条带工作面开采沉陷的影响因素分析
Influence Factors Analysis of Mining Subsidence in Strip Working Face
-
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。Abstract: 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.
-
Keywords:
- strip mining /
- orthogonal experiment /
- multiple regression /
- mining subsidence /
- coal body intensity
-
-
[1] 杜计平,汪理全.煤矿特殊开采方法[M].徐州:中国矿业大学出版社,2003. [2] 赵富,安伯超,赵琦.建筑物下压煤开采方案技术经济评价模型研究[J].煤炭科学技术,2012(11):24-27. [3] 孙万明,刘鹏亮,崔锋,等.高水材料条带充填开采地表沉陷主控因素分析[J].煤炭科学技术,2013(12):11-14. [4] 蔡美峰.岩石力学与工程[M].北京:科学出版社,2002:68-71. [5] 郭惟嘉,王海龙,刘增平.深井宽条带开采煤柱稳定性及地表移动特征研究[J].采矿与安全工程学报,2015,32(3):369-375. [6] 冯锐敏,李鑫磊,符辉.村庄下压煤条带开采技术[J]. 煤矿安全,2012(11):85-87. [7] 张华,孙中光,李少刚,等.综采工作面软岩煤巷围岩变形原理及控制技术[J].煤矿安全,2015(3):234. [8] 代进洲,翟英达,孟涛.条带开采工作面煤柱合理宽度的确定[J].煤炭科学技术,2014(2):27-29. [9] 彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2007:1-3. [10] 任建喜,李晓飞,李龙,等.40110综放工作面运顺支护优化方案FLAC模拟[J].煤矿安全,2013(9):221-224. [11] 付玉凯,鞠文君.影响软岩巷道变形因素的正交数值模拟试验研究[J].采矿与安全工程学报,2013(6):812-816. [12] 黄震,朱术云,姜振泉,等.基于正交设计的覆岩移动影响因素敏感性分析[J].地下空间与工程学报,2013(1):106-112.
计量
- 文章访问数: 294
- HTML全文浏览量: 0
- PDF下载量: 0