How to reasonably determine the coal caving step distance?
How to reasonably determine the coal caving step distance?
发布时间：2025-01-14 00:11:31
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答案：【计分规则】: First of all, many factors should be considered, such as the thickness of top coal, hardness of top coal, caving of top coal, roof conditions and cutting depth of shearer. (5points)Secondly, it uses many methods to determine synthetically: true measurement method, similar simulation method and numerical simulation method. (5points)
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