摘要
根据室内模拟试验,研究了水流流经L形裂隙时水头损失随裂隙宽度、裂隙中水流流速变化的规律。研究结果表明:水流流经L形裂隙的水头损失随隙宽的增大而增大,与水流流速之间呈二次函数关系;综合分析不同隙宽条件下L形裂隙水头损失与流速之间的二次函数关系,显示此函数关系的二次项系数与隙宽之间呈线性关系,一次项系数与隙宽之间呈二次方关系,最终得到L形裂隙水头损失与隙宽及流速之间的经验公式。
Laboratory simulation was conducted to study the water flow in L-shaped fractures with different aperture widths and flow velocities. The results show that the water head loss of L-shaped fractures increased with the increase of the aperture width, and the water head loss can be approximated by a quadratic function of the flow velocity. There was a linear relationship between the quadratic coefficient and the aperture width and a quadratic relationship between the monomial coefficient and the aperture width. Finally, an empirical function of the water head loss, the flow velocity, and the aperture width was obtained.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第5期383-388,共6页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金(41172203)
关键词
L形裂隙
裂隙宽度
水头损失
流速
室内模拟试验
L-shaped fracture
aperture width
water head loss
flow velocity
laboratory simulation
作者简介
束龙仓（1964-），男，安徽无为人，教授，博士，主要从事地下水资源评价与管理、地下水与生态环境研究。E-mail：lcshu@hhu．edu．cn
