Deep Mine Tunnel Surrounding Rock Deformation And Failure Analysis

Resource exploitation in deep mining engineering has been of great concern at home and abroad is an important issue. This paper Huating inclined thick coal seam of top coal mining process, in a deep state of the environment, the roadway pressure behavior around Rock, rock deformation serious theoretical analysis of the actual situation and its influencing factors a systematic exposition. Coal samples obtained through the field on the mechanical parameters of surrounding rock and the impact orientation to a large number of laboratory tests and research, the results show that the roof and floor rock of coal and the impact of a weak tendency, apparent brittleness of coal was obtained parameters of the mechanical properties of coal. Original rock of the mine field stress measurement, a preliminary analysis of the original rock stress distribution. On the basis of a steep seam mining on the layer of horizontal section of the special mining abutment pressure caused by the phenomenon, and analyzed theoretically. In order to further comparative analysis of the upper and lower layer wind tunnel and transport back to the roadway deformation mechanism, using numerical analysis software RFPA and FLAC are simulated. Spy on site drilling, equipment and other loose ring injury and deformation of the surrounding multi-information monitoring, combined with the deep surface deformation and integrated monitoring and bolt separation law (Cable) mechanical behavior of trial and testing, in-depth system analysis of complex geological Roadway Deformation and failure characteristics and laws of evolution. Ultimately determine the reasonable support of roadway forms and parameters, and through the rock loose ring on the test results are verified. Final analysis of the mechanism of deformation of laneway summed up the reasons for its instability failure, and proposed roadway damage control effective way to ensure roadway safety and stability under the conditions of the deep coal mining has important practical safety significance.