【摘要】 目前在坝基检测应用中的物探方法有单孔声波法、跨孔声波法和地震波速法等。实际工作中,地震波速法主要是对坝基整体岩性是否完整及岩溶裂隙的分布做出评价,声波法主要是确定岩溶裂隙等地质缺陷问题的深度分布,单孔声波和跨孔声波结合起来则可以更好的确定整个岩体地质缺陷问题的分布情况。这两种方法若能合理组合,可以相互佐证,提高坝基检测的准确性。通过综合的物探方法在银盘江水电站实施,此方案取得了很好的检测效果,给施工单位提供了有效科学的指导。更多还原

【Abstract】 In the detection of dam foundation,single-hole acoustic method,cross-hole acoustic method,and seismic velocity method are usually used.In the practical work,the seismic velocity method is mainly used to evaluate the integrity of the whole lithology of foundation and the distribution of the karst fissure.Acoustic method can determine the depth distribution of geological defects like karst fissure.Combination of single-hole and cross-hole acoustic method can make it better to determine the distribution of geological defects of the whole rock.The accuracy of dam foundation detection can be improved if these two methods are used jointly.Comprehensive geophysical methods are applied in the Yinpanjiang River hydropower station and good results are achieved.They provide effective and scientific guidance to the construction units.更多还原