砂岩型铀矿弱信息提取及综合评价方法技术研究

Studies on methods and techniques of weak information extraction and integrated evaluation for sandstone-type uranium deposits

砂岩型铀矿弱信息提取及综合评价技术是当前铀矿勘查中的重要研究内容之一。通过近几年的研究，提出了航磁、航放弱信息提取的内涵，研究了航磁、航放弱信息形成理论，建立了有效的弱信息提取数学模型；基于 GIS 软件，实现了弱信息提取模型，并开发了专家打分综合评价模型。在某地区，应用 GIS 软件完成了航磁、航放弱信息提取试验和铀资源综合评价。研究结果表明，弱信息提取和综合评价技术可快速缩小砂岩型铀矿找矿靶区，提高预测精度。

Weak information extraction and integrated evaluation for sandstone-type uranium depositsare currently one of the important research contents in uranium exploration.Through several years re-searches,the authors put forward the meaning of aeromagnetic and aeroradioactive weak informationextraction,study the formation theories of aeromagnetic and aeroradioactive weak information and es-tablish effective mathematic models for weak information extraction.Based on GIS software,modelsof weak information extraction are actualized and the expert-grading model for integrated evaluation isdeveloped.The trial of aeromagnetic and aeroradioactive weak information and integrated evaluation ofuranium resources are completed by using GIS software in the study area.The researchful resultsprove that techniques of weak information extraction and integrated evaluation may further delineatethe prospective areas of sandstone-type uranium deposits rapidly and improve the predictive precision.