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 论文推荐 |
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资料来源：重庆大学三峡库区生态环境教育部重点实验室 |
| 摘
要：根据10个区域典型小城镇群1998～2004年用水量的实地调查,采用＂二次平均法＂统计得出不同规模小城镇人均综合用水量水平.统计结果表明：小城镇年用水量变化具有明显的趋势性和随机性,周期性不明显;日、月用水量变化具有平稳性、交变性和周期性,但日用水量变化的周期性没有月用水量突出;时用水量变化周期性明显,一天当中出现早、中、晚3个用水高峰,其他时段变化不明显;各类小城镇用水日变化系数较大,取值范围1.75～1.95,城镇规模越小或生产用水比例低时取高值;各类小城镇日用水过程中最高峰值与最低峰值之间的振幅随城镇规模减小而增大,且日用水量Qd＜1万m3时,时变化系数Kh为2.2～2.7,建议参考计算式Kh=-0.1341
ln（Qd）＋3.442
2. |
| Abstract：Based on
the actual investigation data of water consumption during 1998～2004 of
typical towns in 10 regions, Quadratic Average Method is applied to calculate
the average water consumption level at different scales. It can be concluded
that the variation of annual water use has evident tendency and randomness
without periodicity; the variation of daily or monthly water use is stable,
exchanged and periodic; monthly water use variation periodicity is more clearly
than that of daily ones. Besides, hourly water use changes periodically, peak
appears at three periods of time, i.e. morning, noon and evening. The result
also shows that the coefficient of daily variation is high, ranging in
1.75～1.95. The
smaller the town and the lower the proportion of production water use, the
higher the coefficient. The amplitude between the highest and lowest values of
daily water use increases with the decrease of town scale, and for the daily
water use less than 10,000 m^3, the coefficient of variation by hours Kh
is approximately 2. 2～2. 7, and
the forrnula Kh =-0. 1341 ln（Qd）＋ 3. 442 2
is suggested for the calculation. |
| 关键字：小城镇 用水量 变化规律 变化系数 |
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