甘肃“引大入秦”引水工程建成通水我国施工难度最大的引水工程──引大入秦长达８６．９５ｋｍ的总干渠于１９９４年６月２６日全线贯通，并于当年１０月顺利通水。这项大型自流灌溉工程建成后，每年可引水４．４亿ｍ３，灌溉５．７万ｈｍ２荒原，从而使人迹罕至的秦王川... Gansu “lead to import Qin” diversion project completed through water China’s most difficult construction of water diversion project ─ ─ lead into the Qin up to 86.95km of the main trunk on June 26, 1994 across the board, and in October that year, through the smooth water. After the completion of this large-scale gravity irrigation project, it will divert 440 million m3 of irrigation water and irrigate 57,000 hm2 of wasteland every year, leaving the Qinwang River inaccessible.