关键词: 动压巷道, 数值模拟, 增强支护, 位移观测

Abstract: The upper part of 2501 transportation gateway in a mine in Shanxi is 2303 mining face. The dynamic pressure caused by the collapse of the upper mining face leads to serious deformation of the lower roadway and instability of the surrounding rock，which brings significant influence to the safe mining of coal in the working face. In order to solve the above problems，combined with the field conditions of the transpor⁃ tation roadway，the numerical simulation is used to study the strain evolution law of the surrounding rock of the roadway，and the technical scheme of the surrounding rock support of the dynamic pressure roadway is given. Numerical simulation is used to analyze the strain distribution of surrounding rock at 10，20，30，40 d. After 40 d，the surrounding rock and overlying rock mass of 2501 transport roadway are broken as a whole， and the original anchor and cable support measures could not meet the support strength requirements of dy⁃ namic pressure roadway. According to the results of numerical simulation，it is proposed to strengthen the roadway support by using the combination of pipe shed and U-shaped steel，so as to improve the strength of the surface protection and the deformation resistance of the surrounding rock. After the field application，the surrounding rock deformation control effect of 2501 transport crossheading is better，which can meet the needs of subsequent use. The research results and methods have certain guiding significance for other dy⁃ namic pressure roadway support.

Key words: dynamic pressure roadway, numerical simulation, enhance support, displacement obser? vation