芒果视频下载

概述

大(da)花(hua)水(shui)水(shui)電站(zhan)大(da)壩(ba)(ba)(拋(pao)物線雙曲拱(gong)壩(ba)(ba)+左岸重力(li)壩(ba)(ba))位于高山峽谷區,壩(ba)(ba)址兩岸山壁(bi)陡峭,混(hun)凝(ning)土入(ru)倉(cang)(cang)布置(zhi)(zhi)困難。根據該工(gong)程(cheng)特有(you)的地形條件(jian),在(zai)重力(li)壩(ba)(ba)左岸邊(bian)坡分(fen)二期(qi)布置(zhi)(zhi)了(le)(le)3條負壓(ya)溜(liu)(liu)管(guan),即一期(qi)底線采(cai)(cai)用了(le)(le)800mm寬(kuan)的膠帶機和(he)(he)2條負壓(ya)溜(liu)(liu)管(guan);二期(qi)高線采(cai)(cai)用了(le)(le)1000 mm寬(kuan)的膠帶機和(he)(he)1條負壓(ya)溜(liu)(liu)管(guan);拱(gong)壩(ba)(ba)混(hun)凝(ning)土的入(ru)倉(cang)(cang)則主要采(cai)(cai)用了(le)(le)緩(huan)(huan)降溜(liu)(liu)管(guan)(由于拱(gong)壩(ba)(ba)兩岸邊(bian)坡較陡,平均角(jiao)度(du)70°,普通負壓(ya)溜(liu)(liu)管(guan)不(bu)適用于此種高陡邊(bian)坡輸送(song)碾壓(ya)混(hun)凝(ning)土)。采(cai)(cai)用緩(huan)(huan)降溜(liu)(liu)管(guan)輸送(song)碾壓(ya)混(hun)凝(ning)土不(bu)僅可保證質(zhi)量,而(er)且在(zai)輸送(song)強度(du)、安裝工(gong)期(qi)、安裝及運行成本等(deng)多(duo)方面均優(you)于負壓(ya)溜(liu)(liu)管(guan),為拱(gong)壩(ba)(ba)快速(su)施工(gong)打下了(le)(le)基礎。

工程介紹

大(da)花(hua)水水電站位于(yu)貴州省(sheng)開(kai)陽(yang)縣與(yu)福泉市(shi)交界(jie)處、清水河(he)中(zhong)游峽谷(gu)河(he)段內，為(wei)清水河(he)干流水電梯(ti)級開(kai)發的(de)(de)第三級。電站總裝(zhuang)機容量(liang)200MW，總投資14億元。攔河(he)大(da)壩(ba)(ba)為(wei)拋物線(xian)雙曲(qu)拱壩(ba)(ba)+重力墩(dun)，左岸為(wei)重力墩(dun)，右岸為(wei)雙曲(qu)拱壩(ba)(ba)，大(da)壩(ba)(ba)軸線(xian)總長287.56米(mi)，最大(da)壩(ba)(ba)高134.50米(mi)，厚高比0.171，是國內在建的(de)(de)最高碾壓混(hun)凝(ning)土雙曲(qu)薄拱壩(ba)(ba)。壩(ba)(ba)身設(she)有兩(liang)個(ge)泄洪中(zhong)孔和三個(ge)溢流表孔，在拱壩(ba)(ba)下游還(huan)布置了一個(ge)集水井(jing)和一個(ge)吊物井(jing)，壩(ba)(ba)體(ti)設(she)置兩(liang)條誘(you)導(dao)縫(feng)，兩(liang)岸設(she)置周邊短縫(feng)，拱壩(ba)(ba)壩(ba)(ba)身較(jiao)高且體(ti)型結構復雜。

樞紐工(gong)(gong)程(cheng)(cheng)主(zhu)要由碾壓凝(ning)土拱壩(ba)(ba)(ba)、左岸(an)重力墩、壩(ba)(ba)(ba)頂開敞(chang)式溢流表空、泄(xie)洪(hong)兼(jian)沖沙中孔(kong)、左岸(an)引水系統及地(di)面廠房、開關站等組成。工(gong)(gong)程(cheng)(cheng)總工(gong)(gong)期(qi)3年(nian)零8個(ge)(ge)月(yue)，其中施工(gong)(gong)準備期(qi)10個(ge)(ge)月(yue)，主(zhu)體工(gong)(gong)程(cheng)(cheng)施工(gong)(gong)期(qi)2年(nian)零5個(ge)(ge)月(yue)。工(gong)(gong)程(cheng)(cheng)關鍵施工(gong)(gong)線路為引水隧洞和大壩(ba)(ba)(ba)的(de)填筑施工(gong)(gong)。

