新库区储罐及地下钢结构阴极保护的应用及系统运行状况

新库区位于海滩上的回填土区 ,土壤pH值 5～ 6 ,地电阻≤ 2 5Ω·m ,土样含水量 12 %～ 2 4 % ,形成电导率高、透气性好和弱酸性的潮湿土壤 ,具有强的腐蚀性。此外 ,该区的土壤随着时间的推移 ,原海滩的盐碱通过扩散及毛细作用 ,使土壤的腐蚀性随含盐量增加而增强 ;因此 。

工程渣土在新圈围库区的消纳实践研究——以上海南汇东滩N1库区为例

滩涂围区实施工程渣土回填消纳,应当满足相关规划和土壤环境保护要求,并通过相关部门的审批。针对滩涂围区面积大、地势低、地基承载力差、水土环境好等特点,工程技术人员需要研究解决平面布置与地块后续利用及施工工艺的衔接、重载车辆安全通行、回填平整控制和土壤污染风险管控等技术难点,以满足在软土地基上大范围、高强度、安全环保施工作业。本文通过分析上海南汇东滩N1库区水系和土地规划,结合滩涂库区软基地质特征、工程渣土物理特性、堆填平整标准和渣土环保控制指标等要求,提出了相应的技术思路和解决方案。2.2万亩新圈围库区经过近6年的工程渣土回填,已实现年平均消纳工程渣土1000万t,回填区域水土环境质量符合环保控制要求,社会经济效益显著。本文可以为软土地基上大范围高强度安全消纳工程渣土的类似工程提供参考。

门楼水库建设生态型新库区的对策浅析

文章调查了门楼水库库区的基本情况,分析了建设生态型新库区的必要性,从资源优势、基础优势、政策优势、市场优势等4个方面指出了建设生态型库区的优势,并提出了建设生态型新库区的途径。

Research on Newly Urbanized Towns and Districts in China

Since the last decade the central government endeavors to promote large scale of urbanization in China.Lots of new urban towns and districts are taking shape. Outline of the 12th Five-year Plan released by the central government points out that the new towns and districts are to be regulated. But few researches are considering the new towns and districts especially in the spatial distributive pattern and status in China. Given this situation this paper, after sorting out the world-wide research and development of new urban towns and districts, gives definitions of broad and narrow meanings. Based on the broad meaning definition, the database of new towns and districts in China is established. This paper then conducts a preliminary analysis of the new towns and districts.Then the two-step work plan and the advices are also proposed to further improve the research and practice of its kind in China.