城市排洪河道整治的新思路

城市部分河道承担的只是排洪的功能,因其经常性缺水,河道淤积,河床植物丛生,影响城市景观。通过对南桥河工程整治的实践,认为此类工程的关键是蓄水和截污,并提出一种新的截污方法及方案评估方法以能确定最佳的方法。     

SOLVING AN URBAN RIVER EROSION PROBLEM ON THE TILMORE BROOK, HAMPSHIRE (UK)

The Tlimore Brook, In Hampshire, typifies the Impact of new housing development that has taken place In phases over the past 20 years or so, on a river corridor. However, the issue is not one of flooding, because the channel itself had been straightened and deepened in historical times and had been adjusted further by down-cutting; thereby forming an over-large channel sufficient to contain flood flows. Perhaps rarely for lowland Britain, the key problem was that of erosion, threatening adjacent properties. This paper describes the nature of the erosion problem and the subsequent geomorphological design to mitigate it. A key unique feature of this project was the extent of backfilling required, over the entire length, to raise the over-deep channel bed. The project was constructed in 2003.     

深港西部通道侧接线隧道工程地道高性能混凝土技术研究与应用

深港西部通道侧接线工程处于深圳湾填海区段,是深圳市的重点工程.在探讨了隧道工程的环境特征及作用等级,结构腐蚀原因;提出了适应地道结构近海腐蚀环境的高性能混凝土配制原则、性能指标以及技术要求.根据研究结果,对深港西部通道侧接线隧道工程中的实践应用的高性能混凝土进行了验证和评估.     

桥渡冲刷计算方法分析

对各类冲刷公式建立的依据以及公式的适用条件进行了分析,介绍了公式发展历史,并提出现在应用这些公式所面临的问题以及解决方法,为桥下河槽冲刷的进一步研究提供了理论基础。     

大面积薄钢板平铺焊接变形的控制技术

薄钢板焊接变形是施工过程的控制重点,结合工程实例,针对焊接面积大,钢板较薄,整体表面要求平整,耐久滚压等特点,从焊接变形控制措施,施工技术措施,施工工艺环节出发,系统介绍了从板幅选择、排料、施工、过程控制等方面所采取的施工措施,工程实践表明所采取的施工措施保证了工程的质量.     

水利信息化建设投资分析

阐述了水利信息化投资的必要性,对水利信息化投资的经济学分析、融资途径、管理体制等方面进行了分析,并提出了增强投资效益的一些措施,以保障水利信息化投资能够取得良好的经济效益和社会效益。     

卫星通信在输气管道的应用

介绍了利用Ku波段单路单载波(SCPC)卫星通信系统实现远距离站点之间的SCA-DA系统实时数据传送和电话通信。     

高层建筑物燃气立管温差补偿的思考

对目前高层住宅建筑燃气立管温差补偿的常用处理方式进行了研究,通过对温差引起的变形长度以及管道受力计算,分析了引起管道发生温差变形不明显的各种因素,提出了具体解决立管温度补偿方式的建议和方法.     

各种超高形式下超高值计算公式的探讨

介绍了公路路线设计中超高缓和段的六种过渡形式，将各种超高形式下超高值的计算公式进行了推导和汇总。希望能给同行一些参考和帮助。     

Post-Implementation Appraisal of a Two-Stage Channel in the River Roding, Essex

T he performance of a two-stage river channel is examined from a combination of collected field data on the River Roding and a hydraulic model study. Particular attention is paid to the vegetation on the upper channel berm, including its seasonal effect on hydraulic resistance and the problem of channel maintenance. Recommendations are made with respect to (a) increasing the present capacity of the River Roding, and (b) the future design of two-stage flood channels intended to meet stringent environmental standards.