三峽工程截流技術(shù)
發(fā)布時(shí)間:2019-05-29 11:09
【摘要】:三峽工程建設(shè)采用"三期導(dǎo)流、明渠通航"的施工導(dǎo)流方案,大江截流最大水深60 m、實(shí)測(cè)最大流量11600 m~3 s~(-1)大,河床深厚覆蓋層達(dá)20 m,截流過程潛在堤頭坍塌風(fēng)險(xiǎn);明渠截流最大設(shè)計(jì)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(jìn)占拋投強(qiáng)度11.46萬(wàn)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(yù)平拋墊底,上游單戧立堵、雙向進(jìn)占,下游尾隨進(jìn)占"的截流方案;導(dǎo)流明渠截流采用"墊底加糙、雙戧立堵、上游雙向進(jìn)占、下游單向進(jìn)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(shí)施,標(biāo)志中國(guó)河道截流技術(shù)躋身世界領(lǐng)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(hào):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(hào):2487896
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