基于三维荧光光谱和水质特征因子检测技术的排水管网地下水入渗分析研究

Groundwater infiltration analysis of urban drainage networks based on 3D-EEM technology and marker species technology

针对目前常规管道检测技术在地下水入渗探查过程中存在的问题,将三维荧光光谱检测技术和水质特征因子检测技术相结合,选取上海某大型污水干线,进行了地下水入渗情况的定性、定量分析,并对两种方法进行对比。结果表明三维荧光光谱技术能够快速、高效地定性判断地下水入渗情况,水质特征因子检测技术能够定量解析来水成分及其比例,进而聚焦重点区域。在此基础上,结合常规物探调查方法,获取导致来水变化异常的原因,对解析结果进行验证。在实际应用中,对于较大范围内的来水溯源和排查,具有较好的实用性,可将两种技术与常规管道检测技术结合,以充分发挥各自优势。

At present,there are some problems in the process of groundwater infiltration exploration with conventional pipeline detection technology.Aiming at these problems,this study combined the three dimensional excitation-emission matrix fluorescence spectra technology(3DEEM)with the marker species technology.A large sewage main line of Shanghai was selected as the research area*and the groundwater in filtration was analyzed qualitatively and quantitatively.These two methods were compared and verified.The results show that 3D-EEM can determine the groundwater infiltration rapidly and efficiently.The marker species technology can quantitatively analyze the composition and proportion of incoming water.The key areas were focused on.On this basis,combined with the conventional geophysical survey method,the reasons leading to the abnormal water change were obtained.The analytical results can also be verified.In practical application,these methods have good practicability for the tracing and investigation of incoming water in a large range.These two technologies can be combined with the conventional pipeline detection technology to make full use of the advantages of different methods.