钢质直管沿程阻力损失资料及计算

百米钢质直管沿程阻力损失资料及计算1管路输送的土质分类确定管路输送特性时，土类以粒径划分为七类，该分类与土壤分类之间的关系及各类土特性的计算数据如表（1-1）。土壤水力输送计算数据表表（1-1）土质分类土壤颗粒直径（mm）沉降速度土颗粒密度天然土密度1（t/m3）疏浚土分类水力输送分类范围颗粒平均直径dsVss（mm/s）（t/m3）1流态小于至0.010.00051.50淤淤泥0.00250.32.651.65泥2很软0.011.701.75粘土类3软塑0.01至0.050.010.31.754可塑粘土类0.022.02.701.805硬塑0.053.01.856坚硬1.907、8松散0.050.053.09中密粉砂至0.0756.02.701.8010密实0.100.1010.07、8松散0.100.1010.0砂土类9中密细砂至0.17515.02.701.8510密实0.250.2520.07、8松散0.250.2520.09中密中砂至0.37525.02.701.9010密实0.500.5035.07、8松散0.500.535.09中密粗砂至1.060.02.702.010密实2.002.0140.0碎11松散2.002.0140.0石12中密砾石至4.0175.02.702.0类13密实6.006.0250.02百米钢质直管管路清水特性曲线方程式2.1百米钢质直管管路总耗用清水水头计算公式HwlooV2D2gw100公式（2-1）式中：Hwio每百米钢质直管长度的管路清水水头损失值（m水柱）；w管路沿程清水摩阻系数；V管路清水平均流速（m/s）;D管路内径（m）;g重力加速度，取g=9.81（m/s2）;下w水密度，海水取器w=1.025（t/m3）,清水取Yw=1.00（t/m3）2.2计算公式中有关数据的取值不同管径清水磨阻系数如下表（2-1）表（2-1）管径D(m)0.600.650.700.750.800.850.90w0.01350.01320.01300.01270.01250.01200.01152.3化简后不同流速、不同管径的百米钢质直管管路总耗用清水水头计算管径700mm百米钢质直管管路耗用清水水头计算公式：Hw1100=0.097V）2公式（2-2）管径800mm百米钢质直管管路耗用清水水头计算公式：Hw2100=0.0816V2公式（2-3）管径850mm百米钢质直管管路耗用清水水头计算公式：Hw3100=0.0738V2公式（2-4）当实际施工现场排泥管管径D确定以后，可根据公式（2-2）、（2-3）、（2-4）设不同的清水流速V求出相应的Hw公式（2-2）、（2-3）、（2-4）中清水密度取海水，即ow=1.025(t/m)3百米钢质直管管路泥浆特性曲线方程式3.1百米钢质直管管路总耗用泥浆水头计算公式Hm100D2gK100公式（3-1）式中:Hm100每百米钢质直管长度的管路泥浆水头损失值（m水柱）;Vm管路泥浆平均流速（m/s）;K泥浆阻力系数与清水阻力系数之比值；其他符号同公式（2-1）。3.2比值K计算公式（1）砂性土计算公式2|K=1CVd,gds(s3/2Kd2dsgD亿1川Vss5dsi0.2i=4式中：C土颗粒体积浓度（）;_YmwC二-_Yswm泥浆密度（t/m3）;7w水密度，海水取yw=1.025（t/m3）,清水取Yw=1.00（t/m3）;s土颗粒密度（t/m3）;天然土密度（t/m3）;Kd实验系数，取Kd=121;Vd管路泥浆平均流速（m/s）;2g重力加速度，取g=9.81（m/s）;D管路内径（m）;ds颗粒平均直径（m）;dsi颗粒级配曲线上过筛量为10%、20%、50%、70%、90%时的相应粒经；Vss土颗粒在清水中的沉降速度（m/s）。（2）淤泥及粘性土计算公式K=1C（s一1）mw当w=1t/m3时，K二m（3）各种土类计算参数见下表（3-1）表（3-1）项目淤泥粘土粉砂细砂中砂粗砂砾石颗粒直径ds(mm)0.00250.0200.0750.1750.3751.04.0颗粒密度Vs(t/m3)2.652.702.702.702.702.702.70天然土密度1f(t/m3)1.701.851.801.851.902.002.00颗粒沉降速度Vss(mm/s)/61525601753.3化简后不同土类、不同浓度、不同流速、不同管径的百米钢质直管管路总耗用泥浆水头计算管径700mm百米钢质直管管路耗用泥浆水头计算公式：Hm1100=0.0947KVi公式（3-4）管径800mm百米钢质直管管路耗用泥浆水头计算公式:公式（3-5）公式（3-6）Hm2100=0.0796KV；管径850mm百米钢质直管管路耗用泥浆水头计算公式:2Hm3100=0.0720KVm当实际施工现场的土质、管路参数K、排泥管管径D确定以后，可根据公式（3-4）、（3-5）、（3-6）设不同的泥浆流速Vm求出相应的Hm。