工作面断层带应力分布规律研究

Study on Stress Distribution Law in Fault Zone of Working Face

为了了解工作面断层带应力分布规律,利用FLAC3D数值模拟软件分析了不同工作面推进距离下,不同位置处上覆岩层的应力变化规律,发现断层与工作面的交界处岩层应力出现突变。根据工作面推进距离的不同,断层带可分为原岩稳定区、微裂隙区、裂隙张开区、塌陷区四个区域,对于回坡底煤矿而言,断层带应力值较小,巷道围岩在原支护方案下仍可维持稳定。

In order to understand the stress distribution law in the fault zone of the working face,this paper used the FLAC3D numerical simulation software to analyze the stress change law of the overlying strata at different positions under different advance distances of the working face.According to the different advancement distance of the working face,the fault zone can be divided into four areas:the original rock stability zone,the micro-crack zone,the fracture opening zone and the collapse zone.For Hui-podi Coal Mine,the fault zone has a smaller stress value and the surrounding rock of roadways can still maintain stability under the original support plan.