管波探测法在桩底岩溶勘察及桩身质量检测中的应用

桩端持力层的岩溶分布情况勘察和水下混凝土灌注桩桩身缺陷检测,往往是基础工程建设过程中的重点和难点。管波探测方法是根据波动原理,利用“管波”来探明钻孔旁一定范围内岩溶、软弱夹层等不良地质体的一种新兴物探方法。本文通过列举工程实例,论述了管波探测法在岩溶区桩端持力层完整性探测及混凝土灌注桩桩身质量检测中的应用,取得了较好的效果,值得进行进一步的推广。

The Application of Tube Wave Detection Method in Pile Bottom Karst Exploration and Pile Body Quality Detection

The detection of karst distribution of the pile end bearing layer and the detection of the defect of underwater concrete pouring pile are often considered the key and difficult points in the process of engineering construction.Based on wave principle,tube wave detecting method as a new geophysical prospecting methoduses′tube wave′to detect karst,weak intercalation and other unfavorable geological bodies in a certain range beside the borehole.By citing the engineering examples,this paper discusses the application of tube wave detection method in the detection of pile end bearing layer integrity and the quality detection of concrete cast-in-place pile body in karst area,and achieves good results,which is worthy of further promotion.