Reliability analysis of the velocity matching of coal cutting and caving in fully mechanized top-coal caving face

• 来源期刊: 煤炭学报（英文版）
• 学科: 工学
• 年，卷（期）: 2002,（1）
• 页码范围: 68-72
• 页数: 5页
• 分类号: TD8
• 语种: 英文

摘要

The matching relationship between coal cutting and caving in fully mechanized top-coal caving face is analyzed in detail from the angle of reliability. The coupling equation of reliability is established correspondingly, and the mathematical equation of the coefficient of velocity matching of coal cutting and caving is obtained, which meets a certain reliability demand for making the working procedure of coal caving not influence coal cutting of coal-cutter. The results show that the relationship between the coefficient of the velocity matching and the reliability of coal cutting and caving system is linear on the whole when R<0.9. It is pointed out that different numerical value should be selected for different coal face according to different demand for reliability.