九寨沟“8·8”地震背景下火花海钙华坝 体无损探测分析  

Study on non-destructive detection technology on travertine dam in sparkling lake under the background of"8·8"earthquake in Jiuzhaigou valley

作　　者：罗尧东[1] 代群威[1,2] 董发勤[1] 王富东[1] 赵学钦[1] 廖传康 崔杰[1] 李琼芳[3] 王安平 LUO Yaodong;DAI Qunwei;DONG Faqin;WANG Fudong;ZHAO Xueqin;LIAO Chuankang;CUI Jie;LI Qiongfang;WANG Anping(School of Environment and Resource,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Fundamental Science on Nuclear Waste and Environmental Safety Laboratory,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;School of Life Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Sichuan Coalfield Geological Bureau,Chengdu,Sichuan 610000,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳621010 [3]西南科技大学生命科学与工程学院,四川绵阳621010 [4]四川省煤田地质局,四川成都610000

出　　处：《中国岩溶》2021年第1期147-156,共10页Carsologica Sinica

基　　金：国家自然科学基金面上项目(41877288,41973053,41572035)。

摘　　要：为研究震后九寨沟钙华景区的溶洞、裂隙、暗流等地质特性,丰富钙华景区岩溶洞穴无损探测技术,探讨了多物探技术在多孔疏松钙华地区作业的可靠性。首次运用地质雷达法及高密度电法相结合的无损探测技术,在九寨沟景区火花海特定区域进行了现场勘查和无损探测试验。结合对比两种无损探测成果与测区内出露地质剖面3组勘探数据,结果发现:高密度电法与地质雷达法相结合,两者能优劣互补,相互佐证,在解决钙华区域浅部溶洞、暗流、裂隙等工作中,对探测目标体具有极高的识别度。两种方法探测数据与震后出露剖面地质特征保持极高的一致性,验证了两种无损检测方法在多孔疏松介质条件下数据的真实可靠性,解决了多物探技术在多孔疏松介质地区施工的疑点和难点,丰富了工程物探领域技术。In order to investigate the geological characteristics of karst,fissures and underground currents in Jiuzhaigou valley travertine scenic spot after the earthquake,enrich the non-destructive detection technology of karst cave in trav⁃ertine scenic area,and discuss the reliability of multi-geophysical exploration technology in porous and loose travertine area,in this paper,the non-desctructive detection technology combining Ground Penetrating Radar(GPR)and high-den⁃sity resistivity method was used to carry out field survey and nondestructive detection test in the specific area of the sparkling lake in Jiuzhaigou valley particularly.Comparing the two kinds of non-destructive detection results with three groups of exploration data of the exposed geological section in the survey area,it was found that the combination of highdensity resistivity method and ground penetrating radar method can complement each other,support each other,and es⁃pecially show a high degree of recognition for the detection target when solving the problems of shallow karst,under⁃ground current and fracture in the travertine area.The non-destructive detection data of the two methods are highly consistent with the geological characteristics of the exposed section after the earthquake,indicating the true reliability of the two non-destructive detection technology data under the condition of porous and loose media,as well as solving the doubts and difficulties of multi-physical exploration technology in the construction of porous and loose media areas,which is of great significance for enriching the field of engineering geophysical exploration technology.

关 键 词：多孔疏松介质 九寨沟 地质雷达法 高密度电法 

分 类 号：P631[天文地球—地质矿产勘探] P642.25[天文地球—地质学]