无间柱连续采矿与两步骤采矿的地压规律对比研究

CONTRAST STUDY OF GROUND PRESSURE BETWEEN NON-PILLAR MINING AND PILLAR MINING

无间柱连续采矿是井下高阶段、一步骤回采的高效采矿技术。本文在阐明无间柱连续采矿内涵和具体方案的基础上 ,采用有限元数值分析 ,对阶段开采中用传统的两步骤开采技术和无间柱连续采矿技术的地压规律进行分析比较 ,得出地下金属矿阶段无间柱连续开采的地压转移规律 。

There is a general tendency to use continuous mining in underground metal mine. Non pillar continuous mining is regarded as a high efficient, high level and one step mining technology. Based on the concept of non pillar continuous mining, this paper employs finite element numerical method to contrast the ground pressure of non pillar continuous mining and pillar mining in underground metal mine. Stability status (including stress and displacement) is analyzed and results provide theoretical basis for application of non pillar continuous mining.