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一、地质概况 629地区位于某花岗岩体东南部外接触带。区内主要控矿岩石为中石炭系含炭粉板岩,含炭硅板岩及含炭泥板岩。矿体赋存于近东西向展布的F_(629)构造上盘,三号向斜轴部的C_(2x)~(2—2—2)含水岩层下部和C_(2x)~(2—2—1)隔水岩层上部(图1)。矿体倾角30—60°,呈脉状、似层状、薄板状。矿体埋深100—250米。地化环境为弱氧化带和过渡带。矿床属多源淋积型。矿化段矿石较破碎,有利于氡的迁移和扩散。
First, the geological overview 629 area is located in a granite southeastern outer contact zone. The main ore-controlling rocks in the area are Carboniferous Charcoal Slate, Carbon-Containing Slate and Carbonaceous Slate. The ore bodies occur in the upper east-west distribution of F_ (629) structural upper plate, the lower part of C_ (2x) ~ (2-2-2) aquifer and the area of C_ (2x) ~ 2-1) Upper part of aquifuge (Figure 1). Ore body angle of 30-60 °, was veins, like layered, thin plate. Buried depth of 100-250 meters. Geochemical environment for the weak oxidation zone and the transition zone. Deposits are multi-source deposit type. Mineralized ore more fragmented, is conducive to the migration and spread of radon.