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储层裂缝发育程度的判别准则

石油学报 2004年第4期25卷 33-37页

作者：张流周永胜中国地震局地质研究所北京100029

实验研究表明 ,变形导致的岩石微破裂会使岩石产生扩容 (体积膨胀 )和非线性变形。当差应力达到岩石的屈服应力时 ,扩容和非线性应变开始。此外 ,随应力水平的增加 ,扩容和非线性变形呈幂函数形式增加。在围压低时 ,最大扩容量呈上升趋... 详细信息

实验研究表明 ,变形导致的岩石微破裂会使岩石产生扩容 (体积膨胀 )和非线性变形。当差应力达到岩石的屈服应力时 ,扩容和非线性应变开始。此外 ,随应力水平的增加 ,扩容和非线性变形呈幂函数形式增加。在围压低时 ,最大扩容量呈上升趋势 ,围压较高时呈下降趋势 ;非线性应变量随围压的增加而呈单调增加。这一结果可作为评价裂缝型油气藏裂缝发育密集程度的一种判别准则。与以往用破裂准则、应力和应变能大小等评价裂缝发育程度的方法相比 ,它更真实地反映了裂缝形成、扩展直至饱和阶段与应力的对应关系。扩容和非线性变形之间的差异在于扩容更偏重于张性裂缝 ,非线性变形更偏重于剪切裂缝。

关键词：裂缝型油气藏微裂缝发育程度判别准则扩容非线性应变实验研究

Characteristics of Large Earthquake Recurrence and Determination of Average Recurrence Interval Value

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Earthquake Research in china 2000年第1期14卷 90-100页

作者： Ran Yongkang and Deng Qidonginstitute of Geology, china seismological bureau, {2. 10002., china institute of Geology China Seismological Bureau Beijing 100029 China

Paleoearthquakes in the Yanqing-Huailai basin and on the Haiyuan fault are studied in *** result indicates that the recurrence behavior of large earthquakes is of a wide *** earthquakes show the behavior characteristics of the activity of most faults,butthey are of different grades,the recurrence interval of large earthquakes is of staged nature,and the interaction between faults has effects on the recurrence sequence of large ***,when the recurrence behavior of large earthquakes is staged in time or when thegradation of characteristic earthquakes has led to a sharp difference in recurrence intervalbetween paleoearthquakes of different intensities,for estimating the large earthquake risk bythe deterministic method and time-dependent probabilistic method,it is necessary to calculatethe recurrence interval value separately for each specific stage or grade in order that theaverage recurrence interval values of different stages can be determined.

关键词： Paleoearthquake Earthquake recurrence Prediction of earthquake risk Recurrence interval

SEISMIC HAZARD ASSESSMENT AND EARTHQUAKE DISASTER MITIGATION IN china

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Natural Disaster Reduction in china 1996年第1期 8-17页

作者： Zhang Peizhen(institute of Geology,State seismological {2.,beijing 10002.,P.R.china)

ＳＥＩＳＭＩＣＨＡＺＡＲＤＡＳＳＥＳＳＭＥＮＴＡＮＤＥＡＲＴＨＱＵＡＫＥＤＩＳＡＳＴＥＲＭＩＴＩＧＡＴＩＯＮＩＮＣＨＩＮＡＺｈａｎｇＰｅｉｚｈｅｎ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉ...

ＳＥＩＳＭＩＣＨＡＺＡＲＤＡＳＳＥＳＳＭＥＮＴＡＮＤＥＡＲＴＨＱＵＡＫＥＤＩＳＡＳＴＥＲＭＩＴＩＧＡＴＩＯＮＩＮＣＨＩＮＡＺｈａｎｇＰｅｉｚｈｅｎ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａｕ，Ｂｅｉｊｉｎｇ...

关键词：

Quantitative Tectonic Markers of Large Coastal Earthquakes in Fujian, Guangdong, Taiwan and Hainan——with a Discussion of Qualitative Indicators

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Acta Geologica Sinica(English Edition) 1997年第4期71卷 395-406,508-510页

作者： Bi Fuzhi Yuan Youshen institute of Crustal Dynamics, State seismological {2., beijing

This paper expounds the quantitative tectonic indicators and some qualitative indicators of large earthquakes in the coast areas of Fujian, Guangdong, Taiwan and Hainan. The main quantitative indicators include uplift amplitude of the Moho, Quaternary and Late Holocene coasts. The paper also gives a brief account of the research method on quantitative indicators of surface uplifted zones. Taiwan is a famous neotectonic zone and an area of large earthquakes in the world. There is only one large-earthquake area in each of Fujian, Guangdong and Hainan Provinces. Along the coast large earthquake areas there are certainly many remains of crustal activity. Among these remains, coast activity, taking the sea level as the accurate marker horizon, can determine not only the amplitude of coastal elevation and subsidence in a certain period, but also the cycle and rate of positive or negative movements.

关键词： quantitative tectonic indicator of large earthquake uplift amplitude of the oho uplift amplitude of the Quaternary high beachrock cycle of coastal large earthquakes

Earthquake damage and loss estimation with Geographic Information System

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Acta Seismologica Sinica(English Edition) 1998年第6期11卷 95-102页

作者： YONG CHEN GE PING LI QI FU CHEN LING CHEN MIN FENG LI Center for Analysis and Prediction, china seismological bureau, beijing 100036,{2.

