世界核地质科学2025，Vol.42Issue(4)：801-808,8.DOI:10.3969/j.issn.1672-0636.2025.04.010
某铀矿床镭-氡平衡系数的计算与探讨
Calculation and discussion of the radon-radium equilibrium coefficient in a uranium deposit
张江旭1
作者信息
- 1. 核工业二〇八大队,内蒙古 包头 014000
- 折叠
摘要
Abstract
A uranium deposit of typical sandstone-type was recently discovered in the northern Ordos basin,its exact resource is significant for enhancing China's resource supplement.This study addresses the issue of uranium content interpretation bias in gamma logging caused by the disruption of the radium-radon(Ra-Rn)radioactive equilibrium.Systematic field measurements and evaluations of the Ra-Rn equilibrium coefficient were conducted by deploying parameter boreholes in the mining area with the methods of geophysical parameter borehole measurements and ore core comparisons,the Ra-Rn equilibrium state within the ore body was observed and calculated.Results indicate that Ra-Rn equilibrium disruption is generally occurred in the ore body with different degrees.Measurements reveal that the Ra-Rn equilibrium coefficient for the upper and lower sub-members of the Lower Zhiluo formation ranges from 0.84 to 0.90,with an average value of 0.86.These findings demonstrate that gamma logging data in the deposit require correction.The measured coefficient can be sued to accurately reflect true uranium content and provides critical technical parameters for calibrating the uranium resource amount.gamma logging data at the certain deposit and offers valuable reference for defining Ra-Rn equilibrium coefficients in similar sandstone-type uranium deposits within the region.关键词
鄂尔多斯盆地/某铀矿床/镭-氡平衡/实际铀含量Key words
Ordos basin/a certain uranium deposit/Ra-Rn equilibrium/true uranium content分类
天文与地球科学引用本文复制引用
张江旭..某铀矿床镭-氡平衡系数的计算与探讨[J].世界核地质科学,2025,42(4):801-808,8.
