多孔管的压力分布特性试验  

Experiment on the pressure distribution characteristic of porous pipe

作　　者：刘文华[1] 刘焕芳[1] 黄兴国[1] 徐峰[1] 

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832003

出　　处：《水利水电科技进展》2009年第5期13-15,88,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(50369003)

摘　　要：通过室内试验并结合水力学理论分析多孔管沿程压力分布规律,研究了坡度、压力水头、孔距、管长4个参数对沿程压力分布的影响。试验结果表明:多孔管沿程压力随压力水头和孔距的增大而增大,随管长的减小而增大,多孔管沿程压力在平坡、顺坡、逆坡3种情况下分别有不同的变化规律。对推导出的水力学理论公式进行了验证,试验证明该公式在与试验条件类似或基本一致的条件下可用于实际计算。The longitudinal pressure distribution law is analyzed with a combination of laboratory testing and theoretical analysis of hydraulic theory. The effects of slope, pressure head, porous distance and pipe length on the longitudinal pressttre distribution were studied. The results show that the porous pressure increases with the pressure head and the porous distance but decreases with the pipe length, and the tpressure in the first section decreases with the slope but the pressure in the last section increases with the slope. The hydraulic theory formula is verified. The results of the experiment show that the formula can be used in practical production if the actual conditions and the test conditions are similar or identical.

关 键 词：多孔管 压力分布 水头损失 压力水头 

分 类 号：S277.9[农业科学—农业水土工程]