补连塔矿12511综采工作面矿压显现规律
Mine Strata Pressure Behavior Law of 12511 Fully-mechanized Coal Mining Face in Bulianta Coal Mine
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摘要: 为研究近浅埋煤层特大采高工作面矿压显现规律,以补连塔12511综采工作面为研究对象,通过工作面矿压实测数据,分析了近浅埋煤层7.4 m特大采高工作面矿压显现规律。结果表明,工作面初次来压步距44 m,回采初期周期来压步距11.74 m,回采中期周期来压步距增大至14.1 m,工作面周期来压对支架作用强度整体显示出强、弱交替变化规律,周期来压强度呈现“两端小,中间大”的特征。工作面周期来压动载系数为1.39。支架工作阻力呈正态分布,呈现较好工作状态。Abstract: To study the behavior law of ground pressure in the extremely high mining face of near shallow buried seam, the 12511 fully mechanized mining face of Bulianta Mine was taken as the research object, through the measured data of the rock pressure of the working face, the law of strata behavior in 7.4 m super large mining height working face is analyzed. The results show that the distance of first weighting is 44 m, cyclic pressure distance during initial stage of mining is 11.74 m, and the interval of mid-mining cycle increases to 14.1 m, and the working face periodic weighting has a strong and weak alternation law on the support strength. Periodic compressive strength presents the characteristics of “small ends, large middle”. The dynamic load coefficient of periodic weighting of working face is 1.39. The working resistance of the support is normal distribution, showing a good working state.
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[1] 国家能源局.国务院办公厅关于印发能源发展战略行动计划(2014-2020年)的通知 [EB/OL].[2018-08-29].http://www.nea.gov.cn/2014-12/03/c_133830458.htm. [2] 孙亚军,张梦飞,高尚,等.典型高强度开采矿区保水采煤关键技术与实践[J].煤炭学报,2017,42(1):56. [3] 宋元喜,鹿文勇.均压技术治理神东矿区低氧问题的效果分析[J].煤矿安全,2018,49(S1):88-91. [4] 王刚,罗海珠,王继仁,等.近浅埋大采高工作面关键层破断规律研究[J].中国矿业大学学报,2016,45(3):469-474. [5] 屠世浩,袁永.厚煤层大采高综采理论与实践[M].徐州:中国矿业大学出版社,2012:31-47. [6] 鞠金峰,许家林,朱卫兵,等.神东矿区近距离煤层出一侧采空煤柱压架机制[J].岩石力学与工程学报,2013,32(7):1321-1330. [7] 曹志国,李全生,董斌琦.神东矿区煤炭开采水资源保护利用技术与应用[J].煤炭工程,2014,46(10):162. [8] 申路路,王伸,张群磊,等.巨厚基本顶大采高工作面顶板破断特征[J].煤矿安全,2018,49(3):205-208. [9] 邸帅,王继仁,李冬辉,等.山丘地形对浅埋7.0m采高综采面矿压显现的影响[J].中国安全科学学报,2018,28(2):164-169. [10] 杨俊哲.7.0 m大采高工作面覆岩破断及矿压显现规律研究[J].煤炭科学技术,2017,45(8):1-7. [11] 侯志成.7 m大采高“刀把”形综采工作面矿压规律研究[J].煤矿安全,2017,48(S1):1-4. [12] 黄庆享.浅埋煤层的矿压特征与浅埋煤层定义[J].岩石力学与工程学报,2002,21(8):1174-1177. [13] 黄庆享,钱鸣高,石平五.浅埋煤层顶板周期来压结构分析[J].煤炭学报,1999,24(6):581-585. [14] 黄庆享.浅埋煤层长壁开采顶板结构及岩层控制研究[M].徐州:中国矿业大学出版社,2000:143-147. [15] 曹召奇.大采高工作面矿压规律分析及支架选型研究[J].煤炭科学技术,2013,41(10):13-16.
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