七里水电站更新改造项目初步设计报告

1.5水利机械、电气工程和金属结构 2.4.2月、年径流计算 3.2厂址及压力管线地质 4、工程任务和规模 4.1工程建设的必要性 5、工程布置及建筑物 5.1工程等级及洪水设计标准 6、水电机械、电气工程及金属结构 6.3其他金属结构 7、消防设计 8、施工组织设计 9、土地处理和工程永久占地 9.1土地处理范围和实物指标 9.2土地处理和征用、补偿投资费用 10．2环境措施设计 低气压及锋面活动频繁，天气阴晴不定，常有沥涟春盛夏时，在副热带高压控制下，天气晴热少雨，降水流域内其多年平均气温为14℃,极端最高气温36.1℃,极端最低气温-15℃；多根据《水利水电工程等级划分及洪水标准》SL252-2000规定，本工程确定为五等水电枢纽工程，建筑物拦河堰坝、引水明七里水电站原来主要由拦河坝、引水明渠、前池³13.74m，主厂房净高4.5m，地面高程228.00m。主厂房内设二台发电机组，机组安升压站设在主厂房上游侧，平面尺寸7.74³9.00m，地面高程228.00m。本电站装机容量2³320KW，设计水头107.00m。水轮机选用XJA-W-42/1³11配本电站推荐装机2³320KW，机组为低压出线，经主变升压后与10KV系统连接。明渠渠首进口设事故闸门1.2³1.2m一扇，喇叭口前设固定式拦污栅一扇。进的防火技术，确保做到安全、方便、经济、合理。消本工程厂址位于七里水电站所在河流七里坑出口,离**县40KM,由省道通往厂址，交通条件比较便利。厂址至坝址有简易道工程所需砂石料可在下游河道内开采,所需块石可就地开采。水泥、钢材由市场根据本工程的性质及规模，按照《水利工程管理单位编制员试行标准》对防火、防爆，防电气伤害，防机械伤害、防对防噪声及防振动，温度和湿度的控制，采光和一、库mmmmm%h 主厂房尺寸：长³宽1、水轮机XJA-W-42/1³11台数mmmmmmm³mm³mm台m台KVA年 0.5³1.213.74³7.749.00³7.522经济指经济指标元/KW%高程相差较大，根据《**省**畲族自治县水资源调查与水利区划》用回归计算结果分设计流域内没有雨量站，流域附近设有大际、**雨量站、横坪雨量站。从年降水量情况来分析，雨量随海拔高程的增年表2-2年表2-3库2表2-5七里水电站设计年径流各月平均流量表年年年年年数10.0330.3970.2220.1780.4730.5500.3930.1090.2440.1060.0250.01520.0470.6990.4110.1350.3500.4840.2180.1060.1670.0870.0250.01130.0440.3240.3020.1200.4011.7990.2220.0870.1380.0840.0250.01140.0510.2110.6340.1060.2800.5530.1820.0800.1090.0690.0220.01150.2150.1420.3530.0950.2660.3680.1600.0730.0910.0580.0220.01160.1860.1310.2480.0870.7970.2150.1600.0690.0800.0510.0220.01170.1710.1020.1710.0910.4510.1710.1460.0690.0730.0470.0220.01180.7650.0840.1380.0910.3130.1460.1420.0620.0690.0440.0220.01190.3750.0690.1270.1490.2440.1750.1380.0620.0620.0400.0220.011100.3750.0660.1381.0010.4011.0160.1310.0580.05110.2840.1060.1425.0503.0263.4260.2180.0580.0580.0360.018120.3640.0910.3681.1940130.2260.0730.2480.6810.5790.5931.3760.0690.59140.1600.0620.1890.4480.3571.5803.4770.062150.1200.0550.2221.0560.2690.9210.8080.0580.2150.0330.0180.011160.0950.0620.2481.3650.3641.6600.5170.0510.18170.0800.1820.1861.1720.2441.5040.2800.0470.13180.0690.1310.1490.8700.1930.6590.2990.0470.1130.0330.0150.015190.0620.1170.1751.0050.1600.5130.3280.0730.0910.0330.0150.015200.0580.3130.3641.3440.1421.5770.2440.0730.0760.0400.0150.022210.0550.2150.2620.6950.1600.7030.1930.2260.0690.1860.0150.171220.0510.2620.2690.8010.1600.4510.1600.4550.0620.0