3.4不同土类、不同浓度、不同流速、不同管径的百米钢质直管管路耗用泥浆水头值见下表700mm百米钢质直管管路输送不同土质、不同浓度泥浆消耗水头值一一表（3-2）800mm百米钢质直管管路输送不同土质、不同浓度泥浆消耗水头值表（3-3）850mm百米钢质直管管路输送不同土质、不同浓度泥浆消耗水头值一一表（3-4）流速m/s流里m3/h海水淤泥浓度（）粘土浓度（）粉砂浓度（）1015202530354010152025303540101520253035403.041560.8730.9100.9390.9690.9981.0271.0561.0850.9230.9590.9951.0301.0661.1021.1371.3441.5901.8372.0832.3292.5752.8213.548491.1891.2391.2791.3181.3581.3981.4381.4771.2571.3051.3541.4021.4511.4991.5481.5821.7932.0042.2152.4262.6372.8484.055421.5521.6181.6701.7221.7741.8261.8781.9301.6411.7051.7681.8321.8951.9582.0221.8842.0682.2532.4382.6222.8072.9924.562351.9652.0482.1142.1802.2452.3112.3772.4422.0772.1582.2382.3182.3982.4792.5592.2452.4092.5732.7372.9013.0663.2305.069272.4262.5292.6102.6912.7722.8532.9343.0152.5652.6642.7632.8622.9613.0603.1592.6622.8092.9573.1053.2533.4003.5485.576202.9353.0603.1583.2563.3543.4523.5503.6483.1033.2233.3433.4633.5833.7023.8223.1323.2663.4003.5353.6693.8033.9386.083133.4933.6413.7583.8753.9914.1084.2254.3423.6933.8363.9784.1214.2644.4064.5493.6543.7773.9004.0234.1464.2694.3926.590054.0994.2734.4104.5474.6844.8214.9595.0964.3344.5014.6694.8365.0045.1715.3394.2264.3404.4544.5674.6814.7954.9087.096984.7544.9565.1155.2745.4335.5925.7515.9105.0265.2215.4155.6095.8035.9976.1924.8494.9555.0605.1665.2715.3775.4827.5103915.4575.6895.8726.0546.2376.4196.6026.7845.7705.9936.2166.4396.6626.8857.1085.5215.6205.7185.8175.9156.0146.112续上表流速m/s流里m3/h细砂浓度（）中砂浓度（）粗砂浓度（）砾石浓度（）101520253035401015202530355101520252.557.5103.041561.9492.4983.0473.5954.1444.6935.2412.2662.9733.6804.3875.0945.8012.2553.6595.0636.4667.8702.0883.3244.5605.7963.548492.1002.5703.0413.5113.9814.4524.9222.3712.9773.5834.1894.7955.4012.3633.5664.7695.9727.1752.2193.2784.3385.3974.055422.3372.7493.1613.5723.9844.3954.8072.5753.1053.6354.1664.6965.2262.5673.6204.6735.7256.7782.4413.3684.2955.2224.562352.6483.0143.3803.7464.1114.4774.8432.8593.3313.8024.2734.7455.2162.8523.7884.7245.6606.5952.7413.5654.3895.2135.069273.0253.3543.6834.0124.3424.6715.0003.2153.6394.0634.4874.9115.3363.2094.0514.8935.7356.5773.1083.8494.5915.3335.576203.4623.7614.0604.3604.6594.9585.2583.6354.0204.4064.7915.1775.5633.6294.3945.1605.9266.6913.5374.2124.8865.5606.083133.9564.2314.5054.7795.0545.3285.6024.1154.4684.8225.1755.5285.8824.1094.8115.5136.2156.9174.0264.6445.2615.8796.590054.5064.7595.0125.2655.5195.7726.0254.6524.9785.3045.6315.9576.2834.6475.2955.9436.5907.2384.5705.1405.7106.2817.096985.1085.3445.5795.8146.0496.2846.5195.2445.5475.8506.1536.4566.7595.2405.8416.4437.0447.6465.1685.6976.2276.7577.5103915.7635.9836.2026.4226.6416.8617.0805.8906.1736.4566.7387.0217.3045.8866.4477.0097.5708.1325.8196.3136.8077.302流速m/s流里m3/h海水淤泥浓度（）粘土浓度（）粉砂浓度（）1015202530354010152025303540101520253035403.054290.7350.7660.7900.8150.8400.8640.8890.9130.7770.8070.8