某电站可研报告水文部分

PAGE2水文气象2.1流域概况××流域位于××省的东南部,北纬26°00′～27°20′,东经112°52′～114°07′,跨株洲、郴州、衡阳三个地区，包括茶陵县、炎陵县、安仁县的全部、攸县的大部分及资兴、永兴、衡东的一部分。××为湘水的一级支流，发源于湘赣交界处井岗山万洋山西麓，流经酃县、茶陵、攸县至衡东雷溪市注入湘江。河长296km,流域面积10305km2,占湘水流域面积的11％，流域平均坡降为1.01‰，流域内海拔高程50～2000m。地势东南高西北低。东以万洋山与赣江支流禾水遂川为界，南起八面山与耒水毗邻，西邻耒水中下游以山岭、蛤蟆口、大山为界,北抵低矮山岭以婆婆岩、黄土岗等与渌水分界，西北汇入湘江。干流流向大致由东南向西北，整个流域南北宽而东西窄。根据流域地貌，可分为上游高山区，中、下游丘陵低山区，茶陵县浣溪以上属××上游山区，河谷深切，河床狭窄，河床坡降大，滩险毗连，跌水与瀑布较多，河床多为岩石及卵石组成，地表植被良好，森林茂密，为我省主要林源之一；浣溪以下河谷开阔，水流减缓，河床比降为0.24～1.2‰，海拔一般在70～150m左右，浣溪圩至茶陵城附近为丘陵盆地，沿干流间有较大平地。茶陵城以下至平水圩又为山区峡谷；平水圩至石峡又为盆地丘陵地区，两岸开阔，平地较多，石峡至甘溪有一不长的峡谷段，两岸高山多在100m以内，山势不甚整齐，河床多为泥沙，间有少量的卵石，甘溪以下至河口，属于衡阳盆地范围。××流域面积在450km2以上较大支流除源流溆濑水外共6条，左岸有永乐江，右岸有河漠水，沔水、茶水、攸水、清江(攸县)五条，虽左右岸支流分布不均，但永乐江流域面积较大，故两岸流域面积相差尚不悬殊。各支流特征值见表2.1。 ××流域支流情况表表2.1河名河漠水沔水茶水攸水清江(攸县)永乐江面积(km2)90477590311924782572河长(km)681006211563210坡降(‰)7.935.631.331.840.871.90茶陵县城位于××流域中上游,县城控制断面龙牲以上流域面积4343km2,占××流域面积42.1％，占龙家山水文站集雨面积的96.2％。2.2气象××流域位于南岭北坡，属于亚热带气候，年内4～6月，因冷暖空气交锋停滞于南岭一带，便开始本流域的梅雨季节，6月以后东亚对流层锋逐渐北移，夏季热带海洋气团盛行，冬季受中纬度大陆气团控制及冰洋气团影响，本区亦处于台风侵袭的边缘地带，形成流域春湿秋燥，夏热冬冷，春夏之间多梅雨。流域内暴雨多系气旋雨，受台风侵袭形成台风雨，天气系统高空为西南低涡，江淮切变线，地面为静止锋，暴雨中心常位于流域的东南侧，如攸水、沔水、河漠水的上游一带。其中黄丰桥、高垄、策源、柏市一带亦是我省的暴雨中心之一，年最大1d、3d降雨多发生于4～8月，暴雨历时单站一般2～4d，流域2～3d。气象要素主要依据茶陵气象站39年(1957～1995)实测资料统计，最大1d降水270.7mm，发生在1983年；多年平均降水量1520mm；最大年降水量2250.4mm，发生在1997年；最小降水量799mm，出现在1963年；多年平均气温17.9℃；极端最高气温40℃，发生在1963年；极端最低气温-9.9℃，出现在1972年。多年平均日照时数1715.9h；多年平均蒸发量1477.0mm，多年平均风速2.6m2.3水文基本资料干流茶陵段县城上游有坑口水文站,县城下游有龙家山水文站,两站基本情况如下：⑴龙家山水文站该站位于茶陵县龙牲控制断面下游21.6km，控制流域面积4515km2，1956年5月1日由××省水文总站设立。同年6月1日正式观测至今，为××中游控制站，流量测验段尚整齐，单式断面，两岸倚山，无漫溢现象，比降上断面上游约100m处为弯道，弯道右岸有小溪汇入，比降下断面下游约400m处有一大沙洲，河床右岸系砾石、左岸系细沙组成，洪水时左岸略有冲淤，流量测验一般采用流速仪施测，高水用浮标测流，浮标系数采用0.85。建站至今实测最高水位为92.74m(56黄海)，发生在1982年6月17日，相应流量为4560m3/s,实测水位变幅8.01m测站基本水尺断面于1979年上迁30m，1980年4月又将测流断面上迁30m，使基本水尺断面与测流断面合一，上、下比降水尺断面未变动。本站系冻结基面，换算关系：冻结基面-6.11m=56黄海基面。⑵坑口水文站该站1957年1月建于茶陵县桃坑乡坑口村，是沔水的控制站，集雨面积692km2，观测项目有水位、流量、降雨等。测验河段约有200m的较顺直段，一般中低水位水面宽约40～50m，高水时近100m宽，在基本水尺断面上游约150m处有一急弯；断面下游约1000m有一急滩，成为良好的测站控制。河床右岸系细沙组成，左岸系岩石及黄土组成，较坚实，河床底部为卵石，当水位到达88.31m时，右岸开始漫滩，漫滩宽度约30m。流量测验时低水多用流速仪施测，中、高用浮标或流速仪水面一点法施测，浮标及水面流速系数均用0.85。2.3.1龙家山水文站历年逐月平均流量资料及逐月最大流量资料龙家山站历年逐月实测平均流量资料见表2.3龙家山站逐年逐月平均流量资料（1月～12月）表2.3.1.1单位：m3/s年份1月2月3月4月5月6月7月8月9月10月11月121956382.0159.072.360.049.631.650.427.2195732.5128.0164.0259.0232.0195.045.863.464.0147.063.345.2195842.889.6111.0161.0337.0245.0109.052.555.848.229.322.5195927.8130.0133.0135.0272.0431.0107.098.5111.031.955.447.4196045.430.2187.0182.0305.0144.051.7259.082.667.275.984.9196142.091.8184.0401.0153.0478.0142.0294.0391.0103.074.756.6196252.733.3113.0170.0282.0610.0235.096.098.770.195.349.2196329.748.677.054.258.845.230.129.927.423.877.637.6196491.082.9177.0305.0161.0363.086.1131.463.650.231.124.9196521.728.566.5145.0150.0155.047.150.747.748.3125.090.5196685.2100.069.9215.0117.0125.0180.043.729.269.737.246.1196731.382.6119.0210.0181.0145.0158.064.051.630.838.932.8196826.150.1137.0183.0136.0632.0354.0121.066.050.081.550.3196987.371.0126.0129.0239.0105.052.9191.065.6113.059.336.3197054.675.0146.0358.0492.0222.0127.0101.0206.0162.076.4152.0197159.570.971.469.1161.0185.042.7107.061.444.831.530.1197224.668.733.1291.0195.0111.038.5177.084.878.0106.0101.01973148.0107.0119.0454.0399.0311.0274.0155.0127.0124.089.447.6197448.1123.058.486.794.8190.0147.0143.049.147.541.545.0