水电站初步设计报告

水电站初步设计报告1综合说明书河流属XX省XX河上游的XX省XX县辖区的XX支流，坝址控制集雨植被状况良好，XX水电站以上流域内没有兴建蓄水工程，仅有二座大坝正常高水位307.00m，设计水头73m。设计洪水位（5%)308.40m,下泄流量246.40m3/s。校核洪水位（1309.35m，％）XX水电站主要建筑物有拦河坝、引水隧洞、压力输水钢管、发至本支流上的XX阁水电站库尾发电。洞首位于拦水管引水至发电厂房，压力管全长170m。村级公路已通至坝址及发电厂房近旁（相距约200m整个枢纽区域交通较为方便。架设10kv电站装设二台卧轴混流式水轮机，型号为HLA550-WJ-55，单机转速1000r/min，额定效率91机端电压0.4kv,采用扩大单元接拦河坝分两期施工，右侧为一期,在左侧河床开挖明渠作为一期工程林地、耕地与房屋的淹没界线分别为307.00m、308.17m和发生和结算，整个工程建设期1年，开工后第二年初开始发生效益，本工程全部投资内部收益率为9.80%，财务净现值136.45万元（i=0.06）大于零，投资回收期9.69年，投资利润率8.88%，投资利水文1流域面积全流域Km2485.0坝址以上Km230.6厂房以上Km237.02利用水文系列年限年39.01963-2001年3水文参证站XX站4多年平均年径流量亿m30.2925代表性流量大坝设计洪峰流量m3/s246.40厂房设计洪峰流量m3/s279.66大坝校核洪峰流量m3/s400.00厂房校核洪流量m3/s375.07水库1水库水位校核洪水位m309.35设计洪水位m308.40正常高水位m307.0死水位m299.0序号名称单位数量备注2正常高水位相应水库面积m2200003正常高水位回水长度m5004水库容积总库容万m3调节库容万m38死库容万m30.5电站特性1装机容量Kw2保证出力Kw3多年平均年发电量3304年利用小时数h33005设计水头H6最低尾水位m225.7淹没与占用淹没耕地亩4其中水田3亩林地亩人行道Km0.2主要建筑物1拦河坝序号名称单位数量备注型式浆砌块石重力坝非溢流坝顶高程m308.60最大坝高m坝顶长m65消能方式挑流2冲砂闸型式方形底孔底板高程m294.00孔口尺寸m2×23引水系统引水隧洞型式1.6×1.6m+1/3圆弧顶隧洞总长m2470其中支洞长100米压力管长m圆形钢管管径m额定输水流量m3/s4厂房地基特性中等强度砂岩主厂房尺寸m23×9.0长×宽主要机电设备序号名称单位数量备注1水轮机型号HLA550-WJ-55二台Kw549单机额定流量m3/s0.88额定转速r/min设计水头m最大工作水头m最小工作水头m2发电机型号SFW500-6/850二台额定容量Kw500额定电压KV0.4功率因素0.83主变压器型号S9-1250/10.5/0.4台1容量KVA10.5/0.44输电线路序号名称单位数量备注电压等级KV回路数回1长度Km1接入点XX乡10KV农网5厂房起重机型式地面操作电动葫芦跨度m最大起重量t施工1主体工程量土方挖填m32700明挖石方m3510石方洞挖m2470浆砌砖墙m3浆砌块石m32800混凝土及钢筋混凝土m3964金属结构与钢筋制安t612主要建筑材料木材m3水泥t850序号名称单位数量备注钢筋t3施工动力及来源供电县电网供给排水县电网供给4施工年限年15施工导流导流方式导流标准枯水期5年一遇经济指标1静态总投资万元419.432总投资万元419.43建筑工程万元211.60机电设备及安装工程万元77.00金属结构及安装工程万元26.40临时工程万元13.49库区淹没及占用补偿万元15.00其它费用万元37.81基本预备费万元38.13价差预备费万元0序号名称单位数量备注3主要经济指标单位千瓦投资元/KW4194单位电能投资发电成本0.139财务内部收益率%9.80上网电价0.28静态投资回收年限年8.4含建设期2水文气象XX水电站上游至今未建蓄水工程，仅有径流式电站两座，流域1999年观测资料统计，多年平均年降水量1489mm，最大年降水量降水量年内分配很不均匀，主汛期4～7月降水量占全年降水量的60%，10～12月期间降水量仅占年值的12%。年降水日数平均为150对湿度变化不大，最大月平均相对湿度82%，发生在6月份，最小在XX水电站流域无水文测站，但邻近流域修河干、支流设有一系列水文、水位站，主要有XX、XX、XX、XX、XX、XX等站，这些测站均为国家基本水文观测站，水文资料由水文年鉴刊印。