近水平煤层开采的裂隙发育规律研究  

Crack Development Law of Near-level Coal Seam Mining

作　　者：刘旺海 于佑任 雷卫峰 LIU Wanghai;YU Youren;LEI Weifeng(Shaanxi Xiaobaodang Mining Co.,Ltd.,Yulin 719000,Shaanxi,China;Tongfa Dongzhouyao Coal Industry Co.,Ltd.,Jinneng Holding Coal Industry Group,Datong 037100,Shanxi,China)

机构地区：[1]陕西小保当矿业有限公司,陕西榆林719000 [2]晋能控股煤业集团同发东周窑煤业有限公司,山西大同037100

出　　处：《能源与节能》2023年第2期120-122,共3页Energy and Energy Conservation

摘　　要：采用离散元数值模拟实验方法,对陕西省铜川市一典型近水平煤层开采的裂隙发育规律进行研究。结果表明:裂隙带发育高度受工作面长度与煤层埋深两个因素的影响作用明显,同一近水平煤层的工作面越宽,裂隙发育越高;埋深达到600m以上,裂隙发育高度明显大于以往的理论经验计算结果,且3-2煤层工作面较宽的2302工作面采后裂隙发育高度明显大于位于煤层上部区域的2301工作面。这充分说明,同一近水平煤层的工作面宽度越宽,采后裂隙发育越高。希望所述内容能够为研究相似的近水平煤层工作面开采下的裂隙发育问题提供借鉴。This paper used the discrete element numerical simulation experiment method to study the crack development law of a typical near-level coal seam in Tongchuan City of Shaanxi.The results show that the development height of the crack zone is affected by the length of the working face and the depth of the coal seam.The two factors have obvious effects.The wider the working face of the same near-level coal seam,the higher the crack development;the buried depth is more than 600 m,the height of the crack development is obviously greater than the previous theoretical and empirical calculation results,and in the 3-2coal seam,the post-mining fissure development height of 2302 working face which is wider is obviously larger than 2301 working face located in the upper part of the coal seam.The results fully indicate that the wider the working face width of the same nearlevel coal seam,the higher the post-mining fissure development.The research is expected to provide reference for the development of cracks under similar mining in near-level coal seams.

关 键 词：近水平煤层 数值模拟 裂隙发育 

分 类 号：TD325.4[矿业工程—矿井建设]