TVU耦合作用对砂岩型铀矿岩氡析出影响的试验研究
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摘要
采用自主设计的极端条件下多场耦合作用下氡析出测试装置,探究了在耦合作用下砂岩型类铀矿岩的氡析出规律。试验块以南方某铀尾矿砂为骨料,以高强水泥、精铁粉、蒸馏水为基础原料模拟衡阳汪家冲盆地白垩系砂岩。试验结果表明,析出罐内的试验块氡析出率与超声波功率呈线性增长。在激振器水平往复式振动作用下,氡析出率随频率增长而增加。在温度梯度的作用下,随着温度梯度递增,氡析出率也随之增大。在温度一定时,在低频振动和超声波共同作用下,试验组氡析出率的变化率趋于定值。通过正交试验方差分析,得出在三因素下,温度显著性最大,为控制氡析出提供了优先控制因素。
The law of radon exhalation from sandstone uranium rocks under multi-coupling effect by using the self-designed radon exhalation apparatus under severe conditions was carried.Experimental blocks of sandstone uranium rocks were made by employing a uranium tailing sands as the aggregate,applying high-strength cement,iron powder,distilled water as the foundation materials in order to simulate cretaceous sandstone at Hengyang Wangjiachong basin.Experimental results show that when the power of ultrasonic increases,the radon exhalation rate of uranium rocks is increased linearly.As the frequency of rock sample is expanded,under the condition of sample block in the emanation vessel with vibrated horizontal movement,the radon exhalation rate is intensified.While temperature rises,radon exhalation rate of samples is increased.When temperature remains constant and under the condition of the vibration with low frequency and ultrasonic,the radon exhalation rate of the sample group tends to be constant.Through analysis of variance of the orthogonal test,the temperature is the most significance from the three factors,which can provide preferential control factor to reduce radon exhalation rate.
The law of radon exhalation from sandstone uranium rocks under multi-coupling effect by using the self-designed radon exhalation apparatus under severe conditions was carried.Experimental blocks of sandstone uranium rocks were made by employing a uranium tailing sands as the aggregate,applying high-strength cement,iron powder,distilled water as the foundation materials in order to simulate cretaceous sandstone at Hengyang Wangjiachong basin.Experimental results show that when the power of ultrasonic increases,the radon exhalation rate of uranium rocks is increased linearly.As the frequency of rock sample is expanded,under the condition of sample block in the emanation vessel with vibrated horizontal movement,the radon exhalation rate is intensified.While temperature rises,radon exhalation rate of samples is increased.When temperature remains constant and under the condition of the vibration with low frequency and ultrasonic,the radon exhalation rate of the sample group tends to be constant.Through analysis of variance of the orthogonal test,the temperature is the most significance from the three factors,which can provide preferential control factor to reduce radon exhalation rate.
引文
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[13]姜必广,沈赵明,祝兵,等.衡阳盆地砂岩型铀矿地质特征与成矿模式---以汪家冲铀矿床为例[J].铀矿地质,2017,33(2):82-88.
[2]罗光伟.岩石破裂与氡含量变化关系的试验研究[J].地球物理学报,1977,20(4):277-282.
[3]陈颙.李庶林.单轴压力下岩石破裂的初步研究[J].地球物理学报,1976,19(4):1-8.
[4]DIPAK GHOSH,ARGHA DEB,ROSALIMASENGUPTA.Anomalous radon emission as precursor of earthquake[J].Journal of Applied Geophysics,2009(6):67-81.
[5]KUlAlI F,AKKURT I,ZGUR N.The correlation of the seismic activities and radon concentration in soil gas[J].Arabian Journal of Geosciences,2018,11(16):447-448.
[6]RIGGIO A,SANTULIN M.Earthquake forecasting:a review of radon as seismic precursor[J].Bollettino Di Geofisica Teorica Ed Applicata,2015,56(2):95-114.
[7]冯伟.饱水岩石超声振氡试验研究[J].地震地质,1981,3(2):1-5.
[8]王文,桂祥友,王国君.矿井热害的产生与治理[J].工业安全与环保,2003,29(4):33-35.
[9]曹众为.压力梯度和温度多孔射气介质氡析出率的影响探究[D].衡阳:南华大学,2013.
[10]张忠相,李向阳,邓文辉,等.温度对多孔射气介质氡析出影响试验研究[J].工业安全与环保,2016,42(6):30-32.
[11]侯价礼,杨风林.气温、气压、地震对氡从岩土中析出的影响[J].中国公共卫生学报,1989,8(2):67-71.
[12]刘凯旋,李向阳,赵勇,等.饱和水介质在超声作用下氡析出规律研究[J].工业安全与环保,2017,43(6):42-44.
[13]姜必广,沈赵明,祝兵,等.衡阳盆地砂岩型铀矿地质特征与成矿模式---以汪家冲铀矿床为例[J].铀矿地质,2017,33(2):82-88.