文章(zhang)來(lai)源：中國電力建設集團有限公司 發(fa)布時間：2021-12-16
12月7日，中(zhong)國電建所屬水(shui)電基礎局承建的(de)世(shi)界最深振(zhen)沖(chong)(chong)碎石樁(zhuang)工(gong)程——拉(la)哇(wa)水(shui)電站上(shang)游圍堰地(di)基處理振(zhen)沖(chong)(chong)碎石樁(zhuang)二期工(gong)程正式開工(gong)。
拉哇水(shui)電(dian)(dian)站(zhan)位于金沙江上游(you)的川藏河段，左(zuo)岸為四川省(sheng)甘孜藏族自治州巴塘縣(xian)拉哇鄉(xiang)(xiang)，右岸為西(xi)藏昌都自治州芒康(kang)縣(xian)朱巴籠鄉(xiang)(xiang)，是金沙江上游(you)13級開發方案中的第8級，控制集水(shui)面(mian)積176027平方千米。該電(dian)(dian)站(zhan)是國家加快深度貧困區能源開發助力脫貧攻堅(jian)(jian)的重點水(shui)電(dian)(dian)項目，對助力藏區脫貧攻堅(jian)(jian)、全面(mian)建成小康(kang)社(she)會和我國能源結構(gou)調整(zheng)具有重要意義(yi)。
水(shui)(shui)電(dian)(dian)基礎局承建的(de)拉哇(wa)水(shui)(shui)電(dian)(dian)站上游圍(wei)堰(yan)超深振沖碎石樁(zhuang)旨在建成70米級(ji)振沖樁(zhuang)，為(wei)電(dian)(dian)站60米圍(wei)堰(yan)、基坑邊坡安全穩定提供保障，是決定拉哇(wa)水(shui)(shui)電(dian)(dian)站成敗的(de)關鍵性工(gong)(gong)(gong)程(cheng)。該工(gong)(gong)(gong)程(cheng)分兩(liang)期(qi)(qi)施(shi)(shi)工(gong)(gong)(gong)，一期(qi)(qi)施(shi)(shi)工(gong)(gong)(gong)右岸，由左岸束(shu)窄(zhai)河(he)床過流；二期(qi)(qi)施(shi)(shi)工(gong)(gong)(gong)左岸，由右岸束(shu)窄(zhai)河(he)床過流。工(gong)(gong)(gong)程(cheng)具有(you)工(gong)(gong)(gong)期(qi)(qi)短、工(gong)(gong)(gong)程(cheng)量(liang)大，施(shi)(shi)工(gong)(gong)(gong)技(ji)術(shu)難度高(gao)的(de)特點，主要施(shi)(shi)工(gong)(gong)(gong)技(ji)術(shu)業內罕見，遠遠超出(chu)行業現(xian)有(you)水(shui)(shui)平，施(shi)(shi)工(gong)(gong)(gong)無先例可循。
【責任編輯：趙藝涵】