基于直流电阻率法探测隧道上覆地层赋水性Tunnel Overlying Strata Water-bearing Property Prospecting Based on Galvanic Resistivity Method
沈哲,杨振威,李宏伟
摘要(Abstract):
浅层地下水可导致黄土覆盖区隧道淋水、变形,带来严重的安全隐患,为查明黄土覆盖区隧道上覆地层赋水性特征和导水通道,为后期水害治理和隧道维护提供重要依据。在研究区复杂探测环境下布置了4条直流电法勘探线,经过数据处理,将视电阻率拟断面图直接用于地质解释,发现电性剖面高电阻率区域与隧道位置吻合较反演断面图好;结合地质资料,查明了黄土地层富水区域,并指出了可疑导水通道。研究表明,视电阻率拟断面图可准确的进行地质解释,常规电阻率法勘探在探查黄土区隧道地层赋水性方面可以发挥重要的作用。
关键词(KeyWords): 黄土区;直流电法;隧道;赋水性
基金项目(Foundation): 国家自然科学基金(41202084);; 河南省教育厅重点基金项目(15A170008)
作者(Author): 沈哲,杨振威,李宏伟
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