TY -的A2温Zhijie盟——你,分盟——但是,Qingwei AU - Fu Baojie AU -王,Yu PY - 2020 DA - 2020/09/08 TI -机械开采应力分析孤岛脸上转移在特厚完全机械化综放开采SP - 8834321六世- 2020 AB -孤岛的挖掘空间结构在特厚综采综放开采是独一无二的,从而导致一个复杂开采应力分布和严重的安全隐患。在这项研究中,结合一个具体的工程实例,矿业孤岛面应力分布特点进行了阐述,以及轴承的结构力学模型建立了上覆地层连续梁应用弹塑性力学理论。采矿机械方程的应力分布和失败然后煤岩质量获得的深度。比较理论与数值模拟计算结果和现场测量结果显示基本上一致的应力分布特点。派生的力学方程可以提供一个估计方法分析孤岛脸上开采动态的加厚全机械化的综放开采。以下的结论。煤岩的质量不仅要承受横向挖掘叠加影响也提前挖掘影响煤壁、前孤岛的脸是在复杂的环境中多个矿山压力叠加。在采矿过程中,最大的推进矿业应力集中系数是4.0 - -6.0,位于孤岛的上下两端的脸。煤壁的外侧采矿失败深度的孤岛面增加2.0 - -5.0 m的影响下推进矿业。因此,相比之下,nonisolated岛的脸,矿山压力的外观非常激烈。 The mining influence in the range of 20–30 m of the upper and lower ends is intense, and the mining stress in this area is characterized by “cone distribution.” This zone is an important hidden danger area with coal–rock mass mining instability on isolated island face, which requires special attention to avoid mining disasters. According to the analysis of the influencing mining factors and laws of isolated island face, it is concluded that the longer the isolated island face size is, the closer the goaf size on both sides of the isolated island face is, the smaller the coal seam buried depth is, the better the mechanical conditions of coal and rock medium are, and the smaller the mining height of coal seam is, the more favorable the safe mining of isolated island face is. SN - 1468-8115 UR - https://doi.org/10.1155/2020/8834321 DO - 10.1155/2020/8834321 JF - Geofluids PB - Hindawi KW - ER -