岳阳市中考满分作文-毕业.doc

武汉科技大学本科毕业论文本科毕业论文题目：沿江沿海城市地面沉降防治措施研究学 院:城市建设学院专 业:土木工程学 号:200808141140学生姓名:张书铃指导教师:汤斌日 期:二一二年六月摘 要目前，地面沉降是一个非常重要的问题，对经济开发特别是对沿江沿海城市具有严重的影响。本文通过文献的综述，介绍了我国地面沉降灾害的基本情况。论述了地面沉降发生的机理和原因，分析了地面沉降对沿江沿海城市经济所造成的灾害并提出了一些城市对它的有效防治措施。并参照上海和天津两大城市对地面沉降的防治措施。得出的结论有：地面沉降对沿江沿海城市的灾害主要有以下几点：（1）防御风暴潮能力降低（2）防洪能力降低（3）城市基础设施遭受破坏（4）港口设施失效（5）桥梁的净控越来越小（6）对农业影响很大，加重了土壤的次生盐渍化，影响农田肥力和农作物单产量；城市对它的有效防治措施有：（1）节约使用地下水并限量开采（2）解决替代水源和压缩地下水开采量（3）地下水人工回灌（4）调整地下水的开采层次（5）完善补充地面沉降监测。关键词：沿江沿海城市 地面沉降 防治措施 AbstractAt present, land subsidence is a very important issue, It has a serious impact on economic development, especially for coastal cities. Through a literature review, the basic situation of ground subsidence in China. This pare discusses the mechanism and causes of landsubsidence occurred, Analysis of the ground subsidence of coastal city economic disaster and put forward some city on its effective prevention and control measures. And in the light of Shanghai and Tianjin two big city on the ground subsidence control measures.The conclusion is: The ground subsidence of coastal city of disasters are:(1) prevention of storm surge reduced ability (2) flood control capacity is lower (3) urban infrastructure (4) port facilities damaged failure (5) impacts on agriculture the net control of the bridge is getting smaller and smaller. (6) increased soil secondary salinization, affecting farmland soil fertility and crop yields;Its effective control measures by city are: (1) economical use of groundwater and limited exploitation (2) alternative sources of water and compressed groundwater extraction (3) artificial groundwater recharge (4) adjustment of the groundwater exploitation level (5) The perfect complement to the