The upward filling method with tailings or waste rock were used in a certain gold mine, roof caving and wall caving occurred many times.
某金矿采用上向分层尾砂（废石）充填采矿方法回采，曾多次发生重大冒顶、片帮事故。The coal wall or roof of working face is perforated, and a hydraulic expansible anchor stock is inserted into the hole.
本发明涉及煤矿井下开采工艺，进一步讲是回采工作面防止片帮冒顶的一种方法。Prevention rib spalling mechanics of stepped cutting technology was analyzed by numerical simulation.
用数值模拟分析了台阶式割煤的防片帮机理。The surrounding rock of the upper face end is the key part strengthened the control of the rib spalling.
上端头的围岩片帮控制是应重点加强的关键部位；The II3123 face is a light type caving face of three-soft coal seam. the roof is cracked, sloughing and roof fall often occur.
石台煤矿II3123工作面为“三软”煤层轻放工作面，顶板破碎易掉，片帮、冒顶时常发生。The working section is easily to rib spalling and floor heaving affected by mining and floor soft rock.
回采巷道受采动和底板软岩的影响，易发生片帮和底鼓；Based on the occurring mechanism of slough rock burst, the mechanism to weaken shock with bolt support in coal roadway is analyzed.
从片帮型冲击矿压发生的机理出发，分析了煤层煤巷采用锚杆支护减冲的机理。The rock burst in mines is local instability during excavation, which is related to layer crack plate construction.
片帮型冲击矿压是煤壁局部失稳，与煤壁层裂板结构的形成有关。Research and application of whisht press affusion technology for preventing coal wall collapse in picking laneway
煤层静压注水技术在三软煤层掘进巷道防止片帮、冒顶的研究与应用