Abstract
The stability of roadway is subject to a variety of conditions, including geological conditions, and other natural factors can not be changed, it must be through supporting the roadway stability. At present the design of supporting parameters in the gateway have many methods, but there are some shortcomings. This paper used non-linear FEM to optimize the supporting parameters. The coal roadway minimum failure zone within surround rock has been set as objective function. The results show that: The support parameters and the failure zone within surround rock exist optimal relations, which can be used as a method of supporting design parameter.
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