Publication Information

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'https://openalex.org/W2350569049', 'https://openalex.org/W2348875213', 'https://openalex.org/W1995037802'], 'abstract_inverted_index': {'An': [0], 'important': [1], 'way': [2], 'for': [3, 21], 'mining': [4, 12, 47, 53, 121, 147], 'of': [5, 25, 31, 37, 55, 80, 86, 92], 'thick': [6], 'coal': [7, 32, 90], 'seam,': [8], 'full': [9, 56, 82], 'seam': [10, 57, 83, 91], 'fully-mechanized': [11, 58, 84], 'technique': [13], 'has': [14], 'been': [15], 'widely': [16], 'used.': [17], 'Roof': [18], 'accident': [19], 'accounts': [20], 'a': [22, 52], 'large': [23, 63], 'portion': [24], 'safety': [26, 30], 'accidents': [27], 'in': [28, 46, 51, 119, 126, 145], 'production': [29], 'mines.': [33], 'Hence,': [34], 'appropriate': [35], 'supports': [36], 'roofs': [38], 'are': [39, 105, 136], 'an': [40], 'issue': [41], 'to': [42, 76, 140], 'be': [43], 'seriously': [44], 'addressed': [45], 'operations.': [48], 'The': [49], 'roof': [50, 101, 127, 143], 'field': [54], 'workface': [59, 85], 'is': [60, 129], 'characterized': [61], 'by': [62], 'span': [64], 'and': [65, 70, 88, 100], 'height,': [66], 'complicated': [67], 'mine': [68], 'pressure': [69], 'significant': [71], 'control': [72, 128], 'difficulty.': [73], 'With': [74], 'respect': [75], 'the': [77, 81, 96, 111, 114, 120, 123, 141, 146], 'rigidity': [78], 'characteristics': [79], 'No.9': [87], 'No.10': [89], '**': [93], 'Coal': [94], 'Mine,': [95], 'support': [97, 102, 124, 134], 'working': [98], 'resistance': [99], 'intensity': [103, 125], 'parameters': [104], 'theoretically': [106], 'figured': [107], 'out.': [108], 'Along': [109], 'with': [110, 138], 'results': [112], 'from': [113], 'similarity': [115], 'simulation': [116], 'experiment': [117], 'conducted': [118], 'area,': [122], 'analyzed.': [130], 'And': [131], 'finally': [132], 'feasible': [133], 'requirements': [135], 'proposed': [137], 'regards': [139], 'particular': [142], 'conditions': [144], 'area.': [148]}, 'cited_by_api_url': 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