197560.196.3254.0291.0576.0259.087.0191.098.9126.0140.080.0197644.159.3122.0247.0217.0316.0347.0153.088.8105.075.643.6197771.469.647.6168.0287.0453.0145.077.258.150.433.229.7197851.033.098.0196.0259.0149.053.569.643.634.028.524.5197933.364.0152.0159.0238.0319.085.990.999.039.526.324.9198030.7123.0130.0340.0389.0102.093.6136.074.558.238.332.3198140.693.0165.0604.0195.0216.0125.0114.075.3122.0172.063.8198245.7170.0136.0187.0269.0515.0113.0151.0132.080.7148.0113.0198399.9216.0349.0289.0403.0436.091.466.160.143.328.327.1198428.741.362.5328.0322.0195.081.087.0150.071.045.340.2198541.7236.0223.0205.0114.0160.074.1118.0120.049.238.535.8198629.856.0107.0185.093.0158.0151.057.932.229.439.724.7198722.431.784.9196.0141.087.861.870.149.8216.0153.079.0198850.6131.0277.0257.0332.0131.056.972.380.538.330.726.4198956.1108.076.0124.0327.0173.0173.059.643.035.632.422.7199059.6114.0177.0301.0165.0190.0148.0120.0117.086.4136.054.0199151.991.9138.6232.1241.5253.5129.8123.787.072.465.752.0199267.5196.0419.0273.0235.0259.0326.076.584.138.230.935.5199355.057.2124.0122.0159.0259.0200.0123.058.658.455.943.1199431.8127.0176.0289.0265.0473.0283.0374.0129.0138.051.8185.01995151.0200.0137.0229.0162.0310.0113.0129.045.480.544.434.9199654.844.5142.0249.0168.0115.091.1382.0105.055.138.234.0合计2128.03770.05689.99513.19905.1103815330.35080.03564.02968.72692.42133.4平均51.992.0138.8232.0241.6253.2130.0123.986.972.465.752.0龙家山站实测逐年各月有关径流参数计算（1月～12月）表2.3.1.2年份年流量（m3/s）月均流量（m3/s）年径流量(108月均径流量(108径流模数（公升/秒.km2）径流深度(mm)195619571439.200119.93337.8223.15226.563837.70119581303.700108.64234.2612.85524.062758.83119591580.000131.66741.5223.46029.162919.65519601514.900126.24239.8123.31827.961881.76219612411.100200.92563.3645.28044.5021403.40419621905.300158.77550.0714.17335.1661108.9981963539.90044.99214.1891.1829.965314.25419641567.200130.60041.1863.43228.926912.2041965976.00081.33325.6492.13718.014568.09019661118.00093.16729.3812.44820.635650.74319671145.00095.41730.0912.50821.133666.45819681887.000157.25049.5904.13334.8281098.34719691275.400106.28333.5182.79323.540742.35919702172.000181.00057.0804.75740.0891264.2341971934.40077.86724.5562.04617.246543.87719721308.700109.05834.3932.86624.155761.74219732355.000196.25061.8895.15743.4661370.75119741074.10089.50828.2272.35219.825625.19019752259.300188.27559.3744.94841.7001315.04819761818.400151.53347.7883.98233.5621058.41719771490.200124.18339.1623.26427.505867.38519781039.70086.64227.3232.27719.190605.16819791331.800110.98335.0002.91724.581775600128.96740.6713.38928.564900.79619811985.700165.47552.1844.34936.6501155.79619822060.400171.70054.1474.51238.0291199.27619832109.200175.76755.4304.61938.9291227.68119841452.000121.00038.1593.18026.800845300117.94237.1943.10026.122823.7891986963.70080.30825.3262.11117.787560.93119871193.50099.45831.3652.61422.028694.68819881483.700123.64238.9923.24927.385863.60219891230.400102.53332.3352.69522.709716.16619901668.000139.00043.8353.65330.786970.87619911540.062128.33840.4733.37328.425896.40819922040.700170.05853.6304.46937.6651187.80919931315.200109.60034.5632.88024.275765.52519942522.600210.21766.2945.52446.5601468.30419951636.200136.35042.9993.58330.199952.36619961478.700123.22538.8603.23827.292860.692合计63155.365262.9471659.723138.3101165.65836760.200平均1540.375128.36540.4813.37328.431