CJT 3008.1-1993 城市排水流堰槽测标准三角形薄壁堰

中华人民共和国城镇建设行业标准城市排水流量堰槽测量标准三角形薄壁堰CJ/T3008.1—1993Standardsformunicipalwastewaterdischargemeasurement—Triangularnotch(Vnotch)thin-plateweir本标准制订参照了国际标准(ISO)1438/1:1980《应用薄壁堰和文杜里水槽在明渠中测流》、(ISO)4373:1979《明渠水流测量——水位测量设备》和(ISO)772:1988《明渠水流测量词汇和符号》。1主题内容与适用范面本标准规定了三角形薄壁堰的术语、结构、流量公式、制作、安装、水头测量、综合误差分析及维护本标准适用于水温为5～30℃、流量为0.3～100L/s的城市生活污水、工业废水和雨水的明渠排水流量测量。本标准的测量精度为1%～2%。供水明渠的流量测量可参照使用。本标准不适用于含有大量漂浮物质和易淤积物质的排水流量测量。2引用标准GBJ95水文测验术语和符号标准3术语3.1导流板baffle为改善水流条件，在行近渠道中设置的档板。3.2钩形测针hookgauge(gage)主要测量部件为一针形细钩。测针上端的刻度为零，自上向下刻度读数逐渐增加，见图1和图3。3.3针形测针pointgauge(gage)主要部件是一根针形测杆。测针上端刻度为零，自上向下刻度读数逐渐增加，见图2和图3。图中华人民共和国建设部1993-05-03批准1993-10-01实施CJ/T3008.1—19937.5mm0.25mm0.25mm2mm图3测针的针尖和针钩具有精确基面的固定金属板，用以测量水位。3.5亚临界流sub-critical弗汝德数小于1的水流。在这种水流中，水面的扰动会影响上游流态。测流堰顶部的线或面。3.7完全通气水舌fullyventilatednappe(fullyaeratednappe)跳离测流堰下游表面的水舌，水舌下面形成一个与大气连通的气穴。3.8本标准采用的其他术语和符号应符合GBJ95的有关规定。4.1三角形薄壁堰的形状尺寸，见图4。4.2.1堰口角的使用范围是α=20°~100°,常用堰口角α=90°。4.2.2另有三种特殊堰口角的三角形薄壁堰，堰口角CJ/T3008.1-1993垂直于三角形薄壁堰锐缘的堰口剖面，见图5。图5堰口剖面5流量计算5.1流量计算公式C.流量系数；g——重力加速度，m/s²5.1.1.1α=90°的Ce值由图6查得。……0.580.580.57h/P图6·流量系数C.(a=90°)5.1.1.2α=20°~100°(不包括90°)的Ce值由图7查得。图7流量系数Ce(α=20°~100°,不包括90°)30.560.580.5905.1.2he值按公式(2)计算：kh——粘滞力和表面张力综合影响的校正值，m。CJ/T3008.1--19935.1.2.1确定kh值b.当α=20°~100°(不包括90°)时，kh查图8求得。图8水头校正值k(α=20°~100°不包括90°)5.2应用限制条件c.h≥0.06m;d.p≥0.09m。6技术条件6.1.1三角形薄壁堰板应采用耐腐蚀、耐水流冲刷、不变形的材料精确加工而成。6.1.2行近渠道、下游渠道和静水井等，用混凝土或砖石等砌筑后，再用水泥砂浆抹面压光；也可用其他耐腐蚀材料预制而成。6.1.3连通管应采用铸铁管或塑料管等耐腐蚀管道。6.2堰板制作6.2.1堰板必须平整坚固。6.2.2堰口顶面厚度δ=1～2mm。若δ>2mm,则堰板下游边缘做成斜面，斜面与顶面的夹角β不小6.2.3表面粗糙度6.2.4尺寸精度b.b士0.001bmm;6.3行近渠道行近渠道的长度不小于最大水头时水舌宽度的10倍。电子记录仪的误差不大于满量程读数的0.5%。准板与堰口最低点的垂直距离。7.3.2不能用下降或上升堰前水面至堰口处的读数，当作水头零点。7.3.3确定水头零点的方法a.将行近渠道中的静水位下降至三角堰口以下。b.在堰板上游的行近渠道上，安装一临时的钩形测针，在测定堰顶水头的位置处安装针形测针。c.把一个用千分卡尺测量过的圆筒的一端放在堰口上，另一端架在钩形测针的针尖上。在圆筒上放一个机工水平尺，调整钩形测针，使圆筒呈水平位置，然后记录钩形测针的读数A,见图9。图6三角形薄壁堰水头零点的确定d.将钩形测针下降到行近渠道的水面，并记录其读数B。调整针形测针至水面，记录读数C。e.针形测针圆筒底的读数由下式求得：D=(A—B)+C………(f.圆筒底到三角形堰口顶点的距离由下式求得：g.针形测针在三角形堰口顶点的读数，即水头零点的读数，由下式求得：E=(A—B)+C—Y…………………(5)7.4水头测量精度水头测量的误差为水头变幅的1%,但不得大于士3mm。8流量测量的综合误差分析8.1误差计算公式………(6)式中：X₀——流量计算值的误差，%;Xc——流量系数的误差，%;Xg号—三角堰堰口角度的误差，%;Xhe-—有效水头的误差，%。8.1.2Xge值按公式(7)计算：E——堰口宽度的误差，mm;CJ/T3008.1—1993b₁———堰口上部宽度，mm。8.1.3Xhe值按公式(8)计算：…………式中：Eb——测量水头的误差，mm;Ek——水头改正系数的误差，取0.3mm;2S-—n次水头测量值平均值的误差，mm;n——水头测量的次数。8.1.3.1Sh值按公式(9)计算：次水头测量值的标准差。式中：h—--各次水头测量值，mm;五n次水头测量值的平均值，mm。9.1行近渠道、连通管和静水井应保持清洁，底部无障碍物。9.2下游渠道应无阻塞，保持水舌下空气自由流通。9.3堰板应保持清洁和牢固可靠，清洗时不得损伤堰口，特别是堰口上游的边缘和表面。9.4凡有漏水部位，应及时修补。9.5在渠道或堰板维修前后，要核查各部位的尺寸，是否与原尺寸相符。9.6每年应检查一次测针和水位计等测量仪器的精度。9.7每年对水头零点校测一次。CJ/T3008.1—1993行近渠道的流态(补充件)A1行近渠道的水流应为均匀稳定的亚临界流，其流速分布应接近于图A1。8-0.8图A1行近渠道中的正常流速分布A2保持亚临界流的条件式中：v-—行近渠道中的平均流速，m/s;A——行近渠道中的水流断面，m²。流量测量的误差分析举例(参考件)B1三角形薄壁堰的基本尺寸α=90°p=0.30mb₁=0.440mh=0.220mB2误差分析B2.1本例给定的误差本标准规定取X=±1.0%本标准规定取Ekh=±0.30mm连续15次水头读数的标准差Sh=0.03mm。B2.2使用者估算的测量误差测量水头误差eb=士0.10mmCJ/T3008.1—1993水头零点误差水头标准差堰口宽度误差堰口高度误差Eho=士0.10mmSb=0.03mmFht=士1.00mmB2.4计算Xhe根据公式(6),Xbe为：B2.5计算X。根据公式(4)X,为：=士〔1.0²+0.47²+6.25×0.28²〕1/2三种特殊堰口角的三角形薄壁堰的流量公式(参考件)C1三角形薄壁堰的堰口角(α=π/2rad或90°);(a=0.9273rad或53°8);(α=0.4899rad或28°4)。