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通过钻孔、地质雷达及电磁波CT等物探技术对东风总干渠的蜘蛛洞渡槽施工中遇到的地质缺陷进行勘察,对成果进行对比分析研究,对地质构造定性,理清地层形成不整合成因,分析不整合地层岩溶发育机理及影响范围,着重研究缺陷分布范围,以及地质缺陷对渡槽结构的不利影响。本文内容体现了在地基缺陷分析方法上的创新,为同行今后对渡槽基础地质缺陷分析提供新的思路。
Geological defects encountered in the construction of the spider-hole aqueducts of the main trunk of the Dongfeng River are surveyed through geophysical techniques such as drilling, geological radar and electromagnetic wave CT. The results are compared and analyzed, the geological structure is characterized, the unconformity causes are formed, Analyze the mechanism and influence range of karst development in unconformity strata, focus on the distribution range of defects and the unfavorable influence of geological defects on aqueduct structure. The content of this article reflects the innovation in foundation defect analysis method and provides new ideas for the future analysis of aqueduct foundation geological defects.