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万亩地下水开发试区位于茌平县城西,土质为亚粘土,引黄条件优越,有很多地块引黄时能够自流灌溉。区内历年平均降雨量为597mm,降雨入渗系数为0.20～0.25,补源条件好,因此,浅层地下水埋藏丰富。淡水底界面埋深50～80m,淡水砂层累计厚度15～25m,易成井,且单井涌水量大,降深6m时,单井涌水量平均400～60m~3/h。在灌溉用水方面,群众重黄轻井,优先利用黄河水,产生了以下不良影响:一是试区内的地下水主要排除方式为潜水蒸发和侧向径流,每年约132万m~3的降雨和64万m~3的地表水入渗水量白白浪费掉。二是群众争引黄河水,使边远高
The 10,000-mu underground water development trial area is located in Chengping County West City, where the soil is sub-clay with excellent conditions in the Yellow River diversion area. The average annual rainfall in the area is 597mm, and the rainfall infiltration coefficient is 0.20 ~ 0.25, so the recharge conditions are good. Therefore, the shallow groundwater is rich in burial. The freshwater bottom interface has a depth of 50 ~ 80m and the freshwater sand layer has a total thickness of 15 ~ 25m. It is easy to go into the well, and the single well has a large amount of water inflow. When the depth is 6m, the average water inflow of a single well is 400 ~ 60m ~ 3 / h. In the aspect of irrigation water, the masses have heavy yellow wells and give priority to the use of the Yellow River water, resulting in the following adverse effects: First, groundwater in the pilot area is mainly subjected to subduction and lateral runoff and rainfall of about 1.32 million m 3 per year 640,000 m 3 surface water infiltration wasted. Second, the masses fight the Yellow River so far