阴崇智对隧道的“病害”种类一清二楚。“每次走到重点区域，师父都会示意我们仔细测量记录。”樊思航说。“咚咚咚！”阴崇智举起检查锤，敲击在隧道壁一处裂纹上，“边墙里如果有空响，一敲就是发闷的嗡嗡声，发现不及时，掉下来的碎石就会砸到火车上。”由于隧道里部分“病害”隐藏在衬砌内部，肉眼无法查看，只能通过“听诊”的方式进行检查。每次“问诊”需要历时2个多小时，敲击2万多次才能完成。
Фото: Pierre Albouy / Reuters
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