A comprehensive crosshole tomography method for karst identification based on color fusion technology
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摘要: 单一跨孔层析成像技术具有多解性, 很难准确地识别岩溶异常。为此, 本文引入颜色融合技术, 通过数值模拟, 测试了弹性波走时CT、弹性波衰减CT和电磁波衰减CT这3种跨孔CT反演信息颜色融合的有效性, 并开展了综合跨孔CT岩溶探测现场试验。试验结果表明, 颜色融合技术能够有效地提高岩溶判识的准确度。研究成果为油气管道和桥梁隧道等基础工程岩溶勘查提供了一种有效的综合跨孔探测和解释新方法, 对提高岩溶勘查精度具有重要意义。Abstract: Single crosshole tomography features a multiplicity of solutions, rendering it challenging to accurately identify karst anomalies. Given this, this study introduced color fusion technology and tested its effectiveness in the inversion of three types of crosshole seismic CT data using numerical simulations: elastic wave travel time CT, elastic wave attenuation CT, and electromagnetic wave attenuation CT. A field experiment on karst identification using comprehensive crosshole CT data reveals that the color fusion technology can effectively enhance the accuracy of karst identification. The results of this study provide an effective method for comprehensive crosshole detection and interpretation for karst exploration in foundational projects such as oil and gas pipelines, bridges, and tunnels, holding great significance for improving the exploration accuracy of karst.
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