通过GPS实测推求给水管网水力模型关键参数  

Acquisition of Key Parameters of Hydraulic Model for Water Distribution Network Using GPS Survey

作　　者：王俊良[1] 李鹏[2] 高金良[2] 袁一星[2] 汤维佳[2] 

机构地区：[1]大连市投资审核中心,辽宁大连116021 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2011年第9期54-57,共4页China Water & Wastewater

基　　金：国家科技支撑计划项目(2006BAJ08B03);哈尔滨市科技创新人才研究专项(2008RFQXS048)

摘　　要：为提高给水管网水力模型的精确性和可信度,减少管网建模初期基础资料收集的工作量,在给水管网建模过程中引入GPS实测。以东北某特大城市为例,通过全站仪结合GPS的方法,采用GPS-RTK模式,对水源节点及压力监测点进行高精度的三维测量,并且获取管道阻力和阀门阻力实测中压力表和阀门的标高,其精度远高于传统估算方法的。GPS可做到区域内多点同时同步测量,简化了大范围内管线测量的诸多工作程序,极大地提高了工作效率;同时还提高了数字化管网图形精度,在全微机操作条件下避免了人为误差,确保了模型精度,是管网数字化的一种全新作业方式。The application of GPS survey techniques is to enhance the accuracy and reliability in modeling water distribution network, as well as reducing amount of work during the primary stage. Taking a large city in northeast China for example, combined with the total station instrument under GPS-RTK mode, water source nodes and pressure monitoring points were measured precisely and three-dimensionally. The elevations of valves and pressure gauges in the measurement of pipeline resistance and valve re- sistance were also acquired. The results are more precise than those measured with traditional estimating methods. Different points in the area can be measured synchronously, which simplifies many procedures during measurement of pipelines and improves the working efficiency. Digital network graphics is more precise, which can prevent human errors and ensure the accuracy of the model. So it is proved to be a new work mode in modeling water distribution network.

关 键 词：给水管网水力模型 GPS—RTK模式 管道阻力系数 阀门阻力系数 

分 类 号：TU991.33[建筑科学—市政工程]