大花水為梯級開發規劃的第三個(ge)梯級。清水河梯級水電開發是(shi)烏(wu)江公(gong)司首次采用多元投資貴州(zhou)中(zhong)小(xiao)型水電的嘗(chang)試,投資方分別為烏(wu)江公(gong)司、貴州(zhou)騰(teng)元電力(li)發展有限責任公(gong)司、貴陽(yang)勘測設計研(yan)究院、貴州(zhou)黔能天和礦(kuang)業有限公(gong)司、開陽(yang)縣。

工程設計

樞紐工程主要由碾壓凝(ning)土拱壩、左(zuo)岸重(zhong)力(li)墩、壩頂開敞(chang)式(shi)溢流表(biao)空、泄(xie)洪兼沖沙中孔、左(zuo)岸引(yin)水(shui)系統及地面廠房、開關站等(deng)組成。包含(han)清水(shui)河大橋(qiao)、3#公(gong)路、引(yin)水(shui)隧洞(dong)(dong)(dong)2#、3#支(zhi)洞(dong)(dong)(dong)、引(yin)水(shui)隧洞(dong)(dong)(dong)。公(gong)司管段全長4.35km，施(shi)工里(li)程K0+000～K4+349.7。土石方(fang)62.3萬立(li)方(fang)米，涵洞(dong)(dong)(dong)280米/35座，大橋(qiao)144.54米/1座，隧道(dao)1949.579米/3座。

攔河大(da)(da)壩(ba)(ba)為(wei)(wei)拋物線雙曲拱壩(ba)(ba)+左岸重(zhong)力(li)墩，雙曲拱壩(ba)(ba)最(zui)大(da)(da)壩(ba)(ba)高(gao)(gao)(gao)134.50m。進(jin)水(shui)口為(wei)(wei)壩(ba)(ba)式進(jin)水(shui)口，引水(shui)隧洞位(wei)于(yu)左岸，長(chang)約5360m，開挖(wa)斷面直徑(jing)8.20m，全(quan)斷面鋼(gang)筋混(hun)凝土(tu)襯砌，襯砌0.60m；調壓井阻(zu)抗孔內(nei)徑(jing)為(wei)(wei)3.45m，調壓井內(nei)徑(jing)為(wei)(wei)16.0m，襯厚1.0m。壓力(li)鋼(gang)管(guan)主(zhu)(zhu)(zhu)管(guan)內(nei)徑(jing)6.0m，支管(guan)內(nei)徑(jing)均為(wei)(wei)4.0m，主(zhu)(zhu)(zhu)管(guan)段和岔管(guan)段外側回填(tian)C20混(hun)凝土(tu)厚1.0m，支管(guan)段外側回填(tian)C20混(hun)凝土(tu)厚0.8m。電(dian)站主(zhu)(zhu)(zhu)廠房尺(chi)寸為(wei)(wei)55.00×23.00×58.30m（長(chang)×寬×高(gao)(gao)(gao)），機(ji)組安(an)裝(zhuang)高(gao)(gao)(gao)程712.50m，發電(dian)機(ji)層高(gao)(gao)(gao)程724.00m，安(an)裝(zhuang)間(jian)和尾水(shui)平(ping)臺(tai)高(gao)(gao)(gao)程為(wei)(wei)736.50m，安(an)裝(zhuang)間(jian)布置(zhi)在主(zhu)(zhu)(zhu)廠房右(you)端，凈長(chang)20.50m；副廠房布置(zhi)在主(zhu)(zhu)(zhu)廠房上(shang)(shang)游面，尺(chi)寸為(wei)(wei)55.00×12.50×41.20；主(zhu)(zhu)(zhu)變場及(ji)GIS室位(wei)于(yu)主(zhu)(zhu)(zhu)廠房上(shang)(shang)游。１號(hao)支洞的縱坡為(wei)(wei)1.283％隧道，全(quan)長(chang)190.32米(mi)。隧道高(gao)(gao)(gao)6.6米(mi)、寬7.2米(mi)，洞口明挖(wa)土(tu)石方(fang)39000立方(fang)米(mi)。

