基于光纤微动的泉水敏感区不良地质探查方法研究

Research on the Method of Unfavorable Geology Exploration in Spring Sensitive Area Based on Fiber Optic Micromotion

传统的城市地表探测方法存在观测空间不足、数据串扰和信号提取困难等问题,寻找新的探测方法至关重要。光纤微动探测技术具有较强的抗干扰能力、较高的场地适应性、高效的数据采集以及对周围环境影响小等特点,非常适合在城市环境中使用。本研究以济南市某盾构区间为案例,运用光纤微动探测技术采集数据并反演成像,成功查明了盾构区间的不良地质状况,揭示了岩石破碎情况及软弱分界面分布情况,实现了城市随机噪声的“变噪为源”与科学利用。

Traditional urban surface detection methods suffer from limited observation space,data interference,and signal extraction difficulties,necessitating the search for new detection methods.Fiber optic microseismic detection technology offers strong anti-interference capability,high site adaptability,efficient data collection,and minimal impact on the surrounding environment,making it ideal for urban settings.This study,using a shield tunnel section in Jinan as a case,applied fiber optic microseismic detection technology to collect data and perform inversion imaging.It successfully identified unfavorable geological conditions in the shield tunnel section,detected rock fragmentation,and delineated the distribution of weak interfaces,thus realizing the“turning noise into source”and scientific utilization of urban random noise.