370.8670.8970.9270.9571.2231.4761.7291.9822.2352.4882.7413.563331.0001.0421.0761.1091.1431.1761.2101.2431.0571.0981.1391.1801.2211.2611.3021.4091.6261.8432.0602.2772.4942.7114.072381.3061.3621.4051.4491.4931.5361.5801.6241.3811.4341.4881.5411.5941.6481.7011.6541.8442.0332.2232.4132.6032.7924.581431.6531.7231.7781.8341.8891.9442.0002.0551.7481.8151.8831.9502.0182.0852.1531.9502.1192.2872.4562.6252.7942.9625.090482.0412.1272.1962.2642.3322.4002.4692.5372.1582.2412.3242.4082.4912.5742.6582.2952.4462.5982.7502.9023.0543.2065.599532.4692.5742.6572.7392.8222.9042.9873.0702.6112.7122.8122.9133.0143.1153.2162.6852.8232.9613.0993.2373.3753.5136.0108572.9393.0633.1623.2603.3583.4563.5553.6533.1073.2273.3473.4673.5873.7073.8273.1203.2473.3733.5003.6263.7533.8796.5117623.4493.5953.7113.8263.9414.0574.1724.2873.6463.7873.9284.0694.2104.3514.4923.5983.7153.8323.9494.0654.1824.2997.0126674.0004.1704.3034.4374.5714.7054.8384.9724.2294.3924.5564.7194.8825.0465.2094.1194.2284.3364.4454.5534.6614.7707.5135724.5924.7874.9405.0945.2475.4015.5545.7084.8555.0425.2305.4175.6055.7925.9804.6824.7834.8854.9865.0875.1885.289续上表流速m/s流里m3/h细砂浓度（）中砂浓度（）粗砂浓度（）砾石浓度（）101520253035401015202530355101520252.557.5103.054291.8452.4092.9733.5374.1014.6655.2292.1702.8973.6244.3505.0775.8042.1603.6025.0456.4887.9311.9873.2584.5285.7983.563331.9422.4262.9093.3933.8764.3604.8432.2212.8443.4674.0904.7135.3362.2123.4494.6865.9227.1592.0653.1534.2425.3314.072382.1202.5432.9663.3893.8124.2354.6582.3642.9093.4543.9994.5445.0892.3563.4384.5205.6036.6852.2273.1804.1335.0854.581432.3652.7413.1173.4933.8694.2454.6212.5823.0663.5514.0354.5195.0042.5753.5364.4985.4606.4222.4603.3074.1545.0005.090482.6683.0063.3453.6834.0214.3604.6982.8633.2993.7354.1714.6075.0432.8573.7224.5885.4546.3192.7533.5154.2785.0405.599533.0243.3323.6403.9474.2554.5624.8703.2023.5983.9954.3914.7875.1843.1963.9834.7705.5576.3443.1023.7954.4885.1816.0108573.4313.7133.9954.2774.5594.8415.1233.5943.9574.3204.6845.0475.4103.5884.3105.0315.7536.4743.5024.1374.7735.4086.5117623.8854.1464.4064.6664.9275.1875.4474.0364.3714.7065.0425.3775.7134.0314.6965.3626.0286.6943.9514.5375.1245.7107.0126674.3864.6274.8695.1115.3535.5945.8364.5254.8375.1485.4595.7716.0824.5215.1395.7576.3766.9944.4474.9915.5366.0807.5135724.9315.1565.3825.6085.8336.0596.2845.0615.3525.6425.9336.2246.5145.0575.6346.2116.7887.3654.9885.4966.0046.512流速m/s流里m3/h海水淤泥浓度（）粘土浓度（）粉砂浓度（）1015202530354010152025303540101520253035