"美". 相似文献
5.
三亚海滨度假区形态研究——以亚龙湾、大东海、海坡为例 总被引:2,自引:0,他引:2
三亚有形态各异的亚龙湾、大东海和海坡度假区,是国际海滨度假地发育的典型特征,在对案例研究后发现,三个海滨度假区的微观区位和功能定位不同,相应的形态规划也应分别作适应性调整,对此提出了具体的建议. 相似文献
6.
Performance evaluation and safety assessment of a buffering stormwater drainage system (BSDS) for a low-lying area are discussed in this paper. Unlike a conventional pump drainage system, the BSDS, which drains stormwater runoff of a low-lying area to a nearby channel system through underground conduits with gravity, and then buffering peak flows with the storage capacity of a channel system, will discharge stormwater to rivers outside the low-lying area with pumps or flood gates if necessary. This kind of drainage system is considered to be environment friendly and economic both in terms of capital cost and operating & maintenance expenses. To investigate the design parameters and evaluate the performance and safety of BSDS, a hydraulic model coupling the conduit systems and a channel system was developed in this paper, and a case-study approach based on field investigation and simulation test was used. Moreover, the design requirements for safety of BSDS were drawn through a simulation test. 相似文献