896.590龙家山站逐年逐月最大流量资料（1月～12月）表2.3.1.3单位：m3/s年份1月2月3月4月5月6月7月8月9月10月11月12月19561220.0859.0178.0120.0181.057.2262.031.2195797.043.5479.01710.0766.0963.085.0178.0468.0801.0125.072.2195898.9190.0353.068.01050.0467.0564.0136.0199.0117.034.327.6195941.4355.0687.0726.01150.01780.0278.0666.0945.040.2182.0103.0196079.345.6911.0745.0780.0248.0129.01480.0262.0194.0414.0481.0196154.2297.0650.01920.0380.02080.01060.01990.01850.0829.0152.0116.01962103.071.0561.0634.0934.02240.01290.0257.0458.0315.0244.0103.0196344.6100.0236.0171.0394.0150.079.1102.062.848.4470.069.21964388.0171.0564.01880.0527.02720.0219.0740.0177.0111.046.132.0196534.974.5263.0552.0850.0665.0123.0202.0102.0130.0868.0156.01966285.0188.0128.0667.0443.0447.01060.0144.071.3580.061.561.5196741.4275.0608.0629.0555.0807.02310.0253.0121.039.1123.054.3196842.572.6612.0608.0809.02990.03010.0354.0189.0128.0405.0149.01969180.0156.0343.0532.01250.0304.0158.02640.0392.0602.0125.052.11970225.0118.0620.01670.01490.0891.0415.0290.01010.01110.0152.0603.0197189.4476.0240.0336.0480.0964.0234.0430.0182.085.144.185.1197232.7158.063.41470.0560.0660.0130.02680.0223.0164.0403.0304.01973418.0308.0301.01980.01080.01220.01010.0974.0412.01070.0228.064.11974207.0614.0124.0232.0261.0717.0583.0663.094.0131.071.4280.01975172.0312.0661.0676.02130.01880.0243.0986.0269.0420.0619.0233.0197651.3226.0354.0476.01050.01250.02970.01340.0422.0364.0151.054.81977101.099.183.7436.01130.01590.0335.0236.0140.0107.059.088.71978192.054.0272.0489.01390.0415.0154.0387.089.876.537.933.5197960.2205.0814.0935.0834.01340.0401.0385.0317.063.434.829.7198068.7578.0548.01030.01490.0271.0810.0851.0263.0218.057.943.8198199.2705.0480.02520.01070.0760.0550.0626.0414.0664.0725.0102.0198268.2610.0402.0832.01430.04560.0397.0680.0486.0247.0458.0204.01983170.01010.01710.01060.02280.03600.0284.0178.0138.073.439.455.8198446.377.716.01250.01680.01450.0468.0932.01160.0152.4120.086.0198574.6922.0463.0929.0845.01010.0290.0502.0417.094.661.377.8198656.2110.0783.0883.0270.0490.0532.0125.0125.060.880.745.6198754.6164.0256.0646.0350.0395.0181.0215.0128.0215.0426.0173.01988176.0666.0961.01460.01450.0328.0196.0383.0252.078.551.056.61989271.0367.0207.0399.01980.0972.01140.0123.085.297.556.144.41990244.0723.0808.01070.0608.0900.01530.0565.0479.0479.0582.0526.01992229.0574.01500.01290.01130.01260.02680.0145.0490.070.760.8106.01993153.0327.0458.0223.0802.0906.01400.0393.0116.0260.0148.096.3199455.8805.0834.01570.01600.02580.02200.01880.0247.0761.0108.0676.01995522.0723.0253.0810.0464.01380.0132.0792.0148.0386.078.791.51996141.084.5763.0725.0458.0374.0706.0460.0260.086.959.264.02.3茶陵县气象站1956～2000年历年1～12月逐月降雨量统计见表2.3.2.1。茶陵县气象站1956～2000年历年1～12月逐月降雨量统计表表2.3.2.1年份1月2月3月4月5月6月7月8月9月10月11月12月合计月平均195646.1114.5215.1139.8353.686.069.445.953.228.888.610.11251.1104.3195767.9164.1139.3201.1163.6131.720.3118.9136.9212.721.345.41423.2118.6195856.460.3112.9134.4300.8229.5165.225.025.983.58.826.71229.4102.4195938.9251.2131.1116.9311.0226.8189.3116.829.623.8109.265.41610.0134.2196029.551.7283.7149.3221.279.863.6144.424.874.4120.018.51260.9105.1196117.8112.3185.0319.2156.2264.2129.6252.8123.18.381.258.81708.5142.419624.251.1139.9163.4296.2409.074.7143.154.388.0126.532.91583.3131.919639.068.790.050.380.064.024.196.310.580.6164.561.4799.466.61964113.493.3137.4289.7109.1214