XX水电站水殿流量站，观测水位、流量、降水量等，1958年增测含沙量，1963XX站流量观测时间为1959～1980年，XX站流量观测时间为XX水文站系修河支流XX水系上一水文站，1961年由XX省水利厅设立，观测项目有水位、降水量，1963年增测流量及比降至今，相对控制面积较接近，且XX小流域内植被情况良好，地形及下垫面水电站坝址径流计算由XX水文站径流通过水文比拟法（面积比的11962年两年XX站仅有水位观测资料，采用XX站历年综合水位流量XX站的上游未修建大中型蓄、引、提水工程、现有的小型水电XX站属国家基本测站，有先进的观测设备，所测资料经分析处年份XX站3/s)排序经验频率年份XX站3/s)排序经验频率(%)6111.14716.67827.3152.38625.683.338337.14634.434095.24846.7354.76645.5785.71857.3850.00654.6192.86866.1866.67667.5545.24876.5259.5267819.05888.2642.86683.434197.62899.9726.19699.9923.81906.2364.29921.43918.7238.105.6678.57926.0571.435.9173.81939.7328.5724.76949.3933.335.6380.959512.1749.52511.90967.3947.628.6240.48978.7435.719.6430.959814.7412.384.6988.109911.61614.294.6690.48006.4861.90806.6957.14015.9176.19816.1369.05平均7.98根据XX站实测丰、中、枯三个代表年的逐日径流资料，通过面电站坝址处多年平均流量为0.938m3/s，多年平均年径流量为0.292一月二月三月五月六月七月八月九月十月十一月十二月0.390.310.580.620.350.630.810.400.300.340.300.520.570.830.396.920.550.780.710.380.290.280.340.460.600.570.493.190.540.920.680.390.290.280.340.530.800.590.390.682.030.610.360.290.260.360.430.620.912.180.840.860.570.350.290.250.360.380.490.780.552.180.740.550.360.290.230.410.400.400.580.352.880.660.540.360.360.230.440.360.442.750.900.620.510.360.340.230.480.320.482.292.430.530.470.340.290.430.460.680.280.392.184.020.500.460.320.294.160.450.630.246.862.382.270.480.450.320.290.510.480.214.560.656.980.440.440.330.300.700.510.390.250.423.040.430.460.360.270.520.430.370.230.940.320.420.570.940.270.410.350.340.390.800.312.030.920.420.500.810.270.360.350.370.870.840.757.730.780.410.480.720.270.330.330.300.450.660.9225.280.640.390.680.570.270.310.280.480.480.546.270.710.380.560.440.260.310.294.750.453.850.380.510.410.250.310.303.280.392.760.360.460.400.250.300.590.970.340.570.520.560.370.260.280.470.774.920.380.450.640.570.360.260.270.453.220.525.090.780.410.510.960.340.250.260.412.522.032.039.760.430.450.870.340.250.400.606.430.948.470.620.620.330.260.300.592.270.885.263.170.510.600.330.270.270.489.740.852.950.962.160.440.500.320.300.250.543.396.580.600.865.270.450.320.270.292.182.200.472.730.860.923.170.430.310.260.280.415.610.780.922.160.400.300.260.340.900.360.690.900.410.25三月七月十月3.222.534.765.162.885.196.713.322.512.812.484.314.76.893.1957.24.566.435.93.182.432.312.813.784.944.734.0826.44.457.645.663.22.392.332.854.426.644.843.265.615.073.012.432.192.963.545.137.526.987.154.742.92.382.072