运用水文时间序列分析识别济南泉域岩溶发育特征  

Hydrodynamic Characteristics of Jinan Karst Spring System Identified by Hydrologic Time-Series Data

作　　者：李严 王家乐[2] 靳孟贵[1] 马河宽 柳浩然 彭涛[4] Li Yan;Wang Jiale;Jin Menggui;Ma Hekuan;Liu Haoran;Peng Tao(School of Environmental Studies,China University of Geosciences,Wuhan 430074,China;Department of Soil and Water Conservation,Changjiang River Scientific Research Institute,Wuhan 430010,China;No.801 Hydrogeology&Engineering Geology Brigade,Shandong Provincial Bureau of Geology and Mineral Resources,Jinan 250014,China;Institute of Heavy Rain,China Meteorological Administration,Wuhan 430205,China)

机构地区：[1]中国地质大学环境学院,湖北武汉430074 [2]长江水利委员会长江科学院水土保持研究所,湖北武汉430010 [3]山东省地矿局八O一水文地质工程地质大队,山东济南250014 [4]中国气象局武汉暴雨研究所,湖北武汉430205

出　　处：《地球科学》2021年第7期2583-2593,共11页Earth Science

基　　金：国家自然科学基金项目(Nos.41807219,41877192);国家重点研发计划项目(No.2017YFC0404504);中央级公益性科研院所基本科研业务费项目(Nos.CKSF2019170/TB,CKSF2019410/TB)。

摘　　要：岩溶含水层具有高度的非均质性和各向异性,为定量识别济南泉域岩溶含水层发育状况,通过选取泉域岩溶水补给区和排泄区的地下水位动态数据,采用相关分析和频谱分析,研究其对降雨补给的响应特征.地下水位-降雨量的自相关和互相关分析表明,系统对降雨输入信号的敏感程度自补给区至排泄区逐渐降低,但记忆作用逐渐增强.相位分析结果表明泉域地下水位对降雨信号的响应存在滞后现象,自补给区至排泄区滞后时间逐渐延长,补给区地下水位与降雨具有更好的线性相关性.交叉振幅分析结果表明补给区地下水流中快速流约占20%~30%,而在排泄区快速流占比减少至2.5%~10.0%.岩溶含水系统地下水动力条件主要受岩溶发育程度等介质内部结构影响,济南泉域岩溶含水层岩溶发育程度较低,含水介质和水流通道以岩溶裂隙为主,地下水运动以基质流为主.Karst aquifers are characterized by highheterogeneity and spatial variability of their media. Time-series analysis of precipitation and waterlevel(as input and output functions), including correlation, spectrum analysis, were applied to the Jinan karst spring system in Shandong Province, in order to study the hydrodynamic behavior and hydraulic properties of the aquifer system. Autocorrelation and cross-correlation analysis showed that the sensitivity of the system to precipitation input signal decreased gradually from the recharge area to the discharge area, but the memory effect increased gradually. Phase analysis results show that the response of water level to precipitation signal in Jinan spring area lags behind. The lag time from recharge area to discharge area gradually prolongs, and the recharge area has better linear correlation. The results show that the quick flow accounts for about 20%-30% of the subsurface flow in the recharge zone, and the ratio is reduced to 2.5%-10.0% in the discharge zone.The fluctuation of water level in karst system is mainly affected by the internal structure of karstic medium. The karstification degree of the aquifer in Jinan is fairly low, and groundwater movement is dominated by matrix flow.

关 键 词：岩溶含水系统 时间序列分析 岩溶发育状况 济南 地下水 

分 类 号：P641.134[天文地球—地质矿产勘探]