1. FengJimeng, Qiu Wenge, Wang Yusuo, Wang Haiyan. Study of Defect Distribution Regularity in Existing Tunnelsand the Classification of Tunnel Environments[J]. Modern TunnellingTechnology, 2013, Vol. 50, No. 4, pp.35-41.
2. Li Xiaokun, Shi Chenghua, Lei Mingfeng. Defect Classification of Tunnel Structures in Sulfate Environments[J]. Modern TunnellingTechnology, 2011, Vol. 48, No. 4, pp.19-24.
3. Guan Baoshu. Collection of Key Points for Maintenance Management of Tunnel Engineering[M]. Beijing: China CommunicationsPress, (2004).
4. Pei Taotao, Chen Liwei, Shi Xianming, Shi Yalong. Study on treatment measures of cracks in lining of existing railway tunnel[J]. Railway Engineering, 2013, No. 4, pp.76-79.
5. Li Wei, Yang Dan, Li Qing. Application of Capillary Drain Pipe in Leakage Treatmentof Existing Tunnel[J]. China Building Waterproofing, 2013, No. 4, pp.30-33.