凉水河水环境治理生物填料对河道阻力的影响  

Effects of biogenic packing on flow resistance in the water environment treatment project of Liangshuihe River

作　　者：杨淑慧[1] 王理许[1] 张春义[1] 王远航[1] 

机构地区：[1]北京市水利科学研究所,100044

出　　处：《北京水务》2007年第6期17-21,共5页Beijing Water

摘　　要：结合北京市凉水河水环境治理工程,利用水槽试验,研究河道布设生物填料后,其阻力特性的变化规律。分析了水槽中布设单排、双排生物填料,在不同生物填料高度、流量等运行条件下,水槽综合糙率系数的变化规律;定量提出生物填料相对高度与综合糙率系数的相关关系。并根据凉水河河道水力参数及布设的生物填料数量、高度等参数,提出凉水河布设生物填料后的综合糙率系数值,为论证凉水河水环境治理工程是否影响河道行洪安全提供技术依据。The flow resistance of Liangshuihe River in Beijing with installation of biogenic packing is investigated, through flume test in laboratory. The variation of Manning＇s roughness coefficient is analyzed under different discharge and height of the biogenic packing for the circumstances of one and two rows of biogenic packing installed. Based on the experimental results, a linear relationship between Manning＇s roughness coefficient and the height of biogenic packing is obtained. According to the relationship, the roughness coefficient of Liangshuihe River is reasonably determined after installation of biogenic packing.

关 键 词：生物填料 河道阻力 糙率 水槽试验 

分 类 号：TV133[水利工程—水力学及河流动力学]