【摘要】 采用实验室物理相似模拟试验对坚硬煤层顶煤冒放性进行了研究,提出了坚硬顶煤的冒放性特征及工作面前方压力分布情况。更多还原

【Abstract】 This paper uses the laboratory physical resembles to simulate the top coal caving property of the hard coal seam,puts forward the top coal caving property characteristics of hard coal,and the circumstance of the pressure distributes in front of the working face.更多还原