某桥水库灌区渠系建筑物统计表渠系渡槽倒虹管总计83.97 2596844048125930干渠27.772596844048125930支渠56.2表4-1 渠线长度 (km)建 筑 物 分 类跌水(座)暗涵(座)泄洪闸 （座）节制闸 （座）分水闸 （座）测流设施(座)公路桥(座)生产桥（座）(座)长度(m)(座)长度(m)某桥水库灌区历年实灌面积年实灌面积年实灌面积年实灌面积年实灌面积196419755.819865.519975.219657.2919765.619874.819985.819666.9519776.519884.519995.119676.3719786.219895200021968619795.41990620016.319695.31980619914.22002319706.819816.519924.71971719824.319934.319725.619833.519944.819736.119844.31995519746.319855.719965.3平均6.4 单位：万亩 表4-2 单位：万亩大观桥水库灌区土地利用现状表灌区耕地林地水面荒地京山灌区5.82.8949.80.6511.21.4124.30.712.1天门灌区10.14.8347.80.76.541.8918.71.4514.37合计15.97.7297.61.3517.743.3432.1526.47表4-3土地总 面积 (万亩）面 积 (万亩）占土地面积 (%)面积 (万亩）占土地面积 (%)面积 (万亩)占土地面积 (%)面积 （万亩）占土地面积(%)灌区范围其中水田旱田水稻棉花 花生玉米豆类蔬菜 沙梨 油菜 小麦 绿肥 其它2.892.380.512.380.180.030.050.050.22.895.1282.317.782.36.241.041.741.746.93100177.24.834.030.84.030.080.080.10.120.320.14.838.6983.416.683.41.661.662.082.496.63 2.08100179.97.726.411.316.410.260.110.150.170.520.17.7213.818317833.381.431.942.26.74 1.31100178.89 大观桥水库灌区2000年农作物种植结构表4-4有效灌溉面积 (万亩)农作物种植种类面积(万亩)小计 (万亩)播种面积(万亩)京山县+A15(万亩)占耕地面积%天门市(万亩)占耕地面积%灌区合计(万亩)占耕地面积%灌区范围其中水田旱田水稻棉花 花生玉米豆类蔬菜 沙梨 油菜 小麦 绿肥 其它2.8920.8920.20.030.080.08 0.25 0.252.895.369.230.869.26.921.042.772.77 8.65 8.65100183.44.833.81.033.80.10.080.120.12 0.27 0.344.838.7278.721.378.72.071.652.482.48 6.58 7.04100180.57.725.81.925.80.30.110.20.20.52 0.597.7214.0275.124.975.13.91.422.592.59 6.75 7.65100181.6 大观桥水库灌区2010年农作物种植结构表4-5有效灌溉面积 (万亩)农作物种植种类面积(万亩)小计(万亩)播种面积(万亩)京山县+A30(万亩)占耕地面积%天门市(万亩)占耕地面积%灌区合计(万亩)占耕地面积%灌区范围其中水田旱田水稻棉花 花生玉米豆类蔬菜 沙梨 油菜 小麦 绿肥 其它2.891.71.191.70.20.030.10.10.30.30.162.895.0158.841.258.86.921.043.473.47 10.4 10.45.54100173.44.833.51.333.50.150.080.150.16 0.35 0.350.094.838.7772.527.572.53.111.653.13.37.25 7.251.85100181.67.725.22.525.20.350.110.250.26 0.65 0.650.257.7213.7867.3632.6467.364.531.423.243.37 8.42 8.423.24100178.5大观桥水库灌区2020年农作物种植结构表4-6有效灌溉面积 (万亩)农作物种植种类面积(万亩)小计(万亩)播种面积(万亩)京山县(万亩)占耕地面积%天门市(万亩)占耕地面积%灌区合计(万亩)占耕地面积%不同水平年渠系状况条件下的毛灌溉用水量年19683582763.763532725.163332570.7619693872987.643742887.283352586.219703572756.043562748.323142424.0819713742887.2837528953552740.619724103165.24113172.923913018.5219732692076.682612014.922261744.7219743762902.723832956.763592771.4819753052354.62872215.642381837.3619763322563.043262516.722882223.3619773312555.323162439.522531953.1619784293311.884263288.723963057.1219793913018.523872987.643462671.1219803022331.442842192.482401852.819814653589.84693620.683923026.2419822882223.3627521232021559.4419833292539.8832525092682068.9619844413404.524323335.043742