Extraction of the remnant coal pillar in regular and irregular shapes : a case study

• Main Authors: Chen, Yong, Ma, Shuqi, Cao, Qijia
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Civil engineering; Left Coal Pillar; Longwall Retreat
• Online Access: https://hdl.handle.net/10356/139573
• Institution: Nanyang Technological University

With the increasing coal mining rate, many coal mines in China are facing the coal resource exhaustion problem. This paper presents a case study on extracting a coal pillar which was left in a longwall retreat mine, Wangzhuang mine, in China. The left coal pillars usually have boundaries of regular...