Economic Benefit Analysis of 12305 Upper Material Lane Along the Gob Leaving Lane Technology
In general,there are safety coal pillars with a certain width left between long wall working faces,which causes coal pillar losses;Under certain conditions,implementing pillar free mining has significant economic and social benefits.The trial implementation of pillar free mining and goaf retaining technology between the 12305 and 12304 working faces in a certain coal mine has been successful,achieving both pillar free mining and goaf retaining technology,providing a reference model and experience for the implementation of pillar free mining in subsequent working faces.In this regard,this article elaborates on the application of goaf retaining roadway in working faces,analyzes and compares economic benefits,and explores the pros-pects of goaf retaining roadway technology,in order to provide more effective technical support for coal production.
retaining roadway along goaftunnel supporteconomic benefits
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