.0103.280.444.746.42.79.61243.9103.7196518.259.9164.0178.0149.3134.444.7103.440.430.9213.380.01216.5101.4196682.669.385.6260.667.8106.1258.49.62.1175.833.964.41216.2101.4196735.0104.2238.4146.8202.3191.2163.1165.571.910.685.232.61446.8120.6196858.257.7208.8175.4183.3428.7238.795.9204.819.6137.693.31902.0158.5196977.236.0116.0135.0189.1101.344.1276.019.6115.333.612.81156.096.31970369.867.3211.1306.3323.0176.3116.8102.5150.0107.557.4125.22113.2176.1197136.063.267.272.1257.8151.420.7132.011.138.412.944.0906.875.619723.9116.946.0257.9213.186.328.2120.0107.959.8132.2100.21272.4106.0197371.553.9101.5251.2253.4226.8254.9128.121.3120.4140.10.41623.5135.3197490.387.943.4132.1100.2149.9106.665.43.779.714.169.2942.578.5197549.969.3247.2249.2379.2111.324.8334.720.568.491.555.01701.0141.8197625.1108.5150.8160.5136.1297.3382.5142.7102.3147.1108.917.91779.7148.3197782.638.446.4183.9390.4334.079.858.030.364.517.364.91390.5115.9197874.720.1204.1225.2253.0121.096.764.631.219.095.131.61236.3103.0197975.068.8191.1166.7233.5266.646.2113.042.40.16.615.61225.6102.1198079.9207.1149.3304.3302.6120.073.7175.619.179.03.915.61530.1127.5198189.6110.2219.6410.5185.2146.086.8105.154.4170.6161.24.91744.1145.3198225.8178.387.2146.2248.7407.580.299.1163.379.0119.747.71682.7140.2198381.0229.9173.1204.3199.4567.057.667.5128.128.67.759.01803.2150.3198435.130.7115.3323.3321.773.184.8118.963.750.443.459.71320.1110.0198536.1286.7169.4157.8103.0116.060.8171.082.17.953.539.81284.1107.0198629.463.9133.2163.957.6186.2114.817.038.182.240.94.1931.377.6198739.881.9132.8157.4152.269.730.077.147.5187.6147.31.91125.293.8198857.1151.4152.0181.3262.281.455.068.845.635.44.129.11123.493.61989164.8101.687.694.7252.0139.2198.744.250.963.428.421.11246.6103.91990120.3167.3198.1164.7218.7158.9200.177.4110.7127.7157.321.71722.9143.61991156.246.9277.9136.6109.339.834.7114.2119.590.480.036.61242.1103.5199257.5161.7429.6105.2180.6220.8208.843.97.65.77.084.01512.4126.0199394.9101.0100.1124.4192.1165.4209.7165.831.896.848.235.41365.6113.8199417.1133.2139.8214.4231.6447.0152.8245.350.887.349.3172.71941.3161.81995123.4149.6113.0162.1113.6289.623.6162.4177.671.332.712.41431.3119.31996100.730.9234.3149.9198.2122.8154.9440.444.38.710.920.51516.5126.41997102.195.5243.1175.5189.0250.7169.1396.4290.5170.0111.4128.82322.1193.51998204.1155.4310.9110.9289.9325.129.351.541.218.655.638.01630.5135.9199950.225.0127.0234.1306.8175.4344.4232.7107.927.423.91.31656.1138.0200080.659.0171.1227.4195.6230.782.6137.8175.4215.262.211.71649.3137.4合计3278.94555.87320.48413.99633.28919.95198.05947.03212.63406.83151.11981.965019.55418.3平均72.86101.24162.68186.98214.07198.22115.51132.1671.3975.7170.0244.041444.88120.412.3茶陵县气象站1956～2000年历年1～12月逐月蒸发量统计见表2.3茶陵县气象站历年1～12月逐月蒸发量统计表（mm）表2.3.3.1年份1月2月3月4月5月6月7月8月9月10月11月12月合计（mm）1956128.9115.4244.3195755.041.662.7121.4142.8189.7386.0252.1186.5136.5106.956.01737.2195859.264.486.3171.5132.2186.8287.1276.0223.1124.5100.1103.11814.3195960.542.5104.0129.896.1167.9261.3209.0200.1198.564.732.81567.2196048.578.095.692.493.9184.8293.1207.4206.1150.370.876.41597.3196178.454.475.8120.2159.8186.4262.1202.4119.3120.674.255.01508.6196278.892.8101.8112.5114.6129.4277.6239.7181.3139.368.974.61611.3196394.767.398.2133.9227.5184.9341.3339.0265.3140.875.075.32043.2196443.648.372.7134.3164.1146