波导法测量油井持水率的理论、方法和实验研究

油井内的钢铁质套管可视为大口径圆波导，为应用电磁波传播方法测量管内混合流体的持水率提供了可能性．本文通过分析油井套管构成的导波系统的电磁波传输特性，提出一种波导测量方法，并用数值模拟和物理模拟实验结果，考察方法的可行性．结果表明，波导法具有特殊优点和良好应用前景．     

区域地壳稳定性研究的后顾与前瞻

文章回顾了中国区域地壳稳定性研究的历史,划分了其发展阶段,阐述了不同学派的基本观点,分析了该领域面临的新挑战并指出了其未来的发展方向。明确提出,在活动地区选出并评价相对稳定地块(安全岛)作为重大工程场址将是未来的主流。     

Seismic reliability analysis of earth slopes under short term stability conditions

Different models were developed for evaluating the probabilistic three-dimensional (3-D) stability analysis of earth slopes and embankments under earthquake loading. The 3-D slope stability model assumed is that of a simple cylindrical failure surface. The probabilistic models evaluate the probability of failure under seismic loading considering the randomness of earthquake occurrence, and earthquake induced acceleration and uncertainties stemming from the discrepancies between laboratory-measured and in-situ values of shear strength parameters. The models also takes into consideration the spatial variabilities and correlations of soil properties. The probabilistic analysis and design approach is capable of obtaining the 2-D and 3-D static and dynamic safety factors, the probability of slope failure, the earthquake induced acceleration coefficient, the yield acceleration coefficient, the earthquake induced displacement, and the probability of allowable displacement exceedance taking into account the local site effect. The approach is applied to a well known landslide case: Congress Street Landslide in Chicago. A sensitivity analysis was conducted on the different parameters involved in the models by applying those models to the Congress Street landslide considering different levels of seismic hazard. Also, a sensitivity analysis was carried out to study the sensitivity of computed results to input parameters of undrained shear strength, and corrective factors. A comparison was made between the different models of failure. The parametric study revealed that the hypocentral distance and earthquake magnitude have major influence on the earthquake induced displacement, probability of failure and dynamic 2-D and 3-D safety factors.     

保证国家资源安全的矿产资源基础研究思考

战略性矿产资源的基础研究是建立国家安全体系的关键之一。应加强成矿动力学研究，努力开拓成矿地球化学动力学新领域，注意发现矿床新类型，挖掘空白区，矿集区找矿潜力，加强深部找矿和成矿域，带研究，实施资源环境一体化，尽快建立我国矿产资源资源基础研究创新体系。     

《区域大地水准面精化外业作业指导书》的编制

对《区域大地水准面精化外业作业指导书》编制情况做了介绍,阐述了外业作业的流程、方法、内容、技术要求等,有利于规范区域大地水准面精化外业生产,有助于提高产品质量。     

基于GIS-T的旅游景点自动标识系统研究

以广州市旅游景点自动标识系统为例,系统地阐述了基于GIS-T的旅游景点自动标识应用系统的总体设计、关键技术和主要构建步骤。该系统在具备旅游景点信息查询和管理的功能基础上,实现了由计算机自动生成旅游景点指路标志的功能。面向旅游标识规划、管理部门,可实现对旅游交通标志规划和管理的科学化、自动化,并能为交通、旅游等相关部门或行业设立标识提供依据与支持。     

软弱破碎围岩双连拱隧道安全施工与监测

针对软弱破碎Ⅱ类围岩双连拱隧道采用三导洞施工方法的特点,阐述了其安全施工技术要点,实际施工中,就其监测内容及监测结果进行了实时分析,为隧道安全施工提供了依据,长期监控量测结果表明,该隧道结构是安全的,达到了围岩与支护结构体系安全与稳定的要求,所采用的安全施工措施以及信息化施工方法对类似工程具有指导和借鉴意义.     

面向指路标志系统的交通网络数据模型及应用

指路标志指示的信息与路网的拓扑数据、几何特征和交通网络的服务规则紧密相关。在传统的弧段—结点数据模型基础上拓展了结点—邻近结点拓扑关系,加入与交叉口相关的路网几何特征和交通网络服务规则,建立面向指路标志系统的交通网络数据模型。将这种数据模型应用于广州市城市路网的指路标志系统中,实现了城市路网指路标志的自动生成。     

Geologic hazards along part of Al-sayl–Alkabeir Al-Jammum road in Saudi Arabia

 The geological hazards along part of Al-Sayl Alkabeir Al-Jammum road, western Saudi Arabia, were studied by the use of the sterographic projection to define the types of possible failures and the magnitude of safety factor on each slope face. The studied area consists of granite and granodiorite rocks that were cut by acidic and basic dikes. There are four sets of structural discontinuities which, besides a few strike slip faults, constitute the planes of weakness that lead to a variety of possible mode failures. The stability analysis indicates that sections of the road are unstable as their cut slopes exceed the maximum safe slope angles which range between 65° and 73°. Received: 16 June 1998 · Accepted: 2 March 1999     

大数据在胜利油田海上安全生产情景构建中的应用

文章介绍了海上生产大数据分析以及海上安全生产情景构建的概念,阐述了海上安全生产情景构建的特点、情景构建的基本方法及情景构建的内容,并介绍了这种创新的安全生产管理模式在海上船舶的紧急撤离及海上溢油事故的紧急处置的应用实例。随着大数据技术应用的不断发展,在海上安全生产上的应用也将不断扩大,从而增强应急资源共享和信息整合的可操作性,减低海上生产运行的风险,大大提高海上生产的安全管理水平。