多煤层开采采场围岩内部应力光弹力学模拟研究

The optics-elastic simulation study on the stress of the surrounding rock of the coal face in multi-coal seam mining

应用相似理论和光弹性力学模拟实验方法 ,对多煤层同采条件下采场围岩应力场特点以及相互影响关系进行了研究 ,得出了 3组 4层煤开采时采场围岩应力分布规律、应力集中程度及其相互之间的影响范围和影响程度 .模拟结果对合理确定煤层群开采顺序以及回采巷道和区段煤柱合理布置具有理论和实际意义 。

By using analogy theory and optics elastic stimulated experiment, the stress field specialty of the surrounding rock in coal face and its influencing relation mutually are studied. It attains the law of the stress distribution, the extent of the stress concentration, the influencing range and its influencing extent. It is considered that the conclusions have theoretical and practical meaning to determining the reasonable mining sequence and the arrangement of mining roadway and its protective coal pillar in multi coal seam mining. It also has provided some gist for the theoretical study on the ground pressure and productive practice.