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滇中引水工程开工 将惠及云南逾千万人
2017-08-04 22:06:07 中国青年网
新华社昆明8月4日电(记者 庞明广)历经数十年论证规划,滇中引水工程于4日正式开工建设。这项工程建成后将有效缓解云南中部地区多个城市的缺水问题,直接受益人口约1112万。
滇中引水工程建设动员大会于4日在云南省昆明市举行。据介绍,滇中地区地处长江、珠江、澜沧江和红河四大流域的分水岭地带,当地降雨量少,多年平均径流量仅占云南全省水资源量的12%,是全国有名的干旱区。与此同时,滇中地区是云南经济社会发展的核心区,经济总量占云南全省60%以上。
据介绍,滇中引水工程最初于上世纪50年代提出相关设想,在2016年列入了国家“十三五”规划纲要。工程建成后,可从金沙江干流引水至滇中地区,缓解当地城镇生产生活用水矛盾,改善区域内河道和湖泊生态及水环境状况,促进受水区经济社会协调、可持续发展。
按照规划,滇中引水工程建设总工期为96个月,按2016年第二季度价格水平估算,工程静态总投资达748.85亿元。工程从位于丽江市玉龙县石鼓镇上游约1.5公里的金沙江右岸取水,途经丽江市、大理州、楚雄州、昆明市、玉溪市、红河州,终点为红河州新背坡,输水线路全长约661公里。
中国工程院院士钮新强介绍,与同类工程相比,滇中引水工程技术挑战难度巨大。输水线路沿线共布置隧洞、渡槽、倒虹吸、暗涵等输水建筑物129座,其中隧洞63座、总长约607公里,占总干渠全长的92%,施工难度极大。
据介绍,滇中引水工程建成后以城镇生活和工业供水为主,兼顾农业和生态供水。预计到2040年年均引水量可达34.03亿立方米,其中供给城镇生活和工业用水22.31亿立方米,供给农业灌溉用水5亿立方米、向滇池等湖泊生态环境补水6.72亿立方米。
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