明渠排污口整治规范.doc

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1、明渠堰槽排污口整治规范排放口几何尺寸表单位：mm尺寸排放量渠长L≥渠宽B≥渠高D≥堰宽b≥L1L2L3hmax≥堰坎P≥50m3/h2100320400125500820380160100m3/h26004205001807001020480210150m3/h30005006002008001250550250200m3/h33006007502409001400600300300m3/h380068085028010001700700340400m3/h440080090035011002150750360500m3/h4800850900400120024008004006

2、00m3/h5000900100045012502500850420800m3/h52009501100550130026009004501000m3/h540010001200600135027009505001500m3/h6000110013007501500310010005502000m3/h650012001400900160033001200600说明:1、堰槽类型选择可依据流量范围确定：333一般三角堰为2-280m矩形堰为15-540m等宽堰为30-4000m/h2、堰宽b由渠宽B0.4≤b≤B，三角堰无效3、堰坎高度P要视下游可能出现最高水位H'而定,一般要求

3、P≥H',保证自由出流尺寸排放量渠长L≥渠宽B≥渠高D≥堰宽b≥L1LLOh1h2NP50m3/h15003204507625915231122027757100m3/h2200460600152400305415300414114150m3/h3000635650228575305587350464114200m3/h4000840750250780600900400630230300m3/h4500900750300840600920400630230400m3/h500010808004501020600967400630230500m3/h6000126080060012

4、006001020400630230600m3/h7000144085075013806001074450680230800m3/h80001620850900156060011214506802301000m3/h850017408501000168060011614506802301500m3/h1000019808501200192060012274506802302000m3/h110002340850150022806001329450680230说明:基昨高度P尺寸视下游水位而定,一般要求P≥下游水位