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本文通过氡射气性能的压力实验,氡射气分配系数实验和岩石的溶滤实验等,对地下水氡及其它地震地球化学前兆机理进行了探讨。实验表明:氡射气的最高值发生在岩石严重破裂时;岩石射气性能高低与其本身的铀含量成正比;岩石在压力作用下射出的氡气在水中的分配大于在气相中的分配;岩石在饱和CO_2水中和压力作用下的溶滤程度要比在纯蒸馏水中和常压下大得多。因此,地震前地下水氡浓度和水中离子组分和气体组分会出现异常变化,而这种变化既与应力作用有关,又与地球内部水-气-岩系统在地震孕育过程中的物理化学作用有关。
In this paper, radon groundwater radon and other precursors of earthquake geochemistry are discussed through pressure experiments of radon gas, radon gas distribution coefficient experiments and rock dissolution tests. The experimental results show that the highest value of radon gas occurs when the rock is severely ruptured; the performance of rock gas is proportional to its own uranium content; the distribution of radon in rock under pressure is greater than that in the gas phase; Under saturated CO 2 water and pressure, the degree of leaching is much greater than in pure distilled water and at atmospheric pressure. Therefore, the groundwater radon concentration before the earthquake and the water ion and gas components will appear abnormal changes, and this change is both stress-related, but also with the Earth’s interior water-gas-rock system in the geophysical process of physical and chemical effects .