Erratum for “Safety Risks and Protection Measures for City Wall during Construction and Operation of Xi’an Metro” by Junling Qiu, Yiwen Qin, Zhihua Feng, Lixin Wang, and Ke Wang

The authors gratefully acknowledge the financial support by the National Key R&D program of China (No. 2018YFC0808706); the National Natural Science Foundation of China (No. 51978066); the Open Fund for Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering (No. YT201905); the Project on Social Development of Shaanxi Provincial Science and Technology Department (Nos. 2018SF-382 and 2016SF-412); the Special Fund for Basic Scientific Research of Central Colleges of Chang’an University (Nos. 300102219117, 310821172004, 310821153312, and 310821173312); and the Fundamental Research Funds for the Central University, CHD (Nos. 300102219723, 300102219716, and 300102219711). Meanwhile, the authors sincerely thank Rodney Sheldon Garnes for his help in the language modification of this paper.