引汉济渭工程黄三隧洞地下水渗流同位素综合示踪探测分析研究

发布时间：2018-06-24 11:49

本文选题：引汉济渭工程 + 黄三隧洞　；参考：《水利水电技术》2017年08期

【摘要】：引汉济渭工程黄三段深埋长输水隧洞岩性复杂多变,水文地质条件极其复杂。为深入分析黄三段水文地质条件,采用地下水同位素综合示踪探测手段,对黄三隧洞沿线钻孔、大坪隧道、良心河、沙坪河等区域进行现场测试及取样室内分析。通过对温度、电导、水化学及环境同位素、地下水流速等方面的综合分析,结合水文地质测绘、试验等基础性工作,对地下水补给、径流、排泄条件,水力联系及连通性等方面进行了评价。研究结果表明:黄三隧洞南部和中部存在富水带,地下水主要受大气降水补给;围岩可划分为中等富水区、弱富水区、贫水区,分别占隧洞全长的7.9%、15.4%、76.7%;实际揭露涌水量与原设计预测情况一致,验证了同位素综合示踪探测方法的有效性。研究成果对同类工程具有一定的工程实际应用参考价值。
[Abstract]:The lithology and hydrogeological conditions of the deep buried long water conveyance tunnel in the third section of Huanghuangji Wei Project are very complicated. In order to deeply analyze the hydrogeological conditions of the third member of the Yellow River, the site test and sampling laboratory analysis were carried out in the areas of drilling hole, Daping tunnel, conscience River and Shaping River along the Yellow River third Tunnel by using the comprehensive tracer detection method of groundwater isotope. Through the comprehensive analysis of temperature, electrical conductivity, hydrochemistry and environmental isotopes, and groundwater velocity, combined with basic work such as hydrogeological mapping and testing, the conditions of groundwater recharge, runoff and discharge are studied. Hydraulic connection and connectivity were evaluated. The results show that there are water-rich zones in the south and middle of the Yellow River third Tunnel, the groundwater is mainly recharged by atmospheric precipitation, and the surrounding rock can be divided into middle water-rich areas, weak water-rich areas and water-poor areas. Respectively, 7.9% of the total length of the tunnel is 7.9% and 15.4% of the total length of the tunnel, respectively. The actual disclosure of water discharge is consistent with the original design prediction, which verifies the effectiveness of the comprehensive isotope tracer detection method. The research results have certain reference value for similar projects.
【作者单位】：陕西省引汉济渭工程建设有限公司;黄河勘测规划设计有限公司;
【基金】：国家重点研发计划课题(2016YFC0401801)
【分类号】：P641.7;TV68

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