.943.164.016.464.546.154.572.942.413.363.273.294.792.9223.85.424.432.993.013.632.943.669.4822.77.424.183.012.833.938.772.663.9320.14.363.912.782.433.593.835.612.313.2533.23.82.652.3834.43.765.2256.73.963.732.632.384.223.9637.75.3757.73.633.622.722.515.784.223.252.043.4925.13.543.82.942.254.313.523.057.782.623.474.747.752.233.422.872.813.246.582.537.573.474.156.672.232.982.883.057.26.916.1763.96.463.363.945.992.232.692.732.463.765.437.622095.263.225.594.682.22.62.333.993.954.4351.85.913.184.623.652.182.582.388.2739.33.7331.89.884.183.372.052.558.242.4427.13.2122.88.962.943.83.272.072.514.918.012.794.734.314.653.062.132.333.888.356.3640.73.715.34.682.972.243.7326.64.2842.16.473.424.27.92.832.082.133.4220.880.73.563.687.222.812.13.274.9253.27.789.6705.132.722.132.54.918.537.2943.58.6626.24.24.952.722.272.273.9680.57.0124.47.923.624.132.672.452.074.52854.44.942643.63.752.672.222.363.8722.67.087.6126.23.572.592.132.339.63.3546.46.437.573.322.452.837.463.015.717.463.372.07一月二月三月五月六月七月八月九月十月十一月十二月3.212.376.245.276.53.857.14.435.452.983.382.335.46.259.418.133.884.334.52.733.452.34.955.894.622.14.53.443.984.012.833.396.918.514.284.6459.5213.853.453.663.863.327.34.554.2222.327.56.043.383.625.293.33.086.057.7434.827.53.593.233.454.316.514.047.8621.87.742.783.313.484.564.533.5320.430.35.738.335.283.043.46.984.1827.95.177.474.73.413.464.863.83.057.9343.124.18.957.196.153.623.454.084.132.985.626.56.154.439.213.323.373.772.754.629.774.449.193.434.743.293.574.252.833.933.998.042.564.83.163.484.862.43.58.7652.363.973.53.285.022.623.359.638.0925.25.412.347.464.523.353.342.733.498.936.627.4557.073.313.213.562.647.415.235.443.87.753.743.073.682.647.184.536.754.723.3922.83.453.073.792.69.886.784.563.443.133.513.083.672.497.828.057.873.713.28.273.833.023.392.595.986.775.286.383.7256.423.933.323.412.675.245.754.445.275.085.434.19.213.652.664.655.193.64.198.53.765.337.13.192.667.012.844.045.57.323.94.463.062.559.912.813.444.9951.28.945.998.962.922.4520.54.825.736.745.385.663.022.244.689.676.026.794.8732.328.664.977.614.095.93.165.464.422.982.719.263.785.854.64.532.924.973.53.012.597.993.195.414.895.622.674.697