芒果视频下载

馬(ma)馬(ma)崖一(yi)(yi)級水(shui)電(dian)(dian)站(zhan)為北盤江干流（茅口以下(xia)）規(gui)劃(hua)梯級的第二級，屬二等大(2)型工(gong)程(cheng)，樞紐(niu)工(gong)程(cheng)由碾壓(ya)混凝(ning)土重力壩(ba)(ba)、壩(ba)(ba)身開(kai)敞(chang)式溢(yi)流表孔(kong)、壩(ba)(ba)身放空底(di)孔(kong)、左岸引(yin)水(shui)系統及左岸地下(xia)廠房(fang)等主要建(jian)筑物組(zu)(zu)成(cheng)。工(gong)程(cheng)任務(wu)以發(fa)(fa)電(dian)(dian)為主，航運次之(zhi)。壩(ba)(ba)址控制流域(yu)面積16068平(ping)方(fang)公里，多年(nian)(nian)平(ping)均流量(liang)307立(li)方(fang)米/秒(miao)。水(shui)庫(ku)(ku)正常蓄水(shui)位585m，相(xiang)應庫(ku)(ku)容(rong)1.365億立(li)方(fang)米，死水(shui)位580m，調節庫(ku)(ku)容(rong) 0.731億立(li)方(fang)米，水(shui)庫(ku)(ku)具有日調節性能。電(dian)(dian)站(zhan)裝機(ji)(ji)容(rong)量(liang)558MW，安(an)裝三臺單機(ji)(ji)容(rong)量(liang)為180MW的水(shui)輪發(fa)(fa)電(dian)(dian)機(ji)(ji)組(zu)(zu)和一(yi)(yi)臺容(rong)量(liang)18MW的生態流量(liang)機(ji)(ji)組(zu)(zu)，電(dian)(dian)站(zhan)保證出力97MW，年(nian)(nian)利(li)用小時(shi)2797h，年(nian)(nian)發(fa)(fa)電(dian)(dian)量(liang)15.61億kW·h。

地理交通

（1）對外交(jiao)通條件

馬(ma)馬(ma)崖一級(ji)(ji)水(shui)電站(zhan)距貴(gui)(gui)陽市公(gong)路(lu)里(li)(li)程207km，距六盤水(shui)市203km，距興(xing)義(yi)市140km。電站(zhan)附近現有(you)S210省(sheng)(sheng)道及貴(gui)(gui)昆(kun)(kun)和(he)南(nan)昆(kun)(kun)二條(tiao)鐵路(lu)通(tong)過，對外(wai)交通(tong)十分便利，鐵路(lu)運輸物資(zi)轉運站(zhan)可(ke)設(she)在較近的(de)貴(gui)(gui)昆(kun)(kun)線上(shang)的(de)么鋪(pu)站(zhan)和(he)南(nan)昆(kun)(kun)線上(shang)的(de)頂效站(zhan)。壩(ba)址左(zuo)岸尖山目前有(you)修筑到花江鎮(zhen)的(de)三級(ji)(ji)公(gong)路(lu)，公(gong)路(lu)里(li)(li)程約17km；壩(ba)址右岸目前興(xing)仁(ren)縣從S309省(sheng)(sheng)道接口至岔路(lu)口，岔路(lu)口—新馬(ma)場(chang)鄉(xiang)為四級(ji)(ji)公(gong)路(lu)，公(gong)路(lu)里(li)(li)程約14km，新馬(ma)場(chang)到補(bu)朗有(you)鄉(xiang)村簡易公(gong)路(lu)，公(gong)路(lu)里(li)(li)程約18km。

