世界首座堆石混凝土一级建筑物顺利开仓浇筑
4月11日,东庄水利枢纽二道坝工程施工现场热火朝天。随着“开始浇筑”的口令发出,天泵将第一仓混凝土输送至二道坝仓面,东庄水利枢纽二道坝工程开仓浇筑。
“东庄水利枢纽二道坝工程是国内第一座采用堆石混凝土浇筑的二道坝工程。目前工程正抓紧推进。建成后,东庄水利枢纽的防洪能力将从10年一遇提升到50年一遇。”中国水利水电第八工程局有限公司东庄水利枢纽水垫塘二道坝工程项目部项目负责人秦民生说。
“普通混凝土是将骨料、水泥等一起拌和成成品混凝土后进行浇筑。东庄水利枢纽二道坝工程采用堆石混凝土浇筑,是先把石头堆起来,用天泵往石头缝隙间浇筑高强自密实混凝土。高强自密实混凝土坍落度大,自密实性能好,不用人工振捣,就可以把所有的缝隙填满。既节省成本又能更好地降低水化热对混凝土质量的影响。”陕西省东庄水利枢纽工程建设有限责任公司建设质量部主管李文欣说。
据了解,东庄水利枢纽二道坝工程高40.5米、坝顶宽6米、长70.9米。东庄水利枢纽二道坝工程堆石混凝土首仓浇筑方量为1380立方米。东庄水利枢纽二道坝工程堆石混凝土浇筑总方量约4万立方米,计划于2024年5月完工。二道坝工程建成后,东庄水利枢纽水垫塘、二道坝等工程将构成东庄水利枢纽泄洪消能系统。
来源:陕西日报
2023-04-18 16:37
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