C2流量公式C2.1当时，流量公式转化为：…………Q=2.3625C.·h5/2……………(C2)流量计算查表C1。hQhQmm³/s×10mm³/s×100.0600.60320.012570.1020.59120.046410.0610.60280.013090.1030.59100.047540.0620.60230.013620.1040.59080.048690.0630.60190.014170.1050.59060.049850.0640.60150.014730.1060.59040.051030.0650.60120.015300.1070.59020.052220.0660.60080.015880.1080.59010.053440.0670.60050.016480.1090.58990.054670.0680.60010.017100.0690.59980.017720.1100.1110.58980.58970.055920.057190.0700.59940.018360.1120.58960.058470.0710.59900.019010.1130.58940.059770.0720.59870.019670.1140.58920.061080.0730.59830.020350.1150.58910.062420.0740.59800.021050.1160.58900.063770.0750.59780.021760.1170.58890.065140.0760.59750.022480.1180.58880.066530.0770.59730.023220.1190.58860,067930.0780.59700.023970.0790.59670.024730.1200.1210.58850.58830.069350.070790.0800.59640.025510.1220.58820.072240,0810.59610.026300.1230.58810.073720.0820.59580.027100.1240.58800.075220.0830.59550.027920.1250.58800.076730.0840.59530.028760.1260.58790.078270.0850.59500.029610.1270.58780.079820.0860.59480.030480.1280.58770.081390.0870.59450.031360.1290.58760.082980.0880.59420.032250.0890.59400.033160.1300.1310.58760.58750.084580.086210.0900.59370.034090.1320.58740.087850.0910.59350.035030.1330.58730.089510.0920.59330.035980.1340.58720.091190.0930.59310.036960.1350.58720.092890.0940.59290.037950.1360.58710.094610.0950.59270.038950.1370.58700.096340.0960.59250.039970.1380.58690.098100.0970.59230.041010.1390.58690.099870.0980.59210.042060.0990.59190.043120.1400.1410.58680.58670.101670.103480.1000.59170.044200.1420.58670.105320.1010.59140.045300.1430.58660.10717CJ/T3008.1—1993hQhQmm³/s×10mm³/s×100.1440.58660.109040.1860.58500.206210.1450.58650.110930.1870.58500.208990.1460.58640.112840.1880.58500.211800.1470.58630.114760.1890.58500.214630.1480.58620.116710.1490.85620.118670.1900.1910.58500.58500.217480.220340.1500.58610.120660.1920.58490.223220.1510.58610.122670.1930.58490.226120.1520.58600.124710.1940.58490.229060.1530.58600.126760.1950.58490.232030.1540.58590.128830.1960.58490.235010.1550.58590.130930.1970.58490.238020.1560.58590.133040.1980.58490.241060.1570.58580.135170.1990.58490.244110.1580.58580.137320.1590.58570.139500.2000.2010.58490.58490.247190.250280.1600.58570.141690.2020.58480.253390.1610.58570.143910.2030.58480.256520.1620.58560.146140.2040.58480.259690.1630.58560.148400.2050.58480.262880.1640.58550.150670.2060.58480.266100.1650.585.50.152970.2070.58480.269340.1660.58550.155290.2080.58480.272610.1670.58540.157630.2090.58480.275900.1680.58540.159990.1690.58530.162370.2100.2110.58480.58480.279210.282540.1700.58530.164770.2120.58480.285880.1710.58530.167190.2130.58470.289240.1720.58520.169640.2140.58470.292640.1730.58520.172100.2150.58470.296070.1740.58510.174590.2160.58470.299530.1750.58510.177090.2170.58470.303010.1760.58510.179630.2180.58470.306510.1770.58510.182190.2190.58470.310040.1780.58510.184780.1790.58510.187380.2200.2210.58470.58470.313590.317170.1800.58510.190010.2220.58470.320770.1810.58510.192650.2230.58470.324