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1、7.5巴歇爾流量槽概要7.5．1流量測(cè)量原理1）測(cè)量原理：用明渠測(cè)流量時(shí)，在明渠上安裝量水堰槽。量水堰槽把明渠內(nèi)流量的大小轉(zhuǎn)成液位的高低。利用超聲波傳感器測(cè)量量水堰槽內(nèi)的水位，再按相應(yīng)量水堰槽的水位-流量關(guān)系反算出流量。7.5.2巴歇爾槽現(xiàn)場(chǎng)安裝平面示意圖（圖1）7.5.3巴歇爾槽構(gòu)造（圖2）7.5.4巴歇爾槽構(gòu)造尺寸（表一）單位：米類別序號(hào)喉道段收縮段擴(kuò)散段墻高bNB1L1LaB2L2KD小型10.0250.0760.0290.1670.3560.2370.0930.2030.0190.2320.0510.1

2、140.0430.2140.4060.2710.1350.2540.0220.2630.0760.1520.0570.2590.4570.3050.1780.3050.0250.4640.1520.3050.1140.4000.6100.4070.3940.6100.0760.6150.2280.3050.1140.5750.8640.5760.3810.4570.0760.77標(biāo)準(zhǔn)型60.250.600.230.781.3250.8830.550.920.080.8070.300.600.230.841.35

3、00.9020.600.920.080.9580.450.600.231.021.4250.9480.750.920.080.9590.600.600.231.201.5001.00.900.920.080.95100.750.600.231.381.5751.0531.050.920.080.95110.900.600.231.561.6501.0991.200.920.080.95121.000.600.231.681.7051.1391.300.920.081.0131.200.600.231.921.8

4、001.2031.500.920.081.0141.500.600.232.281.951.3031.800.920.081.0151.800.600.232.642.101.3992.100.920.081.0162.100.600.233.002.251.5042.400.920.081.0172.400.600.233.362.401.6042.700.920.081.0大型183.050.910.3434.764.271.7943.681.830.1521.22193.660.910.3435.614.

5、881.9914.472.440.1521.52204.571.220.4577.627.622.2955.593.050.2291.83216.101.830.6869.147.622.7857.323.660.3052.13227.621.830.68610.677.623.3838.943.960.3052.13239.141.830.68612.317.933.78510.574.270.3052.132412.191.830.68615.488.234.78513.824.880.3052.13251

6、5.241.830.68618.538.235.77617.276.100.3052.135）巴歇爾槽水位-流量公式（表2）類別序號(hào)喉道寬度b(m)流量公式Q=Chan(L/S)水位范圍h(m)流量范圍Q(L/S)臨界淹沒度%最小最大最小最大小型10.02560.4ha1.550.0150.210.095.40.520.051120.7ha1.550.0150.240.1813.20.530.076177.1ha1.550.030.330.7732.10.540.152381.2ha1.540.030.451.

7、50111.00.650.228535.4ha1.530.030.602.52510.6標(biāo)準(zhǔn)型60.25561ha1.5130.030.603.02500.670.30679ha1.5210.030.753.54000.680.451038ha1.5370.030.754.56300.690.601403ha1.5480.050.7512.58500.6100.751772ha1.5570.060.7525.011000.6110.902147ha1.5650.060.7530.012500.6121.0023

8、97ha1.5690.060.8030.015000.7131.202904ha1.5770.060.8035.020000.7141.503668ha1.5860.060.8045.025000.7151.804440ha1.5930.080.8080.030000.7162.105222ha1.5990.080.8095.036000.7172.406004ha1.6050.080