摘要
采用试验和数值模拟相结合的方法 ,研究网格状锚固支护顶板的锚固机理与作用。结果表明 ,锚杆与岩石复合可提高顶板的韧性和抗疲劳强度 ,锚杆对顶板的离层和垮落起到了有效控制的作用。“网格状”支护结构可将顶板由“紧跟冒落型”转化为“滞后冒落型” ,保证作业安全 ,取得显著经济效益和社会效益 。
The mechanics and effects of roof bolting are investigated by experiments and numerical simulation The results show that the toughness and anti fatigue strength of reinforced roof are enhanced obviously,and the displacement and collapse of roof are controlled effectively, and the roof falling can be changed from following on the heel of the working face to lagging behind the working face by grid bolt set reinforcement The economical and social profits are achieved by safe operation, and the technique of roof reinforcement by grid bolt set can be applied widely
出处
《有色金属》
CSCD
2002年第3期103-106,共4页
Nonferrous Metals
基金
国家自然科学基金资助项目 (5 980 40 0 5 )
山东省自然科学基金资助项目 (Y2 0 0 0F0 6)
关键词
网格状锚固顶板支护
韧性
抗疲劳强度
无人工作面
grid
bolt reinforcement
toughness
anti fatigued strength
nobody working face