.6842.326.564.033.596.513.45一月二月三月五月六月七月八月九月十月十一月十二月0.390.290.750.640.790.470.860.620.540.660.360.410.280.650.760.620.980.470.520.540.330.420.280.600.710.562.670.540.420.480.490.340.410.840.520.567.202.540.470.420.440.470.400.372.150.880.550.512.703.330.730.410.440.640.400.372.190.730.944.213.330.430.390.420.520.790.490.952.640.940.340.400.420.550.550.432.473.660.690.640.370.410.840.510.383.370.630.900.570.410.420.590.460.370.965.212.910.870.740.440.420.490.500.360.683.210.740.540.400.410.460.500.330.560.540.410.570.400.430.510.340.480.480.970.312.030.580.380.420.590.290.420.600.290.480.420.400.610.320.410.983.050.650.280.900.550.410.400.620.330.420.800.900.260.600.860.400.390.430.322.240.900.630.660.260.460.940.450.370.450.320.870.550.820.570.240.412.760.420.370.460.310.820.620.550.420.380.420.370.440.300.950.970.950.450.390.460.370.410.310.720.820.640.770.453.020.780.480.400.410.320.630.700.540.640.610.660.500.440.320.560.630.440.510.450.644.490.390.320.620.850.340.490.670.890.470.542.310.370.310.340.420.606.190.740.720.350.302.480.582.210.690.820.650.680.370.270.980.570.500.730.820.590.360.280.600.920.490.710.380.662.210.530.360.330.460.710.560.550.350.600.420.360.310.970.390.650.590.680.320.570.930.380.480.280.860.790.490.430.790.42一月二月三月五月六月七月八月九月十月十一月十二月2.552.952.12.16.453.012.958.153.512.152.552.5642.353.835.913.519.312.153.736.7299.83.012.813.855.563.413.0344.32.366.914.613.035.673.355.014.7325.32.033.783.162.535.253.323.588.518.173.222.552.696.963.253.797.459.255.757.562.552.935.063.283.162.158.714.452.352.695.283.233.372.554.956.464.234.232.152.5927.83.283.912.153.974.4443.173.4120.23.284.813.72.793.172.363.164.225.443.732.3235.62.522.032.612.677.425.554.222.792.792.032.393.512.323.737.456.46.222.333.37.672.563.974.672.273.792.3324.53.329.83.033.54.236.783.162.4921.93.748.723.174.912.7525.53.875.232.120.72.363.012.5536.28.463.415.335.72.362.0359.32.357.543.34.883.035.52.3629.92.356.244.156.495.782.563.72.24.620.72.355.567.646.263.972.323.392.735.8321.55.488.594.445.095.166.039.523.3375.225.974.755.54.676.612.847.96.866.884.884.94.443.54.23.785.284.664.84.513.262.562.794.942.3643