金川二矿区地应力特征及其对巷道变形破坏的影响研究

李光,马凤山,郭捷,邹龙,寇永渊

Study on Ground Stress Characteristics and Its Influence on Roadway De-formation Failure in Jinchuan No.2 Mining Area

Guang LI,Fengshan MA,Jie GUO,Long ZOU,Yongyuan KOU

表1 金川二矿区地应力实测

Table 1 Measured values of in-situ stress in Jinchuan No.2 mining area

编号 深度/m σH/MPa σh/MPa σv/MPa k 1 20 2.4 2.3 0.54 4.444444 2 44 4.2 3.5 1.19 3.529412 3 120 7.8 3.1 3.24 2.407407 4 240 15.2 14.6 6.48 2.345679 5 375 18.7 22.2 12.42 1.95459 6 460 24.5 13.3 12.96 1.505636 7 480 24.5 15.4 12.96 1.890432 8 480 21 13.2 18.6 1.129032 9 550 19.8 10.8 10.13 1.890432 10 570 26.7 12.4 18.6 1.435484 11 730 17.3 11.5 20.4 0.848039 12 730 22.4 6.4 15.1 1.483444 13 730 20.7 11.9 16.1 1.471591 14 730 19.9 11.6 16.4 1.285714 15 730 20.2 11.9 16.9 1.213415 16 740 19.9 7.4 18.5 1.195266 17 740 25.3 7.1 15.9 1.075676 18 750 25.9 10.8 17.6 1.591195 19 755 24.5 9.2 17.3 1.416185 20 780 20.2 13.1 22.5 0.897778 21 780 28.1 12.9 25.4 1.106299 22 790 26.2 15.6 22.5 1.164444 23 810 22.4 14.3 26.6 0.842105 24 816 25.5 6.7 22.9 1.113537 25 820 21.4 20.8 24.2 0.884298 26 938 37.1 36.4 26.9 1.379182 27 970 25.5 23.9 31.6 0.806962 28 970 22.2 9.3 29.7 0.747475 29 970 37.5 13.2 27.3 1.373626 30 970 34.5 14.2 24.2 1.42562 31 975 39.3 31.4 28.9 1.359862