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日前，水(shui)电(dian)四局承建的河北(bei)易县(xian)抽(chou)蓄电(dian)站下水(shui)库全(quan)(quan)面完工(gong)。至此，该电(dian)站上(shang)、下水(shui)库施工(gong)任务全(quan)(quan)部完成为实(shi)现年底首台(tai)机组投产(chan)发电(dian)提供(gong)了坚实(shi)保障。

河北易县抽水(shui)(shui)(shui)(shui)蓄能电(dian)站(zhan)位于河北省保定市易县，总装机容量(liang)1200兆瓦，额(e)定水(shui)(shui)(shui)(shui)头(tou)354米(mi)，共安装4台单(dan)机容量(liang)300兆瓦的立轴单(dan)级混流可逆(ni)式(shi)水(shui)(shui)(shui)(shui)泵水(shui)(shui)(shui)(shui)轮机，属一(yi)等大（1）型(xing)工(gong)程。电(dian)站(zhan)由上水(shui)(shui)(shui)(shui)库(ku)、输水(shui)(shui)(shui)(shui)系统、地下厂房(fang)及开关站(zhan)、下水(shui)(shui)(shui)(shui)库(ku)等部分组成，水(shui)(shui)(shui)(shui)电(dian)四局承担电(dian)站(zhan)整体施工(gong)任(ren)务。

作为电(dian)站(zhan)的(de)“能量容器”，下水(shui)库(ku)(ku)主要建筑物包(bao)括大(da)坝(ba)、进出水(shui)口、溢(yi)洪道和泄洪洞(dong)等(deng)，正常蓄水(shui)位为271米，库(ku)(ku)容达(da)912.2万立方(fang)米。下水(shui)库(ku)(ku)大(da)坝(ba)采用混凝土(tu)面板堆石坝(ba)设(she)计，填筑总量达(da)91.36万立方(fang)米。

上(shang)水库(ku)主坝(ba)(ba)坝(ba)(ba)顶(ding)高(gao)程(cheng)638.5米(mi)(mi)，最大(da)坝(ba)(ba)高(gao)90.5米(mi)(mi)，坝(ba)(ba)轴线长458.0米(mi)(mi)，坝(ba)(ba)顶(ding)宽度为(wei)10.0米(mi)(mi)。对于上(shang)水库(ku)中(zhong)至(zhi)关重要的沥青(qing)防渗面(mian)板工(gong)(gong)(gong)程(cheng)，项目管理团队多(duo)(duo)次组织工(gong)(gong)(gong)艺性(xing)试验，力求精准确定(ding)施(shi)工(gong)(gong)(gong)参数，对沥青(qing)混(hun)凝(ning)(ning)土(tu)从拌合、运输、摊(tan)铺(pu)、碾(nian)压(ya)到检测都进行了严格的监(jian)控，确保每一步(bu)都符合高(gao)标准，以(yi)保障工(gong)(gong)(gong)程(cheng)的整体质量和施(shi)工(gong)(gong)(gong)效(xiao)率。在沥青(qing)混(hun)凝(ning)(ning)土(tu)斜坡碾(nian)压(ya)施(shi)工(gong)(gong)(gong)中(zhong)，运用(yong)集成化设备系统(tong)，进行流水施(shi)工(gong)(gong)(gong)，解决了多(duo)(duo)种设备多(duo)(duo)工(gong)(gong)(gong)序施(shi)工(gong)(gong)(gong)过程(cheng)中(zhong)安全性(xing)、可(ke)靠性(xing)低、进度慢(man)、协调复杂等难题，性(xing)能(neng)优于国(guo)内外(wai)同种工(gong)(gong)(gong)艺装置，同比节约施(shi)工(gong)(gong)(gong)时间20%，且电(dian)站采用(yong)的“全库(ku)盆沥青(qing)混(hun)凝(ning)(ning)土(tu)防渗施(shi)工(gong)(gong)(gong)”为(wei)中(zhong)国(guo)电(dian)建(jian)首例。

目前，电(dian)(dian)(dian)站(zhan)建设进入全(quan)(quan)面冲刺阶段，正在全(quan)(quan)力推(tui)进机组安装与调(diao)试工作(zuo)。据悉，该电(dian)(dian)(dian)站(zhan)建成(cheng)后(hou)供电(dian)(dian)(dian)范(fan)围(wei)为河北(bei)南(nan)网(wang)，在系统中承担调(diao)峰(feng)、填谷、调(diao)频(pin)、调(diao)相(xiang)、紧急事故备用等(deng)任务(wu)，对提高(gao)河北(bei)南(nan)部电(dian)(dian)(dian)网(wang)调(diao)峰(feng)能力，优化电(dian)(dian)(dian)源(yuan)结构，支撑(cheng)雄安新区(qu)智能电(dian)(dian)(dian)网(wang)建设起(qi)到重要作(zuo)用。