皖23井记震特征及水井记震能力的定量分析

THE CHARACTERISTICS OF RECORDING EARTHQUAKEAND QUANTITATIVE ANALYSIS OF CAPABILITY OFRECORDING EARTHQUAKE IN WAN 23 WELL

本文通过对皖23井记录到的59幅水震波图的主要参数的分析,发现该井记录水震波与地震发生的区域有关,存在明显分区记震特征。在分区对比分析的基础上,得到水位振荡幅度与震级、震中距的关系如下:Ⅰ区:logA=-5.0569+0.8906Ms-0.2730log△Ⅱ区:logA=-4.0201+0.8614Ms-0.5855log△Ⅲ区:logA=-3.5998+0.8290Ms-1.0162log△水位振荡持续时间与震级间的关系式如下:Ⅰ区:logT=-6.1248+1.0181MsⅡ区:logT=-4.0189+0.7556MsⅢ区:logT=-5.4129+0.9178Ms文章还对其记震能力作了定量分析,并提出了一种具有普遍意义的衡量水井记震能力的定量分析方法。

In this paper, the main parameters of 59 level fluctuation maps in Wan 23 well arc analysed and it is found that the earthquake-induced level fluctuation recorded by the well is related to regions where earthquakes have occurred and there is obviously a regional feature. Through analysing and comparing the level fluctuations induced by the earhtquakes occurred in the four regions, the reletion between level vibration amplitude and magnitude, eplcantral distanec is obtained as follows.Region Ⅰ. LogA= -5.0569+0.8906Ms-0.2730LogΔRegion Ⅱ. LogA =- 4.0201 + 0.8614Ms - 0.5855LogΔRegion Ⅲ. LogA= - 3.5998 + 0.8290Ms - 1.0162Log Δ The relation between level vibration and magnitude also is obtained as follows:Region Ⅰ. LogT= -6.1248+1.0181MsRegion Ⅱ. LogT= -4.0189 + 0.7556MsRegion Ⅲ. LogT= -5.4129+0.9178MsThe capability of recording earthquake of Wan 23 will also is quantitatively analysed and a method of quantitative analysis which is generaly applicable for other wells to measure capability of recording earthquake is offered in this paper.