.794.674.515.332.563.013.163.589.84.095.442.322.942.753.377.244.773.3742.93.542.352.955.914.064.022.073.682.755.193.713.582.553.262.14.593.55一月二月三月五月六月七月八月九月十月十一月十二月0.230.310.360.250.180.250.780.360.190.360.990.420.220.260.310.310.150.480.280.190.460.710.420.210.260.450.810.360.340.470.620.670.410.240.240.375.360.290.840.560.370.690.410.230.610.240.573.060.250.460.380.310.630.400.240.430.210.990.190.390.310.330.840.390.220.460.240.900.700.180.910.310.350.610.400.220.380.260.980.540.190.280.330.640.390.220.410.310.600.780.510.180.510.260.313.360.400.230.470.260.480.540.480.180.380.240.412.440.400.230.580.450.340.380.160.290.240.380.510.220.660.450.284.310.300.190.250.320.320.900.670.210.510.340.340.250.190.230.290.980.420.210.620.280.450.900.770.180.210.750.280.400.210.930.310.480.560.270.230.460.282.960.400.210.370.420.510.820.210.380.302.650.450.210.860.200.380.590.210.333.080.470.200.620.630.252.500.290.362.270.314.380.410.210.640.690.230.290.257.170.280.910.400.210.590.370.670.290.233.620.280.750.500.200.780.700.310.450.270.562.500.280.670.920.200.760.480.280.410.330.712.600.660.210.540.620.620.730.400.850.630.720.200.570.670.560.800.340.960.830.830.590.590.210.540.420.510.460.640.560.580.550.210.390.310.340.600.290.480.460.560.550.210.640.310.230.230.360.230.380.430.490.650.220.480.280.200.180.360.210.330.410.880.500.580.230.410.230.230.185.190.430.280.360.710.490.490.250.450.230.232.090.240.330.630.450.430.310.390.250.620.210.560.43(F设)Q设m＝nQ参(F设)n—面积关系指数，结合我省以往实际资料分析的经验采 CS=3.5CV设计标准频率（%）洪峰流量二年一遇60.88二十年一遇5246.40三十年一遇3.33292.78五十年一遇2.0330.46百年一遇400.04二百年一遇设计标准频率（%）洪峰流量二年一遇69.09二十年一遇5279.66三十年一遇3.33332.30五十年一遇2.0375.07百年一遇454.033工程地质流属XX省XX河上游的XX省XX县辖区的XX支流，坝址控制集雨面上更新统残坡积物（Q3分布于主河及支流河谷两侧，具二元破碎的砂岩、板岩组成，厚度约2～3m，下部为碎石土，碎石无分选性，磨圆度差呈棱角状，大小10～20cm，胶结性较差，疏松状，厚般在30°~60°左右。局部土质岸坡较陡，但采取有效措施稍作处XX水电站位于XX省XX河上游的XX支流，该支流发源于XX两XX水电站坝址位于XX水电站下游约500m处河谷，河谷较宽，为纵向河谷，两岸不对称。左岸坡为一小山包，山顶高程在360床宽约45m，河床中分布有1～2m厚的漂石及砾（卵）石层。2、第四系全新统冲积层（Q4主要分布于坝址河床中，岩性100cm，大的可达1.5～3.0m，卵砾石一般2～10cm，该层厚度0.5~坝址区地质构造较为简单，坝址位于XX山背HCO3-为1.80-2.00mmol/L，侵蚀性CO2为3.80-4.50mg/L，PH值为7.4-7.6，故河水对混凝土结构无腐蚀性，对钢结构具弱腐蚀；坝址综合评价其地下水及河水对混凝土无碳酸型腐蚀，对钢结构具弱腐岩体，一般不易风化，强风化带厚度一般0～1.0m；弱风化带厚度一般为4.0～6.0m。