.0303.9215.3211.6120.5130.568.61659.4196584.253.498.290.9158.6160.0285.7228.5174.8120.280.450.61585.5196645.762.885.284.5171.1150.1231.3270.7256.4137.5110.8606.11967无记录196872.555.672.1108.5121.2118.0235.3197.1200.1120.375.356.21432.2196943.739.080.7120.1158.8154.9256.8193.1184.6129.488.191.21540.4197047.346.642.8112.4122.1167.5227.5205.1138.5126.488.942.21367.3197175.171.372.287.2132.2187.1298.4211.2161.4139.1124.674.91634.7197276.138.7131.862.2149.8196.3260.0228.3128.096.870.049.31487.3197335.857.651.994.982.1161.0190.0229.3152.1120.9104.1111.21390.9197444.864.895.7127.9145.7147.5193.5204.5202.7154.2111.644.41537.3197545.161.864.2100.562.5179.9239.8162.8162.6105.868.963.01316.9197676.064.848.290.5153.7143.0209.1241.1179.611.2579.564.61462.6197723.273.4106.1103.1119.1121.5222.8201.0160.2124.2101.777.91434.2197852.857.354.499.6111.6158.3283.9228.1179.3142.670.073.21511.1197933.351.948.786.995.4113.7243.6195.1134.5187.6143.394.31428.3198037.140.346.373.414.55191.6218.6144.0154.6137.9110.984.41384.6198153.636.468.579.4132.1160.0209.2226.3168.872.946.186.11339.4198265.229.461.791.1120.4118.5234.9182.3107.6110.858.365.21245.4198341.043.561.4106.7140.1151.2253.1217.3161.5106.5113.577.31473.1198447.126.660.670.6118.5199.7263.3196.2140.9105.790.140.91360.2198537.531.439.0115.3131.3175.4258.7190.4135.0126.781.454.61376.7198657.350.274.389.2174.8145.7208.4220.8201.6127.667.182.01499.0198754.473.267.7115.3136.2148.6210.7222.5137.794.948.088.21397.4198844.034.568.5101.5117.6205.6253.1180.0116.7110.1109.375.11416.0198963.175.065.472.9101.5156.3208.9182.5137.0154.1102.669.71389.0199043.638.381.5108.3143.6186.1265.2237.8145.3135.084.769.91539.3199122.555.857.593.9167.0204.2318.3239.9162.3140.190.555.71607.7199263.747.543.5110.0118.3155.8212.7238.0165.2176.1153.471.81556.0199347.568.577.598.5988143.2208.9181.5150.9139.470.181.61366.4199463.140.355.396.1156.0156.6212.3180.9140.6107.399.743.81352.0199542.551.161.686.0162.3170.2258.4207.3187.199.1106.691.81524.0199648.081.761.2100.0126.7174.7200.6153.9168.0146.176.184.61421.6199763.045.979.576.3169.7144.0145.9153.597.797.382.841.01196.6199827.952.959.3155.2146.5112.7266.9305.6211.3197.2103.174.01712.6199958.384.768.4106.9131.6164.9153.7154.6165.9104.884.596.81375.1200046.734.264.273.3141.2172.3231.3171.2127.678.061.260.01261.22.4、径流2.4.1、龙家山站基本资料处理根据龙家山站资料统计，汛期4月～8月雨量约占全年总雨量的58.9%，以4、5、6月份雨最多，分别占全年的14.7%、14.9%、14.0%。最大一日雨量龙家山站起来232mm（1983年6月19日）。本次龙家山站设计典型年，按当年4月～下年3月计算。见表2.4.1.1。龙家山站设计逐年各月有关径流参数计算（当年4月～下年3月）见表2.4.1.2。龙家山站逐年逐月流量资料（当年4月～下年3月）表2.4.1.1单位：m3/s年份４月5月6月7月8月9月10月11月12月1月2月3月1956234.0382.0159.072.3060.049.6031.6050.4027.2032.50128.0164.01957259.0232.0195.045.8063.464.00147.063.3045.2042.8089.60111.01958161.0337.0245.0109.052.555.8048.2029.3022.5027.80130.0133.01959135.0272.0431.0107.098.5111.031.9055.4047.4045.4030.20187.01960182.0305.0144.051.70259.082.6067.2075.9084.9042.0091.80184.01961401.0153.0478.0142.0294.0391.0103.074.7056.6052.7033.30113.01962170.0282.0610.0235.096.098.7070.1095.3049.2029.7048.6077.00196354.258.845.2030.1029.927.4023.8077.6037.6091.0082.90177.01964305.0161.0363.086.10131.463.6050.2031.1024.9021.7028.5066.501965145.0150.0155.047.1050.7047.7048.30125.090.5085.20100.069.901966215.0117.0125.0180.043.7029.2069.7037.2046.1031.3082.60119.01967210.0181.0145.0158.