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为研究区块煤体结构,以原生结构煤与碎裂结构煤为主,统计分析发现:原生结构煤与碎裂结构煤在力学参数裂缝指数及斯伦贝谢比上有明显差异。原生结构煤裂缝指数一般大于0.23,小于0.33,集中分布于0.29;碎裂结构煤裂缝指数一般大于0.31,小于0.41,集中分布于0.35。碎裂结构煤斯伦贝谢比一般大于0.05,小于0.15,集中分布于0.11;原生结构煤斯伦贝谢比一般大于0.13,小于0.24,集中分布于0.19。由此形成了相应的煤体结构划分标准。利用裂缝指数与斯伦贝谢比联合判识煤体结构准确率达到84%。
In order to study the structure of block coal, the primary structural coal and the fractured structural coal are mainly analyzed. The statistical analysis shows that the primary structure coal and the fractured structural coal have obvious differences in the mechanical parameter fracture index and Schlumberger ratio. The primary structural coal fracture index is generally greater than 0.23, less than 0.33, concentrated in 0.29; fractured coal fracture index is generally greater than 0.31, less than 0.41, concentrated in 0.35. The Schlumberger ratio of the fragmented structure is generally greater than 0.05 and less than 0.15, with a concentration of 0.11. The Schlumberher ratio of the primary structure is generally greater than 0.13 and less than 0.24, with a concentration of 0.19. The formation of the corresponding standard of coal body structure division. Using the crack index and Schlumberger joint detection of coal body structure accuracy rate of 84%.