坝址右岸为岩质坡，基岩主要为弱～微风化岩体。强～弱～微各风化均有分布，在河床中受河水的冲刷，覆盖层下为河床左右两侧及两岸分布，厚度较薄，一般为0～1.0m；弱风化层在本工程挡水坝为低坝，最大坝高为17.00m。结合各风化岩体的将坝轴线各部位的建议开挖深度(含覆盖层)分述如下：左岸2.0~应不小于4m。化岩体）属Ⅱ~Ⅲ类岩体中的AⅡ~AⅢ类岩体,坝基岩体的物理力学主要岩性风化程度饱和抗压强度岩体抗剪断强度砼/岩抗剪断强度变形模量泊松比允许承载力g/cm³%MPafCf’c’EF细砂岩弱风化2.732.7265.00.800.600.900.600.202.0岩土名称水流平均水深（m）0.42.03.0平均流速（m/s）细砂岩3.03.54.03.5在大坝右侧山体开凿引水隧洞至本支流XX阁夹粉砂质板岩上，进、出口30米为属Ⅲ~Ⅳ围岩，隧洞其它段围岩稳定，属Ⅱ~Ⅲ。洞室地下水位较浅，围岩呈陡倾角状，局部发育裂围岩类别密度γ内摩擦角φ凝聚力c变形模量E泊松比μ单位弹性抗力系数K0Ⅱ2.70422.5015.000.2017.00Ⅲ2.457.000.258.00Ⅳ2.250.252.5010.002.50层厚1～3m。下伏强风化砂岩或板岩，其承载力可达0.5Mpa，弱风化层厚2～3m，地基承载力可达2.0Mpa。近出露地层为前震旦系XX山群砂岩及砂质板岩2、砼粗骨料：粗骨料可从坝址附近河床采取，质量及储量均满4、土料：土料采场位于左岸附近山坡，质量可达工程要求，方XX山复背斜近核部地带，地形地貌上属构造剥蚀中山区，本工程区2、本水库由低坝挡水形成，岩层坚硬，完整性好，透水性弱，3、坝址地层岩性为细砂岩、砂质板岩，地质构造较简单，岩性4、区内块石料、砼粗骨料、围堰土料均较丰富，质量及储量符距较远，交通不便，对本工程建设不利，须5、鉴于本工程地质工作相对薄弱，资料来源较少，建议加强施4工程任务与规模浩瀚百里，绿岛如莲，被誉为XX的万岛湖；矗立于县南的武陵岩，弥陀寺和太平山道场佑圣宫等。XX矿产资源十分丰富，目前已发现建国以来，特别是改革开放以来，XX县社会经济得到了长足的发展，良好的区位优势，丰富的自然资源，优惠的政策环境，使XX的经济建设和社会发展迅速崛起。据统计资料，2004年，全县完XX支流位于XX省XX县西北部，属XX省XX河上游水系，发源支流从XX山流经XX进入本工程坝址，至XX村接纳XX支流后进入XX水电站：该电站正常高水位为582.30m，发电尾水位为XX水电站：XX水电站正常高水位为336.50m，发电尾水位为XX支流末进行规划。本流域水能资源较丰富，开发条件较好，等综合效益。XX水电站就是利用XX水电站与XX阁水电站间尚有的XX水电站是一座以发电为主的小型水利枢纽工程，水库总库容12×104m3，装机容量2×500kw，依据《水利水电工程等级划分及洪一、拦河坝：设计洪水为二十年一遇（p=5%相应流量二、发电厂房：设计洪水为二十年一遇（p=5%相应流量本工程采用溢流坝自动泄流，溢流坝顶高程307.00m，溢流长XX水电站库容小，计算时不考虑其调洪之用，按入库流量等于单位洪水频率（P）53.331下泄流量M3/S60.88246.40292.78400.00坝前水位M307.67308.40308.91309.35坝后水位M本工程无实测水文资料，利用参证站（XX站）的径流资料通过根据水轮发电机组生产厂家资料，查得水轮机额定效率为88%，日平均流量小于机组额定引用流量即该日发电流量为代表年实际日经计算多年平均年发电量为E多=(384+一月二月三月五月六月七月八月九月十月十一月十二月1234567892021222324252627282930310000合计月日一月二月三月五月六月七月八月九月十月十一月十二月1234567892021222324252627282930310000合计月日一月二月三月五月六月七月八月九月十月十一月十二月1234567892021222324252627282930310000合计的选择只受电站梯级衔接的影响，XX电站坝址至上游梯级水电站的根据年利用小时数控制在3500小时左右时投资较为经济的经单位装机容量（KW）800保证出力KW多年平均年发电量万KW.H309330340设计水头M最大水头M最小水头M水量利用率%636769年利用小时数H386333002698注:表中数据为装机容量选择阶段成果,各方案比较基础一致，水头损失为5.0m。加2％。单位装机容量（KW）800保证出力KW多年平均年发电量万KW.H309330340水量利用率%636769年利用小时数H386333002698工程静态投资万元410419437单位千瓦投资元/KW512541903468单位电能投资元/KW.H注:表中数据为装机容选取择阶段成果,各方案比较基础一致，水头损失为5.00m。组为二台，根据选定装机容量，求得水机单机引用流量为0.88m3/s,流坝顶时则自动泄流。