摘要
基于正交试验方法,系统分析了在煤层埋深和采高一定的情况下,条带工作面采宽、留宽和煤体强度对采场沉陷的综合影响,并采用MATLAB软件得出了采场沉陷与各个因素之间的多元回归公式。研究表明:条带采场沉陷与3个因素都显著相关,其影响效果排列顺序为条带采宽>煤体强度>留宽;在煤体强度1.1 MPa,采宽75 m以及留宽85 m的情况下,可控制地表沉陷盆地为均匀平缓的平底盆地,最利于地表建筑物的保护。
Based on orthogonal test method,we systematically analyzed the combined effect of mining width,remained width and coal body intensity on the mining subsidence,and the multiple regression formula of the mining subsidence and the factors were obtained by using MATLAB software.The results show that the strip mining subsidence and three factors are significantly related,the order of the effect is that the strip mining width 〉coal body strength〉 remained width.And in the case of coal body strength of 1.1 MPa,width of 75 m and remained width of 85 m,the surface subsidence basin can be controlled to become a flat bottom basin,the most conducive to the protection of surface buildings.
出处
《煤矿安全》
CAS
北大核心
2016年第8期222-225,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51274145)
重庆大学煤矿灾害动力学与控制国家重点实验室访问学者基金资助项目
关键词
条带开采
正交试验
多元回归
开采沉陷
煤体强度
strip mining
orthogonal experiment
multiple regression
mining subsidence
coal body intensity
