矿岩开挖松动区厚度预测及非爆机械化开采判据
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景岳,王少锋,鲁金涛
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Thickness Prediction of the Excavation Damage Zone and Non-explosive Mechanized Mining Criterion
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Yue JING,Shaofeng WANG,Jintao LU
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表3 监测孔松动区测量数据
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Table 3 Measurement data of the EDZ in monitoring holes
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孔号 | 钻孔与水平面夹角θ/(°) | 钻孔中松动区位置L1/m | 钻孔后矿岩垮落厚度L2/m | 松动区实际厚度L3/m | 松动区平均厚度L4/m |
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1 | 0 | 3.26 | 0.15 | 3.41(舍去) | 2.33 (左侧:1号~6号孔) | 2 | 0 | 2.56 | 0.10 | 2.66 | 3 | 0 | 2.70 | 0.05 | 2.75 | 4 | 0 | 1.99 | 0.12 | 2.11 | 5 | 0 | 2.10 | 0.13 | 2.23 | 6 | 0 | 1.66 | 0.26 | 1.92 | 7 | 0 | 2.65 | 0.07 | 2.72 | 2.49 (外侧:7号~12号孔) | 8 | 0 | 2.15 | 0.16 | 2.31 | 9 | 0 | 2.33 | 0.02 | 2.35 | 10 | 0 | 2.44 | 0.18 | 2.62 | 11 | 0 | 1.85 | 0.47 | 2.32 | 12 | 0 | 2.22 | 0.39 | 2.61 | 13 | 0 | 2.40 | 0.05 | 2.45 | 2.69 (右侧:13号~18号孔) | 14 | 0 | 2.70 | 0.06 | 2.76 | 15 | 0 | 2.65 | 0.13 | 2.78 | 16 | 0 | 2.67 | 0.12 | 2.79 | 17 | 0 | 2.68 | 0 | 2.68 | 18 | 0 | 3.03 | 0.13 | 3.16(舍去) |
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