暴雨径流与水库异重流相关性分析  

Correlation analysis of storm runoff and density current in reservoir

作　　者：刘日锋 李扬[2] 马卫星[2] 周子振[2] Liu Rifeng Li Yang Ma Weixing Zhou Zizhen(Xi＇ an Water Group Company Ltd, Xi＇ an 710061, China School of Environmental and Municipal Engineering, Xi＇an University of Architecture and Technology, Xi＇an 710055, China)

机构地区：[1]西安水务(集团)有限责任公司,陕西西安710061 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《供水技术》2017年第5期24-29,共6页Water Technology

摘　　要：建立了不同季节入库径流量-含沙量-水温-入流密度关系,确定了不同季节、不同入流强度下潜流位置及基本变化规律。得出近9年入库流量Q和入库含沙量S的拟合关系为:S=0.4655e^(0.0024Q)(R^2=0.711 4);上游水文监测断面入库含沙量S和主库区控制断面含沙量S主峰值的拟合关系为:S_主=0.034e^(0.233S)(R^2=0.768)。对近9年不同季节、不同入库流量条件下入流水温进行汇总,由入流水温和主库区控制断面含沙量可以估算入流密度,根据典型月温度-密度分布可推算出潜流位置,潜流位置计算值与实测结果吻合良好。汛期取水应避开高浊潜流水层并充分利用潜流位置在高程545 m附近的潜流泄洪,实现优水优供、排浊蓄清。In this paper,relationships between inflow quantity,water suspend solid contents,water temperature and density of the inflow were established,and the location and basic changing rule of undercurrent in different seasons and under inflow intensities were determined. The fitting equation of relationship between inflow Q and inflow suspend solid content S in recent 9 years was S = 0. 4655 e^（0. 0024 Q）（ R^2= 0. 711 4）,and the equation was S_（main）= 0. 034 e^（0. 233 S）（ R^2= 0. 768） for inflow sediment content S at upstream hydrological monitoring section and the S_主 at the control section of main reservoir. Based on summarizing inflow temperature under the conditions of different seasons and inflow intensities in the past 9 years,inflow density could be estimated with water temperature and suspend solids content of control section of main reservoir. According to the relationship of typical monthly temperature and density distribution,position of undercurrent could be calculated,which agreed well with the measured value.Water intake in flood season should avoid high turbidity groundwater layer and make full use of flood discharge of undercurrent water near the height of 545 m,so as to achieve supply of good quality raw water,to avoid high turbidity and to store clear water.

关 键 词：水源水库 暴雨径流 含沙量 水温 异重流 

分 类 号：TV697.11[水利工程—水利水电工程]