山丘区土地整理探讨

针对山丘区特殊的地形、水资源情况,对灌溉水源选择、渠道最优断面形式确定、河堤附近农田排水进行了初步探讨。结果表明,山丘区灌溉水源以降雨形成的两岸冲沟和蓄水池为水源较好;渠道断面宜采用宽深比在0.7-0.8之间的梯形或U形断面;河堤附近田块排水可在河堤与两岸冲沟相交处,河堤呈"八"字形沿冲沟上游加长至河堤堤顶等高程处,同时将河堤两旁的河滩地整理成田面坡度靠近河堤附近高,排水沟傍山布置并与两岸冲沟相连,河堤附近田块灌溉以蓄水池蓄水灌溉替代渠道从河道取水灌溉,保证河堤完整性。

The discussion on the grading in hilly area

This paper discusses the special topography,water resources,and the choice of irrigation water resource,the optimal channel cross-section form decision,and farmland drainage near the riverbank in hilly areas.The results indicates that rainfall forming the gully and reservoir as a irrigation water resource is better,and the ratio of wide and depth of the cross-section of channels is between 0.7-0.8,and the form is trapezoidal or U-shaped;the drainage near embankment can be built in the intersection of the embankment and gully,and making it to be y-shaped and lengthened to the crest elevation of the riverbank along the upper,at the same time on both sides of the bottomland will make slope higher next to the embankment,gutters are layout next to the hill,and connected to the gullies,taking the reservoir as the irrigation water resource instead of taking water from river to ensure the integrity of the riverbank.