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簡介

百龍灘(tan)水電(dian)站(zhan)廠房安(an)裝單機(ji)容(rong)(rong)量3．2萬(wan)(wan)(wan)kW的燈泡貫流式水輪(lun)發(fa)電(dian)機(ji)6臺，總(zong)裝機(ji)容(rong)(rong)量19．2萬(wan)(wan)(wan)kW，設計水頭9．7m，最大水頭18m，單機(ji)額定流量377．5立(li)方(fang)米/秒。近期(qi)保證(zheng)(zheng)出(chu)力(li)(li)878萬(wan)(wan)(wan)kW，多(duo)年(nian)(nian)平(ping)均(jun)發(fa)電(dian)量9．85億kW·h；天生橋水電(dian)站(zhan)運行(xing)后(hou)保證(zheng)(zheng)出(chu)力(li)(li)12．15萬(wan)(wan)(wan)kW，多(duo)年(nian)(nian)平(ping)均(jun)發(fa)電(dian)量11．48億kW·h；龍灘(tan)、天生橋水電(dian)站(zhan)運行(xing)后(hou)保證(zheng)(zheng)出(chu)力(li)(li)15．25萬(wan)(wan)(wan)kW，多(duo)年(nian)(nian)平(ping)均(jun)發(fa)電(dian)量13．35億kW·h；11月至翌年(nian)(nian)4月枯水期(qi)發(fa)電(dian)量分別(bie)占(zhan)年(nian)(nian)發(fa)電(dian)量的49．3%、52．6%、52．9%，發(fa)電(dian)效益(yi)十分顯著。船閘近期(qi)可通航250t船隊，過(guo)壩年(nian)(nian)貨運量180萬(wan)(wan)(wan)t。

壩址控制流(liu)(liu)域面積112500平(ping)方(fang)(fang)(fang)公里(li)。多(duo)(duo)年(nian)平(ping)均(jun)(jun)氣溫(wen)21．3℃。多(duo)(duo)年(nian)平(ping)均(jun)(jun)含沙量(liang)(liang)0．815kg/立(li)方(fang)(fang)(fang)米，實(shi)測最大含沙量(liang)(liang)14．6kg/立(li)方(fang)(fang)(fang)米，年(nian)輸沙量(liang)(liang)5350萬t。多(duo)(duo)年(nian)平(ping)均(jun)(jun)降雨量(liang)(liang)1720mm。多(duo)(duo)年(nian)平(ping)均(jun)(jun)流(liu)(liu)量(liang)(liang)2020立(li)方(fang)(fang)(fang)米/秒，實(shi)測最大流(liu)(liu)量(liang)(liang)18700立(li)方(fang)(fang)(fang)米/秒，經巖灘、大化水電站調(diao)節P=95%時的(de)(de)流(liu)(liu)量(liang)(liang)為521立(li)方(fang)(fang)(fang)米/秒，天(tian)生橋、龍(long)灘水電站建(jian)成(cheng)運行后(hou)P=95%時的(de)(de)調(diao)節流(liu)(liu)量(liang)(liang)為1202立(li)方(fang)(fang)(fang)米/秒。水庫總庫容(rong)3．4億立(li)方(fang)(fang)(fang)米，正常蓄水位126m，相應(ying)庫容(rong)0．695億立(li)方(fang)(fang)(fang)米；死水位125m，相應(ying)庫容(rong)0．648億立(li)方(fang)(fang)(fang)米。百龍(long)灘是(shi)一座低水頭河床(chuang)式(shi)徑流(liu)(liu)水電站，需對(dui)大化水電站日調(diao)節流(liu)(liu)量(liang)(liang)進行適當的(de)(de)反調(diao)節。

