海城震区一维介质中Q值的正反演计算     

黄玉国  赵国敏  孟补在  张中杰  白云 《东北地震研究》1995,(4)

本文从Ｑ值在地震学中的基本定义出发，对Ｑ值的计算公式进行了推导，给出了一维介质中Ｑ值正反演计算的基本方法和公式，并对海城震区一维介质中Ｑ值进行了试算。  相似文献   

New Seismic Zoning Map of Chin a and Its Application in Earthquake Disaster Mitigation     

Xie LiliInstitute of Engineering Mechanics  SSB  Harbin  China 《中国地震研究》1995,(4)

The New Seismic Zoning Map of China was prepared from 1987 to 1990 and officially promulgated in 1991.In comparison with the previous two seismic zoning maps prepared in 1957 and 1977,some new methods were applied to upgrade the method currently used for seismic hazard analysis.First,a probabilistic method was used instead of the deterministic analysis was used for previous mapping.Second,by taking advantages of the long history of historical seismic data in China,the nonhomogeneity of seismicity both in space and in time has been fully considered and hence the over-and/or underestimation of seismic hazard could be avoided.Third,the results of middle-and long-term earthquake prediction based on tectonic evidence have been incorporated into seismic hazard analysis.In addition,the attenuation laws for both intensity and peak acceleration of strong motion as the mapping parameters are also presented.Finally,an evaluation of the New Seismic Map and its effect on engineering application,such as aseismic desi  相似文献   

松辽盆地北部深层综合物探方法先导性研究          下载免费PDF全文

徐学军  张立恩  严洪瑞  姜继莲  田晓冬 《地震地质》2001,23(2):307-313

首先对岩石的速度、密度、磁化率、电阻率等物性资料进行统计分析 ,寻找它们之间的内在联系 ,在此基础上综合各种有用信息建立统一的物理 -地质模型。在统一的物理 -地质模型之上 ,进行重、磁、电、震单一方法的反演 ,分析各种物探方法反演结果的相容性与相背性 ,重新修改模型并进行重、磁、电、震的联合反演 ,最终确定深部地层的地质属性  相似文献   

镇扬大桥桥基区优势断裂显微构造特征及分段研究          下载免费PDF全文

汪明武  章杨松  李丽  罗国煜 《地震地质》2001,23(4):537-544

基于SEM和矿物组分分析研究了镇扬大桥桥基优势断裂断层泥的显微结构、显微构造和物质组成等特征 ,并进一步应用优势面理论进行分段研究 ,取得了较好的效果 ,其对大桥桥基断裂活动性和稳定性的评价具有重要意义 ,为建在断裂带上的特大型大桥工程的选址、设计以及确保安全运行提供了地质依据  相似文献   

QUADRATIC PLS REGRESSION   总被引：2，自引：0，他引：2  

AGNAR HSKULDSSON 《地理学报(英文版)》1992,(6)

We treat here an extension of linear PLS regression to include regression on quadratic PLS components.The quadratic regression can be viewed as a natural extension of linear PLS regression to quadratic PLSaccording to the H-principle of mathematical modelling.The numerical implementation is treated indetail.It is shown that this approach can be used for models with large numbers of variables.Somemodelling strategies are discussed depending on the purpose of the modelling.Applications of thisapproach are treated.  相似文献   

RELATIONSHIP BETWEEN VELOCITY PROFILE AND DISTRIBUTION OF SEDIMENT CONCENTRATION     

NI Jinren Professor  Dept. of Geography  Peking University HUI Yujia Professor  Dept. of Hydraulic Engineering  Tsinghua University 《国际泥沙研究》1993,(2)

I. ON THE INFLUENCING FACTORS OF THE SEDIMENT~LADEN FLOW VELOCITY PROFILEThe influence of sediment on the water--now structures must be considered when thevelocity profile of the sediment--laden now (or turbid flow) is studied. widely usedparameters for reflecting thoses influences are the sediment concentrahon and theffichardson number, where Ri represents the variation of the concentration gradient.Generally, the vertical distributions of sediment concentration and th…  相似文献   

RFT资料在多井储层评价中的应用   总被引：2，自引：0，他引：2  

杨少春  吴佩芳 《地质论评》1993,39(4):343-351

本文以东濮凹陷马厂地区为研究工区着重论述重复式地层测试(RFT)资料在多井储层评价中的应用。利用压力资料可定性、定量判断储层的渗透性,估算渗透率值可用于油层有效厚度标准研究,压力随深度梯度变化转换为密度变化来了解流体性质、确定油水界面,从而验证测井多井解释结论。研究表明,应用效果明显,解释结论得到试油试采证实,解释符合率提高,研究成果有助于研究工区油藏综合评价,部分成果已用于油田生产。  相似文献   

LY-921计算机实验装置的总体设计与调试     

甘伯祥  刘建英 《武汉大学学报(信息科学版)》1993,(4)

本文介绍LY—921计算机原理实验装置的总体结构设计和整机调试。该装置能进行计算机部件实验,整机实验以及小型数字系统调试等实验。  相似文献   

钻探工艺,取土方法与取土器结构对勘探质量和不扰动土样取土质量的影响     

乌孟庄 《上海国土资源》1990,(4):48-54

本文通过对比试验和生产实践的总结,分析了钻探工艺、取土方法和取土器结构对勘探质量和不扰动土样取土质量的影响,并提出了保证勘探、原状取土、标准贯入试验质量的一些具体设想和方法。  相似文献   

VELOCITY PROFILE OF SEDIMENT-LADEN OPEN CHANNEL FLOW     

LEE Hong Yuan  YU Wei Sheng Associate Professor  Dept. of Civil Engineering  National Taiwan University  Taipei  Taiwan  China  Graduate Research Assistant  Dept. of Civil Engineering  National Taiwan University  Taipei  Taiwan  China 《国际泥沙研究》1991,(1)

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