Scientific and technological connotation analysis and practical enlightenment of Dujiangyan Irrigation Project "taking advantage of the situation and following the natural law and adapting measures to the times" project

For more than 2 000 years,Dujiangyan Irrigation Project has created a model of ecological civilization in which people and nature coexist harmoniously with its scientific design concept and water control practice.This paper has studied the core concept of "taking advantage of the situation (YinShi) and following the natural law(LiDao),adapting measures to the time(YinShiZhiYi)"."Taking advantage of the situation(YinShi)" reflects the respect and awe for nature in the construction of Dujiangyan Irrigation Project; 'following the natural law(LiDao)' is reflected in the utilization and transformation of nature based on respecting the laws of nature."Taking advantage of the situation and following the natural law" is the core concept of Dujiangyan Irrigation Project construction design.Dujiangyan Irrigation Project builders learn from nature and use the mountain,terrain and water potential to achieve a high degree of coordination and unity of people,land and water."Adapting measures to the time"is the magic weapon of Dujiangyan Irrigation Project's long-term operation.All its projects have been in a dynamic balance coordinated with the evolution of Minjiang River.All changes are based on Minjiang River water regime and river topography,and follow the scientific idea of water diversion with no damming and automatic water and sediment regulation.Due to different weather and water potential,Dujiangyan Irrigation Project will carry out artificial activities such as river closure,bamboo cage for water retaining and beach scouring according to seasonal changes,floods and droughts.From the macro point of view,Dujiangyan Irrigation Project should adjust the project layout and increase or decrease the auxiliary projects accordingly according to the flow change trend of Minjiang River,the swing of internal and external rivers,and the distribution of upstream shoals and dunes; At the same time,it is also necessary to adjust the management system and operating mechanism according to different current situations.In modern water engineering construction and management,it is necessary to make the past serve the present,and unify historical inheritance with innovation of the times.With the concept of taking advantage of the situation and following the natural law,we cleverly integrate the adaptation,transformation,and utilization of nature,and integrate various service functions such as water supply,flood control,irrigation,and shipping with top-level design; To maintain the vitality of engineering through long-term efforts; Adapt to the times and meet the needs of the people through comprehensive innovation.