Study on Coal Body Rational Cracking Place of Hydraulic Extrusion Measure for Prevention of Outburst

摘要

In order to understanding the cracking course of the hydraulic extrusion measure to the coal body, in this paper, large-scale numerical simulation software ANSYS is used to simulate and solve the hydraulic extrusion measure at the driving working face. It is analyzed that the rational cracking place of outburst prevention. Combined with the reality, the rational cracking place of outburst prevention is obtained. It is very useful to us while choosing rational injecting water parameters at hydraulic extrusion measure.