脆弱指标法在王庄煤矿下组煤底板突水危险性预测评价中的应用
취약지표법재왕장매광하조매저판돌수위험성예측평개중적응용
Application of Fragile Indicators Law for Floor Outburst Risk Predict Evaluation under Group of Coal in Wangzhuang Coal Mine
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