It has been proved that GPR is a feasible method to inspect the structure of tunnel concrete lining.

使用地质雷达对隧道混凝土衬砌结构进行检测，实践证明技术方法是切实可行的。

youdao

Steel lining, concrete lining and surrounding rock can work together to share internal water pressure.

在内水压力下，钢衬、混凝土衬砌和围岩可共同承载。

youdao

Construction of concrete lining at the time of the basic lofting lofting method consistent with the excavation.

混凝土衬砌时的施工放样基本与开挖放样方法一致。

youdao

All this concrete ends up lining streams and waterfalls, but it also has contributed to the "heat island" effect in Tokyo.

NPR: Public Works Endanger Japan's Environment