064.0051.6030.8038.9032.8026.1050.10137.01968183.0136.0632.0354.0121.066.0050.0081.5050.3087.3071.00126.01969129.0239.0105.052.90191.065.60113.059.3036.3054.6075.00146.01970358.0492.0222.0127.0101.0206.0162.076.40152.059.5070.9071.40197169.1161.0185.042.70107.061.4044.8031.5030.1024.6068.7033.101972291.0195.0111.038.50177.084.8078.00106.0101.0148.0107.0119.01973454.0399.0311.0274.0155.0127.0124.089.4047.6048.10123.058.40197486.794.8190.0147.0143.049.1047.5041.5045.0060.1096.30254.01975291.0576.0259.087.00191.098.90126.0140.080.0044.1059.30122.01976247.0217.0316.0347.0153.088.80105.075.6043.6071.4069.6047.601977168.0287.0453.0145.077.2058.1050.4033.2029.7051.0033.0098.001978196.0259.0149.053.5069.6043.6034.0028.5024.5033.3064.00152.01979159.0238.0319.085.9090.9099.0039.5026.3024.9030.70123.0130.01980340.0389.0102.093.60136.074.5058.2038.3032.3040.6093.00165.01981604.0195.0216.0125.0114.075.30122.0172.063.8045.70170.0136.01982187.0269.0515.0113.0151.0132.080.70148.0113.099.90216.0349.01983289.0403.0436.091.4066.1060.1043.3028.3027.1028.7041.3062.501984328.0322.0195.081.0087.00150.071.0045.3040.2041.70236.0223.01985205.0114.0160.074.10118.0120.049.2038.5035.8029.8056.00107.01986185.093.0158.0151.057.9032.2029.4039.7024.7022.4031.7084.901987196.0141.087.8061.8070.1049.80216.0153.079.0050.60131.0277.01988257.0332.0131.056.9072.3080.5038.3030.7026.4056.10108.076.001989124.0327.0173.0173.059.6043.0035.6032.4022.7059.60114.0177.01990301.0165.0190.0148.0120.0117.086.40136.054.0051.8891.88138.61991232.1241.5253.5129.8123.787.0172.3665.752.0267.50196.0419.01992273.0235.0259.0326.076.5084.1038.2030.9035.5055.0057.20124.01993122.0159.0259.0200.0123.058.6058.4055.9043.1031.80127.0176.01994289.0265.0473.0283.0374.0129.0138.051.80185.0151.0200.0137.01995229.0162.0310.0113.0129.045.4080.5044.4034.9054.8044.50142.0合计9264.19737.110264.55239.24698.03459.02913.62654.22099.42128.03770.05689.9平均231.60243.43256.64130.98117.4586.4872.8466.3652.4953.2094.25142.25龙家山站设计逐年各月有关径流参数计算（当年4月～下年3月）表2.4.1.2年份年流量（m3/s）月均流量（m3/s）年径流量(108月均径流量(108径流模数（公升/秒.km2）径流深度(mm)19561390.600115.88336.5453.04525.666809.41219571358.100113.17535.6912.97425.066790.49519581351.100112.59235.5072.95924.937786.42119591551.800129.31740.7813.39828.642903.24019601570.100130.84241.2623.43928.979913.89219612292.300191.02560.2425.02042.3091334.25619621861.600155.13348.9234.07734.3601083.5621963735.50061.29219.3291.61113.575428.10519641333.000111.08335.0312.91924.603775.88619651114.40092.86729.2862.44120.568648.64719661095.80091.31728.7982.40020.225637.82119671125.30093.77529.5732.46420.770654.99219681958.100163.17551.4594.28836.1411139.73119691266.700105.55833.2892.77423.379737.29519702098.200174.85055.1414.59538.7261221.2781971859.00071.58322.5751.88115.855499.98919721556.300129.69240.9003.40828.725905.86019732210.500184.20858.0924.84140.7991286.64319741255.000104.58332.9812.74823.164730.48519752074.300172.85854.5134.54338.2851207.36719761781.600148.46746.8203.90232.8831036.99819771483.600123.63338.9893.24927.383863.54419781107.00092.25029.0922.42420.432644.34019791366.200113.85035.9042.99225.216795.21019801562.500130.20841.0633.42228.839909.46819812038.800169.90053.5804.46537.6301186.70319822373.600197.80062.3785.19843.8101381.57719831576.800131.40041.4383.45329.103917.79219841820