403.061280.6640.6920.7140.7360.7590.7810.8030.8250.7020.7290.7560.7830.8100.8370.8641.1481.3991.6491.9002.1502.4002.6513.571500.9030.9420.9721.0021.0321.0631.0931.1230.9550.9921.0291.0661.1031.1401.1771.3111.5251.7401.9552.1692.3842.5984.081711.1801.2301.2701.3091.3491.3881.4271.4671.2481.2961.3441.3921.4401.4891.5371.5271.7151.9022.0902.2782.4662.6544.591931.4941.5571.6071.6571.7071.7571.8071.8571.5791.6401.7011.7621.8231.8841.9451.7911.9582.1252.2922.4592.6262.7935.0102141.8441.9221.9842.0452.1072.1692.2302.2921.9502.0252.1002.1752.2512.3262.4012.0992.2502.4002.5502.7002.8513.0015.5112362.2312.3262.4002.4752.5502.6242.6992.7732.3592.4502.5412.6322.7232.8152.9062.4502.5862.7232.8602.9963.1333.2696.0122572.6552.7682.8572.9453.0343.1233.2123.3012.8072.9163.0243.1333.2413.3503.4582.8412.9663.0913.2163.3423.4673.5926.5132783.1163.2483.3533.4573.5613.6653.7693.8743.2953.4223.5493.6763.8043.9314.0583.2713.3873.5023.6183.7343.8493.9657.0143003.6143.7673.8884.0094.1304.2514.3724.4923.8213.9694.1164.2644.4114.5594.7073.7403.8483.9554.0624.1704.2774.3847.5153214.1494.3254.4644.6024.7414.8805.0185.1574.3864.5564.7254.8955.0645.2345.4034.2484.3484.4484.5484.6484.7494.849续上表流速m/s流里m3/h细砂浓度（）中砂浓度（）粗砂浓度（）砾石浓度（）101520253035401015202530355101520252.557.5103.061281.7642.3222.8803.4383.9964.5545.1122.0862.8053.5244.2434.9625.6812.0753.5034.9316.3587.7861.9053.1624.4195.6763.571501.8382.3172.7953.2733.7524.2304.7082.1142.7313.3473.9634.5805.1962.1053.3294.5535.7767.0001.9593.0374.1145.1924.081711.9882.4072.8263.2443.6634.0814.5002.2302.7693.3093.8484.3874.9272.2223.2934.3645.4346.5052.0943.0373.9804.9234.591932.2012.5732.9453.3173.6894.0624.4342.4162.8953.3753.8544.3344.8132.4093.3614.3125.2646.2162.2953.1333.9714.8095.0102142.4692.8033.1383.4733.8084.1434.4782.6623.0933.5253.9564.3884.8192.6553.5124.3695.2256.0822.5533.3074.0624.8165.5112362.7853.0903.3943.6994.0034.3084.6122.9613.3533.7464.1384.5304.9222.9553.7344.5135.2926.0702.8623.5484.2344.9206.0122573.1483.4283.7073.9864.2654.5444.8233.3103.6694.0294.3884.7485.1073.3044.0184.7325.4466.1603.2193.8484.4765.1056.5132783.5553.8134.0704.3284.5864.8435.1013.7044.0364.3684.7005.0315.3633.6994.3585.0175.6766.3353.6204.2014.7815.3617.0143004.0044.2434.4834.7224.9615.2005.4394.1424.4504.7595.0675.3755.6834.1384.7505.3615.9736.5854.0654.6035.1425.6817.5153214.4944.7174.9405.1645.3875.6105.8334.6234.9105.1985.4865.7736.0614.6195.1905.7616.3326.9034.5505.0535.5566.059