950.0150.025230.0470.3060.2990.4730.1970.4700.1380.1820.0580.0730.0150.022240.0470.5460.2950.3710.1600.3200.1240.1970.0690.0510.0150.018250.0440.5320.4150.2660.1420.2480.1131.2930.2440.0400.0150.015260.0400.3020.2840.2110.1240.2040.1093.6370.1530.0360.0150.015270.0400.2770.2260.1780.1090.1750.1170.7900.1130.0330.0150.011280.0440.2840.4110.1930.1020.2880.1090.4480.0840.0290.0150.025290.0870.0000.3310.6260.1242.1150.0980.1860.0690.0290.0150.200300.0730.0000.3170.6260.3790.5900.0950.1460.0660.0250.0150.273310.0870.0000.2330.0001.7590.0000.0910.1780.0000.0250.0000合计4.4026.1428.38220.67713.54124.2Q月0.1420.2180.2690.6880.4370.8080.3860.2950.1310.0510.0180.03610.0140.0110.0690.3770.1270.1630.6660.1410.0470.0620.0870.36920.0140.0110.0400.4490.1090.2280.5070.1010.0470.0540.1920.19230.0140.0110.0330.9920.1090.1700.2900.0910.0540.0511.7960.15940.0250.0070.0250.4530.1160.1340.2030.0760.0510.0470.5830.12750.0250.0070.0220.9310.2280.1120.1560.0690.0540.0470.3620.11260.0220.0070.0220.9420.6370.0980.1270.0620.1200.0540.4380.09870.0180.0070.0331.4380.5030.1010.1090.0580.0800.1520.2900.09180.0140.0070.0330.6840.3510.2750.0980.0540.0690.3660.2030.08390.0140.0070.0580.5250.3260.2970.0910.0510.1410.3770.1480.076100.0140.0070.1480.3980.2210.1880.0830.0471.6550.4240.1200.120.0180.0110.1201.0970.1410.1090.0940.0472.3720.3950.1050.0130.0180.0330.1160.6230.1630.0910.0910.0431.0570.2570.2640.140.0140.0250.2820.5980.2140.1300.1300.0400.2720.1590.1850.062150.0140.0180.6810.3260.2030.7820.1010.0690.1700.1200.1410.058160.0110.0180.8290.2460.6120.5180.0870.4560.1270.0980.1520.058170.0110.0140.3550.1920.3150.2930.0800.1700.1010.0830.4380.054180.0140.0110.2250.1630.2250.1920.0720.3110.0870.0720.4060.054190.0400.0110.2210.1410.1630.1450.0651.3220200.0330.0180.4160.1300.1340.1810.0620.4240.0690.0870.1920.047210.0250.0360.2390.1740.1380.1700.0580.2720.0650.0720.1560.047220.0220.0510.2140.5580.1700.5290.0540.1590.0800.0690.2640.043230.0220.0470.5580.3040.3260.6770.0540.1850.0720.0800.2680.043240.0290.0830.3040.2210.2030.5790.1200.1270.0650.1090.1920.040250.0250.0470.4130.2030.1560.3150.3080.0980.0830.4600.1450.040260.0220.0470.2500.6450.1270.2140.1480.0800.4091.8430.1160.040270.0140.2320.2030.3480.2750.1590.1960.0