我国含铀煤矿床主要产于中—新生代陆相沉积盆地中。盆地基底为华力西至燕山期花岗岩(黑云母花岗岩、二云母花岗岩等),或酸性火山岩(火山碎屑岩),或二者均有,其含铀丰度大于8ppm,高于酸性岩克拉克值的3—10倍。基底含铀丰度高为成矿提供了丰富的铀源。铀矿区内的地下水一般为弱酸至弱碱性,重碳酸钾-钠型,硫酸、重 China’s uranium-bearing coal deposits are mainly produced in the Meso-Cenozoic terrestrial sedimentary basins. The basement of the basin is the Variscan-Yanshanian granite (biotite granodiorite, dacite mica, etc.), or acidic volcanic rocks (pyroclastic rocks), or both, with an abundance of uranium greater than 8 ppm and higher than that of acid rock Clarke 3-10 times the value. The high abundance of uranium in the basement provides a rich source of uranium for metallogenesis. Groundwater in uranium mining is generally weak to weak alkaline, potassium bicarbonate - sodium, sulfuric acid, heavy