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白鹤滩水电站主体全面开工

2017-08-24 05:41:44   中国青年网

对于地厂项目部段兴平来说,2015年9月一个周六的记忆最为深刻。“我发现监测统计图表上显示数据异常,当天晚上右岸地下厂房发出了噼里啪啦声。顶拱上游侧拱肩的喷层体出现了开裂、掉块。”应该是岩体能量集蓄到一定时间的爆发,表面喷层脱落,如果不及时“抢救”,最坏有坍塌的可能。

洞室开挖已经进行到30米,项目部暂定了开挖施工,采取针对性补强加固措施,前后用时一年半。在洞室开挖以及维护的过程中,除了应对这样的危急情况,更多的要未雨绸缪。“比如我们会均匀地喷射掺加了钢纤维的混凝土到岩面上,厚度10厘米到20厘米,好像为岩体形成一个完整的鸡蛋保护壳。”

/环保前景/

构建长江生态屏障

减少排放二氧化碳5160万吨

水电站总装机容量1600万千瓦,多年平均发电量624.43亿千瓦时,相当于北京市2015年全年用电量的三分之二,几乎能满足杭州市2015年全年用电需求。白鹤滩水电站能源引擎的作用毋庸置疑。

“以白鹤滩水电站为点,其供电辐射范围近包括四川云南两省,远达华东华中。是西电东送的骨干电源点。”中国电建集团华东勘测设计研究院有限公司白鹤滩设计项目部副经理何明杰介绍,加上金沙江下游的乌东德、溪洛渡、向家坝这三个电站总装机容量达4646万千瓦,年发电量达1900亿千瓦时,相当于“两个三峡工程”。

另外水电作为清洁能源替代其他化石能源,对减少雾霾、减少碳排放,以及中国能源结构调整来看具有现实意义。

白鹤滩水电站是构筑长江生态屏障的重要一环,与流域梯级水库群共同承担着涵养、修复长江流域生态环境的重大责任。白鹤滩水电站建成投产后,每年可节约标准煤约1968万吨,减少排放二氧化碳5160万吨、二氧化硫17万吨、氮氧化物约15万吨,能有效改善我国能源结构、减少大气污染物排放,节能减排效益显著。

未来在长江,以三峡工程和金沙江下游四座电站为骨干的水电群,加上葛洲坝工程,世界上最大的清洁能源走廊在长江形成。

/核心引擎/

单机容量世界第一

全部水轮发电机组“德阳造”

白鹤滩头顶多项世界级光环,而在“单机容量100万千瓦世界第一”这一荣耀背后,还闪耀着四川的智慧。

据三峡集团公司白鹤滩机电安装项目部副主任康永林介绍,白鹤滩水电站装机16台100万千瓦、总计1600万千瓦水轮发电机组,承担着水电站发电功能的核心部分,其中四川德阳东方电气集团东方电机有限公司承接了白鹤滩水电站左岸电站全部8台套水轮发电机组,及其附属设备的研发和制造。目前,正处于生产制造阶段。

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