基于Grasshopper-SWMM的林木补灌用多棱褶皱式集雨托盘集流性能评价OA
Estimation of Collection Performance of a Rainwater Harvesting Tray with Multi Ribbed Fold Using for Forest Supplementary Irrigation Based on Grasshopper-SWMM
植树造林是防止旱区土壤侵蚀、减少水土流失、解决生态环境问题的重要举措,但土壤干旱、降水分布不均和雨水利用率低严重制约了树苗成活率.为此设计了一种林木补灌用集雨托盘(Rainwater Harvesting Tray,RHT),该集雨托盘采用多棱褶皱式设计,可有效提高雨水收集面积,使用时集雨托盘位于林冠下,可实现雨水就地原位集蓄入渗,补充土壤水分.为提高集雨托盘集流性能,通过将集雨托盘结构数字化重构后,建立了一种基于Grasshopper-SWMM的集雨托盘集流性能评价模型,模型计算值与实测值相对误差在2.5%以内.模拟结果表明,当集雨托盘表面棱体数量为26条、棱体高度为3 cm、集流槽倾斜角度为13°时,集雨托盘集流性能最优.
Afforestation is an important approach to prevent soil erosion in dry areas,reduce water and soil loss,and solve ecological and environmental problems.However,soil drought,uneven distribution of precipitation,and low rainwater utilization efficiency in dryland seriously restrict the survival rate of seedlings.To address these issues,a Rainwater Harvesting Tray(RHT)with a multi-ribbed fold design was developed.It can effectively increase the rainwater collection area.When placed under the forest canopy,it achieves in-situ rainwater collection and infiltration to replenish soil moisture.After digitizing the structure of the rainwater harvesting tray product,the collection performance of RHT was estimated using an evaluation model based on Grasshopper-SWMM.The relative error between the calculated and measured rainwater collection amount was within 2.5%.The simulation results show that when the number of ribs on the surface of the rainwater collection tray is 26,the height of the ribs is 3 cm,and the inclination angle of the collection groove is 13°,the collection performance of the rainwater collection tray is optimal.
贾博焜;刘旭飞;张林
西北农林科技大学水利与建筑工程学院,陕西 杨凌 712100西北农林科技大学水利与建筑工程学院,陕西 杨凌 712100西北农林科技大学水利与建筑工程学院,陕西 杨凌 712100||西北农林科技大学水土保持研究所,陕西 杨凌 712100
农业科技
植树造林集雨补灌集流性能数值模拟集雨托盘性能评价模型
afforestationrainfall catchment and supplementary irrigationrainwater concentration performancenumerical simulationrainwater collection trayperformance evaluation model
《节水灌溉》 2026 (3)
7-13,25,8
国家自然科学基金项目(52079131).
评论