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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。
The influence of different uniaxial pressure on the amount of radon precipitation in granite was investigated and the relationship between the uniaxial pressure and the radon released from the granite sample was obtained. Based on this, the change of radon deposition was established when the geologic body was in the seismogenic compaction stage Experimental model. Granite samples were uniaxially pressed using a rock triaxial creep tester, and the CR-39 solid track detector was used to measure the radon exhaustion of the samples under different uniaxial pressures. When the sample initial compaction and elastic deformation stage, radon precipitation decreased with increasing pressure. It provides some experimental references for the negative anomalies of radon before earthquakes and provides certain reference value for the prediction of earthquakes with radon anomalies.