三峽工程截流技術
發(fā)布時間:2019-05-29 11:09
【摘要】:三峽工程建設采用"三期導流、明渠通航"的施工導流方案,大江截流最大水深60 m、實測最大流量11600 m~3 s~(-1)大,河床深厚覆蓋層達20 m,截流過程潛在堤頭坍塌風險;明渠截流最大設計流量10300 m~3 s~(-1)、落差4.11 m、龍口流速7 m s~(-1)、水深20 m,明渠基面平整光滑、不利拋投料穩(wěn)定,截流進占拋投強度11.46萬立方米/日;大江截流和明渠截流均需兼顧施工期通航要求.大江截流采用"預平拋墊底,上游單戧立堵、雙向進占,下游尾隨進占"的截流方案;導流明渠截流采用"墊底加糙、雙戧立堵、上游雙向進占、下游單向進占"的方案.大江截流和明渠截流的綜合困難程度乃世界截流史所罕見,兩次截流的成功實施,標志中國河道截流技術躋身世界領先地位.
[Abstract]:The construction of the three Gorges Project adopts the construction diversion scheme of "third stage diversion and open channel navigation". The maximum water depth of river closure is 60 m, the measured maximum flow rate is 11600 m 鈮,
本文編號:2487896
[Abstract]:The construction of the three Gorges Project adopts the construction diversion scheme of "third stage diversion and open channel navigation". The maximum water depth of river closure is 60 m, the measured maximum flow rate is 11600 m 鈮,
本文編號:2487896
本文鏈接:http://sikaile.net/kejilunwen/shuiwenshuili/2487896.html
最近更新
教材專著