.200151.68347.8353.98633.5951059.46519851107.40092.28329.1022.42520.439644.5731986909.90075.82523.9121.99316.794529.61619871513.100126.09239.7643.31427.927880.71519881265.200105.43333.2492.77123.352736.42219891340.900111.74235.2392.93724.749780.48419901599.780133.31542.0423.50429.527931.16819911940.182161.68250.9884.24935.8101129.30219921594.400132.86741.9013.49229.428928.03619931413.800117.81737.1553.09626.095822.91619942675.800222.98370.3205.86049.3871557.47619951389.500115.79236.5163.04325.646808.772合计61917.9605159.8301627.204135.6001142.81936039.960平均1547.949128.99640.6803.39028.570900.9992.4.2、龙家山站径流量频率计算选取龙家山站当年4月～下年3月年径流量资料（见表2.4.2.1）作频率分析计算，成果见表2.4.2.2。龙家山站逐年径流量资料表（当年4月～下年3月）表2.4.2.1序号年份年径流量(108备注1195636.5452195735.6913195835.5074195940.7815196041.2626196160.2427196248.9238196319.3299196435.03110196529.28611196628.79812196729.57313196851.45914196933.2891519705557517197240.90018197358.09219197432.98120197554.51321197646.82022197738.98923197829.09224197935.90425198041.06326198153.58027198262.37828198341.43829198447.83530198529.10231198623.91232198739.76433198833.24934198935.23935199042.04236199150.98837199241.9013819933732040199536.516合计项1627.205平均40.680龙家山站逐年径流量频率计算表表2.4.2.2编号P=m/（n+1）（%）年径流量(108相应年份备注12.4470.320199424.8862.378198237.3260.242196149.7658.0921973512.2055.1411970614.6354.5131975717.0753.5801981819.5151.4591968921.9550.98819911024.3948.92319621126.8347.83519841229.2746.82019761331.7142.04219901434.1541.90119921536.5941.43819831639.0241.26219601741.4641.06319801843.9040.90019721946.3440.78119592048.7839.76419872151.2238.98919772253.66371036.54519562458.5436.51619952560.9835.90419792663.4135.69119572765.8535.50719582868.2935.23919892970.7335.03119643073.1733.28919693175.6133.24919883278.0532.98119743380.4929.57319673482.9329.28619653585.3729.10219853687.8029.09219783790.2428.79819663892.6823.91219863995.1222.57519714097.5619.32919632.4.3龙家山站典型年份设计按设计丰水年P=10%,设计枯水年P=90%、中水年50%确定典型年。计算成果见表2.4.3.1。各设计频率下年径流成果表见表2.4.3.2。P-Ⅲ型曲线配线图见图2.4.3.1。龙家山站设计代表年逐月流量资料（当年4月～下年3月）表2.4.3.1单位：m3/s设计保证率(%)10%20%50%80%90%实际保证率(%)9.76%21.95％51.22%80.49%90.24%典型年份1973.4～1974.31991.4～1992.31977.4～1978.31967.4～1968.31966.4～1967.34月454.00232.07168.00210.00215.005月399.00241.50287.00181.00117.006月311.00253.49453.00145.00125.007月274.00129.84145.00158.00180.008月155.00123.7077.2064.0043.709月127.0087.0158.1051.6029.2010月124.0072.36050.4030.8069.7011月89.4065.7033.2038.9037.2012月47.6052.0229.7032.8046.101月48.1067.50051.0026.1031.302月123.0196.0033.0050.1082.603月58.40419.0098.00137.00119.00龙家山站设计年径流成果表（当年4月～下年3月）（40年均埴:40.680108m3，CV=0.3，CS表2.4.3P(1%)Kp年径流量(108备注0.012.520102.5140.102.19089.0890.202.08084.6140.332.01081.7670.501.94078.9191.001.83074.4442.001.71069.5635.001.54062.64710.001.40056.95220.001.24050.44350.000.97039.46075.000.78031.73090.000.64026.03595.000.56022.78199.000.44017.8992.4.4××电站逐年逐月平均流量设计龙家山水文站(F=4515km2)位于××电站坝址上游9.9km处，坝址控制集雨F=4566km2。该工程直接参证龙家山水文站。设计逐年逐月平均流量按面积比修正系数0.736次方进行插补延长推求,求得××电站逐年逐月平均流量成果见表2.4.××电站设计逐年各月有关径流参数计算（当年4月～下年3月）见表2.4.4.2。