簡要介紹
藺河(he)(he)口水(shui)電(dian)(dian)站(zhan)位于陜西省嵐(lan)(lan)(lan)皋縣(xian)境內(nei)的嵐(lan)(lan)(lan)河(he)(he)干流(liu)上,是嵐(lan)(lan)(lan)河(he)(he)梯(ti)級規劃中(zhong)的第三(san)座水(shui)電(dian)(dian)站(zhan),也是嵐(lan)(lan)(lan)河(he)(he)流(liu)域(yu)唯一的控制(zhi)性(xing)工程(cheng)。工程(cheng)以(yi)發(fa)電(dian)(dian)為(wei)主(zhu),兼顧養殖、旅游等綜(zong)合(he)利用效(xiao)益。壩址以(yi)上控制(zhi)流(liu)域(yu)面積1450平方(fang)公(gong)里(li),多(duo)(duo)年平均(jun)流(liu)量(liang)34.9立方(fang)米(mi)/秒,多(duo)(duo)年平均(jun)年徑流(liu)量(liang)11億(yi)立方(fang)米(mi),水(shui)庫總庫容1.47億(yi)立方(fang)米(mi),正常蓄水(shui)位512m,死(si)水(shui)位485m,調(diao)節庫容0.875億(yi)立方(fang)米(mi),為(wei)不完全年調(diao)節水(shui)庫。電(dian)(dian)站(zhan)裝(zhuang)機容量(liang)72MW,多(duo)(duo)年平均(jun)發(fa)電(dian)(dian)量(liang)2.23億(yi)kW×h。
電站(zhan)樞紐由(you)攔河壩(ba)(ba)、泄(xie)(xie)洪隧洞(dong)(dong)(dong)(dong)、引水(shui)隧洞(dong)(dong)(dong)(dong)、發(fa)電廠房和(he)(he)開關站(zhan)等組成。攔河壩(ba)(ba)為碾(nian)壓混凝土雙曲拱(gong)壩(ba)(ba),為單心(xin)圓、變半(ban)徑、等厚雙曲不對稱(cheng)拱(gong)壩(ba)(ba)。壩(ba)(ba)頂(ding)高(gao)(gao)程(cheng)(cheng)515m,最大(da)(da)壩(ba)(ba)高(gao)(gao)96.5m,頂(ding)拱(gong)半(ban)徑172m,最大(da)(da)中心(xin)角(jiao)103.6o,壩(ba)(ba)頂(ding)弧長311m,壩(ba)(ba)頂(ding)寬6m,壩(ba)(ba)底寬27.2m。5孔泄(xie)(xie)洪表孔布置(zhi)在(zai)壩(ba)(ba)頂(ding)中部,孔口尺寸為9.0m×10.5m(寬×高(gao)(gao)),堰(yan)頂(ding)高(gao)(gao)程(cheng)(cheng)502m,設疊梁檢修閘(zha)(zha)(zha)(zha)門(men)和(he)(he)弧形工作閘(zha)(zha)(zha)(zha)門(men),采用挑(tiao)流(liu)消能(neng)。在(zai)壩(ba)(ba)內493m、478m和(he)(he)438m高(gao)(gao)程(cheng)(cheng)各布置(zhi)一(yi)條縱向廊(lang)道(dao),用于排(pai)水(shui)、觀測(檢查)、交通和(he)(he)帷幕(mu)灌漿(jiang)。 泄(xie)(xie)洪隧洞(dong)(dong)(dong)(dong)岸塔式進(jin)(jin)水(shui)口位于大(da)(da)壩(ba)(ba)左岸上游(you)約650m的嵐河彎道(dao)處。泄(xie)(xie)洪隧洞(dong)(dong)(dong)(dong)由(you)進(jin)(jin)口段(duan)(duan)、洞(dong)(dong)(dong)(dong)身段(duan)(duan)和(he)(he)出口消能(neng)段(duan)(duan)組成,全長351.85m。進(jin)(jin)口段(duan)(duan)為“龍抬頭”型式,進(jin)(jin)口底板(ban)高(gao)(gao)程(cheng)(cheng)464m,洞(dong)(dong)(dong)(dong)身段(duan)(duan)和(he)(he)消能(neng)段(duan)(duan)利用原導流(liu)洞(dong)(dong)(dong)(dong)。在(zai)進(jin)(jin)口閘(zha)(zha)(zha)(zha)室段(duan)(duan)布置(zhi)一(yi)扇平板(ban)事故(gu)檢修閘(zha)(zha)(zha)(zha)門(men)和(he)(he)一(yi)扇弧形工作閘(zha)(zha)(zha)(zha)門(men)。泄(xie)(xie)洪隧洞(dong)(dong)(dong)(dong)最大(da)(da)泄(xie)(xie)量419立方米/秒,出口采用挑(tiao)流(liu)消能(neng)。
電站主體(ti)工(gong)(gong)程于2000年5月(yue)正式開工(gong)(gong),2003年10月(yue)27日(ri)下閘蓄(xu)水,2004年5月(yue)12日(ri)3臺機組全部并網發電,2005年5月(yue)通過工(gong)(gong)程竣工(gong)(gong)驗收。