【摘要】：梁式格柵壩是常用的泥石流透過型攔砂壩之一,因其攔粗排細、汰沙排水等特點以及良好的工程和環(huán)境效益而在泥石流防治工程中有較好的應用前景。通過試驗模擬梁式格柵壩對泥石流的攔截過程,提出了一種考慮多因素影響的格柵壩閉塞臨界條件綜合判據(jù)F。當F≤3時,梁式格柵壩表現(xiàn)為全閉塞;當3F11時,梁式格柵壩表現(xiàn)為部分閉塞;當F≥11時,梁式格柵壩表現(xiàn)為未閉塞。研究認為橫梁間距對泥石流梁式格柵壩閉塞條件的影響大于泥石流容重的影響,而溝道縱坡相對上述兩者影響有限;分析得到了梁式格柵壩攔沙率與泥石流容重以及橫梁間距之間的計算關系式;此外,試驗發(fā)現(xiàn)梁式格柵壩的閉塞表現(xiàn)和攔砂性能與泥石流的速度和顆粒形狀有一定關系。
[Abstract]:Beam grille dam is one of the commonly used debris flow through sand bar. It has a good application prospect in debris flow prevention and control engineering because of its characteristics of coarse drainage, sand removal and drainage, as well as good engineering and environmental benefits. By simulating the blocking process of debris flow by beam grille dam, a comprehensive criterion of critical condition for blocking of grille dam is proposed, which takes into account the influence of many factors. When F 鈮，

本文編號：2125812