（2）場(chang)內交通條件

工(gong)程(cheng)場(chang)內(nei)(nei)交(jiao)通(tong)(tong)以左(zuo)、右岸(an)干線(xian)(xian)公路為主(zhu)(zhu)，以大(da)壩、引水系統和廠房等主(zhu)(zhu)體(ti)工(gong)程(cheng)的開(kai)挖出渣、壩體(ti)混(hun)凝土澆筑通(tong)(tong)道(dao)為交(jiao)通(tong)(tong)主(zhu)(zhu)線(xian)(xian)，石料場(chang)開(kai)采及毛料的運輸以及主(zhu)(zhu)要(yao)工(gong)廠與主(zhu)(zhu)體(ti)工(gong)程(cheng)的銜(xian)接(jie)為交(jiao)通(tong)(tong)輔線(xian)(xian)進行場(chang)內(nei)(nei)施工(gong)道(dao)路布置，其余部位(wei)根據施工(gong)工(gong)作面(mian)需(xu)要(yao)由施工(gong)主(zhu)(zhu)線(xian)(xian)接(jie)支線(xian)(xian)布置，左(zuo)、右岸(an)交(jiao)通(tong)(tong)通(tong)(tong)過上游臨(lin)時(shi)橋和下(xia)游永久(jiu)橋連接(jie)，使整個工(gong)區形成一個封閉(bi)的環行系統，場(chang)內(nei)(nei)交(jiao)通(tong)(tong)已(yi)(yi)形成，下(xia)游永久(jiu)大(da)橋已(yi)(yi)通(tong)(tong)車。

左岸干(gan)(gan)線(xian)公(gong)路(lu)長9.6km，混凝土路(lu)面；右岸干(gan)(gan)線(xian)公(gong)路(lu)長4.6km，碎石(shi)泥結石(shi)路(lu)面；永久跨河橋在壩軸(zhou)線(xian)下游約980m處，跨度134m，橋面高程(cheng)555m，雙(shuang)向(xiang)行車；上(shang)(shang)游臨時(shi)橋橋面高程(cheng)561m，橋長142m，在壩軸(zhou)線(xian)上(shang)(shang)游640m，目(mu)前正在建設。

電站建設

馬馬崖一級(ji)水(shui)(shui)電(dian)(dian)站(zhan)位于北(bei)盤江中(zhong)(zhong)(zhong)下游，為(wei)二(er)等(deng)大（2）型(xing)工(gong)(gong)(gong)程，電(dian)(dian)站(zhan)裝機(ji)3臺(tai)，上下游分別有光(guang)照水(shui)(shui)電(dian)(dian)站(zhan)、規(gui)劃的馬馬崖二(er)級(ji)水(shui)(shui)電(dian)(dian)站(zhan)和(he)已經投產發(fa)(fa)電(dian)(dian)的董箐(qing)水(shui)(shui)電(dian)(dian)站(zhan)。初步預計，馬馬崖一級(ji)水(shui)(shui)電(dian)(dian)站(zhan)工(gong)(gong)(gong)程將(jiang)于2011年(nian)(nian)11月中(zhong)(zhong)(zhong)旬實現大江截留，2013年(nian)(nian)10月下閘蓄水(shui)(shui)，2013年(nian)(nian)年(nian)(nian)底首臺(tai)機(ji)組(zu)發(fa)(fa)電(dian)(dian)，2014年(nian)(nian)3月第二(er)臺(tai)機(ji)組(zu)發(fa)(fa)電(dian)(dian)，2014年(nian)(nian)6月基本完建。考(kao)慮到今后下游董箐(qing)梯(ti)級(ji)的開發(fa)(fa)，擬將(jiang)大型(xing)修配(pei)系統、木材加(jia)工(gong)(gong)(gong)廠、鋼筋加(jia)工(gong)(gong)(gong)廠、中(zhong)(zhong)(zhong)心倉庫、家屬(shu)生活區等(deng)布(bu)置(zhi)在附近的緩坡地上作為(wei)基地，距(ju)壩(ba)址(zhi)公路(lu)里程約(yue)為(wei)15 km，壩(ba)址(zhi)附近只布(bu)置(zhi)砂石系統、拌(ban)合系統、機(ji)修站(zhan)和(he)汽車保(bao)養站(zhan)、風(feng)、水(shui)(shui)、電(dian)(dian)、小倉庫、單身宿舍(she)等(deng)作為(wei)施工(gong)(gong)(gong)前(qian)方(fang)。

