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山区井灌,在发展山区农业生产中起了很大作用,是改变山区贫困面貌的重要设施,同时解决了人畜饮水问题。可是在深井建设中,打井配套投资大,而且成井很不容易,打配一眼岩心井一般要投资两万元左右。据调查,在岩心井中有三分之二的井存在井孔弯斜这种情况。这样的井,下泵安装困难。安装后因传动轴被扭曲与断裂,购买一根泵轴要七十多元,群众反映说,“买得起泵,修不起泵”就是这种原因。一般按机井
Well-well irrigation in mountainous areas plays a great role in the development of agricultural production in mountainous areas. It is an important facility for changing the landscape of poverty in mountainous areas and also solves the problem of drinking water for people and livestock. However, in the construction of deep wells, drilling well supporting large investment, and well is not easy, with a core well generally invest about 20000 yuan. According to the survey, two-thirds of the wells in the core well bore a wellbore. Such wells, under the pump installation difficult. After installation due to the transmission shaft is distorted and broken, to buy a pump shaft to seventy yuan, the masses said that “can afford the pump, can not afford to pump” is the reason. General press wells