Numerical study of rock bolting parameter variation effect on stability of stratified, composite roof structure of drift in a coal mine

• 来源期刊: 煤炭学报（英文版）
• 年，卷（期）: 2005,（1）
• 页码范围: 17-22
• 页数: 6页
• 语种: 英文

摘要

Described the outcomes of a comprehensive numerical modeling on the rock bolting performance for preventing the deformation of stratified, composite roof structure of drift in a coal mine. The investigation was undertaken in the adverse geological conditions, with variation of belt parameters, including length, density, distribution, pretension,as well as the geometry of opening, so as to determine the effect of bolting parameter variation on roof deformation and stability. The outcomes clearly demonstrated that a significant improvement of roof stability can be achieved associating with bolting parameters optimization, and indicated the importance of flexible geotechnical designation of rock mbolting reinforcement in mining practice.