為(wei)溝(gou)通兩岸交通，擬在壩(ba)址上下游各建一(yi)施工索(suo)(suo)橋，索(suo)(suo)橋按汽-15、掛(gua)-80荷(he)載(zai)設置。

采石(shi)場及砂石(shi)系統均布置在河(he)床右岸(an)，設計生產能力為250t/h，混(hun)凝土(tu)系統布置在右岸(an)。

建設期(qi)間，施(shi)工用電負(fu)荷約1萬kW，擬從普定變電站接線(xian)，線(xian)路(lu)長72 km。

考慮(lv)(lv)上(shang)(shang)游光照(zhao)電(dian)(dian)站屆時已建成水庫的多年調節能(neng)力，馬馬岸電(dian)(dian)站在建期間全年施工，導(dao)流(liu)流(liu)量(liang)按光照(zhao)電(dian)(dian)站三臺機(ji)組滿發(fa)流(liu)量(liang)582立方米(mi)/秒加兩電(dian)(dian)站之(zhi)間集水流(liu)量(liang)考慮(lv)(lv)，采用(yong)隧(sui)洞(dong)(dong)導(dao)流(liu)，隧(sui)洞(dong)(dong)斷面(mian)為10×12 m的城門洞(dong)(dong)型(xing)，長約650 m。上(shang)(shang)下游均設不過水土石(shi)圍堰，混(hun)凝(ning)土壩(ba)采用(yong)滿管澆筑(zhu)，平(ping)均月澆筑(zhu)強度3.6萬立方米(mi)；引水隧(sui)洞(dong)(dong)及地下廠(chang)房交(jiao)通洞(dong)(dong)采用(yong)多臂鉆全斷面(mian)開(kai)挖，鋼模臺車澆混(hun)凝(ning)土，廠(chang)房采用(yong)多臂鉆和潛孔鉆開(kai)挖。

施(shi)工(gong)總工(gong)期為6年(nian)，第(di)(di)一臺機(ji)(ji)組在第(di)(di)5年(nian)年(nian)底(di)發電，其(qi)他三臺機(ji)(ji)組均在第(di)(di)6年(nian)內組裝發電。月平(ping)均最大施(shi)工(gong)強度為：土石方開(kai)挖5.6萬(wan)立方米(mi)，砼(tong)澆筑4.0萬(wan)立方米(mi)。

大壩建設

壩體結構

碾壓混凝(ning)土(tu)重力壩(ba)(ba)最大壩(ba)(ba)高(gao)109m，壩(ba)(ba)頂高(gao)程(cheng)592.00m，壩(ba)(ba)頂全長247.20m。在河床溢流(liu)(liu)壩(ba)(ba)段(duan)設(she)3孔(kong)14.5×19m（寬(kuan)×高(gao)）的(de)溢流(liu)(liu)表(biao)孔(kong)，堰頂高(gao)程(cheng)566.00m。廠房布(bu)(bu)置(zhi)在左(zuo)岸(an)山體(ti)內，為地(di)下廠房，建(jian)筑物主要由主廠房、副廠房、主變洞(dong)(dong)、母線洞(dong)(dong)、出線平(ping)洞(dong)(dong)、出線豎井、通(tong)風洞(dong)(dong)、排水廊道(dao)(dao)、廠變交(jiao)通(tong)洞(dong)(dong)、主變交(jiao)通(tong)洞(dong)(dong)、交(jiao)通(tong)廊道(dao)(dao)等地(di)下洞(dong)(dong)室和地(di)面式出線站(zhan)及中控樓(lou)組成(cheng)。廠房尺寸140.5m×24.9m×62.8m（長×寬(kuan)×高(gao)）。引(yin)(yin)水系統布(bu)(bu)置(zhi)于左(zuo)岸(an)，采用一洞(dong)(dong)一機供水方(fang)式，單機引(yin)(yin)用流(liu)(liu)量297.5立方(fang)米(mi)/秒。壩(ba)(ba)身式進水口，三條(tiao)引(yin)(yin)水隧(sui)洞(dong)(dong)平(ping)均長265.30m，洞(dong)(dong)徑9.75m，壓力鋼管平(ping)均長45m，內徑8m。壓力鋼管與地(di)下廠房邊墻成(cheng)75°交(jiao)角，斜向進入廠房。尾水隧(sui)洞(dong)(dong)平(ping)均長約80m，斷面為9.5m×15.24m城(cheng)門洞(dong)(dong)型。

