基于3Dmine—Midas GTS—FLAC 3D耦合技术分析采空区对竖井的影响

Analysis on the Impact of Goaf on Vertical Shafts Based on 3Dmine Midas GTSFLAC3D Coupling Technology

摘要:

为了研究兰陵县土山铁矿床采空区对主井的影响，本文采用3DMineMidas GTSFLAC3D耦合技术，建立了三维地质力学数值分析模型，模拟矿床开采对主井稳定性的影响。对主井井壁4条模拟监测线上的变形值（井壁倾斜值、井壁曲率和井壁竖向变形值）、井筒围岩最大压应力、最大剪应力、最大竖向位移量及井筒围岩塑性区分布特征进行了分析研究，准确模拟分析了井筒的安全稳定性。为研究复杂采空区及竖井的稳定性研究提供了新的解决思路。

Abstract:

In order to study the impact of goaf on main shaft of Tushan iron deposit, a 3D geomechanical numerical analysis model has been established by using 3DMineMidas GTSFLAC3D coupling technology, and the influence of deposit mining on the stability of main shaft has been simulated. The deformation values (inclination value, curvature value, and vertical deformation value), maximum compressive stress, maximum shear stress, maximum vertical displacement, and plastic zone distribution characteristics of the surrounding rock on four simulated monitoring lines of main shaft wall have been studied, the safety and stability of the shaft have been accurately simulated and analyzed. It will provide a new solution approach for the stability research of complex goaf and vertical shaft.