××电站逐年逐月流量资料（当年4月～下年3月）表2.4.4.1单位：m3/s年份4月5月6月7月8月9月10月11月12月1月2月3月1956235.943385.171160.32072.90060.49850.01231.86250.81827.42632.770129.063165.3611957261.150233.926196.61946.18063.92664.531148.22063.82545.57543.15590.344111.9211958162.337339.798247.034109.90552.93656.26348.60029.54322.68728.031131.079134.1041959136.121274.258434.578107.88899.318111.92132.16555.86047.79345.77730.451188.5521960183.511307.532145.19552.129261.15083.28667.75876.53085.60542.34992.562185.5271961404.329154.270481.968143.179296.441394.246103.85575.32057.07053.13733.576113.9381962171.411284.341615.064236.95196.79799.51970.68296.09149.60829.94749.00377.639196354.65059.28845.57530.35030.14827.62723.99878.24437.91291.75583.588178.4691964307.532162.337366.01386.815132.49164.12850.61731.35825.10721.88028.73767.0521965146.204151.245156.28747.49151.12148.09648.701126.03891.25185.907100.83070.4801966216.785117.971126.038181.49444.06329.44270.27937.50946.48331.56083.286119.9881967211.743182.503146.204159.31264.53152.02831.05639.22333.07226.31750.516138.1371968184.519137.129637.246356.939122.00466.54850.41582.17750.71888.02571.589127.0461969130.071240.984105.87253.339192.58666.145113.93859.79236.60155.05375.623147.2121970360.972496.084223.843128.054101.838207.710163.34577.034153.26259.99471.48971.993197169.674162.337186.53643.054107.88861.91045.17231.76130.35024.80469.27033.3751972293.416196.619111.92138.820178.46985.50478.647106.880101.838149.229107.888119.9881973457.769402.312313.582276.275156.287128.054125.02990.14247.99548.499124.02158.885197487.42095.587191.577148.220144.18749.50847.89441.84545.37460.59997.099256.1091975293.416580.782261.15087.722192.58699.721127.046141.16280.66444.46659.792123.0131976249.050218.801318.623349.881154.27089.537105.87276.22843.96271.99370.17847.9951977169.395289.382456.760146.20477.84158.58250.81833.47629.94751.42333.27498.8141978197.627261.150150.23753.94470.17843.96234.28228.73724.70333.57664.531153.2621979160.320239.976321.64886.61391.65599.82239.82826.51825.10730.955124.021131.0791980342.822392.229102.84794.377137.12975.11858.68338.61832.56840.93793.772166.3701981609.014196.619217.793126.038114.94675.925123.013173.42864.33046.079171.411137.1291982188.552271.233519.275113.938152.253133.09681.370149.229113.938100.729217.793351.8971983291.399406.345439.61992.15966.64960.59943.65928.53527.32528.93841.64363.0191984330.723324.673196.61981.67287.722151.24571.58945.67640.53442.046237.959224.8511985206.702114.946161.32874.715118.980120.99649.60838.82036.09730.04756.465107.8881986186.53693.772159.312152.25358.38132.46729.64440.03024.90522.58631.96385.6051987197.627142.17088.52962.31370.68250.213217.793154.27079.65651.020132.087279.2991988259.133334.756132.08757.37272.90081.16838.61830.95526.61956.566108.89776.6311989125.029329.715174.436174.43660.09543.35735.89632.66922.88860.095114.946178.4691990303.499166.370191.577149.229120.996117.97187.117137.12954.44852.31192.643139.7711991233.996243.505255.594130.918124.72787.73272.96166.24052.44968.060197.627422.4781992275.266236.951261.150328.70677.13584.79838.51731.15735.79555.45757.675125.0291993123.013160.320261.150201.660124.02159.08658.88556.36443.45832.064128.054177.4611994291.399267.200476.927285.349377.105130.071139.14652.230186.536152.253201.660138.1371995230.901163.345312.573113.938130.07145.77781.16844.76935.19055.25544.869143.179合计9340.979817.9310350.75282.734737.003487.722937.752676.232116.842145.653801.285737.15平均233.524245.448258.768132.068118.42587.19373.44466.90652.92153.64195.032143.429××电站坝址处设计逐年各月有关径流参数计算表（当年4月～下年3月）表2.4.4.2桩号0+000年份年流量（m3/s）