Research On Islands Coal Face Pressureregularity And Advance Roadway Control Technology

To avoid interference between the production and continue Face, Prevention of spontaneous combustion and coal seam gas, Face between mining area sometimes forced to adopt jump continue mining methods, thus forming at least one region in the mining face in strike direction along both sides of the face in mined-out area, or working face three times, all around are goaf, so the working surface is called island face. Island face help to improve mining recovery rate of coal resources, but because of the special structure of island face, making the island face pressure law of mine and surrounding rock damage and general appearance is very different from working face, where islands Face roadway problem has been troubled island face safe, fast recovery problem. In this paper, coal1026Suntan island face as engineering background, theoretical analysis, a comprehensive study of numerical simulation, field measurement, etc., to study the island face Strata law and advanced tunnel support technology. By numerical simulation, analysis and comparison of the scope of Pillar Stress semi islands island face and full face, while comparative analysis of tunnel surrounding rock island face in the original support technology under and supporting technology improved the deformation; by field measurement obtained island face laws of strata behavior; to study the correlation between two factors closer to the roadway through theoretical analysis; unconventional island face in obtaining and general islands Mine pressure rule based on the proposed the island face ahead of roadway control technology.