Supporting And Numerical Simulation Of Deep Soft Rock Roadway Fitting Mutual Support

In the coal mining process, many coal mine tunnel located deep among weak rock. Deep weak rock has high pressure, low strength, rheological and other characteristics. Deep soft rock roadway. Not only complicated engineering geological conditions and severe technical support issues threaten production safety, but also to a large extent hindered the development of the coal industry. It produced some great variety of forms of support in the process of continuous practice. For example shed-type support, bolting and shotcrete lining, Arching support, combined support. But for deep soft rock roadway support is still in the exploratory stage manner.Based on the "repair technology of Zou Zhuang coal level track alleys in the east" project as the background. On the basis of mesh support, we proposed a new support model. It is the "chimeric complementary support mode."There is damage to the roadway original high stress, stress state change is large, the original form of a single support, not strict construction and other issues. In order to solve the problem of deep soft rock roadway deformation prone. Verify that the complementary retaining structure fitted with a network anchor, cable and grouting of rationality and effectiveness. Thesis laboratory tests, ABAQUS simulation and other research tools. Factors influencing the destruction of roadway surrounding rock deformation mechanism and so on for a more in-depth analysis. Made solid circle strong support theory, the test roadway support programs. Research results have certain reference value for the study of the stability of the deep level of soft rock roadway.