摘要
小流量测验是库姆塔格沙漠资源环境本底调查的重要内容。根据库姆塔格沙漠及周边河流泉水野外水文调查(2007-2009),对9条河流泉水16处断面进行了流量测验,分析小流量测验方法及其误差。调查研究表明:(1)库姆塔格沙漠及其周边溪流和泉水枯季径流小,多数河流不适宜用流速仪法实测流量;(2)用V形薄壁堰进行流量测验,其随机不确定度为0.86%,满足水文测验规范要求;小浮标法实测拉配泉流量为(6.086±0.460)m3/h,其中标准不确定度0.460 m3/h,相对标准不确定度为7.56%,小于测验规范允许值。(3)V形薄壁堰和小浮标法施测方便,有一定测流精度,是干旱区野外水文调查的适宜方法。
Low flow measurement plays a great role in background investigation in the Kumtag Desert environmental resources.The dry season flow in these smaller rivers is not only the main water resource for wildlife,but also for the focus area of plants distribution.In order to test the reliability and accuracy of a suitable discharge measuring strategy for those streams,experimental investigations have been carried out on the small river in and nearby Kumtag Desert.The flow measurements were conducted on 16 sections...
出处
《干旱区地理》
CSCD
北大核心
2011年第1期20-25,共6页
Arid Land Geography
基金
国家科技基础性工作专项"库姆塔格沙漠综合科学考察"(2006FY110800)
国家"十一五"科技支撑计划课题(2006BAD26B10)
中国林科院林业研究所重点项目(ZD200907)
关键词
小流量测验
误差
库姆塔格沙漠
V形薄壁堰
小浮标法
low flow measurement
measurement error
Kumtag Desert
triangle weir box
small buoy method
