浅谈工程建设征地中的土地利用现状分类——以瓦村水电站工程为例

分析了瓦村水电站工程库区淹没调查中遇到的《土地利用现状分类》分类系统在土地类型的调整方面存在的问题,提出了其中多个地类进一步细分的建议,为瓦村水电站工程建设征地具体实施提供了依据。     

实时监控下土石坝碾压质量全仓面评估

采用常规监理旁站方式监控土石坝碾压参数以及事后试坑取样检测的质量管理手段,往往有较大的人工误差。依托土石坝施工质量实时监控技术,获得了施工仓面任意位置处的碾压参数值(碾压速度、激振力、碾压遍数和压实厚度)。在分析碾压参数与压实质量标准(干密度或压实度)之间相关性的基础上,采用三层前向式ANN模型,建立碾压参数和压实质量标准之间的非线性映射关系,并提出了全仓面碾压质量评估的具体流程,获得仓面任意位置处的压实度以及全仓面的碾压质量达标率。该方法可有效避免以有限个试坑检测样本评价整体仓面碾压质量的片面性,为现场施工质量控制提供了新的途径。     

PCCP管道工程柔性接口施工技术

结合南水北调中线京石段应急供水工程（北京段）PCCP管道一标工程实践,系统介绍了PCCP管道工程柔性接口聚硫密封胶施工技术。     

The invasion of a large lake by the Eurasian genotype of common reed: The influence of roads and residential construction

The Eurasian genotype of common reed (Phragmites australis) is one of the most aggressive plant invading North American wetlands. There is, however, little published evidence on establishment patterns of populations along lakes of the St. Lawrence River–Great Lakes watershed. We tested the hypothesis that the recent invasion of Great Lake Saint-François (Québec, Canada) by common reed was facilitated by a dense road system and by an intense residence construction activity along lakeshores. A total of 345 and 2914 reed stands were mapped along lakeshores, and along the road system of the study area, respectively. The probability of finding a reed stand on a lakeshore increases with the proximity of the lake's outlet, and of a paved road, but decreases with the proximity of a residence built since 1990. It is likely that common reed first spread along the road system, and that wind dispersal of seeds then favored the establishment of populations on lakeshores. Our model does not support the hypothesis that residential construction facilitated the establishment of reed stands, probably because the recent residential construction boom occurred essentially in the southern part of the lake, where the number of roadside reed populations is much lower than in the northern part (lower seed rain). The invasion of Great Lake Saint-François shows that the spread of the plant is not restricted to major river or road systems. Large or small lakes, if submitted to intense diaspore pressure, can also be at risk.     

小浪底核心价值体系的构建及其转化

小浪底水利枢纽是国家治理开发黄河的战略性工程,在工程建设和运行管理过程中,广大建设者自觉不自觉地构建起了核心价值体系,对这种价值体系的构建及转化过程进行认真深入的研究,总结经验,提炼特色,明确做法,分析不足,对于继续更好地开展核心价值体系构建和转化工作具有很好的借鉴意义。     

临沂市生态水城规划建设的实践与思考

在分析山东省临沂市大水城规划建设中存在问题的基础上,从满足大水城水量要求的水工程规划建设、水安全要求的城市防洪工程规划建设、改善水质提升河流品质的水生态及水环境工程规划建设、两岸开发需求的跨河及其沿河的交通工程规划建设、水文化和工程管理规划建设等方面探讨了适合跨河城市综合发展的途径,为跨河城市以及生态景观城市规划建设提供参考。     

黄石长江公路大桥深水主墩基础施工

本文扼要介绍黄石长江公路大桥深水主墩基础施工中开发和引进的新工艺、新技术、新设备、新材料。     

现代城市与地下建筑

探索城市地下空间的开发利用，是现代化城市建设工作中的一个重要课题。本文探讨了地下建筑和城市地下空间的开发利用对现代城市建设的作用和它们之间相结合的途径，并对地下综合管道建设、地下建筑与物资贮存、地下建筑与产品生产和地下建筑发展展望等问题进行了分析和讨论。     

地下建筑中水幕的防火作用与最佳设置间距

本文根据地下建筑火灾中火烟沿地下建筑巷道流动的火烟温度，促使火烟运动的火风压沿程变化规律以及水幕在地下建筑火灾中具有防火。降温。稀释。隔烟的综合作用和地下人员安全疏散、地面人员灭火扑救容易通过的特殊作用，通过计算，论证了水幕在地下建筑疏散巷道中所设置的最佳间距及其在安全疏散和灭火救助中的应用。