文章來源：中國電力建設集團有限公司 發布(bu)時間：2021-12-16
12月7日，中(zhong)國(guo)電建所屬水電基(ji)礎(chu)局(ju)承(cheng)建的(de)世(shi)界最(zui)深振沖(chong)碎石(shi)樁(zhuang)工程(cheng)——拉哇(wa)水電站上游圍堰地基(ji)處理振沖(chong)碎石(shi)樁(zhuang)二期工程(cheng)正式開工。
拉哇水電(dian)(dian)站位于(yu)金沙江上(shang)游的川(chuan)藏(zang)河段，左岸(an)為四川(chuan)省甘孜藏(zang)族自治(zhi)州巴塘縣(xian)拉哇鄉(xiang)(xiang)，右岸(an)為西藏(zang)昌都自治(zhi)州芒康(kang)縣(xian)朱巴籠(long)鄉(xiang)(xiang)，是(shi)金沙江上(shang)游13級(ji)開(kai)發方案中的第8級(ji)，控制(zhi)集水面積176027平方千米(mi)。該電(dian)(dian)站是(shi)國家(jia)加快深度貧困區能源開(kai)發助(zhu)力脫貧攻(gong)堅(jian)的重點(dian)水電(dian)(dian)項目，對助(zhu)力藏(zang)區脫貧攻(gong)堅(jian)、全(quan)面建成小(xiao)康(kang)社會(hui)和我國能源結(jie)構(gou)調整具有重要(yao)意義。
水電(dian)基礎局承建(jian)的(de)拉(la)哇水電(dian)站上游圍(wei)堰超(chao)深振沖(chong)碎石樁旨在建(jian)成70米級振沖(chong)樁，為(wei)電(dian)站60米圍(wei)堰、基坑邊(bian)坡安(an)全穩定提供保障(zhang)，是(shi)決定拉(la)哇水電(dian)站成敗的(de)關鍵性工(gong)(gong)(gong)程。該工(gong)(gong)(gong)程分兩期施(shi)(shi)工(gong)(gong)(gong)，一(yi)期施(shi)(shi)工(gong)(gong)(gong)右岸，由(you)左(zuo)(zuo)岸束窄河床過(guo)(guo)流；二期施(shi)(shi)工(gong)(gong)(gong)左(zuo)(zuo)岸，由(you)右岸束窄河床過(guo)(guo)流。工(gong)(gong)(gong)程具有(you)工(gong)(gong)(gong)期短、工(gong)(gong)(gong)程量大，施(shi)(shi)工(gong)(gong)(gong)技術(shu)難度(du)高的(de)特點，主(zhu)要施(shi)(shi)工(gong)(gong)(gong)技術(shu)業(ye)內罕見，遠(yuan)遠(yuan)超(chao)出行業(ye)現(xian)有(you)水平，施(shi)(shi)工(gong)(gong)(gong)無先例可(ke)循(xun)。
【責任編輯(ji)：趙藝(yi)涵】