Study on the Impact Resistance of Metal Flexible Net to Rock fall

Table 5

The antirock fall impact performance under different impact angles.

Inclination angle (°)	Remaining height (m)	Protection width (m)	Maximum instantaneous impact force on rockfall (kN)	Maximum instantaneous impact force of support rope (kN)		The final stoning position
				First supporting rope	Second supporting rope
0	−0.87	2.5	51.69	119.75	119.75	Metal flexible net
15	−0.28	14.09	49.74	130.45	106.24	Eject
30	0.025	19.47	44.50	130.13	92.00	Eject
45	0.129	14.90	39.31	119.06	79.50	Eject
60	0	7.49	35.35	105.75	65.69	Roll to the first supporting rope and eject
75	0	0.64	26.88	84.15	56.71	Roll out, almost no bullet appears