In order to reduce the waste of coal resources and increase the stability of tunnels,the design work of retaining protective coal pillars was carried out for the 2302(upper)working face of Yuecheng Coal Mine.Combining theoretical calculation methods and numerical simulation methods,after comprehensive analysis,it is determined that leaving a small coal pillar with a width of 6 meters is the most suitable.The stress variation law of the surrounding rock was analyzed,and the anchor mesh cable combined support method was adopted.The effectiveness of the support was verified through on-site monitoring.This method can contribute experience and reference for similar projects.
关键词
综采工作面/安全开采/小煤柱宽度/联合支护
Key words
fully mechanized mining face/safe mining/small coal pillar width/joint support
维普
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