花岗岩型铀矿床土壤天然热释光最佳测试条件研究与应用  

Measurement conditions of natural soil thermoluminescence and their application in a granite type uranium deposit

作　　者：陈越[1,2] 杨亚新[1] 刘庆成[1] 

机构地区：[1]东华理工大学,江西抚州344000 [2]核工业北京地质研究院,北京100029

出　　处：《铀矿冶》2009年第4期213-215,共3页Uranium Mining and Metallurgy

基　　金：国家自然科学基金项目(40774075);国防基础科研项目(A3420060145);国际科技合作项目(2007DFA20790)

摘　　要：利用土壤天然热释光测量方法寻找各种类型的铀矿床取得了较好的效果,测量参数对土壤热释光强度具有较大影响,针对不同类型的土壤样品应采用不同的测量参数。通过大量试验测量总结出花岗岩型铀矿床土壤天然热释光方法的最佳加热程序是:预热、线性升温、恒温和停止加热,各项参数为:升温速率15℃/s,第1恒温温度(t1)135℃,第2恒温温度(t2)400℃。利用总结的参数对广东小水地区已知矿区的土壤样品进行测量,结果表明,热释光异常与地下矿体有较好的对应关系。A measuring method of natural soil thermoluminescence is used for prospecting of uranium deposits. The better effects are obtained by using the method,but the parameters selected have signifi- cant effects on the intensity of soil thermolumineseent. So, the measuring parameters are selected according to the different soil samples. Based on the measuring 1 000 soil samples of granite type ura- nium deposit, the optimum heating up program of natural soil thermoluminescence is obtained, that is, preheating, lasting heating, constant temperature and the halting heating. The parameters select- ed are as follows： the heating rate being 15℃/s, the temperatures of the first and second constant temperature being 135 ℃ and 400 ℃ respectively. Using the selected parameters for measuring soil samples from a known mining area in Guangdong province, the result indicates that the abnormities of thermoluminescence have corresponding relations with the underground orebodies.

关 键 词：土壤天然热释光 升温速率 发光曲线 

分 类 号：P631.62[天文地球—地质矿产勘探]