閘門水封又稱p型橡膠止水帶，閘門水封是水電工程閘門的一個重要組成部分，是保證閘門密閉封水、zhengchangyunxingdeguanjianbujian。zhamenshuifengcailiaokeyigenjushuitougaodihekongkoudaxiaodengjutitiaojianjinxingxuanze，zuichangyongdemoguoyuxiangjiaozhamenshuifeng。xiangjiaozhamenshuifengyoumingzhishuixiangpihuozhezhishuixiangjiao，tadeyoudianshidanxinghao，shiyingbianxingnengliqiang
；結構簡單、封水嚴密可靠；比較經濟
，安裝更換簡便耐老化，使用壽命較長。

從水封材質分:橡膠水封是由天然橡膠(或合成橡膠)通過煉膠設備(開放式煉膠機或密煉機)分段塑煉後，混入專用防老劑、硫化促進劑、硫化助劑、補強劑

、增塑劑等十多種原料後製得半成品混煉膠

，再置於一定型腔的模具中，經硫化壓機於高溫、高壓條件下而製得的符合水工鋼閘門止水綜合要求的止水元件,俗稱普通水封。將低摩阻、gaonaimodezengqiangjusifuyixibomofuheyushuifengzhishuigongzuomianzechengzhiweixiangsufuheshuifeng，gongzuomianshangdezengqiangjusifuyixibomoweibujianduanbufenduandezhengti，hegongzuomianjinxingzengqiangjusifuyixitucengdeshuifengchengweiwujiexingxiangsufuheshuifeng
以型式分為常規水封、壓緊型水封
、液壓伸縮水封。

閘門水封是shi閘zha門men最zui重zhong要yao的de部bu件jian之zhi一yi。水shui封feng的de作zuo用yong就jiu是shi封feng水shui，即ji在zai閘zha門men關guan閉bi後hou堵du塞sai門men體ti與yu門men孔kong周zhou邊bian的de空kong隙xi，以yi阻zu止zhi閘zha孔kong漏lou水shui。封feng水shui不bu嚴yan會hui使shi水shui庫ku有you滲shen漏lou損sun失shi，造zao成cheng水shui資zi源yuan的de浪lang費fei

，從cong而er減jian少shao枯ku水shui期qi電dian站zhan的de發fa電dian量liang
、水shui庫ku的de灌guan溉gai量liang。如ru果guo施shi工gong期qi用yong的de閘zha門men水shui封feng封feng水shui效xiao果guo不bu好hao，則ze會hui影ying響xiang施shi工gong進jin度du及ji質zhi量liang。檢jian修xiu閘zha門men漏lou水shui會hui造zao成cheng檢jian修xiu區qu排pai水shui困kun難nan，影ying響xiang工gong程cheng檢jian修xiu。在zai低di溫wen情qing況kuang下xia漏lou水shui

，會hui使shi閘zha門men結jie冰bing，導dao致zhi啟qi閉bi操cao作zuo困kun難nan，影ying響xiang工gong程cheng的de安an全quan運yun行xing。對dui於yu高gao水shui頭tou閘zha門men
，水shui封feng裝zhuang置zhi更geng為wei重zhong要yao，因yin為wei水shui封feng止zhi水shui元yuan件jian與yu門men體ti止zhi水shui麵mian之zhi間jian若ruo存cun在zai縫feng隙xi，或huo水shui封feng結jie構gou有you缺que陷xian，關guan閉bi後hou或huo運yun行xing時shi均jun可ke能neng使shi閘zha門men產chan生sheng劇ju烈lie振zhen動dong
；啟閉過程中門頂漏水也會影響啟閉機操作人員的工作和安全
；並(bing)會(hui)使(shi)閘(zha)門(men)與(yu)埋(mai)件(jian)產(chan)生(sheng)空(kong)蝕(shi)和(he)磨(mo)損(sun)乃(nai)至(zhi)破(po)壞(huai)，從(cong)而(er)威(wei)脅(xie)整(zheng)個(ge)水(shui)工(gong)建(jian)築(zhu)物(wu)的(de)安(an)全(quan)。此(ci)外(wai)，水(shui)頭(tou)越(yue)高(gao)，漏(lou)水(shui)量(liang)越(yue)大(da)。可(ke)見(jian)，高(gao)壓(ya)閘(zha)門(men)水(shui)封(feng)對(dui)閘(zha)門(men)乃(nai)至(zhi)整(zheng)個(ge)水(shui)工(gong)建(jian)築(zhu)物(wu)具(ju)有(you)重(zhong)要(yao)的(de)經(jing)濟(ji)與(yu)安(an)全(quan)作(zuo)用(yong)。