碹 xuàn <名> 桥梁、涵洞、矿井井下巷道及硐室等工程建筑中永久性拱形支架 [arch] 碹 xuàn <动> 用砖、石或者混凝土等砌拱 [build arch by laying bricks or stones]。如:砼砌碹硐室、碹涵洞;碹拱;碹窑
研究了玻璃熔窑大碹的受力状况。
最后自下而上进行砼碹，既安全又快速，取得了良好效果。
Finally concreting from bottom to top, which are safe, fast and have obtained good result.
一般的棚式支护、砌碹支护等传统方式无法解决这一问题。
The traditional methods, such as bar supporting, arching, masonry-lining supporting and etc, cannot resolve this problem.
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