State key laboratory of mining response and disaster prevention and control in deep coal mines Huainan 232001 ChinaSchool of Earth and Environment Anhui University of Science and Technology Huainan 232001 China;
State key laboratory of mining response and disaster prevention and control in deep coal mines Huainan 232001 ChinaSchool of Earth and Environment Anhui University of Science and Technology Huainan 232001 China;
School of Earth and Environment Anhui University of Science and Technology Huainan 232001 China;
School of Earth and Environment Anhui University of Science and Technology Huainan 232001 China;
Grouting behind the wall; Quality detection; GPR; Numerical simulation;