三山岛金矿控矿断层F1的力学性质及补强措施

作者以正在开采中的三山岛金矿采场为研究对象，分析矿区开采过程中的岩体结构特征及重力方向矿柱、护顶矿柱与控矿断层F1断层泥及其上覆岩体之间的关系和力学机制。通过试验研究了断层泥的物质成分和力学性质，总结了力学特性与断层泥厚度及含水量之间的关系。在此基础上提出锚固大于中倾角的结构面，提高结构面的抗滑阻力；增加含有高、陡倾角结构面矿柱的刚度等对矿柱的补强措施。对护顶矿柱提出预先锚固；分阶段开采的补强方法。在裂隙密集带设置排水设施，改善断层泥的赋存条件，提高它的力学性能。

THE MECHANICAL CHARACTERISTICS OF MINE-CONTROLLED FAULT F1,ON SANSHANDAO GOLD MINE AND REINFORCEMENT MEASURES

In this paper,Sanshandao Gold Mine,being mining,is stutied object.Rockmass structure,the relationship between mechanic characterisitics of ore pillars,top-supporting ore pillars,and fault gouge in mine-controlled fault F1 and its covering rockmass,were discussed.After experiment,material composition.mechanical characteristics of the fault gouge,and their relationship to mud thickness and water content were determined.Then-some reinforcement measures are proposed:1)to anchor middle-inclination structural plane forimprovement of rockmass slide resistance;2)to raise the stiffness level of ore pillars with high inclination;3)to anchor top-supporting ore pillars in advance and to mine ore at different stages i 4) to discharge water from fissure-dense zones for strenthening fault gouge.