摘要
针对华亭砚北煤矿2502采区250203上工作面掘进期间大能量事件频繁发生,提出以围岩的强弱强结构控制机理为基础,从能量的角度分析了防治巷道型冲击的方法。本文通过FlAC3D有限元软件对250203上材料巷建模,研究了锚杆、锚索各参数不同时对巷道围岩变形控制的影响,确定了较好的支护参数。提出一种加强支护保护区小结构强度的锚杆支护方案,为该矿厚煤层掘巷期间防止巷道型冲击提供了一些思路。
According to high energy accidents frequent occurred during the driving period of No. 250203 upper coal mining face in No. 2502 mining block of Huating Yanbei Mine, base on the control mechanism of the strong - weak - strong strength structure in the surrounding rock, from the view of the energy, the paper analyzed the method to prevent the mine strata pressure humping occurred in the gateway. The F1AC3~ finite element software was applied to the modeling of the upper material gateway in No. 250203 upper coal mining face. The paper studied the different parameters of the bolt and anchor affected to the deformation control of the gateway surrounding rock and determined the good support parameters. A bolt support plan to improve the small structure strength of the support protected zone was provided and could provide some ideas to prevent the gateway bumping during the gateway driving period in the thick seam of the mine.
出处
《煤炭工程》
北大核心
2013年第4期80-83,共4页
Coal Engineering
基金
国家重点基础研究发展规划(973)资助项目(2010CB226805)
国家自然科学基金资助项目(51104150)
国家科技支撑计划(2012BAK09B01)
关键词
冲击矿压
强弱强结构
FLAC3D
支护参数设计
mine strata pressure bumping
strong - weak - strong strength structure
FLAC3D
design of support parameters
