单轴压力下花岗岩氡析出量的探究
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摘要
对不同的单轴压力下花岗岩氡析出量的影响进行实验探究,得到单轴压力值与花岗岩试样析出氡之间的关系,以此建立地质体处于孕震压密阶段时,氡析出量变化的实验模型。利用岩石三轴蠕(徐)变试验机对花岗岩试样进行单轴加压,在不同的单轴压力下采用CR-39固体径迹探测器对试样氡析出量进行累计测量。当试样初始压密与弹性变形阶段时,氡析出量随压力的增大而降低。为地震前氡的负异常情况提供了一定的实验参考依据,对利用氡气异常预测地震提供一定的参考价值。
Background:For a long time,many scholars both at home and abroad have been engaged in radon monitoring for seismic forecast.Purpose:This paper deals with the relationship between uniaxial stress and rock radon exhalation,and wants to provide the basis of earthquake prediction by using the change of radon concentration. Methods:The uniaxial force applied on the granite sample is carried out using rock triaxial creep testing machine. The total accumulative measurement for sample radon emanation under different uniaxial pressure is performed using CR-39 solid track detector.Results:When the sample in the initial consolidation and elastic deformation stage,the radon emanation quantity with decreased the increase of the pressure.Granite samples' biggest axial displacement positively correlated to the uniaxial tension applied on them.With the development of time,the "native" fissure of sample is compressed tighter by degrees,lead to the smaller amounts of radon exhalation in fracture.Conclusions: This article provides some experimental reference for the negative anomalies circumstances of radon before earthquake.
Background:For a long time,many scholars both at home and abroad have been engaged in radon monitoring for seismic forecast.Purpose:This paper deals with the relationship between uniaxial stress and rock radon exhalation,and wants to provide the basis of earthquake prediction by using the change of radon concentration. Methods:The uniaxial force applied on the granite sample is carried out using rock triaxial creep testing machine. The total accumulative measurement for sample radon emanation under different uniaxial pressure is performed using CR-39 solid track detector.Results:When the sample in the initial consolidation and elastic deformation stage,the radon emanation quantity with decreased the increase of the pressure.Granite samples' biggest axial displacement positively correlated to the uniaxial tension applied on them.With the development of time,the "native" fissure of sample is compressed tighter by degrees,lead to the smaller amounts of radon exhalation in fracture.Conclusions: This article provides some experimental reference for the negative anomalies circumstances of radon before earthquake.
引文
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8胡丹,杨维耿,宋建锋.固体径迹氡探测器测量国际比对[J].核电子学与探测技术,2011,31(7):794-797 HU Dan,YANG Weigeng,SONG Jianfeng.The international comparison of Solid track radon detections[J].Nuclear Electronics & Detection Technology,2011,31(7):794-797
9郭美玉,童纯菡,刘晓辉.固体径迹探测技术在环境氡临测中的应用[J].矿物岩,2007,27(4):112-115 GUO Meiyu,TONG Chunhan,LIU Xiaohui.Solid track detection technology in the application of environment radon monitoring[J],Journal of Mineralogy and Petrology, 2007,27(4):112-115
10复旦大学编.原子核物理试验方法[M].北京:原子能出版社.1981/1982 Fu Dan University.Nuclear Physics Test Methods[M]. Beijing:Atomic Energy Press,1981/1982
2国家地震局科技监测司.地震监测与预报方法清理成果汇编地下水分册[M].北京:地震出版社,1988 State Seismological Bureau of Science and Technology Monitoring Division.Earthquake monitoring and prediction methods to clean up the results of assembly groundwater volume[M].Beijing:Earthquake Press,1988
3 Manwinder Singh,Ramola R C,Baljinder R Singh,et al. Subsurface soil gas changes associated with earthquakes[J].Nuclear Tracks and Radiation Measurements,1991,19(4):417-420
4韩学辉,王桂香.氡法监测地震的理想曲线模型探讨[J].太原理工大学学报,2000,31(1):101-103 HAN Xuehui,WANG Guixiang.The ideal curve model on earthquake prediction by Radon monitoring[J].Journal of Taiyuan University of Technology,2000,31(1): 101-103
5洪大卫,王涛,童英.中国花岗岩概述[J].地质论评, 2007,53(Supp):9-15 HONG Dawei,WANG Tao,TONG Ying.The overview of granite in China[J].Geological Review,2007,53(Supp): 9-15
6任宏微,刘耀炜,马玉川.汶川8.0级地震氡震后效应机理讨论[J].中国地震,2010,26(1):73-83 REN Hongwei,LIU Yaowei,MA Yuchuan.Discussion on mechanism of the post-seismic effect of radon in the weichuan M_s 8.0 earthquake[J].Earthquake Research in China,2010,26(1):73-83
7姜洪波.单轴压缩条件下花岗岩变形特征研究[J].有色矿冶,2011,27(1):16-17 JANG Hongbo.Deformation characteristics of granite ??under Uniaxial compressive loading condition[J]. Non-ferrousmining and Metallurgy,2011,27(1):16-17
8胡丹,杨维耿,宋建锋.固体径迹氡探测器测量国际比对[J].核电子学与探测技术,2011,31(7):794-797 HU Dan,YANG Weigeng,SONG Jianfeng.The international comparison of Solid track radon detections[J].Nuclear Electronics & Detection Technology,2011,31(7):794-797
9郭美玉,童纯菡,刘晓辉.固体径迹探测技术在环境氡临测中的应用[J].矿物岩,2007,27(4):112-115 GUO Meiyu,TONG Chunhan,LIU Xiaohui.Solid track detection technology in the application of environment radon monitoring[J],Journal of Mineralogy and Petrology, 2007,27(4):112-115
10复旦大学编.原子核物理试验方法[M].北京:原子能出版社.1981/1982 Fu Dan University.Nuclear Physics Test Methods[M]. Beijing:Atomic Energy Press,1981/1982
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