887.2819853542732.883402624.82672061.2419864113172.923983072.563472678.8419872782146.162642038.082271752.4419883622794.643692848.683232493.5619892411860.522331798.762021559.4419903722871.843552740.63242501.2819913522717.443452663.42882223.3619922932261.962852200.2250193019932161667.521951505.41391073.0819943452663.43272524.442702084.419953392617.083302547.6300231619962531953.162351814.21821405.0419973893003.083742887.283062362.3219982531953.1622517371731335.5619992481914.562101621.21701312.420002451891.42051582.61671289.24表4-7 现状年20002010年2020年综合定额（m3/亩）毛用水量(万m3)综合定额(m3/亩)毛用水量(万m3)综合定额(m3/亩)毛用水量(万m3)平均336.2121 2595.558 325.15152510.17280.15152162.77大观桥水库历年来水量水面蒸发量及渗漏损失量年年年19671762548198224348801997295016301968184779719834270954199828431443196929607681984142396619991861110419703301729198521589482000164231019713421128319862094994197221911326198725971024197339501226198824357331974224015381989368864619752018997199032787291976236983619913760133519772643904199221301197197816917811993203284019792550101919941854953198049679061995258447419811666961199629431051 表4-8 单位：万m3水库来 水量水面蒸发及渗漏损失量水库来 水量水面蒸发及渗漏损失量水库来 水量水面蒸发及渗漏损失量小型水库和塘堰供水量50758090176950小计1176表4-9 降雨频率%小型水库(104m3)塘堰(104m3) 某桥水库灌区内塘堰供水量统计表所在县市50%75%80%90%京山县497.326502.2天门市215.423001.5合计712.79503.7表4-10 容积（104m3）复蓄次数 (一般年份)不同频率年可利用（104m3）机灌溉面积 (万亩)某桥水库灌区小型水库供水量统计表所在县镇名称类型50%75%80%90%京山县铁豆土堰2108杨大堰21210永红坝6.8804540雁门口水库4.273.1269.4260罗家港31226天门市方家大堰0.5503530新建坝0.518.411.710双堰水库2262412合计21281.52187.12176表4-11承雨面积(km2)总库容(104m3)有效库容(104m3)不同频率年供水量(104m3)小(二)小(二)小(二)小(二)小(二)小(二)小(二)小(二)8个年份196822262763.7√2725.1√2570.7√196913682987.6√2887.2√2586.2√1970374827562748.32424197133132887.328952740.6197220413165.2√3172.9√3018.5√197338992076.72014.91744.7197418782902.7√2956.7√2771.4√197521972354.6√2215.6√1837.31976270925632516.72223.1197729172555.32439.51953.1197820863311.8√3288.7√3057.1√197927073018.5√2987.6√2671.1198052372331.42192.41852.8198118813589.8√3620.6√3026.2√198227302223.221231559.41983449225339.825092068.9198416333404.5√3335√2887.2√198523862732.8√2624.8√2061.2198622763172.9√3072.5√2678.8√198727492146.120381952.4198828782794.62848.62493.5198952181806.51798.71559.4199037252871.82740.62501.2199136012717.42663.42223.2199221092261.9√2200.2√1930199323681667.51505.41073199420772663.4√2524.4√2074.41995328626172547.62316199630681953.11814.21405199725862003√2887.2√2362.3199825761953.117371335.5199919331914.5√1621.21312.4200025081891.41582.61289.2桥水库灌区水量供需平衡分析表 表4-12来水量 （万m3）基准年2000水平年2010水平年2020...
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