重力坝毕业设计计算书

《重力坝毕业设计计算书》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、第二部分设计计算书1调洪演算1.1洪水调节方案的拟定综合考虑该库调洪要求，用半图解法进行调洪。洪演算方案拟定如下，共有三个方案，详细情况列于表1.1-1。表1.1-1洪水调节方案堰顶高程(m)孔口尺寸(m)孔数方案一146114×165方案二146212×157方案三146216×155注：表示孔口尺寸(m)(宽´高)，即宽m，高m1.2表孔泄流能力计算根据库容曲线Z-V，以及用水力学公式计算Q-Z关系采用开敞式溢流时，利用下式计算式中：——溢流流量，单位为；——为闸孔数；——过水断面宽度，单位为m；m——堰的流量系数，本设计中

2、取0.5；——侧收缩系数，根据闸墩厚度及墩头形状而定，在（0.9~0.95）中取值，本设计中取0.92；——堰顶全水头，单位为m。第66页共66页方案一：堰顶高程1461m,堰宽为70m，孔口尺寸14×16，5孔；表孔泄流能力计算见下表1.2-1：表1.2-1q=f(V)关系曲线计算表库水位堰顶水头H（m）下泄流量q总泄流量Q库容V146100014098.6714621142.63142.6314778.5114632403.41403.4115458.3614643741.12741.1216138.20146541141.

3、031141.0316818.04146651594.631594.6317516.07146762096.202096.2018218.10146872641.512641.5118920.12146983227.313227.3119622.15147093850.963850.9620324.181471104510.304510.3021079.431472115203.495203.4921847.161473125928.945928.9422584.581474136685.296685.2923430.24147

4、5147471.327471.3224353.431476158285.958285.9525094.621477169128.209128.2025920.361478179997.219997.2126803.8014791810892.1610892.1627687.2414801911812.3411812.3428617.2014812012757.0512757.0514822113725.6913725.69第66页共66页方案二：堰顶高程1462m,堰宽为84m，孔口尺寸12×15，7孔；表孔泄流能力计算见下表1

5、.2-2：表1.2-2q=f(V)关系曲线计算表库水位堰顶水头H（m）下泄流量q总泄流量Q库容V146200014778.5114631171.15199.6815458.3614642484.10564.7816138.2014653889.341037.5616818.04146641369.231597.4417516.07146751913.562232.4818218.10146862515.442934.6818920.12146973169.813698.1219622.15147083872.774518.232

6、0324.18147194621.155391.3521079.431472105412.366314.4221847.161473116244.187284.8822584.581474127114.738300.5223430.241475138022.359359.4124353.431476148965.5910459.8525094.621477159943.1411600.3325920.3614781610953.8512779.4926803.8014791711996.6513996.0927687.24148

7、01813070.6013996.0928617.20第66页共66页方案三：堰顶高程1462m,堰宽为80m，孔口尺寸16×15，5孔；表孔泄流能力计算见下表1.2-3：表1.2-3q=f(V)关系曲线计算表库水位堰顶水头H（m）下泄流量q总泄流量Q库容V146200014778.5114631163.00163.0015458.3614642461.04461.0416138.2014653846.99846.9916818.04146641304.031304.0317516.07146751822.441822.4418

8、218.10146862395.652395.6518920.12146973018.873018.8719622.15147083688.353688.3520324.18147194401.104401.1021079.431472105154.635154