摘要
基于老顶-直接顶协调变形机理建立力学分析模型,求解得出老顶周期来压步距关于围岩赋存条件、直接顶参数、老顶参数、工程相关参数等4类12种参数之间的函数关系式。对上述函数关系式进行因素分析。结果显示周期来压随着直接顶重度的增大而减小,而随其他直接顶参数增大而增大,并且分析得出周期来压步距的主要影响因素包括直接顶弹性模量、直接顶厚度,在进行矿压控制时应对上述主要因素给予充分考虑。
Established the mechanical analysis model basing on the immediate roof-main roof compatible deformation,and then obtained the periodic weighting length function relation of twelve？parameters which divided into four kinds including the surrounding rock parameters, immediate roof, main roof parameters and engineering parameters. The results show that periodic weighting length will increase if the immediate roof increasing, while decrease when other parameters of immediate roof increase. At the same time,the main influence factors include the immediate roof elastic modulus and thickness of the immediate roof. Therefore,should give full consideration to the factors mentioned above in ground pressure controlling.
出处
《煤炭技术》
北大核心
2017年第7期4-6,共3页
Coal Technology
基金
国家自然科学基金(51508462)
关键词
直接顶
周期来压步距
老顶
力学分析
immediate roof
periodic weighting length
main roof
mechanical analysis