水庫淹(yan)沒(mei)耕(geng)地(di)1000畝，淹(yan)遷84人(ren)。

地形

壩址為(wei)低(di)山(shan)丘陵地(di)(di)形，河谷寬(kuan)(kuan)闊，河床中有(you)3座小山(shan)，漫灘基巖裸露，河床覆蓋(gai)層0～2．38m，地(di)(di)層巖性(xing)為(wei)中薄層含粉(fen)沙、鈣(gai)質泥巖夾灰巖，白云(yun)(yun)質灰巖和白云(yun)(yun)質泥灰巖互層，層面走向與河流夾角70°～80°，傾(qing)向上(shang)游30°～45°，斷(duan)(duan)層計(ji)(ji)有(you)23條，破碎帶寬(kuan)(kuan)度(du)0．03～1．0m，較大(da)斷(duan)(duan)層有(you)F9、F10、F12。緩傾(qing)角斷(duan)(duan)裂不(bu)(bu)發育。地(di)(di)震(zhen)基本烈度(du)為(wei)6度(du)，設計(ji)(ji)建筑物地(di)(di)震(zhen)不(bu)(bu)設防。

建筑

樞紐按三等工(gong)程(cheng)設計，永久建筑物(wu)為3級建筑物(wu)，按50年一(yi)遇設計洪(hong)水(shui)流量(liang)23400立方米/秒(miao)，上游(you)水(shui)位153．9m，下游(you)水(shui)位153.4m；500年一(yi)遇校核洪(hong)水(shui)29600立方米/秒(miao)，上游(you)水(shui)位159．2m，下游(you)水(shui)位158．7m。樞紐由混凝(ning)土重力式(shi)溢(yi)流壩(ba)、河床式(shi)廠房、開關站、船閘(zha)、沖沙閘(zha)、接頭(tou)壩(ba)組(zu)成。

碾(nian)壓混凝土(tu)溢流壩(ba)布置于(yu)左岸主河(he)道上，為開敞式自(zi)由泄流，總長274m，最大(da)壩(ba)高(gao)28m。堰頂高(gao)程126m、130m，長度都為100m；碾(nian)壓混凝土(tu)接頭(tou)(tou)壩(ba)頂高(gao)程135m，長74m。右(you)岸土(tu)壩(ba)接頭(tou)(tou)頂高(gao)程160．1m，長210m。

發電(dian)廠(chang)(chang)房布(bu)置(zhi)于(yu)右(you)岸(an)灘(tan)地上，其尺寸(cun)為112m×69．5m×72.1（長×寬(kuan)×高(gao)），廠(chang)(chang)頂及橋(qiao)面高(gao)程(cheng)(cheng)160．1m，安裝場及發電(dian)機層高(gao)程(cheng)(cheng)為120m，安裝高(gao)程(cheng)(cheng)101．9m，底板(ban)開挖高(gao)程(cheng)(cheng)88m。廠(chang)(chang)房兩(liang)側各(ge)設4m×8m（寬(kuan)×高(gao)）沖(chong)沙孔(kong)1個，進水口高(gao)程(cheng)(cheng)93m。開關站布(bu)置(zhi)于(yu)右(you)岸(an)壩軸線(xian)下(xia)游(you)，220kV出(chu)線(xian)3回(hui)，110kV出(chu)線(xian)1回(hui)。

單級集中式輸水(shui)船(chuan)(chuan)閘(zha)(zha)(zha)(zha)布置在(zai)(zai)右岸灘地岸邊，總長(chang)(chang)(chang)1099．8m，通(tong)(tong)航(hang)(hang)(hang)流(liu)量3500立方(fang)米/秒(miao)。上(shang)游引(yin)航(hang)(hang)(hang)道(dao)、閘(zha)(zha)(zha)(zha)首(shou)、閘(zha)(zha)(zha)(zha)室按2×500t駁(bo)船(chuan)(chuan)隊遠景通(tong)(tong)航(hang)(hang)(hang)尺(chi)寸要求設(she)計，下(xia)游引(yin)航(hang)(hang)(hang)道(dao)按2×250t駁(bo)船(chuan)(chuan)隊尺(chi)寸要求設(she)計，閘(zha)(zha)(zha)(zha)室有效(xiao)尺(chi)寸為120m×12m×2．5m（長(chang)(chang)(chang)×寬(kuan)×吃(chi)水(shui)深）。上(shang)游引(yin)航(hang)(hang)(hang)道(dao)長(chang)(chang)(chang)454．4m，底寬(kuan)37m，底高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)122．5m。上(shang)閘(zha)(zha)(zha)(zha)首(shou)28m×26m×53．1m（寬(kuan)×長(chang)(chang)(chang)×高(gao)(gao)(gao)(gao)），工作(zuo)門底坎122．5m，一期工程(cheng)(cheng)(cheng)施(shi)工至109m高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)，作(zuo)為部(bu)分二(er)期導流(liu)、初期電站降(jiang)低水(shui)位(wei)運行(xing)的(de)流(liu)道(dao)。閘(zha)(zha)(zha)(zha)室長(chang)(chang)(chang)128m，底板(ban)高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)110．8m。下(xia)閘(zha)(zha)(zha)(zha)首(shou)30m×29m×54．1m（寬(kuan)×長(chang)(chang)(chang)×高(gao)(gao)(gao)(gao)）。下(xia)游引(yin)航(hang)(hang)(hang)道(dao)長(chang)(chang)(chang)462．4m，底寬(kuan)32m，底高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)110．8m。船(chuan)(chuan)閘(zha)(zha)(zha)(zha)右側設(she)凈寬(kuan)10m沖沙閘(zha)(zha)(zha)(zha)1個，底高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)113．5m。船(chuan)(chuan)閘(zha)(zha)(zha)(zha)上(shang)閘(zha)(zha)(zha)(zha)首(shou)以下(xia)，除部(bu)分開(kai)挖外均在(zai)(zai)二(er)期工程(cheng)(cheng)(cheng)施(shi)工。

