地震分析应用软件包

快速,准确地测定出每个地震的参数,编写单台地震报告是地震台站的主要任务。本软件实现了地震分析程序化既满足了台站人员的要求,提高了工作质量,又提高了工作效率。由于本软件使用了三次样条函数插值进行计算数据处理,具有一定的容错能力,实现了计算机自动处理ＲＭＺ量规函数据的插值计算,思路独特,方法简练。本软件最大的特点是具有一定的智能化;输入方法简单,程序操作易懂;免除了以往台站人员的抄写,查表等繁琐劳动。     

Determining the time and space domains for estimating b value in seismic zoning

To take the seismic zone that includes the great shock with M _s≥8.2 as the statistical unit of estimating b value can often lead to more large variance, because the seismogenic zone of the great shock with M _s≥8.2 are larger than that delineated in general seismic zone. Two-level statistical units are considered in this paper. The seismic province is the first level unit that is suitable for group of earthquakes including the great shock of M _s≥8.5. A seismic province can be divided into several seismic zones. They can be taken as the second level unit for group of quakes in which the super magnitude of the greatest shock do not exceed 8. Because of the nonstationarity in time of seismic activity, the unbalancedness of data and differential of seismic temporal series feature in different areas need to be considered when we select the time period for estimating b value. According to local conditions, the time period is selected at one’s discretion in order to reflect seismicity level of this statistical unit in future 100 years. Contribution No. 98A02039, Institute of Geophysics, China Seismological Bureau, China.     

Frequency response of tiltmeters and tidal factor

The relation of tidal factor value to tiltmeter type has been founded from the harmonic analysis for observational data. The relation is deducted theoretically. It is discovered that the frequency responses of different type tiltmeters and operative periods or damping constant are slightly different in same station. The tiltmeter of small operative period is able to receive more precursory information. That is the tidal factors obtained from harmonic analysis for observed data on tiltmeter of different damping constant are different. The relation between frequency response and tidal factor is searched. It is necessary to calibrate absolutely tiltmeter to predict earthquake. In order to obtain any amount of ground tilt information, it is necessary to select appropriately different frequency tiltmeters to make comprehensive observation. The study is sponsored by the Chinese Joint Seismological Science Foundation, No. 91100.     

强震序列叠加时h值计算及其震情预测应用

在强震群活动中定量计算并扣除前面强震序列的影响是正确估算后续强震序列频度衰减系数ｈ值的关键。     

长江三峡链子崖危岩体防治工程中的锚固钻孔工艺

介绍了长江三峡链子崖危岩体的概况以及整治危岩体中造锚索孔的技术,包括钻机在高空排架固定、防止孔斜及测斜、破碎带和大裂缝的钻进技术,以及大裂缝的堵漏技术。     

多宝山-铜山陡斜矿体深孔受控定向钻进工艺

在老矿区勘探时,针对新布置的钻孔大多数是两老孔中间的加密孔或后排孔这一特点,给出了新布置钻孔轴线的设计方法以及采取的造斜、纠斜技术措施,取得了较好的效果。     

东南沿海地震带b值统计

本文讨论可信的历史地震资料和现代化仪器记录资料的统一使用问题。     

计算机在地质构造成图中数学方法及原理研究

目前利用计算机绘制图形的软件很多,特别是作平面等值线图的软件,如ＳＵＲＦＥＲ、ＧＲＡ－ＰＨＥＲ等,但这些软件在平面上作图时均不考虑地质构造线,因此这些图件远不能满足地质工作者的需要。为此,本文为了解决上述问题从数学方法、原理方面作一简要说明,对于计算机处理过程作了较完整的叙述。     

五大连池药用矿泥的主要特点及其药用价值

五大连池药用矿泥２００目筛上样品主要由玄武质火山碎屑、石英、辉石以及其它少量晶屑组成，２００目筛下样品由伊利石、绿泥石、高岭石和石英、少量长石等多种粘土矿物组成。该矿泥应属于与本区多期火山喷发物源有关的表生泥质沉积。由于这种沉积矿泥有特殊成因，从而具有药用价值