水庫概況
夏(xia)家寺水(shui)庫(ku)大壩在木(mu)蘭鄉內(nei),南距(ju)黃陂城區25千(qian)米(mi),地(di)(di)(di)(di)理坐標(biao)為(wei)東經114°28′,北(bei)緯31°03′,控(kong)制流域面積142平方千(qian)米(mi),回水(shui)涉及木(mu)蘭鄉東部。流域地(di)(di)(di)(di)處淺丘(qiu)平原地(di)(di)(di)(di)區,地(di)(di)(di)(di)勢自北(bei)向南漸(jian)傾。庫(ku)周(zhou)分水(shui)嶺多為(wei)孤(gu)立小(xiao)丘(qiu),高程在200米(mi)左右,中(zhong)部地(di)(di)(di)(di)勢平坦,高程50~100米(mi)。地(di)(di)(di)(di)層(ceng)為(wei)元(yuan)古界(jie)石英(ying)云母砂巖(yan),河(he)谷(gu)階地(di)(di)(di)(di)上覆第四(si)系堆積沖積層(ceng)。夏(xia)家寺河(he)自北(bei)注入(ru)水(shui)庫(ku),出庫(ku)后向南匯人灄水(shui)。流域屬北(bei)亞熱帶濕潤氣候,年平均氣溫16.3攝(she)氏度(du),全年無霜期240天。植(zhi)被(bei)有人造用材(cai)林和經濟(ji)林,樹種(zhong)有杉、油桐(tong)及果林。農作物以水(shui)稻為(wei)主,兼作小(xiao)麥、棉花、油菜。水(shui)庫(ku)水(shui)質總體評價為(wei)Ⅱ類。
水(shui)(shui)(shui)(shui)庫多年(nian)(nian)平均(jun)年(nian)(nian)來水(shui)(shui)(shui)(shui)量(liang)0.92億(yi)(yi)立(li)(li)方米(mi)(mi)(mi),多年(nian)(nian)平均(jun)年(nian)(nian)降(jiang)水(shui)(shui)(shui)(shui)量(liang)1170毫(hao)米(mi)(mi)(mi),4—9月降(jiang)水(shui)(shui)(shui)(shui)量(liang)占全年(nian)(nian)降(jiang)水(shui)(shui)(shui)(shui)總量(liang)的74.8%。夏家寺水(shui)(shui)(shui)(shui)庫為多年(nian)(nian)調節型水(shui)(shui)(shui)(shui)庫,正常蓄水(shui)(shui)(shui)(shui)位(wei)49.90米(mi)(mi)(mi),死水(shui)(shui)(shui)(shui)位(wei)44.87米(mi)(mi)(mi),設計洪(hong)水(shui)(shui)(shui)(shui)位(wei)51.20米(mi)(mi)(mi),校核洪(hong)水(shui)(shui)(shui)(shui)位(wei)52.87米(mi)(mi)(mi)。水(shui)(shui)(shui)(shui)庫總庫容2.896億(yi)(yi)立(li)(li)方米(mi)(mi)(mi),其中調洪(hong)庫容7900萬立(li)(li)方米(mi)(mi)(mi),興利(li)庫容1.206億(yi)(yi)立(li)(li)方米(mi)(mi)(mi),死庫容9000萬立(li)(li)方米(mi)(mi)(mi)。夏家寺水(shui)(shui)(shui)(shui)庫為河道型水(shui)(shui)(shui)(shui)庫,庫面(mian)面(mian)積(ji)28.93平方千米(mi)(mi)(mi),回水(shui)(shui)(shui)(shui)長(chang)度12千米(mi)(mi)(mi),平均(jun)庫面(mian)寬(kuan)800米(mi)(mi)(mi),最大(da)水(shui)(shui)(shui)(shui)深28米(mi)(mi)(mi)。
水庫效益
