厚硬顶板弱化前后垮落致灾数值模拟研究

吕闹,汪海波

Numerical Simulation of Collapse Disaster Before and After Weakening of Thick and Hard Roof

Nao LV,Haibo WANG

表3 顶板弱化前后距巷道口不同距离处的风速峰值

Table 2 Peak velocity of wind at different distance from roadway entrance before and after roof weakening

至巷道口距离/m 未弱化风速峰值/（m·s-1） 弱化后风速峰值/（m·s-1） 0 298.62 224.89 10 216.98 157.82 20 169.92 131.90 30 147.89 114.44 40 133.09 98.93 50 117.98 83.24 60 100.86 70.01 70 92.69 64.76 80 82.73 40.30 90 61.38 35.81