金源矿区深部开采模拟及稳定性分析

发布时间：2018-03-11 19:45

本文选题：深部开采　切入点：采场稳定性　出处：《矿业研究与开发》2017年02期 　论文类型：期刊论文

【摘要】：灵宝金源矿区已进入深部开采,采场稳定性对矿区的安全开采的影响极大。使用FLAC~(3D)软件,对该矿区进行了深部开采的数值模拟,其模拟结果表明:矿区最大主应力主要集中于各开采阶段工作面顶部和底部围岩,两帮围岩也出现不同程度的应力集中现象;随着阶段开采向上推进,该矿区拉应力极值较小且基本保持不变,一般不会出现围压的拉伸破坏;中段开采的各阶段,底板均有不同程度的些许微弱底鼓现象。开采过程中应对顶板进行加固支护并密切监测其变化,由于出现了部分破碎围岩,可设立人工矿柱支撑,此外,可采取例如减小采场宽度的方法以增加采场稳定性,减少岩爆事故的发生。
[Abstract]:Lingbao Jinyuan mining area has entered the deep mining, the influence of mining safety mining of the mining area of the field stability greatly. The use of FLAC~ (3D) software, to simulate the mine deep mining numerical simulation results show that: the maximum principal stress in the mining area mainly concentrated in the mining working face at the top and bottom of the surrounding rock, two wall also appeared the phenomenon of stress concentration in different degree; with stage mining upwards, the area is smaller and the tensile stress value remained unchanged, generally does not appear tensile failure of confining pressure; the middle stage of mining, a weak bottom floor drum phenomenon in varying degrees. In the process of mining roof reinforcement to support and close monitoring of the changes, as part of the broken rock, can set up artificial pillar support, in addition, can be taken to decrease the mining methods such as field width in order to increase the stability of stope, reduce rock burst accident It happened.

【作者单位】：北京科技大学土木与环境工程学院;北京科技大学金属矿山高效开采与安全教育部重点实验室;鞍山钢铁集团矿业公司;
【基金】：国家自然科学基金资助项目(51574014) 国家重点基础研究发展计划(973)资助项目(2015CB060200)
【分类号】：TD853.3

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