1. Doctoral Student, School of Science, Inner Mongolia Univ. of Technology, Hohhot 010051, China.
2. Professor, School of Science, Inner Mongolia Univ. of Technology, Hohhot 010051, China; Professor, School of Mechanical Engineering, Inner Mongolia Univ. of Technology, Hohhot 010051, China.
3. Associate Professor, School of Civil Engineering, Inner Mongolia Univ. of Technology, Hohhot 010051, China (corresponding author).
4. Professor, School of Mining and Technology, Inner Mongolia Univ. of Technology, Hohhot 010051, China.
5. Professor, School of Civil Engineering, Inner Mongolia Univ. of Technology, Hohhot 010051, China.