甘肃省测震台网地震台站地震计方位角检验与校正

利用2007年8月—2013年9月甘肃省测震台网记录的549个MS≥6远震事件的P波资料,对所属44个地震台站分量方位等问题进行检核计算。考虑到地震计维修、更换等因素,提供了甘肃省测震台网地震台站按时间序列计算的方位角偏差及方位校正变化情况,以保障测震台网数据的连续性与可靠性。研究结果表明,反演的方位偏差与文献[1]的结果基本一致,表明中国"十五"数字地震网络确实存在部分台站方位偏差较大等方面问题。因此,在进行现代地震学研究中应充分考虑台站地震计方位误差较大和研究时间段内方位角变动等因素的影响。     

Lacustrine transgressions in the late Cenozoic Ussuri-Khanka depression (Primor’e)

In the Ussuri-Khanka depression of Primorye, the Quaternary alluvial-lacustrine and lacustrine sedimentogenesis progressed under conditions of transgressive accumulation in response to the depression tectonic subsidence and recurrent climatic fluctuations. The alluvial dams and irregular accumulation are proved to have been the leading factors of lakes’ formation within the depression. As is shown, fluctuations of the water level in limnic reservoirs depended on the climatic changes. New data considered in this work confirm the lacustrine genesis of a greater part of the Middle Pleistocene-Holocene sedimentary succession in the Khanka depression. Two transgressive phases, when the water level in the lakes rose by 1.5–2.0 m above the present one, are established for the Subboreal. The general conclusion is that the mesorhythmic structure of the sedimentary succession in the Ussuri-Khanka depression reflects the influence of climatic fluctuations in the Late Cenozoic.     

基于规则的拓扑在地理国情普查空间数据质量检查中的应用

在研究ArcGIS基于规则的拓扑关系的基础上,探讨了基于规则的拓扑在第一次全国地理国情普查空间数据的质量检查中的应用,并以某县地理国情普查数据为例,进行拓扑关系的创建与验证。     

语音处理技术在110联动报修系统中的应用

介绍了语音压缩处理技术在武汉市供电局 1 1 0联动报修系统中的应用。该系统需要对大量用户电话进行录音和压缩存储,因而语音处理技术在该系统中占据重要地位。     

风能资源观测数据省级传输系统

风能资源观测数据省级传输系统是国家风能资源数据库建设项目的一个重要组成系统,是全国风能及其相关数据和产品服务的基础,并已实现了观测数据的业务化传输。该系统由数据收集、收集处理、数据分发、传输监视等4个功能模块组成。数据收集模块功能由Linux下的socket编程实现,可收集实时和历史数据、备份数据、删除过时数据;收集处理模块功能由Linux下的C语言编程实现,可对数据的唯一性、正确性及格式进行检查;数据分发模块功能由Linux下的socket编程实现,可实时分发、失败重发、分发日志记录;传输监视模块具有监视、统计、信息查询和显示等功能。     

Probabilistic assessment of seismic hazard of dam sites in Jordan

A Probabilistic method is used to evaluate the seismic hazard of nineteen embankment dam sites in Jordan. A line source model developed by McGuire (1978) is used in this study. An updated earthquake catalogue covering the period from 1 A.D. to 1991 A.D. is used for this purpose. This catalogue includes all earthquakes that occurred in Jordan and adjacent areas, more specifically between latitudes 27.0°–35.5° N and longitudes 32.0°–39.0° E.Nine distinct seismic sources of potential seismic activities are identified. The seismic hazard parameters are determined using the method suggested by Kijko and Sellevoll (1989).The Peak Ground Acceleration (PGA) is selected as a measure of ground motion severity. Esteva (1974) attenuation relationship is used in evaluating PGA values at each dam site. Analysis is carried out for 50%, 90%, and 95% probability that is not being exceeded in a life time of 50, 100, and 200 years.Results of analysis indicate that PGA values are higher for dam sites closer to the Dead Sea Fault. This fault is believed to be responsible for most earthquake activities in Jordan and vicinity. The highest PGA value is found to be for Al-Karama dam site.     

Application of FLAC3D in supporting engineering of deep foundation ditch

Based on the design principles of economic rationality and safety, multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch. The designs, such as anchor arm, single pile and the whole, were set up in accordance with the calculations of the internal force from the equivalent beam and Yamagata Kunio methods. Moreover, the rationality of the design was estimated using the stability checks. FLAC3D was used for calculating the accuracy of the design. Using FLAC3D to simulating ditch cutting and supporting processes can obtain the equivalent results as the theory analysis in the displacement of ditch surrounding wall, the stress field and stress distribution.     

浅析如何做好测绘生产质量控制工作

如果说测绘生产是一项复杂工作,是获取基础数据的重要手段,那么测绘生产中的质量控制,就是测绘生产过程中的一个重要环节。本文详细讲述了如何在测绘生产中进行有效的质量控制,为提高测绘成果质量尽自己微薄之力。     

尾矿坝治理技术

尾矿坝在矿山环境的保护和治理中起到很大的作用，它主要应用于堆放和处理矿山生产所带来的废渣、废水等污染物质，而坝体浸润线过高会影响尾矿坝的稳定性。尾矿坝治理技术众多，重点介绍了管井法降水、垂直水平自流排渗法、水平自流排渗法、辐射井排渗法等。在结合实例讨论的基础上，综合分析了不同方法的优、缺点，并提出了其应用范围以及其在应用中应注意的技术问题。     

一种将“三调”外业数据转为“国情”外业数据的方法

基于"三调"外业核查成果,利用FME、Python和ArcMap进行了数据筛选和ETL流程处理,形成符合基础性地理国情监测要求的外业核查成果。除了需要人工挑选照片及拍照点外,本方法实现了转换过程的自动化处理,转换过程不需要任何人工干预,避免了一些常见的人为错误,如错填、漏填信息等。