690.1740.5250.1520.040280.0140.0980.4420.2501.4880.1300.9380.0620.1270.3260.9380.062290.0140.0000.5210.1810.5360.1410.4640.0580.0870.1741.9450.054300.0110.0000.2900.1450.3330.5320.2750.0540.0690.1300.6340.047310.0110.0000.2280.0000.1990.0000.1700.0510.0000.1050.0000.043合计0.5580.8917.59715.4599.0177.7895.9684.88918.5167.94511.2882.455Q月0.0180.0330.2460.5140.2900.2610.1920.1590.6190.2570.3770.08010.0750.0870.1020.0530.2070.5540.1241.12820.1130.0720.1060.0450.1430.2790.1130.4560.0490.0260.0570.01530.0720.0640.3210.0410.1170.1920.1130.7920.0450.2450.0530.01540.0490.0600.2190.0380.2490.1510.1430.3580.0450.2380.0450.01550.0340.0570.2110.0382.0060.1240.1280.5240.0410.2450.0450.01560.0260.0530.2190.0380.6900.1090.1130.2640.0380.0380.0380.01570.0260.0490.2340.0450.3920.0980.1020.1890.0380.0450.0380.01180.0230.0450.1730.0490.2110.0870.0910.1510.0380.1550.0340.01190.0190.0530.1320.1400.1660.1550.0870.3210.0340.2220.0340.011100.0190.1210.1090.1770.3511.1500.0110.0150.0910.0911.0970.7430.3390.0870.2980120.0490.0720.0790.3510.3540.6490.2300.7990.0720.0600.0300.011130.5920.0600.0830.2900.2451.1310.1141.0940.0490.1890.1620.1700.4490.1150.3880.0450.1320.1170.1360.3920.0910.1700.0380.6830.0260.011160.2450.0450.1060.0870.1130.2300.0790.1320.0450.3170.0260.011170.1400.0640.0870.0720.0980.3320.0720.1090.0410.1960.2450.011180.0980.1810.0720.0600.0981.9500.0190.0750.1700.0640.0530.1772.0740.0600.0910.1170.0870.0230.011200.0600.8070.0680.0490.2983.7670.0640.1280.8450.0720.0230.011210.0680.3320.0640.0450.1774.3220.1210.1020.2000.0570.0230.011220.2900.3580.0570.0450.1363.2170.0910.0870.1320.0530.0230.008230.8940.7810.0600.1020.1060.8820.0750.0790.0640.0980.0190.008240.4711.3950.1240.2560.0910.6150.0640.0750.0530.1770.0190.0250.2720.5920.0940.2110.1090.3050.0570.0680.0450.1320.0190.008260.1920.3580.0750.4750.2980.2340.0530.0640.0380.1730.0190.008270.3130.2110.0600.5690.1960.1850.0570.0600.0340.1730.0190.008280.2870.1550.0570.6830.3620.1620.0530.0680.0300.1320.0190.008290.1920.1210.0720.3963.6050.1550.0680.0600.0300.1550.0190.008300.1400.0000.0720.3323.1110.1400.3320.0600.0300.1130.0190.008310.1060.0000.0600.0001.4900.0000.3090.0570.0000.0870.0000.008合计6.4266.5513.5796.10616.64224.4183.3687.5882.4974.5071.1240.362Q月0.2070.2260.1170.2040.5360.8150.1090.2450.0830.1470.0380.011HpHp(P)Cs/Cv1214.02236.95H42.5 m 式中：Qm——某时段洪峰流量（m3/st——某时段净雨量（mmτ——汇流时间（hF——水库集水面积（km2L——干流长度（km控制断面控制断面坝址25191.6692.16系统、厂房、升压站等均为5级建筑物。