施工導流

工程(cheng)采用斷(duan)流(liu)(liu)圍(wei)堰(yan)(yan)(yan)(yan)(yan)、隧洞(dong)(dong)(dong)導(dao)(dao)(dao)流(liu)(liu)的導(dao)(dao)(dao)流(liu)(liu)方式(shi)，導(dao)(dao)(dao)流(liu)(liu)設計標準(zhun)為(wei)10年(nian)一遇重現(xian)期(qi)洪水，流(liu)(liu)量為(wei)Q10%=1180立(li)方米(mi)/秒，枯期(qi)時段為(wei)11月(yue)6日(ri)～次年(nian)5月(yue)15日(ri)。右岸布置(zhi)導(dao)(dao)(dao)流(liu)(liu)隧洞(dong)(dong)(dong)1條(tiao)，導(dao)(dao)(dao)流(liu)(liu)隧洞(dong)(dong)(dong)過流(liu)(liu)斷(duan)面(mian)尺(chi)寸11×12m（寬×高），右岸導(dao)(dao)(dao)流(liu)(liu)隧洞(dong)(dong)(dong)進出(chu)口高程(cheng)分(fen)別為(wei)508m、506m。導(dao)(dao)(dao)流(liu)(liu)洞(dong)(dong)(dong)長(chang)度(du)為(wei)648.91，下游布置(zhi)一條(tiao)施工支洞(dong)(dong)(dong)，施工支洞(dong)(dong)(dong)長(chang)約(yue)(yue)(yue)323.68m。上游圍(wei)堰(yan)(yan)(yan)(yan)(yan)堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)高程(cheng)522.6m，河床底高程(cheng)503.5 m，最大堰(yan)(yan)(yan)(yan)(yan)高19.1 m，堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)長(chang)68.1m，堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)寬16.0m，堰(yan)(yan)(yan)(yan)(yan)基覆蓋層深度(du)約(yue)(yue)(yue)10m。上游圍(wei)堰(yan)(yan)(yan)(yan)(yan)子堰(yan)(yan)(yan)(yan)(yan)堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)高程(cheng)527.6m，最大堰(yan)(yan)(yan)(yan)(yan)高5.0m，堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)長(chang)84.6m，堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)寬3.5m。下游圍(wei)堰(yan)(yan)(yan)(yan)(yan)堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)高程(cheng)518.0m，河床底高程(cheng)502.8m，最大堰(yan)(yan)(yan)(yan)(yan)高15.2m，堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)長(chang)55.25m，堰(yan)(yan)(yan)(yan)(yan)頂(ding)(ding)(ding)(ding)寬10.0m，堰(yan)(yan)(yan)(yan)(yan)基覆蓋層深度(du)約(yue)(yue)(yue)10m。

