山西洞体形变有震异常信息提取方法初探

Study on the method of extracting anomalies from cave deformation data in Shanxi Province

采用山西省的洞体形变 (倾斜 )观测资料 ,使用实效检验较有效的连续形变前兆参量及异常判别方法 ,结合具体的震例进行综合分析 ,得出适合山西洞体形变有震异常提取的两种方法即 :多台异常信息提取法和相关距平去年周期法。对这两种方法进行预报效能统计检验 ,得出它们的 R值评分分别为 0 .40和 0 .2 4。其中多台异常信息提取方法

The observation data of cave deformation(ground tilt)are processed with some effective parameters and methods in anomaly judgment.Combined with the analysis to some earthquake examples,two methods of extracting seismic anomalies from cave deformation data suitable in Shanxi province are obtained.They are the method of extracting anomaly information from multi-stations and the method of eliminating yearly period with correlative distance average. The prediction effect was examined by statistics method;the R-values of the two methods is 0.40 and 0.24 respectively.The R-value of the method is relatively high.