CAJ | 학술논문

通过对砂岩进行单轴加载声发射试验，获取岩石破裂过程的应力‐应变曲线和相关声发射参数，综合分析了累计事件数、事件率、能率、声发射率之间随时间的变化规律。试验表明在加载初期小裂隙密集发育，后期以大裂隙发育为主。事件率和累计事件数没有明显前兆信息，声发射率和能率有明显的异常前兆。声发射定位表明裂隙发育由端部向中部转变，且无“空白区”阶段。声发射前兆信号为该类工程岩体的稳定性评价提供重要的理论依据。
통과대사암진행단축가재성발사시험，획취암석파렬과정적응력‐응변곡선화상관성발사삼수，종합분석료루계사건수、사건솔、능솔、성발사솔지간수시간적변화규률。시험표명재가재초기소렬극밀집발육，후기이대렬극발육위주。사건솔화루계사건수몰유명현전조신식，성발사솔화능솔유명현적이상전조。성발사정위표명렬극발육유단부향중부전변，차무“공백구”계단。성발사전조신호위해류공정암체적은정성평개제공중요적이론의거。
In order to analyze connections of stress‐strain diagram and AE parameter during rock failure process under uniaxial compression AE testing ,and at the same time ,make an analysis about synthesis variables such as accumulated AE events ,event rate ,energy rate ,AE rate versus time .Results indicate that little fracture forms at preliminary stage and larger fracture forms at final stage .Event rate and accumulated AE events have no manifest foreboding information ,but AE rate and energy rate are just the opposite .AE location suggests that fractures shift along time from end to central part without any phase of “blank space” .AE precursory signal is regarded as an important theory basis to estimate the stability of the rock mass .