390.1820.58500.195310.2240.58470.328030.1830.58500.198000.2250.58460.331680.1840.58500.200710.2260.58460.335350.1850.58500.203450.2270.58460.33907CJ/T3008.1--1993续表C1hQm³/s×10mCQm³/s×10m0.2280.58460.342820.2700.58460.523170.2290.58460.346590.2710.2720.58460.58460.528020.532910.2300.58460.350390.2730.58460.537820.2310.58460.354210.2740.58460.542760.2320.58460.358060.2750.58460.547720.2330.58460.361930.2760.58460.552720.2340.58460.365820.2770.58460.557740.2350.58460.369740.2780.58460.562820.2360.58460.373690.2790.58470.567940.2370.58460.377660.2380.58460.381660.2800.58470.573060.2390.58460.385680.2810.2820.58470.58470.578190.583350,2400.58460.389730.2830.58470.588530.2410.58460.393800.2840.58470.593750.2420.58460.397900.2850.58470.598990.2430.58460.402020.2860.58470.604250.2440.58460.406170.2870.58470.609550.2450.58460.410340.2880.58470.614870.2460.58460.414540.2890.58470.620230.2470.58460.418770.2480.58460.423020.2900.58470.625600.2490.58460.427300.2910.2920.58470.58470.631010.636450.2500.58460.431600.2930,58470.641950.2510.58460.435930.2940.58480.647480.2520.58460.440280.2950.58480.653030.2530.58460.444660.2960.58480.658580.2540.58460.449070.2970.58480.664160.2550.58460.453500.2980.58480.669760.2560.58460.457960.2990.58480.675390.2570.58460.462450.2580.58460.466960.3000.58480.681060.2590.58460.471500.3010.3020.58480.58480.686750.692460.2600.58460.476060.3030.58480.698210.2610.58460.480650.3040.58480.703980.2620.58460.485270.3050.709800.2630.58460.489910.3060.58480.715680.2640.58460:494580.3070.58490.721590.2650.58460.499280.3080.58490.727500.2660.58460.504000.3090.58490.733410.2670.58460.508760.2680.58460.513530.3100.58490.739360.2690.58460.518340.3110.58490.74534mQm²/s×10mQm³/s×100.3120.58490.751350.3470.58510.980450.3130.58490.757380.3480.58510.987530.3140.58490.763440.3490.58510.994710.3150.58490.769540.3500.58520,3160.58490.775660.3170.58490.781810.3510.58520.3180.58490.788020.3520.58520.3190.58500.794280.3530.3540.58520.58520.3200.58500.800570.3550.58520.3210.58500.806850.3560.58520.3220.58500.813140.3570.58520.3230.58500.819470.3580.58520.3240.58500.825830.3590.58520.3250.58500.832220.3600.58530.3260.58500.838630.3270.58500.845080.3610.58530.3280.58500.851550.3620.58530.3290.58500.858060.3630.3640.58530.58530.3300.58500.864590.3650.58530.3310.58500.871160.3660.58530.3320.58500.877750.3670.58530.3330.58500.884380.3680.58540.3340.58500.891030.3690.58540.3350.5850.0.897720.3700.58540.3360.58500.904480.3370.58510.911280.3710.58540.3380.58510.918110.3720.58540.3390.58510.924910.3730.58540.3400:58510.931750.3740.3750.58540.58550.3410.58510.938620.3760.58550.3420.58510.945510.3770.58550.3430.58510.952440.3780.58550.3440.58510.959400.3790.58550.3450.58510.966380.3800.58550.3460.58510.973400.3810.5855mQm³/s×10mQm³/s×100.0600.61140.006370.1020.60170.023620.0610.61110.006630.1030.60160.024200.0620.61080.006910.1040.60140.024780.0630.61050.007180.1050.60130.025370.0640.61010.007470.1060.60110.025980.0650.60980.007760.1070.60090.026590.0660.60950.008060.1080.60080