摘要
基于响应面法试验设计及数据分析,利用有限差分软件UDEC模拟了不同充填体刚度、顶煤刚度、支架刚度、充填体强度下膏体充填工作面顶板下沉规律,分析了单因素及多因素交互作用下对膏体充填工作面顶板稳定性的影响及其原因。研究结果表明,膏体充填工作面顶板覆岩运动受单因素的影响程度大小依次为:顶煤刚度>充填体刚度>充填体强度>支架刚度;通过调节人为因素(充填体强度、充填体刚度、支架刚度)可以有效减少自然因素(顶煤刚度)对膏体充填工作面顶板下沉量的影响。研究得到了顶板下沉量与各因素之间的二次多项回归方程,可为控制特定开采地质条件下膏体充填工作面顶板下沉、选择合适充填体刚度与支架刚度提供一定的参考。
Based on the experimental design and data analysis of response surface method,the roof subsidence law of paste filling face under different filling body stiffness,top coal stiffness,support stiffness and filling body strength was first simulated by using the finite difference software UDEC.Then,the influence of single factor and multi-factor interaction on the roof stability of paste filling face and its causes were analyzed.The results show that the influence degree of the single factor on the roof overburden movement of paste filling face is as follows:Top coal stiffness>filling stiffness>filling strength>support stiffness.The influence of natural factors(top coal stiffness)on the roof subsidence of paste filling face can be effectively reduced by adjusting human factors(filling strength,filling stiffness and support stiffness).Besides,the quadratic multiple regression equation between the roof subsidence and various factors was obtained,providing a reference for the control of the roof subsidence of paste filling face under specific mining geological conditions and the selection of appropriate filler stiffness and support stiffness.
作者
孙国庆
宁建国
杜明浩
闫汝瑜
张智
SUN Guoqing;NING Jianguo;DU Minghao;YAN Ruyu;ZHANG Zhi(College of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2022年第5期51-59,共9页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(52074170)。
关键词
响应面法
多因素分析
膏体充填
顶板下沉
response surface method
multivariate analysis
paste filling
roof subsidence
作者简介
孙国庆(1997-),男,河北邢台人,硕士研究生,主要从事矿山压力与岩层控制研究;通信作者:宁建国(1975-),男,山东宁阳人,教授,博士,主要从事矿井冲击地压监测与防治研究,E-mail:njglxh@126.com。