大壩建筑物及引水(shui)發電系統

攔河(he)大(da)壩(ba)(ba)(ba)(ba)為(wei)(wei)碾(nian)(nian)壓(ya)混凝土重(zhong)力壩(ba)(ba)(ba)(ba)，壩(ba)(ba)(ba)(ba)頂(ding)(ding)高程592.00m，壩(ba)(ba)(ba)(ba)底(di)高程483.00m，壩(ba)(ba)(ba)(ba)高109.00m。壩(ba)(ba)(ba)(ba)頂(ding)(ding)寬(kuan)12m，擋水壩(ba)(ba)(ba)(ba)段下(xia)游坡比為(wei)(wei)1:0.75，溢流(liu)壩(ba)(ba)(ba)(ba)段最大(da)壩(ba)(ba)(ba)(ba)底(di)寬(kuan)為(wei)(wei)100.50m。壩(ba)(ba)(ba)(ba)頂(ding)(ding)軸線(xian)長度(du)為(wei)(wei)247.20m，在河(he)床溢流(liu)壩(ba)(ba)(ba)(ba)段設3孔14.5×19m（寬(kuan)×高）的溢流(liu)表孔，堰頂(ding)(ding)高程566m，采用WES曲線(xian)。下(xia)接“X”型寬(kuan)尾(wei)墩+臺階(jie)壩(ba)(ba)(ba)(ba)面(mian)+戽式消力池。消力池池長60m，底(di)寬(kuan)51.50m，底(di)板(ban)頂(ding)(ding)高程493.00m，底(di)板(ban)厚3m。壩(ba)(ba)(ba)(ba)軸線(xian)方位角為(wei)(wei)N46.89E。壩(ba)(ba)(ba)(ba)體大(da)體積混凝土為(wei)(wei)C15三級配碾(nian)(nian)壓(ya)混凝土，壩(ba)(ba)(ba)(ba)體上游面(mian)采用C20二級配碾(nian)(nian)壓(ya)混凝土自身防滲(shen)。

壩體基(ji)本剖面上游(you)壩坡525m高(gao)程(cheng)以上垂直，525m高(gao)程(cheng)至壩基(ji)為(wei)1：0.25；下游(you)壩坡為(wei)1：0.75，折坡點(dian)高(gao)程(cheng)為(wei)579.46m。

溢流(liu)(liu)表孔(kong)單孔(kong)最大下泄流(liu)(liu)量3622立方(fang)米/秒，最大單寬流(liu)(liu)量249.79立方(fang)米/秒 ，3孔(kong)共用(yong)一扇14.5m×20m的(de)平板檢修閘門(men)(men)，檢修門(men)(men)以門(men)(men)機啟(qi)閉，弧(hu)門(men)(men)采(cai)用(yong)液(ye)壓啟(qi)閉機啟(qi)閉，用(yong)牛(niu)腿作(zuo)弧(hu)門(men)(men)支承和(he)用(yong)橫(heng)梁(liang)作(zuo)閘墩間橫(heng)向聯系。溢流(liu)(liu)堰(yan)(yan)面(mian)按冪曲線y = y=0.0400351x，下接1：0.82的(de)斜坡(po)段(duan)作(zuo)為臺階面(mian)的(de)摻氣挑檻，與下游壩坡(po)1：0.75相接，溢流(liu)(liu)堰(yan)(yan)原點(dian)上(shang)(shang)游用(yong)三園弧(hu)與上(shang)(shang)游坡(po)相接；下游采(cai)用(yong)"X”型寬尾墩和(he)臺階溢流(liu)(liu)面(mian)+戽式(shi)消力池的(de)消能方(fang)式(shi)。校核洪水情況的(de)總下泄流(liu)(liu)量為10866立方(fang)米/秒。

引(yin)(yin)水(shui)(shui)系統布置(zhi)于(yu)左岸岸邊，采用(yong)一洞一機(ji)供水(shui)(shui)方(fang)式，由引(yin)(yin)水(shui)(shui)渠、壩身式進水(shui)(shui)塔、混凝土(tu)漸變段(duan)、隧洞上下(xia)平段(duan)、豎井段(duan)和壓力(li)鋼管組成，通過三條壓力(li)鋼管單元引(yin)(yin)水(shui)(shui)至發電廠(chang)房(fang)，單機(ji)引(yin)(yin)用(yong)流(liu)量297.5立方(fang)米/秒。

