岩溶地区公路隧道施工三维地震波探水技术  

The technology of groundwater detection by 3D seismic waves during highway tunnel construction in karst areas

作　　者：王合春 WANG Hechun(CRCC Chongqing Inrestment GROUP Co.,Ltd.,Chongqing 400700,China;Chongqing Wuzhen Expressuay Co.,Ltd.,Chongqing 405800,China)

机构地区：[1]中铁建重庆投资集团有限公司,重庆400700 [2]重庆巫镇高速公路建设有限公司,重庆405800

出　　处：《南水北调与水利科技（中英文）》2024年第S01期210-216,共7页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金项目(41804145);河北省自然基金重点项目(D2024210002);中铁建重庆投资集团重点项目(ZTCT202008)。

摘　　要：为提高地震波法超前预报技术在岩溶地区隧道施工中探测岩溶及地下水的精准度,在液-固弹性理论的基础上,通过分析含水体反射界面人工地震波反射系数、地震波应力响应及其与地震波属性间的关系,得到与瞬时振幅和瞬时频率相关的地震波应力响应表达方式,进而结合流体力学理论导出地震波属性与地下水流动势能关系,建立地下水赋存程度评价指标。在此基础上,结合隧道施工环境制定三维地震波探测方法、地下水识别方法及等级划分标准,并通过巫镇高速公路隧道工程进行现场试验。结果表明:地下水预报结果与实际揭露情况一致,验证了该技术的有效性和准确性。To improve the accuracy of seismic wave advance prediction technology in detecting karst and groundwater during tunnel construction in karst areas,the induced seismicity wave reflection coefficient,seismic wave stress response and the relationship between them and seismic wave attributes of the water containing reflection interface are analyzed on the basis of two-phase medium theory in this paper and the expression of seismic wave stress response related to instantaneous amplitude and instantaneous phase and frequency is obtained.Based on fluid mechanics theory,the relationship between seismic wave attribute and groundwater flow potential energy is derived and the evaluation index of groundwater occurrence degree is established.On this basis,the 3D seismic wave detection met hod,groundwater identification method and classification standard are formulated are established combined with the tunnel construct ion environment and the field test is carried out through the W uzhen expressway tunnel project.The results show that the groundwater prediction results are consistent with the actual disclosure situation and this method is effective and practical.

关 键 词：岩溶地区 探水 应力响应 地震波 公路隧道 

分 类 号：P319.56[天文地球—固体地球物理学]