主體工程量

主體工(gong)(gong)程(cheng)(cheng)量（包(bao)括導流工(gong)(gong)程(cheng)(cheng)）：土(tu)方(fang)(fang)(fang)(fang)開(kai)挖62．89萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)，石方(fang)(fang)(fang)(fang)開(kai)挖241．36萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)（其(qi)(qi)中(zhong)(zhong)(zhong)(zhong)一(yi)(yi)(yi)期工(gong)(gong)程(cheng)(cheng)為(wei)202．65萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)），混(hun)凝土(tu)68．32萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)（其(qi)(qi)中(zhong)(zhong)(zhong)(zhong)一(yi)(yi)(yi)期工(gong)(gong)程(cheng)(cheng)為(wei)60．29萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)），土(tu)石方(fang)(fang)(fang)(fang)填筑135．19萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)（其(qi)(qi)中(zhong)(zhong)(zhong)(zhong)一(yi)(yi)(yi)期工(gong)(gong)程(cheng)(cheng)為(wei)125．37萬(wan)(wan)立方(fang)(fang)(fang)(fang)米(mi)(mi)），鋼筋18897t（其(qi)(qi)中(zhong)(zhong)(zhong)(zhong)一(yi)(yi)(yi)期為(wei)17667t），鋼材8577t（其(qi)(qi)中(zhong)(zhong)(zhong)(zhong)一(yi)(yi)(yi)期為(wei)7548t），帷幕灌漿4753m。施工(gong)(gong)對外交(jiao)通(tong)為(wei)公(gong)路運輸。砂(sha)石料(liao)(liao)為(wei)灰巖機制人工(gong)(gong)砂(sha)石料(liao)(liao)。

總投資

該工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)審定修正總(zong)(zong)投(tou)資(zi)(zi)（按1992年價格(ge)水平）為16．44億(yi)元(yuan)（一(yi)期(qi)工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)為14．18億(yi)元(yuan)），其(qi)中(zhong)靜(jing)態(tai)投(tou)資(zi)(zi)10．43億(yi)元(yuan)（一(yi)期(qi)工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)為9．72億(yi)元(yuan)）。送出工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)靜(jing)態(tai)投(tou)資(zi)(zi)1497萬元(yuan)。工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)由廣西桂冠(guan)電力股份有限公司集(ji)資(zi)(zi)建(jian)設(she)。勘(kan)測、設(she)計及監理(li)工(gong)(gong)作由廣西電力工(gong)(gong)業勘(kan)察(cha)設(she)計院承(cheng)(cheng)擔(dan)。工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)施(shi)工(gong)(gong)由廣西水電工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)局承(cheng)(cheng)包。工(gong)(gong)程(cheng)(cheng)(cheng)(cheng)施(shi)工(gong)(gong)于(yu)1993年2月(yue)18日進場，設(she)計計劃總(zong)(zong)工(gong)(gong)期(qi)4年8個月(yue)（包括準備工(gong)(gong)期(qi)），第一(yi)臺機組發電工(gong)(gong)期(qi)3年。