Prevention and control of coal burst on gob-side entry in deep coal seam with fully mechanized sublevel caving mining

作者：Cheng, Yunhai; Jiang, Fuxing; Hu, Zhaofeng; Lin, Jikai

来源：Chinese Journal of Rock Mechanics and Engineering, 2016, 35(S1): 3000-3007.

DOI：10.13722/j.cnki.jrme.2014.1417

• Coal pillar
• Fully-mechanized sublevel caving minings
• Gob-side entry
• Lateral pressures
• Prevention and controls
• Stress monitoring
• Structure modeling
• Sub-level caving

Coal burst is hard to control and induced easily in gob-side entry. In order to eliminate coal burst risk for fully-mechanized face, lacking protection seam to release rock pressure, with strong coal burst proneness located in over 1 000 m depth in Huafeng coal mine, the return air way of next working face was settled just below transportation lane floor of the mined working face, and no section coal pillar mining was realized. Support strength was calculated with strata structure model, and lateral pressure of gob-side which was obtained by generalized coulomb theory have been taken into consideration for support design. Regional early warning was realized by microseismic monitoring(MS) and AE(sound monitoring), while temporary warning was realized by on-line stress monitoring and drilling cuttings prediction. It shows that no coal burst risk existed in gob-side entry, So the previous blasting and large diameter pressure relief process could be eliminated. The research is of reference value for coal burst of gob-side entry prevention and control in deep coal mine.

• 出版日期2016
• 单位北京科技大学; 安徽大学; 山东科技大学