基于FLAC3D的冲击矿压围岩变形规律研究

Research on deformation law of surrounding rock under rockburst based on FLAC3D

为了研究冲击矿压围岩变形规律,确保矿井安全生产,采用理论分析和数值模拟等手段,理论分析了动静载荷叠加作用下诱发的巷道冲击破坏形式以及巷道冲击破坏必要条件,数值模拟了不同底板条件下巷道围岩塑性区的变化规律、不同水平应力条件下巷道围岩的水平应力分布以及不同能量的动载下巷道帮部水平速度态响应特征。研究为冲击矿压防治技术的制定提供了理论基础。

In order to study the deformation law of rock surrounding impact pressure and ensure the safety of mine production,theoretical analysis and numerical simulation are used to theoretically analyze the impact destruction forms of roadways induced by the superposition of dynamic and static loads and the necessary conditions for roadway impact destruction,the variation of the plastic zone of roadway surrounding rock under different floor conditions,the horizontal stress distribution of roadway surrounding rock under different horizontal stress conditions and the horizontal velocity response characteristics of roadway under dynamic load of different energy are simulated numerically.The research provides a theoretical basis for the formulation of impact pressure control technology.