.027200.0670.60920.008360.1090.60060.027830.0680.60900.008670.0690.60870.008990.1100.1110.60050.60030.028470.029110.0700.60840.009320.1120.60020.029760.0710.60810.009650.1130.60000.030420.0720.60790.009990.1140.59980.031090.0730.60760.010330.1150.59970.031770.0740.60730.010690.1160.59950.032460.0750.60710.011050.1170.59940.033150.0760.60680.011410.1180.59920.033860.0770.60660.011790.1190.59910.034570.0780.60640.012170.0790.60610.012560.1200.1210.59890.59880.035290.036020.0800.60600.012960.1220.59870.036770.0810.60580.013360.1230.59850.037510.0820.60560.013770.1240.59840.038270.0830.60540.014190.1250.59820.039040.0840.60520.014620.1260.59810.039820.0850.60500.015050.1270.59800.040600.0860.60480.015490.1280.59790.041400.0870.60460.015940.1290.59780.042200.0880.60440.016400.0890.60420.016860.1300.1310.59760.59750.043020.043840.0900.60400.017340.1320.59730.044670.0910.60380.017820.1330.59720.045510.0920.60360.018300.1340.59710.046360.0930.60340.018800.1350.59700.047220.0940.60320.019300.1360.59680.048090.0950.60300.019810.1370.59670.048970.0960.60280.020330.1380.59660.049860.0970.60260.020860.1390.59650.050750.0980.60240.021390.0990.60220.021940.1400.1410.59640.59620.051660.052580.1000.60210.022490.1420.59610.053510.1010.60190.023050.1430.59600.05444续表C2mQm³/s×10mCQm³/s×100.1440.59600.055390.1860.59260.104440.1450.59590.056350.1870.59250.105840.1460.59580.057320.1880.59250.107260.1470.59570.058300.1890.59240.108670.1480.59560.059290.1490.59560.060290.1900.1910.59230.59230.110100.111550.1500.59550.061300.1920.59220.113000.1510.59540.062310.1930.59220.114470.1520.59520.063340.1940.59210.115950.1530.59520.064370.1950.59200.117430.1540.59510.065420.1960.59200.118930.1550.59500.066480.1970.59190.120440.1560.59490.067550.1980.59190.121970.1570.59480.068630.1990.59190.123510.1580.59480.069710.1590.59470.070810.2000.2010.59180.59180.125060.126620.1600.59460.071920.2020.59170.128190.1610.59450.073040.2030.59170.129770.1620.59440.074170.2040.59160.131360.1630.59440.075310.2050.59160.132960.1640.59430.076460.2060.59150.134570.1650.59420.077620.2070.59150.136200.1660.59410.078790.2080.59140.137840.1670.59410.079980.2090.59130.139490.1680.59400.081170.1690.59390.082370.2100.2110.59130.59120.141150.142820.1700.59380.083580.2120.59120.144500.1710.59370.084810.2130.59110.146200.1720.59370.086040.2140.59110.147920.1730.59360.087280.2150.59100.149640.1740.59350.088540.216.0.59100.151380.1750.59340.089800.2170.59100.153130.1760.59330.091080.2180.59090.154890.1770.59330.092370.2190.59090.156660.1780.59320.093670.1790.59310.094970.2200.2210.59080.59080.158440.160240.1800.59300.096290.2220.59080.162040.1810.59290.097620.2230.590.70.163860.1820.59290.098960.2240.59070.165700.1830.59280.100320.2250.59060.167540.1840.59270.101-680.2260.59060.169400.1850.59260.103050.2270.59060.17127CJ/T3008.1—1993续表C2CQm³/s×10hnCQm⁸/s×10m0.2280.59050.173150.2700.58920.263630.2290.59050.175.040.2710.2720.58910.58910.266060.268510.2300.59040.176950.2730.58910.270980.2310.59040,178860.2740.58910.273470.2320