The paper did research on the thickness, depth, different spacing steel, and other bugs in the second concrete lining, through the model experiment of GPR in the highway tunnel lining detection.
本文通过地质雷达公路隧道衬砌检测的模型试验，研究了地质雷达检测二衬混凝土厚度、二衬中的不同深度，不同间距钢筋以及衬砌模型中的缺陷。
The design technology-way of high-performance concrete mix-ratio projects used in second-level lining of Xiamen-xiang an undersea tunnel engineering is discussed.
阐述了厦门海底隧道衬砌高性能混凝土配合比方案的设计技术路线。
For the lining of the main body (2) of the dust chamber (1) and first and second stage cyclones (3, 4) are used the non-porous and wear proof material, for example concrete.
集尘室(1)的主体(2)以及第一和第二级旋风器(3,4)的内衬使用无孔耐磨材料，例如混凝土。
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