水库淤积量较大后,可在丰水期全开冲砂闸放5工程布置及建筑物XX水电站是一座以发电为主的小型水利枢纽工程，水库总库容12×104m3，装机容量2×500kw，依据《水利水电工程等级划分及洪XX水电站是一座以发电为主的小型水利枢纽工程，开发的主要多年平均相对湿度79%水库特征水位与对应流量:主要岩性风化程度饱和抗压强度岩体抗剪断强度砼/岩抗剪断强度变形模量泊松比允许承载力g/cm³%MPafCf’c’EωF细砂岩弱风化2.732.7265.00.800.600.900.600.202.0XX省通山县XX上游的支流XX河水利资源丰富，该支流已建的XX水电站与XX阁水电站间有81.80m的自然项目单位左方案右方案隧洞全长M31002470压力管长M设计水头M装机容量KW多年平均年发电量KW.H330330工程总投资万元462419单位电能造价元/KW.H洞址为XX省地界洞址为XX省地界工程维护条件有跨河压力钢管无跨河压力钢管通过上述比较,右方案比左方案具有明显优势,本可研推荐右岸阁水电站库尾发电。洞首位于拦水坝前右侧山坡坡脚，隧洞全长厂房，压力管全长170m。村级公路已通至坝址及发电厂房近旁（相距约200m整个枢纽区域交通较为方便。架设10kv输电线路1km拦河坝为浆砌块石重坝，溢流坝段长50m，WES溢流坝顶，上游公式：Q=mB式中：Q——下泄流量(m3/s);B----溢流宽度为50m;H----溢流坝顶水深m;求得设计和校核洪水情况下溢流坝顶过水深分别为1.40m和公式：2hl=0.0166Wh0----波浪中心线超高（m设计工况2h1h0hc△h库水位坝顶高程设计洪水0.660.300.3308.40309.66校核洪水0.400.110.20.71309.35310.06水库正常高水位为307.00m,求得设计与校核洪水工况下所需坝拦水坝为浆砌块石重力坝,底宽9m,上游面铅垂,下游面约为1:0.7。溢流段长50m，WES型横剖面。非溢流坝顶宽2m，最大坝长防浪墙顶高程310.10m,挑流鼻坎高程296.00m。正常高水位以下上砼内均设间距为20cm的φ10双向钢筋网。在溢流段中在右侧非溢流坝底设冲砂闸一孔，孔口尺寸为2×2m，孔底标高采用挑流消能，溢流段长50m，溢流堰顶高程307.00m,挑流鼻在大坝右侧山体开凿引水隧洞至本支流XX阁单层。安装间与主机间布置成不等高，长分别为5m和18m，高分别为7m和10m，外围平面尺寸为23×9m。安装地面以下围护墙为砼水6水力机械、电工及金属结构电机额定效率91％。根据以上参数可求得转轮直径为52cm，为了与电η电—电机额定效率(％)n110—水机最优单位转速65.3(r/m将以上参数代入公式,求得水机转速为1014r/min,为了与电机头76m，求得单位转速为63r/min，从综合运行特性曲线上查得水轮机在最高效率点略偏下方运行。将水轮机控制在模型转轮效率为92%高效区运行时，对应的单位流量最大与最小值分别为0.40m3/s和头70m，求得单位转速为66r/min，从综合运行特性曲线上查得水轮机在最高效率点略偏上方运行。将水轮机控制在模型转轮效率为92%高效区运行，对应的单位流量最大与最小值分别为0.41m3/s和头73m，求得单位转速为64r/min，从综合运行特性曲线上查得水轮机在最高效率点略偏下方运行。将水轮机控制在模型轮效率为92%高效区运行，对应的单位流量最大与最小值分别为0.40m3/s和0.34m3/s,取水轮机效率修正值为-4％、发电机较率为92％,可求得发电由水轮机综合运行特性曲线查得限制工况时汽蚀系数为0.07,汽蚀修正系数取0.015,求得吸出高度:机组安装高程（既主轴中心高程）=正常高尾水的带旁通阀的闸阀，型号为D941X-10-DG600；YT-300调速器，手动为6.1T，故选择10T的起重机。在屋面梁底的机组轴线位置安装一电站最小水头70m，从埚壳取水经压过滤后作为厂房的技术供厂房校核洪水位高出发电机层地面1.1m，洪水时有一定水流渗入厂房，加上机组冷却后的废水，初步估算每小时最大渗水量约为切割机、砂轮机、扳手等。在宿舍楼内设工发电机选型为SFW500—6/850，最大送网功率为发电机额定功率2×500KW，机端出线电压在综合考虑发电成本及供电可靠性等因素为1000kw，由于电站以输送电能为运作方式，主变应考虑能满足最大送网功率要求，无需考虑大网倒送负荷需要，故主变采用S9—1250KVA(10.5/0.4)双绕组变压器。综合考虑继电保护，通讯干扰等因素，进行分析比较，采用常规Y/△—11接线。避雷针避雷，接地体采用预埋钢构的方法，使接地电阻小于10Ω。夜晚人工照明。本地区多年平均气温16.5度,最低气温-13.5度,气在引水隧洞洞首设潜孔式平面斜拉钢闸门一道，用于引水建筑在施工支洞口及压力钢管首分别设置φ800和φ600毫米内径的在厂房后山陡坡段设内径1.0m的压力钢管,长170m，在置的两台机组压力钢支管，支管直径0.7m，叉管处设钢筋混凝土镇墩，压力钢管最大埋深为3m，埋入部分外包砼，明敷部分作三油二外加2mm的锈蚀,最后确定钢管壁厚为6mm。