跨孔地震CT层析成像在岩溶物探中的应用  

Application of cross-hole seismic CT tomography in karst geophysical exploration

作　　者：梁成龙 龚子龙 梁一鸣 张莉 戴蕾滟 高鑫怡 Liang Chenglong;Gong Zilong;Liang Yiming;Zhang Li;Dai Leiyan;Gao Xinyi(Wenzhou University of Technology Wenzhou Key Laboratory of Intelligent Lifeline Protection and Emergency Technology for Resilient City,Wenzhou Zhejiang 325000,China;Shenzhen Institute of Survey and Mapping Co.,Ltd.,Shenzhen Guangdong 518000,China)

机构地区：[1]温州理工学院韧性城市生命线工程智慧防护应急技术重点实验室,浙江温州325000 [2]深圳市勘察测绘院(集团)有限公司,广东深圳518000

出　　处：《山西建筑》2025年第4期82-87,99,共7页Shanxi Architecture

基　　金：国家自然科学基金(项目编号:52268057);温州市基础科研项目(项目编号:S20220003);温州理工学院校级基金(项目编号:ky202212)。

摘　　要：用跨孔地震CT层析成像技术对建筑场地的地层进行高精度的探测,获取勘察场地测试孔间的地层信息和不良地质体分布情况,从而实现对建筑场地全尺寸的地质预报。通过引入尺寸误差和区位误差参数,结合软件反演成像进一步分析,评价跨孔地震CT层析成像技术对于建筑场地地层探测效果、尺寸探测效果。结合钻孔勘察结果,将跨孔地震CT层析成像分析结果绘制成综合地质解释剖面图,可得到场地全尺寸范围内的地层情况。针对不同的探测目标,地震波的探测精度主要受探测目标体与周围环境之间地震波传播速度差异的影响决定。结果表明,将跨孔地震CT层析成像应用在岩溶物探中是可行的,结合地层信息可较清晰地了解地质情况,有利于后期的设计和施工。The cross-hole seismic CT tomography technology is used to detect the strata of the building site with high precision,obtain the formation information between the test holes of the investigation site and the distribution of bad geological bodies,so as to achieve the purpose of full-size geological prediction of the building site.Through the introduction of dimension error and location error parameters,combined with software inversion imaging further analysis,the effect of cross-hole seismic CT tomography on the formation detection and dimension detection of building sites is evaluated.Combined with the drilling survey results,the cross-hole seismic CT tomography analysis results are drawn into a comprehensive geological interpretation profile,which can obtain the full size of the site stratum.For different detection targets,the detection accuracy of seismic wave is mainly affected by the difference of seismic wave propagation velocity between the detection target and the surrounding environment.Finally,according to the results and conclusions of the analysis,it can be seen that the application of cross-hole seismic CT tomography in karst geophysical exploration is feasible,and the geological conditions can be clearly understood in combination with the formation information,which is conducive to the later design and construction.

关 键 词：跨孔地震波 CT层析成像方法 勘察 岩溶 

分 类 号：TU195[建筑科学—建筑理论]