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本文根据菏泽震区41个自然村实测宏观地震烈度和24个自然村震害指数资料对比,表明菏泽5.9级地震极震区的宏观烈度与震害指数的符合率达80％,并根据震害的宏观烈度资料,确定菏泽5.9级地震宏观震中为前刘庄和后刘庄一带,震中烈度为Ⅷ度,震害指数(j)W分别是0.2、0.22。极震区宏观烈度Ⅶ度至Ⅶ度弱,震害指数大于或等于0.1,小于0.3。文中指出极震区等烈度线形态具有东西和北东分布的两重方向展布特征,认为此形态特征主要受控于菏泽震区的地震构造。据等烈度线形态、地震活动的空间分布、震区表层和深部构造资料等表明,菏泽震区具有特定的地壳结构和不均一的介质块体孕震构造条件,并指出聊考断裂带与菏泽断裂带的复合部位是菏泽4次强、中强地震的发震构造。
According to the comparison between the measured macroearthquakes and the damage indices of 24 natural villages in 41 natural villages in Heze earthquake area, it is shown that the coincidence rate of the macroscopic intensity of the Heze 5.9 earthquake with the earthquake damage index is up to 80% According to the intensity data, the macro epicenter of the MS 5.9 Heze earthquake is located in the area of Qianzhuang Zhuang and Houzhuang Zhuang, the epicenter intensity is Ⅷ degree and the earthquake damage index (j) W is 0.2 and 0.22, respectively. The macro-seismic intensity of the extreme earthquake zone is weak from Ⅶ to Ⅶ, and the earthquake damage index is greater than or equal to 0.1 and less than 0.3. It is pointed out in the paper that the dual-direction distribution features such as the east-west and north-east distributions of the contour lines of the extremely seismic zone indicate that this morphological feature is mainly controlled by the earthquake structure in the Heze earthquake zone. According to the contour of the intensity line, the spatial distribution of seismic activity, the surface and deep tectonic data of the epicenter, it shows that the earthquakes in Heze have a specific crustal structure and the seismogenic tectonic conditions of the heterogeneous medium blocks. The composite part of the fault zone is the seismogenic structure of the Heze strong and moderate earthquakes.