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Hammer-blow Exploration of Dam's Earth Blanket
Author(s): 
Pages: 876-879
Year: Issue:  S1
Journal: Geotechnical Investigation & Surveying

Keyword:  锤击法 地震勘探 大坝检测 信号处理;
Abstract: 某水电厂大坝为粘土斜墙堆石坝,其粘土防渗层的状态如裂纹、密实性、一致性等对大坝安全十分重要。本文应用锤击法对该大坝进行了实地测试,测试装备为GeometricsC48型地震勘探主机系统。对测试数据用Matlab软件分别进行了频散分析,衰减系数与能量分析,波速计算分析,有效评价了大坝粘土防渗层的状态。分析结果表明,大坝粘土防渗层第11列和12列之间,30列和31列测点之间存在明显的衰减系数突变带,个别点波速低。
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