J. Cent. South Univ. (2021) 28: 981

DOI:https://doi.org/10.1007/s11771-021-4658-1

Erratum to: Experimental investigation on predicting precursory changes in entropy for dominant frequency of rockburst

WANG Chun-lai(王春来)¹, CHEN Zeng(陈增)¹, LIAO Ze-feng(廖泽锋)¹, HOU Xiao-lin(侯晓琳)¹,

LI Hai-tao(李海涛)², WANG Ai-wen(王爱文)³, LI Chang-feng(李长峰)¹, QIAN Peng-fei(钱鹏飞)¹,LI Guang-yong(李广永)¹, LU Hui(卢辉)⁴

1. School of Energy and Mining Engineering, China University of Mining and Technology Beijing,Beijing 100083, China;

2. Safety Technology Branch, CCTEG China Coal Research Institute, Beijing 100013, China;

3. School of Mechanics and Engineering, Liaoning Technology University, Fuxin 123000, China;

4. Center for Underground Construction and Tunnelling, Colorado School of Mines, Golden,Colorado 80401, USA

Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021

Erratum to: J. Cent. South Univ. (2020) 27: 2834-2848

DOI: https://doi.org/10.1007/s11771-020-4536-2

Because of an unfortunate mistake during the production of this article, the initial printed versions and the online PDF had incorrect DOI numbers. The DOI has now been corrected and synchronized with the correct DOIs of the HTML versions.

Corresponding author: WANG Chun-lai, PhD, Professor; Tel: +86-13811322376; E-mail: clwang@cumtb.edu.cn; ORCID: https://orcid. org/0000-0003-4935-4945

The online version of the original article can be found at https://doi.org/10.1007/s11771-020-4506-8