基于流量衰减分析的次降水入渗补给系数计算方法
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摘要
次降水入渗补给系数是地下水资源量评价的重要参数,次降水对地下水的入渗补给受气候、地形、地质等多种因素影响。以湖北宜昌香溪河流域雾龙洞地下河系统为例,进行次降水入渗补给系数获取方法的探索。在泉流量衰减规律分析基础上,探索新方法进行次降水入渗补给系数计算,分析其规律特征及影响因素,对计算结果的科学合理性进行验证。研究结果表明:雾龙洞泉流量衰减服从分段指数衰减方程;研究区次降水入渗补给系数受次降水强度及降水前下垫面条件影响。基于泉流量衰减分析计算次降水入渗补给系数方法合理可行,该方法在岩溶水资源评价中有一定的推广应用价值。
Recharge coefficient of precipitation event,which is controlled by climate,topography,geology,etc,is an important parameter in the evaluation of groundwater resources. This paper discussed the calculation methods of the recharge coefficient of precipitation event in the Wulongdong underground river located in the Xiangxi River basin in Yichang of Hubei Province. Based on the spring recession analyses,we found a new way to calculate the recharge coefficient of precipitation event,examined its characteristics and controlling factors,and certificated the scientific rationality of the calculating results. The results demonstrate that the hydrographs of the Wulongdong river can be described into segmented recession curve; precipitation intensity and underlying surface conditions before rain are the main influence factors for recharge coefficient of precipitation event calculation; the calculation method of recharge coefficient of precipitation event is rational and feasible,which has application value in karst water resources evaluation.
Recharge coefficient of precipitation event,which is controlled by climate,topography,geology,etc,is an important parameter in the evaluation of groundwater resources. This paper discussed the calculation methods of the recharge coefficient of precipitation event in the Wulongdong underground river located in the Xiangxi River basin in Yichang of Hubei Province. Based on the spring recession analyses,we found a new way to calculate the recharge coefficient of precipitation event,examined its characteristics and controlling factors,and certificated the scientific rationality of the calculating results. The results demonstrate that the hydrographs of the Wulongdong river can be described into segmented recession curve; precipitation intensity and underlying surface conditions before rain are the main influence factors for recharge coefficient of precipitation event calculation; the calculation method of recharge coefficient of precipitation event is rational and feasible,which has application value in karst water resources evaluation.
引文
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[13]尹德超,罗明明,周宏,等.鄂西岩溶槽谷区地下河系统水资源构成及其结构特征[J],水文地质工程地质,2015,42(3):13-18.[YIN D C,LUO M M,ZHOU H,et al.Water resources composition and structure characteristics of underground river system in karst ridge-trough,Western Hubei Province[J].Hydrogeology&Engineering Geology,2015,42(3):13-18.(in Chinese)]
[14]王增海.水电站发电流量计算方法探讨[J].人民黄河,2012(8):117-119.[WANG Z H.Discussion on the calculation method of water discharge for power generation in hydroelectric station[J].Yellow River,2012(8):117-119.(in Chinese)]
[2]吴继敏,郑建青.次降雨入渗补给系数的模型研究[J].河海大学学报(自然科学版),1999,27(6):7-11.[WU J M,ZHENG J Q.Model estimation of sub-coefficient of recharge by rainfall infiltration[J].Journal of Hohai University(Natural Science Edition),1999,27(6):7-11.(in Chinese)]
[3]王永义,王专翠,胡以高.降雨入渗补给规律分析[J].地下水,1998(2):74-75.[WANG Y Y,WANG Z C,HU Y G.Analysis of analysis of precipitation recharge[J].Groundwater,1998(2):74-75.(in Chinese)]
[4]郭会荣,靳孟贵,齐登红,等.基于地中渗透仪的入渗补给方式分析[J].水文地质工程地质,2007,34(4):107-111.[GUO H R,JIN M G,QI D H,et al.Characterization of groundwater recharge processes based on large lysimeters[J].Hydrogeology&Geology Engineering,2007,34(4):107-111.(in Chinese)]
[5]王树芳.岩溶含水系统降水入渗补给研究进展[J].水文,2014(6):1-8.[WANG S F.Progress in Study on Precipitation Infiltration Recharge of Karstic Groundwater System[J].Hydrology,2014(6):1-8.(in Chinese)]
[6]张志才.降雨入渗补给地下水研究[D].南京:河海大学,2006.[ZHANG Z C.Sutdy of precipitation recharge to groundwater[D].Nanjing:Hohai University,2006.(in Chinese)]
[7]李金柱.降水入渗补给系数综合分析[J].水文地质工程地质,2009,36(2):29-33.[LI J Z.Comprehensive analysis of precipitation infiltration recharge coefficient[J].Hydrogeology&Engineering Geology,2009,36(2):29-33.(in Chinese)].
[8]钱静,王旭升,陈添斐.滞后补给权函数与包气带的关系[J].水文地质工程地质,2013,40(3):1-5.[QIAN J,WANG X S,CHEN T F.The relationship between lagged supply weight function and aeration zone[J].Hydrogeology&Engineering Geology,2013,40(3):1-5.(in Chinese)]
[9]程俊贤.利用岩溶水流量动态法计算降水有效渗入系数[J].水文地质工程地质,1982(5):8-12.[CHENG J X.Utilization of the karst water flow dynamic method to calculate the effective rainfall infiltration coefficient[J].Hydrogeology&Engineering Geology,1982(5):8-12.(in Chinese)]
[10]国家地质总局岩溶地质考察组.赴南斯拉夫岩溶地质考察技术报告[M].1978.[Karst geology study group in China National Administration of Geology.Karst geology investigation technical report from Yugoslavia[M].1978.(in Chinese)]
[11]黄敬熙.流量衰减方程及其应用——以洛塔岩溶盆地为例[J].中国岩溶,1982,1(2):118-126.[HUANG J X.Recession equation and its application—case history of luota karst basin[J].Carsologica Sinica,1982,1(2):118-126.(in Chinese)]
[12]董贵明,束龙仓.地下水流量衰减方程研究进展及展望[J].水文地质工程地质,2014,41(4):45-51.[DONG G M,SHU L C.Research progress and prospects of groundwater flow attenuation equation[J].Hydrogeology&Engineering Geology,2014,41(4):45-51.(in Chinese)]
[13]尹德超,罗明明,周宏,等.鄂西岩溶槽谷区地下河系统水资源构成及其结构特征[J],水文地质工程地质,2015,42(3):13-18.[YIN D C,LUO M M,ZHOU H,et al.Water resources composition and structure characteristics of underground river system in karst ridge-trough,Western Hubei Province[J].Hydrogeology&Engineering Geology,2015,42(3):13-18.(in Chinese)]
[14]王增海.水电站发电流量计算方法探讨[J].人民黄河,2012(8):117-119.[WANG Z H.Discussion on the calculation method of water discharge for power generation in hydroelectric station[J].Yellow River,2012(8):117-119.(in Chinese)]