The seismic exploration technology of the sandstone-type uranium deposit in Wucaiwan area of Junggar Basin
Qu-Bo WU1,2, Cheng-Yin CAO1,2, Zi-Wei LI1,2
1. Beijing Research Institute of Uranium Geology,Beijing 100029,China 2. CNNC Key Laboratory of Uranium Exploration and Evaluation Technology,Beijing 100029,China
The study of the ore-forming environments of sandstone-type uranium,such as strata,folds,fractures and sand bodies,is significant for predicting and evaluating the uranium resource in Wucaiwan area of Junggar Basin.The technology of the two-dimensional seismic exploration was used to detect the ore-forming environment of sandstone-type uranium deposits for the first time and to tackle the problem that the traditional methods have low accuracy in surveying the structures and interpreting the sands in this area.On the basis of the previous methods,the related technology was improved through experimental research,a seismic data acquisition method based on vibroseis for sandstone-type uranium deposits in Junggar Basin was set up,a set of processing flow for the seismic data characteristics in the area was established,and the method for identifying the sand body was founded based on the seismic inversion technique of linear quasi-acoustic reconstruction.On such a basis,the fold morphology of "Shaqiuhe anticline,Lucaogou syncline,Huoshaoshan anticline,Xidagou syncline and Zhangpenggou anticline" in this area was basically ascertained.It is found that there exist ore-controlling fractures in the two wings of the Huoshaoshan anticline,and there exist the developing characteristics of sand bodies in target beds;meanwhile,an ore-forming favorable area was predicted.In conclusion,the established and improved seismic exploration technology for sandstone-type uranium deposits in the Junggar Basin can solve the problem of detecting the metallogenic environment of uranium deposits in this area.