地下岩土结构精细探测技术在某输电隧道勘察中的应用  

Application of Detailed Detection Technology for Underground Geotechnical Structure in Investigation of a Power Transmission Tunnel

作　　者：丁文义 胡红敏 王磊 Ding Wenyi;Hu Hongmin;Wang Lei(Sinohydro Bureau 14 Co.,Ltd.)

机构地区：[1]中国水利水电第十四工程局有限公司,昆明市650041

出　　处：《勘察科学技术》2024年第3期54-58,共5页Site Investigation Science and Technology

摘　　要：该文提出探地雷达+微芯探测+钻孔全景成像的数字化地下岩土结构探测方法,实现对地下岩土体结构从定性到定量的多层次、多维度探测。利用探地雷达探测区域地层结构分布状态,划定地层结构危险区;然后采用微芯智能探测装置,对划定的危险区进行抽样钻孔探测,获得地层密实度结果和地层结构精细形貌;再采用全景成像装置,对钻测的孔内进行全景成像探查,准确获得地层结构细观孔隙和松动破碎区分布,进而识别地层界面和划分土体分层。该方法在某输电隧道勘察中的应用收到了较好效果。该研究结果为城市地下岩土工程准确探测提供了有力支撑。This paper proposes a digital underground rock and soil structure detection method that combines ground penetrating radar,micro core detection,and borehole panoramic imaging,achieving multilevel and multi-dimensional detection of underground rock and soil structures from qualitative to quantitative.First,Ground penetrating radar is used to detect the distribution status of geological structure in the area and delineate the danger zone of geological structure.Then,a micro-core intelligent detection device is used to conduct sample bolehole surveys within the designated hazardous areas,obtaining the results of stratum density and fine morphology of stratum structure.At last a panoramic imaging device is used to conduct panoramic imaging exploration of the drilled holes,accurately obtaining the distribution of micro pores and loose and fractured areas in the geological structure,and identifying the geological interface and dividing the soil layers.Application of this method in the survey of a certain transmission tunnel has achieved good results.The research results provide strong support for accurate detection of urban underground geotechnical engineering.

关 键 词：探地雷达 微芯探测 全景成像 岩土结构精细探测 

分 类 号：TM75[电气工程—电力系统及自动化] TU195[建筑科学—建筑理论]