Applied Research Of Shallow Seismic Exploration In Uranium Exploration In Baolongshan-Taipingchuan Area

The Songliao Basin is a large Mesozoic and Cenozoic sedimentary basin in the north of our country,rich in mineral resources such as petroleum,natural gas,and radioactivity.In recent years,with the deepening of the exploration of sandstone-type uranium deposits in the Songliao Basin,large uranium deposits such as Qianjiadian,Baolongshan,Dalin and Hailijin have been discovered in the southwestern part of the basin,indicating that sandstone in this area Type-type uranium mineralization has superior geological conditions and huge prospecting potential.It is one of the key areas for uranium exploration.How to quickly ascertain the uranium metallogenic geological and environmental problems such as the buried depth of the basement,the structure of the caprock,the fault structure,the prospecting target layer and the development characteristics of the sand body in this area,has become the key to the prospecting breakthrough.In the past,the methods for finding sand bodies in the exploration of sandstone-type uranium deposits in the area were mainly electromagnetic sounding methods,drilling methods,seismic facies and attribute analysis methods.In the early days,the above methods have achieved good results in the identification of uranium ore sand bodies,but with the deepening of uranium exploration and development and the demand for refined interpretation of prospecting target layers,more accurate seismic exploration methods are required for key exploration areas in the region.To solve the problem.This paper takes the Baolongshan-Taipingchuan section of Tongliao area in the southwestern Songliao Basin as the research object,and uses shallow seismic exploration methods as a means to carry out technical research on seismic data acquisition,data processing and interpretation,and initially establishes a set of sandstone types.Uranium ore seismic prospecting technology method system.Based on the previous three seismic profile data in the study area,a series of processing and mapping such as filtering,velocity analysis,superposition,attribute calculation,etc.were carried out.Combined with the known geology,boreholes and other data in the area,a comprehensive seismic-geological interpretation study was carried out.The geological and environmental problems of sandstone-type uranium mineralization,such as caprock structure,fault structure,lithology and facies,buried depth and thickness of the target layer,and ancient channels,have been roughly investigated in the study area,and favorable sectors for uranium prospecting have been predicted,which is a drilling project.The arrangement provides the basis.The main results achieved this time are as follows:1)Inferred and explained the 7 reflection planes in the area and their corresponding relationship with the strata,inferred and explained 17 main fault structures,and basically found out the fault structure framework of the working area;2)The seismic facies,sedimentary facies and stratigraphic lithology of the work area are analyzed and explained;3)Inferred and explained the channel distribution characteristics of the lower rock section of the Upper Cretaceous Yaojia Formation in the work area and the distribution range and scale of sand bodies,and summarized the favorable uranium prospecting areas in the work area.