基于Android移动端的野外工作数据集成系统开发研究

为了解决目前传统野外工作数据处理时常出现的效率低下,存储不便,检索不易等现象,另外通过分析当前移动端地理信息系统的发展趋势[1],提出基于Android移动端的野外工作数据集成系统。通过此系统进行野外工作数据处理分为两个步骤,首先由Android移动端采集数据,再由客户端进行后期数据集成处理。客户端系统主要进行数据集成与管理,具有用户登录与管理、数据采集、野外工作分析三个功能模块[2]。通过对水体采样进行系统测试,证明了系统方便检索、便于存储、易于分析、寿命长、成本低等特点,解决了传统人工处理数据效率低下和数据不易保存的问题,并且能提高数据处理的效率,提升分析数据的精度,使得处理工作人员能将主要精力集中到野外工作中去。     

Azimuthal Variations of the Convective-scale Structure in a Simulated Tropical Cyclone Principal Rainband

Previous numerical simulations have focused mainly on the mesoscale structure of the principal rainband in tropical cyclones with a relatively coarse model resolution. In this study, the principal rainband was simulated in a semi-idealized experiment at a horizontal grid spacing of 1/9 km and its convective-scale structure was examined by comparing the convective elements of the simulated principal rainband with previous observational studies. It is found that the convective scale structure of the simulated principal rainband is well comparable to the observation.　　The azimuthal variations of the convective scale structure were examined by dividing the simulated principal rainband into the upwind, middle and downwind portions. Some new features are found in the simulated principal rainband. First, the overturning updraft contains small-scale rolls aligned along the inward side of the outward-leaning reflectivity tower in the middle portion. Second, the inner-edge downdraft is combined with a branch of inflow from the upper levels in middle and downwind portions, carrying upper-level dry air to the region between the overturning updrafts and eyewall, and the intrusion of the upper-level dry air further limits the altitude of the overturning updrafts in the middle and downwind portions of the principal rainband. Third, from the middle to downwind portions, the strength of the secondary horizontal wind maximum is gradually replaced by a low-level maximum of the tangential wind collocated with the low-level downdraft.     

全息测量接收机系统

简单介绍了微波全息测量的原理、用于微波全息测量的接收机系统,然后比较详细地叙述了对该接收机系统相位稳定性的测试,指出了当前接收系统的主要问题。并对接收系统的改进做了两种设计方案。     

一次雷暴大风的中尺度结构特征分析

应用天津新一代天气雷达产品和255m气象铁塔资料等，分析了2004年6月22日20：00～21：40时（北京时）出现在天津地区的一次雷暴大风天气过程。分析证实：不仅具有弓状回波的对流系统能够产生雷暴大风，而且阵风锋也能够产生雷暴大风；只是弓状回波顶部和向前突起部分产生的大风更强烈。另外还探讨分析了雷暴大风的中尺度结构特征。     

水库诱发地震的最大震级及其发震时间的预测研究

用信息量法和灰色模型法研究了水库诱发地震的最大震级和发震时间．信息量法是对水库地震震例的地震地质因素和标志进行统计，计算它们对诱发地震震级提供的信息量，据信息量的大小判断诱发地震的可能最大震级；灰色模型法是研究水库诱发地震前震的频次随时间的变化，以变化率最大的时间作为最大地震发生的时间．用新丰江和柯依纳水库地震震例资料对信息量法和灰色模型法进行了检验．结果表明，两种模型方法有一定的可行性．      

搜索理论与建筑物评估和标记问题的讨论

简述了救援支持系统的含义、搜索理论的发展及其在倒塌建筑物救援中的应用前景；分析了我国现有倒塌建筑物评估的现状，认为应当在适当时机开展这方面的研究；重点讨论了建筑物评估和标记，认为目前我国应当借鉴国外救援行动有关的建筑物评估与标记方法；讨论了建筑物倒塌救援的搜索方法和程序；介绍了国外建筑物倒塌救援标记的使用方法。     

城镇标准地块空间配置线性分析

根据重庆市标定地价空间组织研究,提出城镇标准地块空间的技术路线为：以城镇土地定级成果为基础,以标准地块功能特征为依据,揭示了城市土地级差和房地产市场价格线性分布规律,建立标准地块线性计量模型。运用该模型编制的重庆市九龙坡区标准地块定量配置方案能很好地满足当地地价管理的需要。     

水库诱发地震的预测

从三方面对水库诱发地震进行预测：根椐水库区的地质、地震和工程条件,在水库的设计阶段进行诱发地震的前期评价预测;按国内外已有震例资料预测可能诱发地震的水库发生最大地震的时间;在已初发震的水库对地震的发展趋势和破坏性地震的可能性进行预测     

Simulation of Extreme Updrafts in the Tropical Cyclone Eyewall

Strong vertical motion(10 m s~(-1)) has profound implications for tropical cyclone(TC) structure changes and intensity. While extreme updrafts in the TC are occasionally observed in real TCs, the associated small-scale features remain unclear. Based on an analysis of the extreme eyewall updrafts in two numerical experiments conducted with the Advanced Research version of the Weather Research and Forecasting(WRF) model, in which the large-eddy simulation(LES) technique was used with the finest grid spacings of 37 and 111 m, for the first time this study demonstrates that the simulated extreme updrafts that occur mainly in the enhanced eyewall convection on the down-shear left side are comparable to available observations. The simulated extreme updraft exhibits relatively high frequencies in the lower(750 m), middle(6.5 km) and upper(13 km) troposphere, which are associated with different types of small-scale structures.While the lower-level extreme updraft is mainly related to the tornado-scale vortex, the extreme updraft at upper levels is closely associated with a pair of counter-rotating horizontal rolls oriented generally along the TC tangential flow, which are closely associated with the enhanced eyewall convection. The extreme updraft at middle levels is related to relatively complicated small-scale structures. The study suggests that extreme updrafts can be simulated when the grid spacing is about 100 m or less in the WRF-LES framework, although the simulated small-scale features need further verification in both observation and simulation.     

Mining Method Selection and Optimization for Hanging-Wall Ore-Body at Yanqianshan Iron Mine,China

In order to smooth ore production during the transition from open pit to underground mining at Yanqianshan Iron Mine, China, it is necessary to select an appropriate mining method to operate simultaneously open-pit mining and underground mining for inner-slope (hanging-wall) ore-body. Based on practical geologic setting of the hanging-wall ore-body, a comprehensive evaluation model for selecting the underground mining method to extract handing-wall ore-body was proposed, which is constituted by 3 sub-systems of safety factors, production factors and technical–economic factors. This evaluation model could be analyzed by the mutation progression method, which based on catastrophe theory and fuzzy mathematics. In addition, the FLAC^3D is employed to simulate the mining process of hanging-wall ore-body, and finally the optimal mining scheme is determined. By using mutation progression analysis and numerical modeling, some useful conclusions for hanging-wall ore-body mining have been drawn, which will be beneficial to mining safety during transitional period from open-pit to underground mining.