The present paper first includes a brief discussion of GIS technology. Next, the various steps in a regional earthquake damage and loss analysis are discussed, with emphasis on their implementation in the GIS environment. Lastly, a software of WorldRisk which was completed recently are presented to illustrate GIS based global earthquake damage and loss estimation.

关键词： GIS earthquake damage loss estimation

The Rapid Inversion of 3-D Potential Field and Program Design

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Acta Geologica Sinica(English Edition) 1986年第4期 83-96页

作者： Feng Rui institute of geophysics, State {2. bureau, beijing Yan Huifen and Zhang Ruoshui Geophysical Exploration Party, State {2. bureau, beijing

The application of three-dimensional inversion of gravity and magnetic fields is very important not only in geophysical researches, but also in the study of geological structures. A formula of potential field in frequency-domain, developed by Parker in 1973, can be used as a rapid and effective algorithm in gravity and magnetic inversion. The technique has been improved then by Oldenburg, Sprenke, Feng and *** addition to a brief introduction of Parker’s algorithm and its applications, this paper includes the following five parts: basic computational techniques, inversion of single layer, convergence and constraints, simultaneous inversion for density and topography as well as inversion of multilayers. The authors present relevant practical iterative formulas and its varieties when density distribution varies with depth in linear or exponential relation. In order to maintain computation stability and speed up iteration convergence, some approaches are taken in the program design, for instance shifting lower interface of the studied layer, inverting corrections of topography, reducing grid boundary effects and utilizing low-pass filter. With the consideration of the nonuniqueness of the inversion, a method of using seismic data to constrain the range ofpossible models is discussed. It is pointed out that the density variation generates less effects than those of topography on the spectrum of gravity anomaly in second order. Therefore density contrast and topography can be inverted simultaneously by an alternative weighting iteration. By analogy, the inversion of multilayer model can be done in the above procedure. An approach of model decomposition is useful in the computation of multilayer model. The techniques discussed in the present paper for gravitational field are also valid for magnetic field.

关键词： The Rapid Inversion of 3-D Potential Field and Program Design

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Research Note

Acta Seismologica Sinica(English Edition) 1996年第1期9卷 147-155页

作者： CUI YING ZHOU 1) , YU XIA ZHANG 2. , HONG WEI WANG 1) and LI QIANG JIAO 2. 1) seismological bureau of Shandong Province, Jinan 2.002.,{2. 2. Center for Analysis and Prediction, SSB, beijing 100036,{2.

Ｃｏｍｐｒｅｈｅｎｓｉｖｅｉｎｄｉｃｅｓｏｆｅａｒｌｙｊｕｄｇｅｍｅｎｔｆｏｒｅａｒｔｈｑｕａｋｅｓｅｑｕｅｎｃｅｔｙｐｅｂｙｐａｔｅｒｎｒｅｃｏｇｎｉ┐ｔｉｏｎＣＵＩ－ＹＩＮＧＺＨＯＵ１）（周翠英），ＹＵ－ＸＩＡ... 详细信息

Ｃｏｍｐｒｅｈｅｎｓｉｖｅｉｎｄｉｃｅｓｏｆｅａｒｌｙｊｕｄｇｅｍｅｎｔｆｏｒｅａｒｔｈｑｕａｋｅｓｅｑｕｅｎｃｅｔｙｐｅｂｙｐａｔｅｒｎｒｅｃｏｇｎｉ┐ｔｉｏｎＣＵＩ－ＹＩＮＧＺＨＯＵ１）（周翠英），ＹＵ－ＸＩＡＺＨＡＮＧ２）（张宇霞），ＨＯＮＧ...

关键词： earthquake sequence pattern recognition comprehensive diagnostic index.

Some problems in application of MDD model (Ⅰ)——Subtraction of excess Ar released at low temperature

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Chinese Science Bulletin 1999年第18期44卷 1694-1697页

作者： LI Qi and CHEN Wenjiinstitute of Geology , china seismological bureau , {2. 10002., china

In the process of 40Ar/39Ar experiment, excess 40Ar(10ArE) released from K-feldspar at low temperature step may mask the real age and thermal history information of the sample. A method for Cl correction of 40ArE has ... 详细信息

关键词： excess argon Cl correction method MDD model.

seismological Research on the Mining Tremors

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Earthquake Research in china 1995年第1期9卷 12-19页

作者： Zhang Shaoquan and Guan JieInsntute of geophysics,SSB,beijing 100081,{2. beijing Mining bureau,beijing 102.00,{2.

A sophisticated seismological method has been introduced to the study of mining tremors by the institute of {2.,SSB in cooperation with the beijing Mining bureau of *** have been obtained in the following areas:modification of the seismic monitoring system,compilation of a software package for analysis of mining tremors,research on the mechanical model for mining tremors,classification of mining tremors and development of an expert system of tremor prediction.

关键词： Mining earthquake seismological surveillance Expert system