Research on Stress Analysis and Control of Surrounding Rock of Trapezoidal Roadways Based on Complex Variable Theory

Table 1

Tangential stress value at each point around trapezoidal roadways (unit: MPa).

	0°	15°	30°	45°	60°	75°	90°	105°	120°	135°	150°	165°	180°
Tangential stress	13.792	12.678	10.707	9.496	9.539	11.132	14.785	19.6	19.706	14.45	10.139	7.994	7.372