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不(bu)(bu)銹鋼攔(lan)(lan)(lan)污(wu)柵(zha)(zha)(zha)(zha)設在進水(shui)(shui)口前，用(yong)(yong)于攔(lan)(lan)(lan)阻水(shui)(shui)流挾帶的(de)(de)水(shui)(shui)草、漂木等雜物(wu)(wu)（一般(ban)稱污(wu)物(wu)(wu)）的(de)(de)框柵(zha)(zha)(zha)(zha)式結構。攔(lan)(lan)(lan)污(wu)柵(zha)(zha)(zha)(zha)由邊框、橫隔板(ban)和柵(zha)(zha)(zha)(zha)條構成，支(zhi)承(cheng)在混凝土(tu)墩墻(qiang)上，一般(ban)用(yong)(yong)不(bu)(bu)銹鋼制造。柵(zha)(zha)(zha)(zha)條間(jian)(jian)距(ju)視污(wu)物(wu)(wu)大(da)小、多少和運用(yong)(yong)要求(qiu)而定(ding)。水(shui)(shui)電站用(yong)(yong)的(de)(de)柵(zha)(zha)(zha)(zha)條間(jian)(jian)距(ju)取決于水(shui)(shui)輪機型號及尺寸，以保(bao)證通(tong)過(guo)攔(lan)(lan)(lan)污(wu)柵(zha)(zha)(zha)(zha)的(de)(de)污(wu)物(wu)(wu)不(bu)(bu)會卡在水(shui)(shui)輪機過(guo)流部(bu)件中為(wei)準。泄(xie)水(shui)(shui)隧洞和泄(xie)水(shui)(shui)孔(kong)一般(ban)不(bu)(bu)設攔(lan)(lan)(lan)污(wu)柵(zha)(zha)(zha)(zha)，如洞徑或孔(kong)徑不(bu)(bu)大(da)，而沉木較多需要設置時，柵(zha)(zha)(zha)(zha)條間(jian)(jian)距(ju)宜加大(da)。