This paper introduces excavation of the unfavorable geological section of tunnel project of Wanjiazhai YRDP, temporary brace and construction of concrete lining.

文中介绍了万家寨引黄隧洞工程不良地质洞段施工中的开挖，临时支护，混凝土衬砌等。

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The temporary concrete lining guard wall method was used in excavating vertical shaft.

竖井开挖采用了临时混凝士衬砌护壁措施。

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Wet shotcrete, including wet steel fiber shotcrete and wet plain shotcrete, has been adopted for the temporary and permanent lining of Qinling Railway Tunnel and good results have been obtained.

秦岭隧道采用了湿式喷混凝土（包括湿喷钢纤维混凝土和湿喷素混凝土）进行初期支护和永永支护，取得了良好的效果。

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Like contractors who get paid to rebuild homes and buildings, RV makers figure to get a shot in the arm, as new customers looking for temporary housing and a home-based escape route for the next disaster start lining up.

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