【摘要】 本文用相似材料模拟原理对辽源矿务局西安立并煤柱一采区开采进行了相似模型模拟，作了材料配比方面的研究；同时进行了位移和应力两种观测。更多还原

【Abstract】 A protecting pillar in a panel of an upright well is studied according to the imitating principles. The material compositions are studied. And, important results are obtained from the measurement of stress and displacement.更多还原