進(jin)水(shui)口(kou)為(wei)(wei)壩身式進(jin)水(shui)口(kou)，三臺機進(jin)水(shui)口(kou)呈“一(yi)”字型并排布(bu)置，進(jin)水(shui)口(kou)前沿(yan)總寬度為(wei)(wei)75.20m，進(jin)口(kou)底板高(gao)(gao)程為(wei)(wei)549.00m，壩身頂高(gao)(gao)程為(wei)(wei)592.00m，設一(yi)道檢(jian)修門(men)和一(yi)道快(kuai)速事故(gu)門(men)。檢(jian)修閘門(men)孔口(kou)尺(chi)寸(cun)3—8.5×10m（扇-寬×高(gao)(gao)），快(kuai)速事故(gu)門(men)孔口(kou)尺(chi)寸(cun)3—8.5×9.75m（扇-寬×高(gao)(gao)）。

三條(tiao)引(yin)水(shui)(shui)隧(sui)洞平行布置，主要穿越T2g地層，隧(sui)洞軸(zhou)線距離為(wei)24.5m，沿程大部分埋深50m～170m左右，軸(zhou)線方位由NE78.89º通過(guo)豎(shu)井轉為(wei)方位SE26.00º，縱坡I=4%。隧(sui)洞洞徑(jing)9.75m，采用鋼筋混凝土(tu)襯砌(qi)，襯厚0.8m，最(zui)大流速4.07m/s，1號～3號引(yin)水(shui)(shui)隧(sui)洞長度(du)分別(bie)223.632m、265.173m、307.127m。

尾(wei)(wei)(wei)水(shui)(shui)系統采(cai)用(yong)一洞(dong)一機(ji)出(chu)(chu)水(shui)(shui)方式，由尾(wei)(wei)(wei)水(shui)(shui)隧(sui)(sui)(sui)洞(dong)和(he)尾(wei)(wei)(wei)水(shui)(shui)出(chu)(chu)口閘(zha)(zha)室(shi)組(zu)成(cheng)。沿(yan)程埋深在30m～135m左右(you)，洞(dong)內(nei)最(zui)大流速(su)2.23m/s。1號(hao)～3號(hao)尾(wei)(wei)(wei)水(shui)(shui)隧(sui)(sui)(sui)洞(dong)長分別為(wei)(wei)56.044m，80.349m，104.71m。采(cai)用(yong)C20鋼筋混凝土襯砌，襯砌厚度(du)為(wei)(wei)1.0m。尾(wei)(wei)(wei)水(shui)(shui)隧(sui)(sui)(sui)洞(dong)出(chu)(chu)口設尾(wei)(wei)(wei)水(shui)(shui)閘(zha)(zha)室(shi)，閘(zha)(zha)室(shi)內(nei)設一道工作(zuo)閘(zha)(zha)門(men)，閘(zha)(zha)門(men)孔口尺(chi)寸為(wei)(wei)9.5m×12.5m（寬×高）。閘(zha)(zha)底板高程為(wei)(wei)488m，尾(wei)(wei)(wei)水(shui)(shui)出(chu)(chu)口塔(ta)頂(ding)高程為(wei)(wei)540.50m。

地(di)下(xia)廠房(fang)洞(dong)(dong)室群布(bu)置于大壩左岸山(shan)體內，采用主(zhu)(zhu)廠房(fang)、主(zhu)(zhu)變洞(dong)(dong)兩(liang)大洞(dong)(dong)室平行(xing)布(bu)置的方式，廠房(fang)縱(zong)軸線方位為(wei)N79ºE，廠區樞紐建筑物主(zhu)(zhu)要由主(zhu)(zhu)廠房(fang)、副廠房(fang)、主(zhu)(zhu)變洞(dong)(dong)、母線洞(dong)(dong)、出(chu)線平洞(dong)(dong)、出(chu)線豎井、通風洞(dong)(dong)、排水廊道、廠變交(jiao)通洞(dong)(dong)、主(zhu)(zhu)變交(jiao)通洞(dong)(dong)、廠變交(jiao)通廊道等地(di)下(xia)洞(dong)(dong)室和地(di)面(mian)開(kai)關站組成(cheng)。

