采矿与安全工程学报Issue(3)：401-406,6.DOI:10.13545/j.cnki.jmse.2015.03.009
深厚表土综放采场顶板运动特征实测与数值分析
In-situ observation and numerical analysis of roof movement features of fully-mechanized sublevel caving face with deep alluvium
摘要
Abstract
By using the in-situ observation and numerical simulation, the roof moving features of ful-ly-mechanized sublevel caving face with deep alluvium has been studied. The results can be drawn as follows:1) The time effect of the load of supports in the fully mechanized caving face with deep allu-vium is significant. 2) While with advance of working face, the break of the immediate roof forms“rock-gangue”structure periodically and the break of the basic roof induces weighting of working face. 3) The weighting order along incline direction of the working face follows roof fracture characteristics of general working face. 4) The area of overlying strata area to be controlled by supports is large, and the strength of weighting induced by the upper basic roof breaking is large. 5) The advance stress fluc-tuation monitoring technology offers a new method for weighting prediction in working face. Finally, the suggestion about roof accident prevention of fully-mechanized sublevel caving face with deep allu-vium was proposed. The study results can be useful for roof control design and roof accidents preven-tion in fully-mechanized sublevel caving face with deep alluvium.关键词
综放采场/顶板运动/深厚表土/现场实测/数值分析Key words
fully-mechanized sublevel caving face/roof movement/deep alluvium/in-situ obser-vation/numerical analysis分类
矿业与冶金引用本文复制引用
郭信山,刘金海,姜福兴..深厚表土综放采场顶板运动特征实测与数值分析[J].采矿与安全工程学报,2015,(3):401-406,6.基金项目
国家自然科学基金项目(51274022)；中央高校基本科研业务费项目(3142014067)；河北省高等学校科学技术研究项目(QN2014329) （51274022）
