作者根据北京市自来水公司40来年积累的资料,研究了该市的需水量规律和影响因素。发现该市冬季需水量的变化较有规律,夏季的影响因素较多,但主要的是日平均气温,而不是日最高气温。在周期变化中,休假前夕的需水量不但多于平日,而且多于假日。 Based on the data accumulated by the Beijing Water Company in the coming 40 years, the author studied the city’s water demand patterns and influencing factors. It is found that the city’s winter water demand changes more regularly, and there are many factors affecting the summer, but the main one is the daily average temperature, not the daily maximum temperature. In the cycle of changes, the amount of water required on the eve of the holiday is not only more than on weekdays, but also more than holidays.