摘要
煤顶巷道采用树脂卷锚固高强度锚索补强支护效果良好，但在放顶煤开采时，巷道顶板在回采阶段不能及时垮落，造成回采工作面顶板管理和通风障碍。针对这一难题，文章介绍了两种锚索退锚工艺以及用退锚法放顶的实际效果。
AbstractResin anchored high strength cable bolts has proved to be an effective mean of
secondary reinforcement for roadways with thick top coal. However, during longwall retreating,
hanging roof often occurs in rear of the two ends of longwall face, which may cause problem to
ventilation system and roof control. This paper presents two kinds of technique to unload the cable
bolts, with actual results in field trail being introduced.
出处
《煤矿开采》
1999年第2期34-35,52,共3页
Coal Mining Technology