.59040.180790.2750.58910.275960.2330.59030.182740.2760.58900.278450.2340.59030.184690.2770.58900.280970.2350.59020.186660.2780.58900.283510.2360.59020.188640.2790.58900.286070.2370.59020.190630.2380.59010.192630.2800.58900.288630.2390.59010.194650.2810.2820.58890.58890.291190.293770.2400.59010.196680.2830.58890.296380.2410.59000.198720.2840.58890.299010.2420.59000.200790.2850.58890.301630.2430.59000.202870.2860.58880.304270.2440.58990.204960.2870.58880.306910.2450.58990.207050.2880.58880.309590.2460.58980.209160.2890.58880.312290.2470.58980.211270.2480.58980.213400.2900.58880.314990.2490.58980.215550.2910.2920.58870.58870.317690.320400.2500.58980.217720.2930.58870.323150.2510.58980,219900.2940.58870.325910.2520.58980.222090.2950.58870.328690.2530.58970.224290.2960.58860.331460.2540.58970.226490.2970.58860.334.240.2550.58970.228730.2980.58860.337040.2560.58970.230980.2990.58850.339850.2570.58970.233230.2580.58960.235490.3000.58850.342680.2590.58960.237770.3010.3020.58840.58840.345520.348370.2600.58960.240050.3030.58840.351240.2610.58950.242350.3040.58830.354120.2620.58950.244660.3050.58830.357020.263.0.58940.246990.3060.58830.359950.2640.58940.249330.3070.58830.362900.2650.58940.251680.3080.58830.365850.2660.58930.254040.3090.58820.368800.2670.58930.256420.2680.58920.258810.3100.58820.371770.2690.58920.2612]0.3110.58820.374.77mQm³/s×10mQm³/s×100.3120.58820.377790.3470.58780.492490.3130.58820.380810.3480.58780.496040.3140.58810.383840.3490.58780.499580.3150.58810.386870.3160.58810.389950.3500.58770.503130.3170.58810.393040.3510.58770.506720.3180.58810.396150.3520.58770.510330.3190.58810.399270.3530.3540.58770.58770.513970.517580.3200.58810.402410.3550.58760.521210.3210.58810.405530.3560.58760.524870.3220.58800.408670.3570.58760.528560.3230.58800.411840.3580.58760.532270.3240.58800.415030.3590.58760.535960.3250.58800.418240.3260.58800.421740.3600.58750.539670.3270.58800.424710.3610.58750.543400.3280.58800.427960.3620.58750.547170.3290.58800.431230.3630.3640.58750.58750.550960.554730.3300.58800.434510.3650.58740.558510.3310.58800.437790.3660.58740.562310.3320.58790.441070.3670.58740.566160.3330.58790.444380.3680.58740.570030.3340.58790.447730.3690.58740.573910.3350.58790.451080.3700.58740.577800.3360.58790.454460.3370.58790.457850.3710.58740.581710.3380.58790.461250.3720.58740.585600.3390.58790.464670.3730.3740.58730.58730.589500.593450.3400.58790.468100.3750.58730.597420.3410.58790.471530.3760.58730.601410.3420.58780.474970.3770.58730.605420.3430.58780.478420.3780.58730.609440.3440.58780.481910.3790.58730.613460.3450.58780.485420.3800.58720.617470.3460.58780.488950.3810.58720.62150CJ/T3008.1-1993hQm³/s×10mQm³/s×10m0.0600.64170.003340.1020.62120.012190.0610.64100.003480.1030.62090.012490.0620.64030.003620.1040.62050.012780.0630.63960.003760.1050.62020.013090.0640.63900.003910.1060.61990.013390.0650.63830.004060.1070.61960.013710.0660.63760.004210.1080.61930.014020.0670.63700.004370.1090.61900.014340.0680.63640.004530.0690.63580.004700.1100.1110.61870.61840.014660