摘要
为了解双排尼龙阻沙网-草方格联合沙障的防风效应,进行孔隙度为40％、45％、55％的双排尼龙阻沙网-草方格联合沙障风洞实验,研究在6、10、14m·s-1等3种风速下的风速加速率等值线、防风效能和风速廓线指标.结果表明:(1)在不同风速条件下,双排尼龙阻沙网-草方格联合沙障防风效应随着来流风速增大而明显降低;(2)40％孔隙度双排尼龙阻沙网-草方格联合沙障防风效应较好,而45％孔隙度时防风效应较差,55％孔隙度防风效应最差;(3)双排尼龙阻沙网-草方格联合沙障在防风效应方面存在累加.因此,建议在实际应用中采用40％孔隙度双排尼龙阻沙网-草方格联合沙障,以获得最佳防风效应.
Abstract
To study the windproof effect of double-row nylon sand-blocking net-grass square combination,wind tunnel experiments of double-row nylon sand-blocking net-grass square lattice with porosity of 40％,45％,and 55％were carried out,and the contours of wind acceleration rate,windproof efficacy,and wind contour indexes were investigated under the three kinds of wind speeds,namely,6,10 m·s-1 and 14 m·s-1.The results show that:(1)Under different wind speed conditions,the windproof effect of double-row nylon sand-blocking net-grass combination decreases significantly with the increase of the incoming wind speed.(2)The windproof effect of the combined use of double-row nylon sand-blocking net-grass squares using a porosity of 40％is relatively bet-ter,whereas the windproof effect is relatively poorer when using a porosity of 45％,and the worst is found in the case of the windproof effect of porosity of 55％.(3)There is a cumulation of windproof effects in the combined application of double-row nylon sand-blocking net-grass squares.Therefore,it is recommended that a 40％poros-ity double-row nylon sand-blocking net-grass square grid be used in combination with practical applications to obtain the best wind protection effect.
基金项目
交通运输行业科技项目(2022-ZD-007)
新疆交通运输厅科技项目(KY2020050701)
NETL
NSTL
万方数据