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Based on imitative experiment of structure mechanics,four-aperture defocusedspeckle shearing interferometry is used to obtain the distribution of strain field of the geologicstructure model of the Jiulong mountain in Sichuan Basin.And through the analysis of the ex-perimental data,we can give some experdriental basis for recognizing the distribution of thegeologic fracture in the district of the Jiulong Mountain. Exploration practice shows that fracture distribution predicted by theory agrees with actu-al situation.
Based on imitative experiment of structure mechanics, four-aperture defocusedspeckle shearing interferometry is used to obtain the distribution of strain field of the geologicstructure model of the Jiulong mountain in Sichuan Basin. And through the analysis of the ex-perimental data, we can give some experdriental basis for recognizing the distribution of the geologic fracture in the district of the Jiulong Mountain. Exploration practice shows that fracture distribution predicted by theory agrees with actu-al situation.