混凝土重力壩綜合施工導(dǎo)流設(shè)計(jì)

某混凝土重力壩施工導(dǎo)流設(shè)計(jì)一、 工程概況本水庫是該流域水利水電建設(shè)規(guī)劃中日勺主體工程之一。壩址位于某鄉(xiāng)上游3km處，控制流域面積317km2,壩址處近年平均流量11.1m3/s,年徑流總量3.5X108m3o本工程是一座兼有防洪、灌溉、發(fā)電、水產(chǎn)養(yǎng)殖效益勺綜合開發(fā)勺水利樞紐工程。工程總庫容為1.6X108m3，正常高水位130.0m，死水位112.0m，設(shè)計(jì)洪水位130.74m,校核洪水位132.4m，水庫有效庫容達(dá)1.0X108m3,為年調(diào)節(jié)性水庫。該工程攔河壩勺壩型為砼重力壩，電站布置在河床右側(cè)勺非溢流壩段勺背面，為壩后式布置，壩頂全長315m，壩頂高程135m，其中左非溢流壩壩段長度為100m，溢流壩段長度為48m，右非溢流壩段長度167m，溢流壩段布置在河床中部偏左岸，設(shè)有3孔6mX12m勺弧形工作閘門，堰頂高程124m，壩底最大寬度為54m，消能方式為挑流消能，在壩后式廠房處，非溢流壩段勺最大底度為46.6m，廠房最大寬度為13.7m，廠壩聯(lián)結(jié)段為4m。電站裝機(jī)容量為2X3200KW。引水壓力鋼管設(shè)在非溢流壩段內(nèi)，進(jìn)水口底板高程為95.0m，管徑1.75m，采用單機(jī)供水勺布置方式。水輪機(jī)安裝高程85.0m，設(shè)計(jì)工作水頭36.0m，最大工作水頭45.0m，最小工作水頭27.0m。工程樞紐處地形及工程布置見圖1。二、 基本資料工程水文資料該水庫庫容在1X108m3以上，主壩工程為二級建筑物，壩址設(shè)計(jì)洪水過程線，是根據(jù)上游3km處水文觀測站實(shí)測某年最大一次洪水典型加以修正，以洪峰、洪量控制進(jìn)行放大而得?，F(xiàn)將各設(shè)計(jì)頻率洪水過程線、施工設(shè)計(jì)洪水等水文資料列于表1?表5。表1壩址設(shè)計(jì)洪水過程線 單位：m3/s頻率時(shí)間1%2%5%10%20%頻率時(shí)間、\1%2%5%10%20%010101055601381071068159617815218414611266877261574112660600438368276725044423028181160134099672350478352726181724923780634474366842519151211304824153403092409020141055

3667558852942334396101042342406308253208102748209276218175133洪量(億m3)1.261.090.870.690.535421118016311888表2 施工設(shè)計(jì)洪水成果 單位：m3/s'』一一_頻率(％)分期251020全年施工13409967325047月?次年4月11508606004009月?次年3月31623517511910月?次年3月2631861338610月?次年4月319252206157表3 水文站實(shí)測歷年月平均流量 單位：m3/s圣123456789101112合計(jì)年平均19625.788.4220.211.43.3815.18.818.5716.47.513.092.97142.2511.819634.735.8718.811.61.8724.611.26.7612.312.519.48.02154.4812.9196417.512.210.815.945.874.251.320.96.134.153.203.97266.0522.219653.054.198.4016.821.659.311.111.25.793.303.072.72150.4912.519662.923.7610.513.635.517.58.425.993.353.052.522.30107.418.9519674.305.627.2819.230.810.38.1214.83.925.153.713.46114.669.5519683.124.208.6823.347.921.411.55.054.274.773.152.71140.0511.719693.0716.36.917.5512.027.78.425.212.582.304.683.40100.28.3419705.053.118.4012.122.028.07.226.805.643.554.163.38109.389.1119713.369.0515.915.212.827.08.3210.816.04.986.264.30131.9711.019723.852.955.2514.630.444.815.95.204.526.695.903.58143.3712.019732.752.622.684.2121.312.811.07.083.623.275.363.3380.026.6719746.396.777.6114.210.922.88.609.273.013.822.892.6296.888.071972.23.264.3515.68.7913.38.116.916.425.785.846.3986.897.24

5419765.137.948.0526.613.525.132.77.453.134.363.453.07140.4811.719772.524.7510.313.850.036.216.813.05.104.065.193.37165.0913.819782.813.029.0612.314.87.887.445.354.043.972.984.5078.156.5119796.906.7010.817.826.529.631.922.19.257.635.593.86178.6314.919803.244.2013.518.529.726.436.611.119.68.857.717.99187.3915.719814.616.567.509.7121.938.28.597.624.603.342.352.33115.799.6519821.988.624.645.5615.217.77.5918.110.97.0613.66.98117.939.83合計(jì)95.0130.11200.06299.53523.89579.88309.54209.29150.57110.09114.0785.252807.28234.12平均4.526.209.5214.324.9427.6114.749.597.175.245.444.06133.6811.14表4 壩址水位一流量關(guān)系曲線水位（m）84.384.685.086.087.088.089.090.091.092.093.0流量(m3/s)055022050085512801730237029903630表5 水庫容積曲線高程（m）9095100105110115120125130135面積（km2）0.1460.9551.7682.6323.4404.3505.2816.2877.2068.088容積（萬m3）02759562060357455227935108301420018020壩址地形地質(zhì)條件（1） 左岸：地形自然坡度為1：1.5?2.0,覆蓋層2?3m，全風(fēng)化帶厚3?5m，強(qiáng)風(fēng)化加弱風(fēng)化帶厚5m,微風(fēng)化厚4m。（2） 河床：巖面較平整。沖積沙礫層厚約0?1.5m，弱風(fēng)化層厚1m左右，微風(fēng)化層厚3?6m。河床縱剖面地形中，迎水面壩踵