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在汶川地震氡震后效应特征的分析研究的基础上,对氡震后效应变化规律及机理展开了初步的探讨。按水氡阶变上升速度与恢复时间的长短,近场水氡震后效应可分为短期恢复型与长期不恢复型,远场水氡震后效应可分为短期恢复型与长期不恢复型。针对氡震后效应的4种变化规律,提出了4种可能的机理:破裂混合机理、破裂射气增大机理、振动射气增大机理、裂隙开启-闭合机理。研究氡震后效应变化规律及其机理,是从另一角度探讨氡的来源、迁移、表现与应力-应变、含水层动力学特征之间的关系,为氡地震前兆机理的研究与前兆异常判定提供一定的理论依据。
Based on the analysis of the post-earthquake effect of radon in the Wenchuan earthquake, a preliminary discussion is made on the regularity and mechanism of post-earthquake radon recovery. According to the rising rate and recovery time of radon stratum, the post-earthquake water radon post-earthquake effects can be divided into short-term recovery type and long-term non-recovery type. The post-earthquake radon effects can be divided into short-term recovery type and long- . According to four kinds of variation regularity of radon post-earthquake effect, four possible mechanisms are proposed: the mechanism of fracture mixing, the mechanism of ruptured arcing, the mechanism of vibrational increase of arrester and the mechanism of opening-closing of cracks. Studying the rule and mechanism of radon post-earthquake post-earthquake effect is to discuss the relationship between source, migration, performance of radon and the dynamic characteristics of stress-strain and aquifer from another angle, and to study the precursor mechanism of radon earthquake and the judgment of precursor anomaly Provide a certain theoretical basis.