This study aims to investigate how branch roadways affect the dynamic disaster characteristics of outburst two-phase flow in coal mining.
Conducted physical simulation tests to analyze an outburst two-phase flow in roadways with and without branches.
Compared the average migration velocity, mass of pulverized coal, and impact forces between non-branched and branched roadways.
Measured static pressure and dynamic disaster-causing intensity during the experiments.
The average migration velocity of OTPF was greater in non-branched right-angle turning roadway than in branched right-angle turning roadway.
Impact dynamic disaster-causing intensity increased by 33.4% for branched roadway in the straight section and 19.2% in the turning section compared to non-branched.
Static pressure was lower under branched conditions, suggesting a reduction in pressure-related damage.