管波探测技术在大直径嵌岩桩岩溶勘察中的应用  

Application of tube wave detection technology in karst exploration of large diameter rock-socketed piles

作　　者：张志刚 王学伟 张友林 宫亮 Zhang Zhigang;Wang Xuewei;Zhang Youlin;Gong Liang(Shandong Geological and Mineral Engineering Survey Institute,Jinan 250014,China;China Highway Engineering Consultants Corporation,Beijing 100089,China)

机构地区：[1]山东省水工环地质工程有限公司,济南250014 [2]中国公路工程咨询集团有限公司,北京100089

出　　处：《工程勘察》2023年第9期73-78,共6页Geotechnical Investigation & Surveying

摘　　要：在岩溶发育场地大直径嵌岩桩桩基施工过程中,嵌岩桩入岩位置的岩溶发育情况具有很大的不确定性,进而影响大直径桩成桩质量,而桩基础的质量极大地影响着构筑物的质量及使用安全,因此,如何查明大直径桩桩底范围内岩溶发育特征为本次桩基施工的重难点。本文介绍了利用物探管波探测技术在黄河某公铁桥岩溶勘察中的应用实例,查明了大直径桩桩径范围内的溶洞、溶蚀裂隙和软弱层等地质情况。In the construction of large-diameter rock-socketed pile in karst area,the karst development of rock-socketed pile into rock position is very uncertain,and the quality of pile foundation is affected,so as to affect the safety of structures seriously.How to find out the karst development characteristics in the large diameter pile bottom is the important and difficult point in the pile construction.An application example of geophysical tube wave detection technique in karst exploration project of a highway and railway bridge over the Yellow River is introduced in this paper.The geological conditions,such as karst cave,karst fissure and soft layer in the range of piling are all detected.

关 键 词：岩溶 桩基勘察 管波探测 黄河公铁桥 

分 类 号：P631.4[天文地球—地质矿产勘探]