Reinforcement Technology of Roadway Surrounding Rock Influenced by Dynamic Pressure of Fully-mechanized Caving Face in Thick Coal Seam
Taking the surrounding rock control project of 20102 transport roadway as the research object,the deformation characteristics of roadway surrounding rock under the influence of dynamic pressure were analyzed.It was found that the deformation of transport roadway surrounding rock was mainly caused by roof subsidence and roadway wall convergence.According to the field conditions of transportation roadway and deformation characteristics of surrounding rock,a reinforcing technical scheme suitable for roadway surrounding rock of thick coal seam the influenced by dynamic pressure was developed,and it was combined with the original supporting system to resist the influence of strong dynamic pressure.After the engineering application,the maximum displacement of the roof and floor of the 20102 transportation roadway and the roadway side within the influence range of dynamic pressure were 341 mm and 492 mm respectively,and the deformation of surrounding rock was small on the whole,which can meet the needs of the transportation roadway for subsequent use.
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