The Analysis on Roof Structure and Support Resistance in Extra-thick Coal Seam
The traditional fully mechanized caving face support resistance determined estimation method is based on theoretical estimation,measured statistic method and theoretical analysis.Along with caving mining mined thickness is enlarging in extra-thick coal seams,the scope of controlled strata will expand.Top-coal released coal is impossible to fill goaf in a short time.For extra-thick coal seam,roof structure and support resistance analysis is also different from other coal seam structure.Taking Tongxin mine as research object,from the caving mining overlying strata of roof structure and its formation conditions,it has been confirmed the roof structure and the thickness of related strata.And it is concluded that the range of support working resistance during periodic weighting as well as during the non-pressure in two working face mining in Tongxin mine.The statistical results of the field observation data agree with the theoretical calculation results,which shows that established description of the mathematical model on the working surface of the overlying strata structure is reasonable and it can reflect the actual conditions of the support.
roof structure support resistance rock deformation pressure
Dong Huadong Zhang Hongwei Chen Ying Zhu Zhijie
College of Mining, Liaoning Technical Univisity, Fuxin, 123000, China
国际会议
International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)
辽宁阜新
英文
339-345
2013-07-13（万方平台首次上网日期，不代表论文的发表时间）