水文监测技术在岩溶隧道施工中的应用

发布时间：2018-05-13 00:34

本文选题：岩溶隧道 + 涌水　；参考：《隧道建设》2017年07期

【摘要】：为探析岩溶隧道开挖过程中隧址区水文地球化学特征、岩溶水补径排条件以及隧道涌水与地表水文环境的相关关系,以华蓥山隧道工程施工为依托,开展动态水文监测和分析。利用水文动态监测体系反馈的水质和水量信息研究隧址区地下水水文地球化学特征、判定隧道开挖后地下水影响范围。结果表明:1)常规水质分析和同位素分析显示隧址区地下水径流条件较好,径流途径较短,并且受大气降水影响密切;2)隧址区地表布设的4个水文监测点均呈现流量、水位减少趋势,证明隧道建设对本区地下水系统造成一定影响,其影响程度不一;3)相关分析表明隧道涌水与龙古井、龙神洞2个地表水点呈强相关性,具有显著性。
[Abstract]:In order to probe into the hydrogeochemical characteristics of the tunnel site during the excavation of karst tunnel, the condition of compensating the diameter and discharge of karst water and the correlation between the water gushing of the tunnel and the surface hydrological environment, dynamic hydrological monitoring and analysis are carried out on the basis of the construction of Huaying Mountain Tunnel project. The hydrogeochemical characteristics of groundwater in tunnel area are studied by using the information of water quality and quantity feedback from hydrologic dynamic monitoring system, and the influence range of groundwater after tunnel excavation is determined. The results show that the conventional water quality analysis and isotopic analysis show that the groundwater runoff conditions are better, the runoff path is shorter, and the surface hydrological monitoring points are all of flow rate in the tunnel area, which are closely affected by the atmospheric precipitation. The decreasing trend of water level proves that the tunnel construction has a certain influence on the groundwater system in this area, and its influence degree is different. The correlation analysis shows that there is a strong correlation between tunnel water gushing and Longshendong and two surface water points in Longshantong, which are significant.
【作者单位】：中煤科工集团重庆研究院有限公司;
【基金】：重庆市交通科学技术项目(2014-01)
【分类号】：U456.3

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