同步阶梯式施工大断面及大倾角上山巷道

对于大断面、大倾角上山改造巷道的施工方法,采取分台阶、同步施工的方式进行施工,相比传统的一次成巷及台阶式施工方法,同步阶梯式施工大大提高了施工安全系数和施工效率.在百善矿654溜煤道改造工程的实际应用取得良好效果,工程得以提前完工.     

井-震结合进行河流相储层非均质性表征——以渤海湾盆地黄河口凹陷渤中263油田为例

针对渤海湾盆地黄河口凹陷渤中263油田明化镇组下段浅水三角洲水下分流河道多期次砂体表现出的强烈非均质性,综合应用井-震数据、采用多种方法进行储层平面非均质性定量描述,并体现到地质建模和井位部署中,以降低储量风险、落实潜力、优化开发井位、指导ODP方案(整体开发方案)的编制和决策。岩石物理分析发现,该油田以密度反演为主的拟阻抗可以很好地反映砂、泥岩的变化。通过阻抗体上提取的振幅和相干信息,可以识别平面岩相变化、废弃河道、点坝以及小断层分布。这些信息可以在属性模拟时约束平面渗透率变化。对于强不连续位置,还可以设置虚拟断层以表征砂体内部的不连通性。利用短时窗傅氏变换频谱分解技术以及差异频谱所反映的吸收衰减现象,在频率域通过调谐振幅的成像特征研究了储层横向变化规律,定量求取了砂体厚度,并成功检测了含油气砂体。     

Experimental data set for validation of heat,air and moisture transport models of building envelopes

This paper reports experimental studies on heat, air and moisture (HAM) transfer through a full scale light weight building envelope wall under real atmospheric boundary conditions. The main objective of the article is to generate informative data so that it can be used for numerical validation of HAM models. The considered wall is a multilayered structure built up from outside to inside of external board, vented cavity, fibreboard sheathing, mineral wool between wooden studs and interior finishing. The global wall has a surface area of (1.80 × 2.68) m²; and is subdivided into three vertical parts. The parts differ from each other by the applied interior finishing. Between the different layers of each part and on the surfaces of the wall humidity, temperature and heat flux sensors are placed in a 3D matrix. At the outer surface of the wall, the applied sheathing is a bituminous wood board. In the board nine removable specimens are included. By regularly weighing the fibreboard samples, their moisture content could be quantified. Using data collected over a total time span of about two years, insight about the hygrothermal behaviour of the different envelope parts is obtained and at the same time a well-documented data set is generated that can be used for hygrothermal envelope model validation purposes.     

Artificial neural network based modelling of desiccant wheel

In this article, the concept of artificial neural network and goal oriented design have been used to propose a computer design tool that can help designers to evaluate performance of desiccant cooling system and behaviour of the desiccant wheel. Based on the experimental observations on desiccant wheel, a neural network model has been developed using a neural network toolbox of MATLAB^® with feed forward back propagation method. The model has been validated against experimental data sets. A number of training algorithms with feed forward back propagation method have been used for the modelling of desiccant wheel to identify a training algorithm with least mean square error (MSE). The performance of all training algorithms has been analyzed and training algorithm trainlm (Levenberg-Marquardt back propagation) is found most suitable for the prediction of outputs which have least mean square error of 0.064462 and 0.007575 for specific humidity and temperatures respectively. The proposed model can predict the specific humidity and temperature at the outlet of desiccant wheel within the range of experimental values.     

构建城市建筑物变形信息自动化采集与管理系统的关键技术研究

本文针对大型和高层建筑物的变形监测问题,阐述了研究并开发建筑物变形信息自动化采集和管理系统的原理和方法,并对其中的关键技术进行了分析和探讨,最后通过实例论证了系统构建方案的可行性和实用性.     

高密度电阻率法多剖面二维勘探数据的三维反演及应用

目前高密度电阻率法所采用的数据资料处理方法主要是把地质结构体视为二度体进行二维处理,而实际的地质结构体大都为三度体或似二度体,从而二维数据资料处理结果只是一种近似解释,其计算精度与反演效果都不佳,对测区多条断面进行综合解释的难度大。然而在实际勘探工作中,受自然条件和工作成本的影响,三维勘探原始数据的获得一般较少,数据勘探仍以二维为主,这样利用二维勘探数据进行三维反演显得尤为重要。本文结合了广东某地高密度电阻率法对岩层划分的工程勘察实例,利用二维勘探的数据进行三维反演,并对二、三维反演结果进行对比,结果表明三维反演在岩层划分中更能凸显岩层分界面区域及岩层的空间分布,而岩层与覆盖层的整体连续性也得以更真实的体现,与钻探结果吻合更好。     

面向规划业务应用的数据资源空间化管理

本文结合当前规划业务管理需要,介绍了从地理空间角度出发整合多种类型数据资料,集成CAD图形环境和数据库技术,探索建立以地理坐标索引为主、时间序列为辅,结合地理定位电子地图可视化的规划资料管理信息系统新途径,开拓快速的资料共享渠道。     

既有结构下穿越施工顶升控制技术和监控

在北京机场线东直门站下穿城铁^#13线东直门站折返线施工过程中,采用PLC液压同步控制系统控制既有线结构变形。结合洞桩法施工工序,按“分区、分阶段、分组、分级”原则,制定总体顶升方案。“分区”,就是根据既有线不同结构形式分别计算千斤顶顶升力。“分阶段”就是结合下穿施工典型工况,划分为3个顶升阶段,分别制定顶升方案。“分组”就是将千斤顶分为不同的组,对千斤顶实施分组控制。“分级”,就是对每组千斤顶顶力实行分级控制,逐级累加达到顶力设计值。根据既有线变形情况,启动了第三阶段顶升方案对上部既有线结构进行了6次顶升。实践证明,PLC液压同步控制顶升技术可以减缓下穿施工过程中既有线结构沉降速度,降低既有线结构下沉量,保证既有线安全运营,是一种主动防御的控制方法。     

燃气管道的结构补偿及状态监测系统设计

针对建筑地基沉降引发的建筑燃气管道变形、断裂,分析了问题产生的原因,提出了管件结构补偿措施.作为该措施的补充,设计了一种燃气管道状态自动监测系统.通过分布式数据采集技术和通信技术,实现燃气管道实时监测.     

基于云计算的智慧黄山景区数据基础设施规划方案

数据基础设施是智慧景区的重要组成部分,云计算将是实现智慧黄山景区的重要支撑技术.在分析黄山景区规划管理信息化需求、总结黄山景区现有信息化成果、论述当前云计算技术发展的基础上,提出了基于云计算构建智慧黄山景区数据基础设施——云数据中心的规划方案,包括构建云数据中心的原则与内容;探讨了智慧黄山景区云数据中心的实施策略,包括构建私有云数据中心、拓展混合云数据中心以及4个阶段的建设生命周期.对我国智慧景区数据基础设施建设进行了有益的探索.