7施工组织设计集雨面积30.6km2，调节库容为8×104m3，是一座以发电为主要效益XX水电站位于XX省XX河上游的XX支流，该支流发源于XX两整个流域范围内山青水秀，树木茂密，植被状况良好，XX水电站以日照充足，无霜期长，四季分明。多年平均年降水量1489mm，多年受季风影响，有春夏多雨水的规律，全年雨量多集中中4—8月，约平均流量0.292m3/s，坝址设计洪水成果：设计洪水标准(p=5%)时洪400.00m3/s。枯水期五年一遇的堰亦采用粘土斜墙编织袋过水围堰，堰顶宽采用2m，迎水坡及背水经常性排水采用明式排式，围坝的渗透流量按下式计H2-h2算:q=k2L统计算经常性排水流量为50m3/h，排水设备选用潜水电泵，功至XX乡的村级公路已至发电厂房和拦水坝近旁,将村级公路接附近各建一仓库堆放，施工队伍借用附近民房或搭临时工棚作生活的混流式卧轴发电机组，总装机容量1000kw，设备用农用车运至厂8工程管理、环境保护与水土保持设计设置管理机构，新建一综合办公楼，建筑面积为200m2，兼有仓施工噪声主要为各种施工机械运行产生的噪声和汽车运输产生的交通噪声。由于其分布较为分散，噪声防护没有经流失。因此，本方案重点对工程项目建设期（1）原地貌、土地及植被等水保设施损坏的预测2）工程建设弃的水土流失治理达到95%以上；目建设区和直接影响区两个区域，总面积80hm2。项目建设区面积为出口设计一个弃土（石）场，计划弃石（砂）量0.4万多m3,占地面施工场地的清理和平整，结合工程管理和生产生活区做好硬化和绿公路修建水土流失防治区：全长400m，重点是做好路内的排水在隧洞出口及施工支洞口弃碴场设浆砌毛石挡墙护脚,上坝公路水库保护范围内现有林草植被条件好,为保护工程安全运行,防止库区水土流失,维护和改善库区生态环境,对水库保护范围现有林9水库淹没处理及工程永久占地别为307.67m和308.40m，参照有关库区淹没界线划分原则,确定本工程林地、耕地与房屋的淹没界线分别为307.00m、308.17m和根据XX县现行的库区移民征用标准及该电站业主与当地政府签10工程估算5、其他临时工程按建筑工程合计的2%计取6、基本预备费按10%计取、价差预备费根据国家计委《国家计编号工程或费用名称建安工作费设备购置及安装费其它费用合计Ⅰ建筑工程211.60211.601拦河坝56.7656.762引水隧道127.19127.193压力管5.525.524厂房21.1521.155升压站0.980.98Ⅱ机电设备及安装工程77.0077.00Ⅲ金属结构及安装工程26.4026.40Ⅳ临时工程13.4913.49Ⅴ其它费用37.8137.81Ⅵ库区淹没与占用补偿15.0015.00225.09103.4052.81381.30Ⅶ预备费38.13Ⅷ静态总投资419.43序号项目单位数量单价合价备注建筑工程2116000.00一拦河坝567600.001人工挖运土m310．001000.002挖掘机配汽车运土m38008．506800.003一般石方开挖m324.002400.004沟槽石方开挖m38070.005600.005坝体砌筑m32700120.00324000.006坝体砼m3500280.00140000.007钢筋制安T4500.0045000.008铜片止水m40220.008800.009帷幕灌浆m200.0026400.00另星项目元10000.00二引水隧洞1271900.001人工挖装运土m310.001000.002沟槽石方开挖m38070.005600.003平洞石方开挖m2470500.001235000.004洞内浆砌块石m3100.005000.005砼m3300.009000.006钢筋制安t14500.004500.007洞内岩石水泥砂浆抹面m22009.001800.008零星项目与引水元10000.00序号项目单位数量单价合价备注三压力输水管55200.001机械土方m38.508500.002沟槽石方m370.007000.003浆砌毛石墙m390.002700.004支墩砼m3300.007500.005镇墩砼m3300.0015000.006钢筋制安T14500.004500.007零星项目项110000.0010000.00四厂房211450.001机械土方m35008.504250.002沟槽石方开挖m370.0010500.003厂房下部砼m3280200.0056000.004厂房上部砼m3400.0030000.005钢筋制安m34500.0054000.006砖砌体m3170.0020400.007抹灰m39.0013500.008m365120.007800.009照明元5000.00零星项目元10000.00五升压站m39850.001人工挖装运土m320010.002000.002浆砌块石m3120.001800.003管沟砖砌体m35170.00850.004砼预制板m4300