Comprehensive evaluation method for judging damage grade of coal and rock mass of coal face
The invention discloses a comprehensive evaluation method for judging the damage grade of a coal-rock mass of a coal face, which comprises the following steps of: firstly, collecting a micro-seismic signal during the stoping period of the coal face, and determining a damage area; according to the co...
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| creator | WANG LEI TANG JINZHOU BU YISHUN ZHOU KUNYOU YANG JING KAN JILIANG |
| description | The invention discloses a comprehensive evaluation method for judging the damage grade of a coal-rock mass of a coal face, which comprises the following steps of: firstly, collecting a micro-seismic signal during the stoping period of the coal face, and determining a damage area; according to the collected micro-seismic signals, four micro-seismic indexes in the recovery process of the damaged area are calculated respectively; according to a calculation result, obtaining a judgment result of each micro-seismic index on each damage area; then, according to changes of four index values of the whole stoping stage, weights are given to all microseismic indexes through an entropy weight method; calculating a comprehensive evaluation index psi of the damage area based on the weight and the judgment result of each index in the recovery period of each damage area; finally, the coal rock mass damage grade of each damage area is judged according to the psi value. Therefore, the damage grade of the damage area in front |
| format | Patent |
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Therefore, the damage grade of the damage area in front</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES DETECTING MASSES OR OBJECTS ELECTRIC DIGITAL DATA PROCESSING GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR TESTING |
| title | Comprehensive evaluation method for judging damage grade of coal and rock mass of coal face |
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