本工程ζs——淹没系数1地层组成，岩性以熔结凝灰岩为主，局部夹压力管线长507.12m，沿线山坡于0°~40°之间起伏，覆盖层主要为第四弱风化层：1:0.5～1:0.3流密布，水流湍急，落差大，雨量充沛，水力七里水电站装机容量2³320Kw，多年平均发电量80.91万度，本电站为一座以D为发电洞直径L为发电洞长度ξ为局部水头损失系数2³250W、2³320KW、2³400KW2³4002³3202³250所以本设计推荐2³320千瓦。 %米米米米根据《水利水电工程等级划分及洪水标准》SL252-2000规定，本工程确定为五等水电枢纽工程，建筑物拦河堰坝、引水明坡积层：1:0.75～1:1.0弱风化基岩：1:0.3～1:0.5七里水电站原来主要由拦河堰坝、引水明渠、前vc—设计流量时，引水渠流速m/s；加高修复明渠全长800m，原明渠为矩形断面，其过水宽度0.5m，平均坡降J=CiQ流平顺、水头损失小、施工及运行方便，避增加单位电能及费用比ΔW/ΔE33566666600t=2L/αcp=2³580.11/1000=1.16s相调速器有效关闭时间Ts，据厂家提供最大允许为9s，tr<Ts为间接水锤。T关：H净取107.00米；T开：H净取107.00米；计算水锤，弃荷时全开～全关，T分别采用6、5、4秒进行计算，增荷时全关～全关开TT（秒）关ρm654ζΔHξ开ρζΔHTN-机组额定出力，320Kw；0Ta－机组时间常数T-导水叶不动时间，电调0.1秒，机调0.2秒；AeT-调速系统迟滞时间，T=T+0.5δeT;ccAasT-升速时间，T=（0.9－0.00063n）T；f－水锤影响系数，查fh~ζ图表得出；hTT（秒）s654开fh关开β关[β]=0.5[β]=0.6引水系统末端最大水锤相对升高允许值[ξ]=0.30T=5秒，T=6秒，计算水锤满足要求。校核洪水位：Q（P=2.0%）=134.03m3/s洪水位：226.1设计洪水位：Q（P=3.33%）=120.89m3/s洪水位：2根据地形和洪水位，确定发电厂房地面高程228.00m，主厂房平面尺寸13.74³升压站设在主厂房上游侧，平面尺寸7.74³9.00m，地面高程228.00m。2³320Kw本水电站根据上述参数，选用斜击式水轮机，型号为XJA-W-42/1³11型，配XJA-W-42/1³11本电站装机容量为2³320kv，机组为低压出线（Ue=0.4kv）,经主变升压后与-50钢芯铝铰线与系统连接。结路侧和主变高压侧装设真空开关。发电机控制屏参（a）电压调节范围：75115%;（b）电压调差率：≤±10%;（c）静态电压调整率：≤±2.5%;其他金属主要有进水口拦污栅、1.2³1.2方形铸铁闸门和压力钢管（管长景宁县七里水电站更新改造工程初步设计在消防设计中遵循“预防为主、防消结合”的①、厂区各建筑物设计布置充分考虑防火安全②、厂区各建筑物（包括各建筑物内部结构）根③、本工程为小型发电工程，根据工程的特点，④、鉴于已考虑备用消防水源，不再设置消防备⑤、由于本电站为小型电站，本着经济实用原则景宁县七里水电站更新改造工程初步设计消防给水和技术给水共用高位水池，高位水池到厂房用Ф100水厂址，交通条件比较便利。厂址至坝址有简易道坝址隧洞进口、厂址、隧洞出口等施工点附近均有10千伏高压线通过。施工用七里水电站更新改造土建工程项目包括：拦河拦河堰坝和引水渠进口施工导流采用分期围堰，φ300导流底孔导流。围堰采项目名称施工准备1场内交通1压力管道开挖镇支墩砼浇筑厂房工程升压站工程机电设备及安装金属结构制作及安装1212345三序号数量景宁县七里水电站更新改造工程初步设计七里水电站所在地山高坡陡，旱地零星分散，123护同步协调发展。同时应加强附近居民的环保知识宣多施有机肥，可减少化肥的气氮、磷流失，鼓励使用裸露于荒野，势必引起水土流失，河道貌岸然淤施工结束后，对区域内所有的临时设施进行清被压实的土壤，弃碴场地覆盖耕填土30～50cm，撒播草籽或种填草皮施工噪声主要是自卸汽车、挖掘机、装载机、现状情况较好，工程建成后，不存在污染水源根据本工程的性质及规模，按照《水利工程管理单位编制员试行标准》本工程规划、设计、施工、运行管理的有关资料和文期进行观测、检查、养护维修，随时掌握工程建筑物水文测报工作，配合主管部门做好汛期防汛工作，同展多种经营，做好水质监测及环境保护工作。管理人在施工期和运行期应做好工程监测工作，通过爆破、打井、采石、取土等危害工程安全的活动。个别确需要（5）、水力发电厂机电设计技术规范（试行SDJ173-85）（19）、劳动部劳字[1988]48号文《关于生产性建在编制可行性研究报告时增加《劳动安全与工业卫生》篇的通知”设计采用的标准、规范将不限于上列内容并按最新版本执行