夏家寺水(shui)庫以(yi)灌溉(gai)、防洪(hong)為主,兼顧旅(lv)游(you)(you)(you)、養殖(zhi)、航運等功(gong)能,灌溉(gai)面積(ji)1.13萬公(gong)頃(qing)(qing),可養殖(zhi)水(shui)面2270公(gong)頃(qing)(qing)。電站裝機容量30千(qian)瓦(wa),年發電量5.7萬千(qian)瓦(wa)時。庫面水(shui)域已開發成(cheng)木蘭湖省級風景旅(lv)游(you)(you)(you)區。水(shui)庫防洪(hong)標準20年一(yi)遇,可減輕下游(you)(you)(you)6000居民、5000公(gong)頃(qing)(qing)農田的洪(hong)水(shui)威脅,蓄洪(hong)錯(cuo)峰,可提高灄水(shui)下游(you)(you)(you)河道防洪(hong)能力。水(shui)庫移民2.05萬人,淹沒耕地(di)1638公(gong)頃(qing)(qing)。
水利樞紐工程
夏(xia)家寺水庫樞紐(niu)工程由(you)大(da)壩(ba)(ba)(ba)(ba)、溢(yi)洪(hong)(hong)道(dao)、輸水涵(han)管組(zu)成。主壩(ba)(ba)(ba)(ba)為(wei)黏土(tu)心墻壩(ba)(ba)(ba)(ba),壩(ba)(ba)(ba)(ba)頂高程53.74米(mi)(mi)(mi),最大(da)壩(ba)(ba)(ba)(ba)高26米(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)軸(zhou)線長(chang)590米(mi)(mi)(mi)。副壩(ba)(ba)(ba)(ba)有(you)東(dong)、西2座,東(dong)副壩(ba)(ba)(ba)(ba)為(wei)均質土(tu)壩(ba)(ba)(ba)(ba),最大(da)壩(ba)(ba)(ba)(ba)高111.0米(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)軸(zhou)線長(chang)60米(mi)(mi)(mi);西副壩(ba)(ba)(ba)(ba)為(wei)黏土(tu)心墻壩(ba)(ba)(ba)(ba),最大(da)壩(ba)(ba)(ba)(ba)高15.0米(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)軸(zhou)線長(chang)100米(mi)(mi)(mi)。正(zheng)常溢(yi)洪(hong)(hong)道(dao)為(wei)開敞式寬頂堰,堰頂高程46.9米(mi)(mi)(mi),堰頂凈寬16米(mi)(mi)(mi),平板閘門(men),最大(da)泄量(liang)(liang)343立(li)方米(mi)(mi)(mi)每秒;非(fei)常溢(yi)洪(hong)(hong)道(dao)為(wei)自潰(kui)壩(ba)(ba)(ba)(ba),堰頂高程48.74米(mi)(mi)(mi),堰頂寬度100米(mi)(mi)(mi),最大(da)泄量(liang)(liang)1136立(li)方米(mi)(mi)(mi)每秒。東(dong)輸水洞為(wei)圓形(xing)(xing)有(you)壓隧(sui)洞,直徑(jing)1.7米(mi)(mi)(mi),進口(kou)底(di)(di)高程42.74米(mi)(mi)(mi),最大(da)輸水量(liang)(liang)12立(li)方米(mi)(mi)(mi)每秒;西輸水洞為(wei)圓形(xing)(xing)有(you)壓隧(sui)洞,直徑(jing)1.1米(mi)(mi)(mi),進口(kou)底(di)(di)高程38.74米(mi)(mi)(mi),最大(da)輸水量(liang)(liang)1.5立(li)方米(mi)(mi)(mi)每秒。
地理位置
夏(xia)家(jia)(jia)(jia)寺水(shui)(shui)(shui)庫(ku)位(wei)于(yu)(yu)位(wei)于(yu)(yu)中國(guo)湖(hu)北省武(wu)漢市黃陂區東(dong)北部木蘭(lan)鄉(xiang)境內。夏(xia)家(jia)(jia)(jia)寺水(shui)(shui)(shui)庫(ku)是以灌溉、防洪為主,兼顧旅(lv)游、養殖、發電等功能的(de)大(二)型水(shui)(shui)(shui)庫(ku)。因位(wei)于(yu)(yu)木蘭(lan)山東(dong)側木蘭(lan)鄉(xiang)境內,又稱(cheng)為木蘭(lan)湖(hu)。2007年經水(shui)(shui)(shui)利部批(pi)準為第七批(pi)國(guo)家(jia)(jia)(jia)水(shui)(shui)(shui)利風景區。下(xia)游流(liu)出 長堰(yan)河(灄水(shui)(shui)(shui)支流(liu))。