Analysis of factors of top coal caving in fully mechanized sublevel caving face in soft coal and control

• 来源期刊: 煤炭学报（英文版）
• 年，卷（期）: 2007,（3）
• 页码范围: 301-305
• 页数: 5页
• 语种: 英文

摘要

According to the analysis of the mechanism of top coal caving, the caving condition was pointed out, and many factors of caving were also determined. Then the relationship between factors and caving was studied. Based on the above research, one effective method by using field monitoring was brought forward to determine the controlling factor. Then some related key technologies were provided, such as keeping the integrality of the top-coal, raising the horizontal resistance of supports and decreasing the real end-face distance etc.. At last one application of this method was presented, and it was proved to be an effective method.