Happy Valley Floor Gob Stability Analysis And Treatment Measures

The mining is an important underpinning industry of our country. In the mining engineering all of the country, The shape of mined area are various, Once these mined areas are not steady, there will be able to cause many harms ,such as the earth's surface sedimentation,blast wave, the ecological environment destroyed and so on. These harms will create heavy loss for the production and the life. Therefore, in order to provide the theory basis for the mine safety in production and the following resources recycling, it is necessary to analyze the stability and the corresponding disposal measure of mined area.First,The paper summarized the research literature about the stability and the processing of mined area in the domestic and foreign, concluded the factors of affecting the stability of mined area, and Systematically summarized the analyse methods of the stability and the the processing of mined area;Secend,According to the project characteristic of the mine in Paomaping, The author analyzed the jointed and fractured properties the physics mechanical properties of the rock mass,through the scene investigation of the rock mass structure and the indoor mechanical testing .and based on this, the author proposed that we can use the Rock Mass Rating(RMR) and the Q system to investigate the stability of mined area. Synchronously With theoretical analyses and three-dimensional finite element numerical simulation,The author uses the 3D-σ numerical software to analyze the stability of the original mined area in Paomaping;Finally,Based on analyzing all kinds of treatment measures of the mined area and considering the actual circs, the author proposed the reasonable treatment measures of the mined area.The rearch result of this subject has important guidance meaning to insure the mining's long safety of lower mined area in Paomaping.