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六盘山隧道位于沪霍公路(G312线)宁夏回族自治区段隆德县和泾源县交界处,隧道于1997年建成通车,2012年1月11日凌晨该隧道局部混凝土塌落,造成隧道由西向东车道上方的拱顶部位形成一个长约10m、宽约1.2m,深浅不均匀的不规则空洞。空洞内鼓起一层白色防水材料,并且在塌落部位的前后85m范围内,衬砌结构有不同程度的裂缝。为保证行车安全,本着安全、经济的原则对原隧道的二衬塌落段进行加固处理设计。
Liupanshan tunnel is located at the junction of Huludao (G312 line) Ningxia Hui Autonomous Region Lund County and Jingyuan County, the tunnel was opened to traffic in 1997. In the early morning of January 11, 2012, concrete collapse in the tunnel caused the tunnel from west to east The vault above the formation of a length of about 10m, width of about 1.2m, uneven depth of irregular holes. Voids a layer of white waterproof material, and in the slump before and after 85m range, the lining structure has varying degrees of cracks. In order to ensure traffic safety, the design and construction of the second tunnel lining of the original tunnel shall be reinforced in accordance with the principle of safety and economy.