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由于连年干旱,地下水开采量超过补给量,我县的地下水埋深已由1979年的2.50米降至1984年的7.95米,再加之机井装置存在一些技术问题,使机井出水量减少,能源消耗增大。因此,提高机井装置效率,是当前机井科学管理的主要内容。目前进行的机井测试与改造工作,是提高机井装置效率的有效手段,下面结合实例,谈一下机井装置效率的测试与计算。一、机井装置效率的测试与计算方法
Due to successive years of drought and the exploitation of groundwater exceeding the recharge rate, the groundwater depth in our county has dropped from 2.50 meters in 1979 to 7.95 meters in 1984. In addition, there are some technical problems in the well installation, which reduce the water discharge from the wells and increase the energy consumption Big. Therefore, improving the efficiency of the well unit is the main content of scientific management of the well. The current testing and reconstruction of the well is an effective way to improve the efficiency of the well device. The following is a combination of examples to discuss the testing and calculation of the efficiency of the well device. First, the efficiency of the test and calculation of the installation method