工程施工

引水(shui)(shui)(shui)隧洞(dong)(dong)(dong)襯(chen)砌(qi)提(ti)前(qian)完工(gong)    由(you)中鐵五局五公司(si)施(shi)工(gong)的大(da)(da)(da)花(hua)水(shui)(shui)(shui)水(shui)(shui)(shui)電(dian)(dian)站引水(shui)(shui)(shui)隧洞(dong)(dong)(dong)襯(chen)砌(qi)混凝土提(ti)前(qian)完工(gong)。大(da)(da)(da)花(hua)水(shui)(shui)(shui)水(shui)(shui)(shui)電(dian)(dian)站工(gong)程(cheng)(cheng)不僅(jin)是貴(gui)州省西部開(kai)發戰(zhan)略(lve)工(gong)程(cheng)(cheng)，也是烏江水(shui)(shui)(shui)電(dian)(dian)梯級開(kai)發龍(long)頭工(gong)程(cheng)(cheng)和國家西電(dian)(dian)東送(song)工(gong)程(cheng)(cheng)。大(da)(da)(da)花(hua)水(shui)(shui)(shui)水(shui)(shui)(shui)電(dian)(dian)站引水(shui)(shui)(shui)隧洞(dong)(dong)(dong)全長5338.805米(mi)，位于貴(gui)州省開(kai)陽縣境內，隧洞(dong)(dong)(dong)坡度(du)(du)為(wei)5‰，開(kai)挖(wa)斷面為(wei)圓形，設計開(kai)挖(wa)直(zhi)徑最大(da)(da)(da)9.7米(mi)，襯(chen)砌(qi)后隧洞(dong)(dong)(dong)圓形斷面凈空直(zhi)徑7.3米(mi)，采用鋼筋混凝土全斷面襯(chen)砌(qi)，襯(chen)砌(qi)厚度(du)(du)最大(da)(da)(da)1.2米(mi)，全斷面針梁式襯(chen)砌(qi)臺車施(shi)工(gong)，引水(shui)(shui)(shui)隧洞(dong)(dong)(dong)共布(bu)置4條施(shi)工(gong)支洞(dong)(dong)(dong)、共3家單位施(shi)工(gong)。

自2005年(nian)(nian)2月(yue)中標以(yi)來(lai)，在(zai)工(gong)(gong)(gong)程建設中，五公司(si)項目部(bu)(bu)強(qiang)化施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)管理、狠抓(zhua)施(shi)(shi)(shi)(shi)組作業、周(zhou)密安排部(bu)(bu)署，于(yu)2006年(nian)(nian)12月(yue)17日(ri)實現(xian)了(le)隧(sui)洞提前(qian)貫(guan)通到(dao)分界點。應業主要求，對(dui)隧(sui)洞施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)開(kai)挖和(he)襯(chen)砌(qi)任務再次追加(jia)，在(zai)面臨工(gong)(gong)(gong)期緊、任務重、施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)難度大(da)的(de)情況下，項目部(bu)(bu)合理調整施(shi)(shi)(shi)(shi)組，加(jia)強(qiang)對(dui)隧(sui)洞開(kai)挖和(he)襯(chen)砌(qi)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)的(de)工(gong)(gong)(gong)序(xu)銜接，強(qiang)化現(xian)場管理，響應業主提出的(de)“按期下閘蓄水發(fa)電”的(de)工(gong)(gong)(gong)期目標，積極開(kai)展勞動(dong)競(jing)賽活動(dong)，掀起大(da)干(gan)生產高(gao)潮。創下了(le)連續3個月(yue)完(wan)(wan)成(cheng)(cheng)月(yue)襯(chen)砌(qi)180米的(de)好成(cheng)(cheng)績，確保了(le)1月(yue)13日(ri)提前(qian)完(wan)(wan)成(cheng)(cheng)了(le)全部(bu)(bu)混凝土襯(chen)砌(qi)任務，成(cheng)(cheng)為該引水隧(sui)洞第一家完(wan)(wan)成(cheng)(cheng)混凝土襯(chen)砌(qi)的(de)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)單位，得到(dao)了(le)業主的(de)高(gao)度評價(jia)。

