摘要
鉴于冲击地压对深部厚煤层工作面安全高效生产具有严重的影响性,采用RFPA2D数值模拟软件研究综放工作面采场周围支承压力的分布规律,分析综放开采对于有冲击危险性厚煤层的动压控制机理。研究表明,对于具有冲击危险性的厚煤层采用综放开采是有利于冲击地压防治的[1],在采用放顶煤开采方法时形成的"高位结构"改变了支承压力在煤层上的分布形态,支承压力的范围明显扩大,从而达到对采场周围动压显现的控制目的。
In view of the percussive ground pressure has seriously affected deep thick coal seam face secure and efficient production,using RFPA2D numerical simulation software make research on the abutment pressure distribution around the stope when the fully mechanized sublevel caving mining method adopted in mining face.Analyze the dynamic pressure control mechanism of full-mechanized caving mining method applied to thick coal seam with risk of rock burst.Studies have shown that for specially thick coal seam with danger of burst using fully-mechanized sublevel caving mining method is conducive to control percussive ground pressure,in which the top coal caving mining methods used are formed a ＂high structure＂ changed the distribution of abutment pressure in coal seam,the distribution range of abutment pressure significantly increased,so as to achieve the purpose on controlling the dynamic pressure around the stope.
出处
《煤》
2011年第8期7-9,20,共4页
Coal
基金
国家自然科学基金资助项目(51074101)
关键词
冲击危险性
厚煤层
综放开采
动压控制
RFPA数值模拟
rock bursting risks
thick coal seam
fully-mechanized sublevel caving mining
dynamic pressure control
RFPA numerical simulation
