Study on Fragmentation Mechanism of Top Coal in Caving Coal Face

摘要：

Combing with the practice of caving coal in China, the fragmenting and moving laws of lop coal and the moving laws of overlying strata at stope were studied in the paper. It was referred that the main factors influencing the fragmentation and caving effect of lop coal includes mining depth, coal seam strength, the supporting strength and the coal seam thickness etc. At the same time, the breaking of top coal was the interact result of top coal and overlying strata and the supports had only the auxiliary function to break the coal, and the concept of fragment zoning was put forward.

关键词： caving coal fragmentation mechanism of lop coal overlying strata breaking of lop coal

作者: LIU Xinhe LI Xinwang TIAN Lingtao CHEN Long CUI Shilei

作者单位: School of Resource,Hebei University of Engineering,Handan 056038,Hebei,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1646-1648

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）