第41卷第9期2023年9月文章编号：1009-7767(2023)09-0263-06市放技术JournalofMunicipalTechnologyVol.41,No.9Sep.2023D0I:10.19922/j.1009-7767.2023.09.263广花盆地岩溶强发育地区工程桩基钻芯法检测异常原因分析及改进措施罗云烈*，鲁传恒，陶华飞，李鹏（广州市市政工程设计研究总院有限公司，广东广州510000)摘要：以广花盆地某岩溶区工程为例，分析了场地岩溶发育的基本规律，指出当场地大溶洞和多层溶洞十分发育时，勘察仅依靠简单的钻探手段很难给设计提供准确的岩溶分布信息，从而导致后续钻芯法检测结果出现异常。因此，建议面对类似岩溶强发育场地时，勘察应多结合使用物探手段以扩大探测范围；设计人员应将补充勘察的重点探测范围扩大到不小于10m；检测前应先结合勘察数据进行分析，然后再优先选取风险较高的桩基进行检测，且宜适当提高钻芯法检测比例。关键词：广花盆地；岩溶强发育；钻芯法；桩基检测中图分类号：P642.25；TU473.1CauseandImprovementofAbnormalDetectionbyEngineeringPileFoundationCoreDrillingMethodinKarstStrongDevelopmentAreaofGuanghuaBasin(GuangzhouMunicipalEngineeringDesign&ResearchInstitute,Guangzhou510000,China)Abstract:TakingakarstareaprojectinGuanghuaBasinasanexample,thebasiclawofkarstdevelopmentinthesiteisanalyzed.Whenthelargekarstcaveandmulti-layerkarstcavearewelldeveloped,itisdifficulttoprovideaccuratekarstdistributioninformationforthedesignonlybysimpledrillingmethod,whichcausesabnormalresultsofsubsequentcoredrillingmethod.Itissuggestedthatthesurveyshouldbeconductedbycombinationwithgeo-physicalmethodstoexpandthedetectionrangeunderthesimilarkarststrongdevelopmentsites;Thekeydetectionrangeofsupplementarysurveyshouldbeexpandedtonolessthan10mbythedesigner;Firstly,thesurveydatashouldbeanalyzedbeforetesting.Then,thepilefoundationwithhigherriskshouldbepriorityselectedfortesting.Theproportionofcoredrillingmethodshouldbeappropriatelyincreased.Keywords:GuanghuaBasin;karststrongdevelopment;coredrllingmethod;pilefoundationdetection文献标志码：BLuoYunlie*,LuChuanheng,TaoHuafei,LiPeng广花盆地位于广州市西北部，地跨白云区西部和花都区绝大部分，地质构造上划分为华南褶皱系地粤中凹陷区，盆地内可溶岩分布十分广泛，岩溶...
