采矿与安全工程学报Issue(1)：59-64,6.DOI:10.13545/j.cnki.jmse.2015.01.010
背斜构造成因机制及冲击地压灾变机理研究
Formation mechanism of anticline structure and its disastrous mechanism of rock burst
摘要
Abstract
Aiming at characteristics of rock burst induced by anticline structure, based on material mechanics and theory of Winkler beam on elastic foundation, mechanical model of anticline genesis was establish, the deflection, bending moment and strain energy of the model were deduced. By using UDEC numerical simulation, distribution laws of advanced abutment pressure affected by anticlinal axis were revealed, and surplus energy of E 0-E c at the peak of abutment pressure were studied. Results show that the formation of anticline is influenced by multiple factors. The smaller the buried depth of coal seam, bulk density of overlying strata, characteristic coefficient and foundation coefficient, the larger the tectonic stress, and the easier anticline structure can be formed. In addition, strain energy changes with its locations in anticline structure. The larger the tectonic stress, the smaller the flexural rigidity, and the larger the strain energy in micro-segment dx. With the continuous advancing of working face, the phenomenon of“connection-overlay-separation” of advanced abutment pressure and high tectonic <br> stress of anticlinal axis has been presented. Meanwhile, the closer the distance of working face to anti-clinal axes, the larger the surplus energy at the peak of abutment pressure, and the greater the occurrence possibility of rock burst.关键词
冲击地压/背斜构造/力学模型/数值模拟/支承压力/能量分布Key words
rock burst/anticline structure/mechanical model/numerical simulation/abutment pressure/energy distribution分类
矿业与冶金引用本文复制引用
顾士坦,黄瑞峰,谭云亮,李文帅,肖治民..背斜构造成因机制及冲击地压灾变机理研究[J].采矿与安全工程学报,2015,(1):59-64,6.基金项目
国家自然科学基金项目(51374140；51204102)；山东科技大学研究生科技创新基金(YC130304) （51374140；51204102）
