This paper put forward the concept of districting coal body ahead of mining face into 9 subareas which had respective different crack development characteristic on the basis of mining crack field.
提出了工作面前方煤体采动裂隙分区的概念，将工作面前方煤体分为9个不同的裂隙区，每个区裂隙发育特征不相同。
This paper put forward the concept of districting coal body ahead of mining face into 9 subareas which had respective different crack development characteristic on the basis of mining crack field.
提出了工作面前方煤体采动裂隙分区的概念，将工作面前方煤体分为9个不同的裂隙区，每个区裂隙发育特征不相同。
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