基于改进Haskell模型的断层滑移型岩爆震源模拟研究

发布时间：2018-02-05 03:02

本文关键词： 断层滑移岩爆改进的Haskell模型离散元震源模拟　出处：《中国安全科学学报》2016年08期 　论文类型：期刊论文

【摘要】：断层滑移型岩爆事件已经成为影响地下矿山安全开采的重大问题。为深入了解断层滑移型岩爆事件对岩体及支护系统的影响,采用三维离散元程序3DEC,开展断层滑移的数值模拟研究。通过比较常用的震源模型,根据断层滑移形状及滑移特征,构建基于改进Haskell模型的断层滑移型岩爆震源模型。从荷载施加、断层面滑移及震源远区岩体质点振动响应等方面,验证改进的Haskell模型在模拟断层滑移方面的有效性。改进Haskell模型的计算结果与位移理论计算公式、质点振动速度经验公式等结果一致,结果表明,改进的Haskell模型能够很好模拟断层滑移震源特征以及合理的岩体震动响应。
[Abstract]:Fault slip rockburst has become a major problem affecting the safe mining of underground mines. In order to understand the influence of fault slip rockburst on rock mass and support system, 3D discrete element program 3DEC is adopted. The numerical simulation of fault slip is carried out. According to the shape and characteristics of fault slip, the common seismic source model is compared. A fault slip rock detonation source model based on the improved Haskell model is constructed, which includes load application, fault plane slip and vibration response of rock mass particles in the far area of the earthquake source, and so on. The effectiveness of the improved Haskell model in simulating fault slip is verified. The calculated results of the improved Haskell model are consistent with those of the displacement theory formula and the empirical formula of particle vibration velocity. The results show that the improved Haskell model can well simulate the source characteristics of fault slip and the reasonable response of rock mass vibration.
【作者单位】：中南大学资源与安全工程学院;吕勒奥理工大学采矿与岩土工程系;国家安全生产监督管理总局研究中心;
【基金】：国家自然科学基金面上项目资助(41272304,41372278) 中南大学中央高校基本科研业务费专项资金项目(2013zzts058) 瑞典政府机构创新基金资助(Vinnova)
【分类号】：TD32
【正文快照】： 随着地下矿山尤其是硬岩矿山开采深度的增大,断层等大型地质结构已经成为诱发岩体震动或者岩爆的主要问题源之一。岩爆发生时,岩体内原先储存的能量突发地急剧释放,导致岩石碎片从岩体中剥离、弹射,造成人员伤亡与设备毁坏,高强度的岩爆甚至会造成局部区域的地震活动[1]。辽宁

【参考文献】