Soft Rock Roadway Reinforcing Support Calculation and Numerical Simulation Based on Rheological Model

This article proposed U-shaped steel bracket reinforcing support program for latter continuing deformation of soft rock roadway in Weibei Mining Area, researched reinforcement supporting strength parameters and supporting effects by using theoretical calculations and numerical simulation. Firstly, the article tested major rock physical and mechanical parameters of the major surrounding rock，learned that the roadway surrounding rock is swelling and low-intensity soft rock with strong rheological properties. This article argues that the deformation of roadway is mainly rheological deformation in later periods of the initial support, so the article took this kind of rheological deformation as supporting objects, and calculated reinforcement supporting strength based on rheological model. Finally the article analyzed reinforcement supporting effect by using FLAC^3D, proved that the reinforcing supporting projects was reasonable and effective.