CAJ | 학술논문

为了解大坝混凝土浇筑过程中坝基岩体的压密效应，利用大岗山水电站坝基固结灌浆后长观孔的单孔声波及钻孔全景图像测试成果，对大坝浇筑过程中坝基岩体压密效应的影响因素、坝基岩体压密的时效性及钻孔全景图像特征进行了研究。结果表明，随着浇筑厚度的增加，坝基岩体表现出明显的压密效应，岩体波速逐步提高，裂隙的张开度逐步减小甚至消失；混凝土盖重厚度和岩体初始波速是影响岩体速度提高的重要因素。研究结果可为最终的固结灌浆验收提供依据。
위료해대패혼응토요축과정중패기암체적압밀효응，이용대강산수전참패기고결관장후장관공적단공성파급찬공전경도상측시성과，대대패요축과정중패기암체압밀효응적영향인소、패기암체압밀적시효성급찬공전경도상특정진행료연구。결과표명，수착요축후도적증가，패기암체표현출명현적압밀효응，암체파속축보제고，렬극적장개도축보감소심지소실；혼응토개중후도화암체초시파속시영향암체속도제고적중요인소。연구결과가위최종적고결관장험수제공의거。
In order to understand the compaction effect of dam foundation rock mass during concrete grouting process, the in-fluential factors on compaction effect, the timeliness of compaction and features of drilling panoramic picture were studied by u-sing testing results of single-hole sound-wave and drilling panoramic picture of long-term observation hole after consolidation grouting. The results show that the dam foundation rock mass has an obvious compaction effect with the increase of the grouting thickness, the rock mass velocity increases gradually and the joint opening decreases or even disappears; the concrete cover thickness and initial rock wave velocity are key influential factors on rock wave velocity increment.