.014990.0700.63520.004860.1120.61810.015330.0710.63460.005030.1130.61790.015660.0720.63400.005210.1140.61760.016010.0730.63350.005390.1150.61730.016350.0740.63290.005570.1160.61710.016700.0750.63240.005750.1170.61690.017060.0760.63180.005940.1180.61660.017420.0770.63130.006130.1190.61640.017780.0780.63080.006330.0790.63030.006530.1200.1210.61620.61600.018150.018530.0800.62980.006730.1220.61580.018910.0810.62930.006940.1230.61550.019290.0820.62890.007150.1240.61530.019680.0830.62850.007370.1250.61510.020070.0840.62800.007590.1260.61480.020460.0850.62760.007810.1270.61460.020860.0860.62720.008030.1280.61440.021270.0870.62670.008260.1290.61410.021680.0880.62640.008500.0890.62600.008740.1300.1310.61390.61370.022090.022510.0900.62560.008980.1320.61350.022940.0910.62520.009220.1330.61330.023370.0920.62480.009470.1340.61310.023800.0930.62440.009730.1350.61290.024240.0940.62400.009980.1360.61270.024680.0950.623.60.010250.1370.61250.025130.0960.62330.010510.1380.61230.025590.0970.62290.010780.1390.61210.026040.0980.62260.011060.0990.62220.011330.1400.1410.61190.61170.026510.026970.1000.62190.011610.1420.61150.027440.1010.62150.011900.1430.61130.02792续表C3mQhCQm³/s×10m³/s×10m0.1440.61120.028400.1860.60510.053320.1450.61100.028890.1870.60500.054030.1460.61080.029380.1880.60490.054750.1470.61060.029880.1890.60480.055470.1480.61050.030380.1490.61030.030890.1900.1910.60470.60450.056200.056930.1500.61020.031400.1920.60440.057660.1510.61000.031920.1930.60430.058410.1520.60990.032450.1940.60420.059160.1530.60970.032970.1950.60410.059920.1540.60950.033500.1960.60410.060680.1550.60930.034040.1970.60400.061450.1560.60910.034580.1980.60390.062220.1570.60900.035130.1990.60380.063000.1580.60880.035680.1590.60870.036240.2000.2010.60380.60370.063790.064580.1600.60850.036800.2020.60350.065370.1610.60830.037370.2030.60340.066170.1620.60820.037940.2040.60330.066980.1630.60800.038520.2050.60330.067800.1640.60790.039110.2060.60320.068620.1650.60770.039690.2070.60310.069440.1660.60760.040290.2080.60300.070280.1670.60740.040890.2090.60290.071110.1680.60730.041490.1690.60710.042100.2100.2110.60290.60280.071960.072810.1700.60700.042720.2120.60270.073660.1710.60690.043340.2130.60260.074530.1720.60680.043970.2140.60250.075390.1730.60670.044600.2150.60250.076270.1740.60650.045240.2160.60240.077150.1750.60630.045880.2170.60230.078030.1760.60620.046530.2180.60220.078930.1770.60610.047180.2190.60220.079820.1780.60600.047840,1790.60590.048510.2200.2210.60210.60200.080730.081640.1800.60570.049180.2220.60190.082550.1810.60560.049860.2230.60180.083470.1820.60550.050540.2240.60180.084410.1830.60540.051220.2250.60170.085350.1840.60530.051920.2260.60170.086290.1850.60510.052610.2270.60160.08724CJ/T3008.1—1993400续表C3hQm³/s×10Qm³/s×10m0.2280.60150.088190.2700.59920.134070.2290.60150.089150.2710.2720.59920.59910.135290.136530.2300.60140.090110.2730.59910.137780.2310.60130.091080.2740.59900.139030.2320.60130.092070.2750.59900.140300.2330.60120.093060.2760.59890.141570.2340.60120.094050.2770.59890.142840.2350