CAJ | 학술논문

对大理岩和花岗岩开展室内单轴多级加载试验，得到应力—应变，声发射参数、应力与时间关系。研究结果表明：在加载初期，两者没有明显的声发射现象，表明试件中原有张开性结构面或微裂隙逐渐闭合；在稳压阶段，大理岩声发射活动水平较低，岩石中有少量新生裂纹的产生或扩展；花岗岩声发射活动显著，岩石在载荷稳定时裂隙继续发展；临近破坏时，大理岩声发射活动水平较低，花岗岩声发射活动集聚增加。室内单轴多级加载试验在一定程度上反映工程岩体分级开挖时应力调整前后声发射的变化趋势。对高应力、多扰动的深部岩体，建议现场声发射监测岩体稳定性，岩爆等地质灾害时，应掌握合适的监测时机，对多中段同时开采的矿山深部岩体应加强顶底板、围岩、矿柱的声发射监测，为现场岩体稳定性监测与预报的判据提供了借鉴和思路。
대대리암화화강암개전실내단축다급가재시험，득도응력—응변，성발사삼수、응력여시간관계。연구결과표명：재가재초기，량자몰유명현적성발사현상，표명시건중원유장개성결구면혹미렬극축점폐합；재은압계단，대리암성발사활동수평교저，암석중유소량신생렬문적산생혹확전；화강암성발사활동현저，암석재재하은정시렬극계속발전；림근파배시，대리암성발사활동수평교저，화강암성발사활동집취증가。실내단축다급가재시험재일정정도상반영공정암체분급개알시응력조정전후성발사적변화추세。대고응력、다우동적심부암체，건의현장성발사감측암체은정성，암폭등지질재해시，응장악합괄적감측시궤，대다중단동시개채적광산심부암체응가강정저판、위암、광주적성발사감측，위현장암체은정성감측여예보적판거제공료차감화사로。
This paper offers laboratory tests on uniaxial multilevel loading of marble and granite,including stress-strain,acoustic emission parameters and stress of the relationship between time.The results show that,at the beginning of loading,the two are not apparent acoustic emission phenomenon,indicating that the original opening of the specimen surface structure or micro-cracks gradually closed;the regulator stage,marble acoustic emission activity level is low.There are rocks in a small amount of crack initiation or expansion of newborn;granite acoustic emission activity significantly,and rock fractures continue to develop at a stable load.When approaching destruction,marble acoustic emission activity level is low,granite AE activity increases agglomeration;multistage uniaxial loading test to some extent,reflect the classification of engineering rock excavation stress before and after adjustment when the acoustic emission trends.High stress,deep rock more disturbing,the proposed site geological disaster monitoring acoustic emission rock steady,rock burst like,should have the right to monitor the time,more mines in the middle of deep rock while mining,should strengthen the roof and floor,surrounding rocks,acoustic emission monitoring pillar for the monitoring and forecasting of rock mass stability criterion site for reference and ideas.