朔南矿区特厚煤层超长综放工作面矿压显现规律研究
Study on Strata Behavior Law of Fully Mechanized Caving Face in Super-long and Thick Coal Seam in Southern Shuozhou Mining Area
-
摘要: 特厚煤层超长工作面综放开采引起的矿压显现规律与传统的岩层移动特征有明显的差异。为研究超长工作面矿压显现规律,以麻家梁矿14201首采工作面为工程背景,采用固支梁和悬臂梁理论、3DEC数值模拟以及现场观测的方法对顶板的破断失稳特征开展研究。结果表明:理论计算基本顶的初次来压步距为62.5 m,周期来压步距为25.54 m;数值模拟初次来压步距约为60~70 m,周期来压步距约为25 m,与理论计算结果基本一致;同时根据现场监测液压支架工作阻力数据,进一步验证了研究结果。Abstract: The law of strata behavior caused by fully mechanized caving mining face of super-long and thick coal seam is obviously different from that of traditional strata movement. In order to study the law of strata behavior in super-long working face, taking the first mining face of 14201 in Majialiang Mine as the engineering background, using the theory of fixed beam and cantilever beam, 3DEC numerical simulation and field observation, the characteristics of breaking and instability of roof are studied. The results show that the theoretical calculation of the first weighting interval of the main roof is 62.5 m, the periodic weighting interval is 25.54 m. The numerical simulation shows that the first weighting interval is about 60 m to 70 m and the periodic weighting interval is about 25 m, which is basically consistent with the theoretical calculation results. At the same time, according to the field monitoring data of hydraulic support working resistance, the research results are further verified.
-
-
[1] 王家臣.我国放顶煤开采的工程实践与理论进展[J]. 煤炭学报,2018,43(1):43-51. [2] 康利军.综采放顶煤开采技术分析[J].西部探矿工程,2018,30(10):113-114. [3] 王晓飞.厚煤层综采放顶煤开采工艺参数研究[J].煤炭工程,2018,50(9):56-58. [4] 陈峰,刘中胜,李书刚.综放工作面矿压显现规律的研究[J].山东煤炭科技,2010(3):190-191. [5] 刘正和,赵阳升,弓培林,等.大采高放顶煤工作面矿压显现规律及围岩控制研究[J].太原理工大学学报,2011,42(5):524-527. [6] 孟海东,田睿,高扬.阳湾沟煤矿综放采场矿压显现规律数值模拟分析[J].煤炭技术,2017(10):6-7. [7] 刘全明,于雷.浅埋深综放采场覆岩结构对矿压显现规律的影响[J].煤炭科学技术,2017,45(3):20-25. [8] 张连勇,纵智,王连国.超长综放工作面矿压显现规律[J].山东科技大学学报(自然科学版),2002,21(3):114-117. [9] 王哲.超长工作面综放开采矿压显现规律研究[J].煤矿安全,2017,48(2):188-191. [10] 马钱钱,周厚权,袁德权,等.大采高超长综放面矿压显现规律与控制技术研究[J].能源技术与管理,2015,40(4):48-50. [11] 钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2010. [12] 钱鸣高,缪协兴,许家林.岩层控制中的关键层理论研究[J].煤炭学报,1996(3):225-230. [13] 闫少宏.综放开采矿压显现规律与支架-围岩关系新认识[J].煤炭科学技术,2013,41(9):96-99. [14] 万峰,张洪清,韩振国.液压支架初撑力与工作面矿压显现关系研究[J].煤炭科学技术,2011,39(6):18-20. [15] 王祥麟,赵宏珠.液压支架与单体支柱工作面矿压显现异同的浅析[J].煤炭科学技术,1981(1):10-15.
计量
- 文章访问数: 93
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
