Research Article

Deformation Failure and Support Test of Surrounding Rock in Deep Arched Roadway with Straight Wall

Table 1

Main physical and mechanical parameters of different proportioning specimens.

Serial numberMaterial ratioVolumetric weight (kN/m3)Tensile strength (MPa)Compressive strength (MPa)Elastic modulus (GPa)Internal friction angle (°)Cohesion (kPa)
Quartz sand: cement: plaster

11 : 0.30 : 0.7019.10.465.330.6532.40.15
21 : 0.40 : 0.6018.50.566.340.6331.50.13
31 : 0.50 : 0.5019.00.837.570.5430.60.14
41 : 0.60 : 0.4018.91.018.020.7729.80.16
51 : 0.70 : 0.3019.11.5113.010.7829.60.11
61 : 0.15 : 0.3418.90.232.270.8128.30.12
71 : 0.19 : 0.3019.90.263.800.8628.60.14
81 : 0.25 : 0.2419.30.626.070.8328.40.13
91 : 0.30 : 0.1919.00.647.110.8432.60.17
101 : 0.34 : 0.1519.20.898.990.7932.80.11
111 : 0.11 : 0.2318.60.061.640.7733.60.10
121 : 0.13 : 0.2019.30.132.200.6531.70.15
131 : 0.17 : 0.1618.60.273.510.6931.50.14
141 : 0.20 : 0.1318.80.344.270.6232.00.09
151 : 0.24 : 0.1918.60.415.120.6629.60.08
161 : 0.08 : 0.1818.70.050.530.6431.70.11
171 : 0.10 : 0.1518.30.071.500.5833.60.12
181 : 0.56 : 0.5618.40.111.790.5933.50.14
191 : 0.15 : 0.1018.30.131.950.5832.40.07
201 : 0.18 : 0.0818.60.201.800.6232.70.13
211 : 0.06 : 0.1418.20.040.710.6330.10.11
221 : 0.08 : 0.1218.30.051.010.7132.90.09
231 : 0.10 : 0.1118.10.061.620.7233.50.14
241 : 0.12 : 0.0818.70.172.200.5433.80.13
251 : 0.14 : 0.0618.60.132.060.5330.30.12

Note: The quality of water in the process of mixing different materials is always one-sixth of the total mass of the materials.