主廠(chang)房(fang)由(you)主機間(jian)和安(an)裝間(jian)組成，之間(jian)設2cm寬永久伸縮縫，廠(chang)房(fang)尺寸(cun)140.5m×24.9m×62.8m（長×寬×高(gao)），吊車梁以(yi)上開挖跨(kua)度(du)24.9m，以(yi)下(xia)23.3m，凈跨(kua)22.0m。廠(chang)內(nei)安(an)裝一臺2×325/50t的雙小車橋(qiao)式起重機，布置于巖(yan)壁(bi)吊車梁上，吊車軌頂高(gao)程531.00m，跨(kua)度(du)22.0m。

副廠房位于主(zhu)機間(jian)右側(ce)，長19m，凈寬(kuan)與主(zhu)機間(jian)同寬(kuan)為22m。

母(mu)線(xian)(xian)(xian)洞(dong)(dong)作(zuo)為連(lian)接(jie)主(zhu)(zhu)機(ji)間與主(zhu)(zhu)變室的(de)主(zhu)(zhu)要電(dian)纜通道及設(she)備布置場地，共布置三條(tiao)，每臺機(ji)組一條(tiao)。根據機(ji)電(dian)設(she)備布置的(de)要求(qiu)，母(mu)線(xian)(xian)(xian)洞(dong)(dong)底板高程為511.80m，與主(zhu)(zhu)機(ji)間出(chu)線(xian)(xian)(xian)層同高，凈斷(duan)面尺寸為7m×6.5m（寬×高），城(cheng)門洞(dong)(dong)型(xing)，長度(du)均(jun)為40m，三條(tiao)母(mu)線(xian)(xian)(xian)洞(dong)(dong)中心距為24.5m。母(mu)線(xian)(xian)(xian)洞(dong)(dong)內主(zhu)(zhu)要布置高壓(ya)(ya)廠用變、高壓(ya)(ya)開(kai)關柜(ju)、斷(duan)路(lu)器、離相封閉母(mu)線(xian)(xian)(xian)、PT柜(ju)及電(dian)纜等，并兼作(zuo)主(zhu)(zhu)廠房(fang)的(de)排風通道。

主變洞位于(yu)主廠房下游側40.0m處，與主廠房平行(xing)布置，斷面尺寸(cun)80.0m×15.3m×16.2m（長×寬×高），至下而(er)上共分(fen)為(wei)二(er)層。

地(di)面開關站布(bu)置(zhi)(zhi)于(yu)主變洞頂(ding)上的地(di)面緩(huan)坡(po)地(di)帶(dai)，距壩軸線150m左右，底板(ban)高(gao)程(cheng)605.30m，平面尺寸(cun)(cun)80.0m×28.0m（長(chang)(chang)×寬(kuan)），主要(yao)布(bu)置(zhi)(zhi)GIS樓(lou)、中控樓(lou)及(ji)出線設備等，GIS樓(lou)尺寸(cun)(cun)為35.0×15.0×21.9（長(chang)(chang)×寬(kuan)×高(gao)），中控樓(lou)尺寸(cun)(cun)為30.0×15.0×15.0（長(chang)(chang)×寬(kuan)×高(gao)），出線塔(ta)架(jia)布(bu)置(zhi)(zhi)于(yu)GIS樓(lou)屋頂(ding)。開關站有(you)永久(jiu)(jiu)公路通過，公路一端接下游永久(jiu)(jiu)大橋，另一端接左壩肩及(ji)進水口，途經廠壩電梯井(jing)。