摘要
以大远煤业有限公司杜家村煤矿2号开采煤层1201回采平巷的工程条件为背景,分析了大倾角松软厚煤层在不同断面形状和支护方式下稳定性问题。采用工程类比法及FLAC3D数值分析软件,对三种方案在不同的巷道断面、支护方式下,巷道围岩的位移变形情况、应力分布情况等进行了模拟分析比较,研究结果表明,在同样采用锚网索+钢带的联合支护形式下,直墙圆拱形巷道形状的垂直和水平变形量比其他两个方案分别低78%和23%,且应力分布较均匀,更加适合大倾角松软煤层巷道的开挖支护。论文研究结果可为工程设计和实际应用提供依据。
Against the background of 1201 return airway of Dujiacun coal seam mining 2#Coal,the large dip angle Soft coal seam roadway that in different section shape and supporting mode stability problem is analyzed.By using the Engineering analogy method,and FLAC3Dnumerical simulation software,the three cross-section shape and supporting scheme is simulated.The results show that,under the joint form of mesh-anchor＋steel supporting,the vertical wall round arched roadway vertical and horizontal deforma-tion smaller than the other two programs were 78% and 23%.the stress distribution more uniform and more suitable for excavation and support in the large inclination soft coal seam roadway,and provides a theoretical basis for practical application.
出处
《中国矿业》
北大核心
2010年第9期73-77,共5页
China Mining Magazine
