Field investigation of face spall in moderate strength coal seam at Vang Danh coal mine, Vietnam
Field investigation of face spall in moderate strength coal seam at Vang Danh coal mine, Vietnam
Face spall in moderate strength coal seam occurs less frequently but can be more severe and takes a longer time to remedy compared to face spall in the weak coal seam. This paper presents a field investigation of face spall in moderate strength coal seam at Face I-8-1, Vang Danh coal mine, Quang Ninh coal field, Vietnam.