动力扰动下深部出矿巷道围岩的变形特征

王春,王成,熊祖强,程露萍,王怀彬

Deformation Characteristics of the Surrounding Rock in Deep Mining Roadway Under Dynamic Disturbance

Chun WANG,Cheng WANG,Zuqiang XIONG,Luping CHENG,Huaibin WANG

表2 矽卡岩和蛇纹岩岩体动力学软化参数指标

Table 2 Dynamical softening parameter index of rock mass of skarn and serpentine

岩性 冲击扰动次数n/次 抗压强度/MPa 变形模量/GPa 泊松比 cd/MPa φd/(°) τd/MPa Gd/GPa γd/ε 矽卡岩 0 22.29 153.16 0.27 7.30 19.86 15.35 60.30 2.55E-04 5 21.80 127.89 0.27 7.14 19.78 14.98 50.35 2.98E-04 10 20.53 112.50 0.27 6.74 19.56 14.04 44.29 3.17E-04 15 18.49 83.11 0.27 6.10 19.17 12.53 32.72 3.83E-04 20 15.66 69.86 0.27 5.21 18.53 10.46 27.50 3.90E-04 25 12.02 64.33 0.27 3.99 16.84 7.63 25.33 4.01E-04 蛇纹岩 0 14.98 103.34 0.24 4.97 18.65 10.03 41.67 2.41E-04 5 14.69 81.90 0.24 4.88 18.57 9.82 33.03 2.97E-04 10 13.69 67.08 0.24 4.58 18.27 9.10 27.05 3.36E-04 15 13.00 57.00 0.24 4.38 18.05 8.61 22.98 3.75E-04 20 10.28 50.65 0.24 3.56 17.02 6.70 20.42 3.98E-04