１號支洞(dong)(dong)貫(guan)通    2009年(nian)12月6日17時，由(you)電(dian)氣化(hua)公(gong)司施(shi)(shi)工(gong)的(de)(de)貴州大花水水電(dian)站１號支洞(dong)(dong)順利貫(guan)通。1號支洞(dong)(dong)是(shi)為開(kai)鑿(zao)引水隧洞(dong)(dong)而(er)設(she)計的(de)(de)施(shi)(shi)工(gong)洞(dong)(dong)，位(wei)于(yu)(yu)開(kai)陽縣清水河北岸，是(shi)一條縱坡為1.283％隧道，全(quan)長(chang)190.32米(mi)(mi)。隧道高6.6米(mi)(mi)、寬7.2米(mi)(mi)，洞(dong)(dong)口(kou)明(ming)挖土石方39000立方米(mi)(mi)，工(gong)程(cheng)于(yu)(yu)7月28日正式開(kai)工(gong)，掘(jue)進方式為新奧法施(shi)(shi)工(gong)。這是(shi)電(dian)氣化(hua)公(gong)司介入土建領域施(shi)(shi)工(gong)的(de)(de)首座隧洞(dong)(dong)。

投產發電

2007年11月30日上(shang)午，以(yi)中國水(shui)(shui)電(dian)建設集(ji)團水(shui)(shui)電(dian)八局為(wei)主(zhu)承建的貴州清水(shui)(shui)河大花水(shui)(shui)水(shui)(shui)電(dian)站正式投產發(fa)電(dian)。

中國水(shui)電(dian)(dian)八局先后(hou)中標承建大(da)(da)花水(shui)電(dian)(dian)站大(da)(da)壩工(gong)(gong)(gong)程、人工(gong)(gong)(gong)砂石料生產系(xi)統。自2004年6月進場(chang)以來(lai)，全體員工(gong)(gong)(gong)先后(hou)克服地(di)質(zhi)條(tiao)件復雜(za)、工(gong)(gong)(gong)期(qi)緊、施(shi)工(gong)(gong)(gong)難(nan)度大(da)(da)、超標洪水(shui)沖毀圍堰、山體大(da)(da)滑(hua)坡等一系(xi)列困(kun)難(nan)，發(fa)揚團結(jie)、拼(pin)搏、開拓、奉獻的精(jing)神(shen)，積極應(ying)用新工(gong)(gong)(gong)藝、新材料，按業主要求完成各項節(jie)點工(gong)(gong)(gong)期(qi)，順利完成大(da)(da)花水(shui)電(dian)(dian)站各項施(shi)工(gong)(gong)(gong)任務。

大(da)花水水電站(zhan)(zhan)大(da)壩(ba)施(shi)工(gong)(gong)質(zhi)量(liang)(liang)優(you)良，數控質(zhi)量(liang)(liang)優(you)良率達到86%，外觀質(zhi)量(liang)(liang)良好，并創造了(le)碾壓混(hun)(hun)凝(ning)土(tu)連續上(shang)升33.5米的中(zhong)國(guo)企業施(shi)工(gong)(gong)新紀錄(lu)，其快速施(shi)工(gong)(gong)技術研(yan)究在(zai)2007年(nian)第五(wu)屆碾壓混(hun)(hun)凝(ning)土(tu)國(guo)際大(da)壩(ba)會(hui)議上(shang)作了(le)專題報(bao)告(gao)，國(guo)際大(da)壩(ba)會(hui)議專家對(dui)大(da)花水電站(zhan)(zhan)施(shi)工(gong)(gong)速度、施(shi)工(gong)(gong)質(zhi)量(liang)(liang)給予高度評價，我局在(zai)碾壓混(hun)(hun)凝(ning)土(tu)施(shi)工(gong)(gong)史上(shang)又塑造了(le)一座(zuo)豐碑。

復建工程

大(da)花水(shui)(shui)水(shui)(shui)電(dian)站庫區(qu)淹(yan)沒(mei)公路(lu)及(ji)獨木(mu)河(he)大(da)橋的復(fu)建(jian)工程，由(you)貴州(zhou)省發展和改(gai)革(ge)委員會(hui)批準建(jian)設。大(da)花水(shui)(shui)電(dian)站建(jian)成后，獨木(mu)河(he)大(da)橋及(ji)兩岸的部分公路(lu)將被淹(yan)沒(mei)，所以需要新建(jian)一(yi)座橋梁及(ji)公路(lu)恢復(fu)原有(you)功能；全(quan)線(xian)路(lu)基寬(kuan)度(du)設計(ji)為(wei)6.5米，按山嶺重(zhong)丘四(si)級公路(lu)設計(ji)。行車道寬(kuan)度(du)5.5m；路(lu)面類型為(wei)泥結(jie)碎石；是全(quan)長119米的箱(xiang)型拱橋；橋面寬(kuan)度(du)為(wei)凈-7m。