Research On Geogas Measurement Method And Its Application In Concealed Uranium Ore Exploration

As a strategic reserve resource and the main raw material for nuclear power,uranium resources will become more and more important as the country continues to develop and the world's oil and gas resources are consumed.However,after more than half a century of exploration work in China's uranium resources,most of the uranium resources located on the shallow surface have been proved,and their reserves are difficult to meet the long-term needs of the country.In order to ensure the long-term and stable supply of domestic uranium resources,China's future uranium resource exploration work must march deep into the earth.Geogas measurement methods rely on the element's deep penetration characteristics and have excellent ore-presenting ability for deep concealed uranium deposits.Therefore,it is of great practical significance to promote the application of geogas measurement methods in the exploration of uranium resources.In order to popularize the application of geogas measurement methods in the exploration of uranium resources,this paper has designed a relatively complete set of field survey schemes and supporting instruments,and carried out geogas survey work on the test profile and the Xiangshan unknown research area successively.Based on the previous research,the following work was completed: the collection medium used in this work was selected,and the final determination was to use a concentration of 2mol / L nitric acid 10 ml as the collection medium;through a self-developed constant flow geogas collector Active geogas collection;collected samples are analyzed by mass spectrometry for element content determination;data are divided into anomalous regions using traditional averaging methods and trend surface analysis methods respectively,and geogas element anomaly regions divided by trend surface analysis There is a good correspondence with the comprehensive data speculation area.Among them,the Xingshu Lower Zone,the northeast side of Lejia and the northwestern side of the research area basically correspond to the comprehensive data speculation results,indicating that the trend surface method has a better comparison with the abnormal geogas survey in this study area.Good effect.At the same time,COMSOL Multiphysics software was used to simulate the fluid flow in porous media to understand the relationship between the geogas anomaly and the ore body under different conditions,and to make a qualitative judgment on the anomaly's anomaly on the surface.In this paper,through a set of laboratory experiments,numerical simulations,and large-scale field application studies,we have perfected a more mature set of geogas measurement instruments and supporting auxiliary tools,combined with scientific field measurement schemes and data processing methods.Multiple favorable mineralization prospect areas are divided,which is in good agreement with the results of the comprehensive data,which shows the effectiveness of the measuring instruments and data processing process in this paper,and shows that the work of this paper can be applied to hidden uranium deposits for the promotion of geogas measurement Exploration provides important experience and technology.