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前言我国北方现有配套机井约241万眼,用地下水浇灌的耕地面积达1133.3万公顷,可见井灌对我国农业生产的发展起着重要作用。与此同时也应看到有不少井灌区和井渠结合灌区,由于机井过密、配泵不合理以及过量开采地下水,形成区域性的降落漏斗,导致机井报废或一再更换机泵,因而造成相当严重的经济损失。因此,开展地表水与地下水联合运用条件下的最佳布井配泵研究,具有广泛的实用意义和重大的经济价值。本文在以往研究的基础上,结合我们在聊城地区的工作,建立起计算模型。希望能引起对该课题研究的重视和兴趣,为最终找到一种较为完善的计算方法。
Foreword In the northern part of our country, there are about 2.41 million supporting wells and the area of arable land irrigated with groundwater is 11.333 million hectares. It can be seen that well irrigation plays an important role in the development of agricultural production in our country. At the same time, we should also see that many well-irrigated areas and well-well combined irrigated areas have resulted in the formation of regional descending funnels due to over-confined wells, unreasonable pumping and over-exploitation of groundwater, resulting in shaft scrapping or replacement of the pump repeatedly Very serious economic loss. Therefore, it is of wide practical significance and significant economic value to carry out the research of the best well distribution pump with the combined application of surface water and groundwater. Based on the previous research, this paper establishes a calculation model based on our work in Liaocheng. Hoping to arouse the attention and interest in the research of this subject, finally finding a more perfect calculation method.