特厚煤层大巷煤柱支承压力分布规律研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
针对特厚煤层综放工作面一次采出煤层厚度大,支承压力影响范围明显增加的问题,在保证煤层大巷长期稳定的前提下确定合理停采煤柱(大巷保护煤柱)宽度,以塔山煤矿8106特厚煤层综放工作面为研究对象,对8106综放工作面设计终采线与大巷之间的煤柱应力进行了连续监测,得到较完整的煤体应力随工作面推进距离及时间的变化曲线。结果表明:特厚煤层综放工作面支承压力在工作面经采后仍将缓慢变化,并在大约70 d趋于稳定;工作面超前支承压力明显影响范围为70~80 m,一般影响范围小于110 m。
According to one pass mining with high thick seam in the fully-mechanized top coal caving mining face in ultra thick seam,the support pressure influence scope obvious increased problem,on the premise to ensure a long term stability of the seam gateway,a rational terminal mining coal pillar( protective coal pillar of the seam gateway) width was determined. Based on No. 8106 fully-mechanized top coal caving mining face in the ultra thick seam of Tashan Mine as a study object,a continued monitoring and measuring was conducted on the coal pillar stress between the designed mining terminal line and the gateway of No. 8106 fully-mechanized top coal caving mining face. A completed variation curve of the coal stress with the forward advancing distance and time was obtained. The results showed that after the mining operation of the coal mining face stopped,the support pressure of the fully-mechanized top coal caving mining face in the ultra thick seam would still be varied slowly and would be in stabilization after 70 days. The advance support pressure influence scope of the coal mining face was about 70 ~ 80 m and a general influence scope would be less than 110 m.
引文
[1]井欢庆,高明中,杨德传,等.软岩大巷合理保护煤柱留设宽度的探讨[J].煤炭工程,2011(4):10-12.
    [2]彭文庆,王卫军.浅埋厚煤层分层开采保护煤柱合理宽度研究[J].煤炭科学技术,2008,36(11):14-16.
    [3]殷伟,昝东峰,聂守江.联合布置采区集中下山保护煤柱留设尺寸研究[J].中国煤炭,2012,38(1):45-48.
    [4]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003.
    [5]兰奕文.特厚煤层综放工作面区段煤柱合理宽度研究[J].煤炭科学技术,2014,42(12):12-15.
    [6]许永祥,李化敏,王开林,等.特厚煤层综放工作面侧向支承压力分布研究[J].煤炭科学技术,2014,42(11):26-28.
    [7]王金华.特厚硬煤层综采技术应用现状及发展趋势[J].煤炭科学技术,2014,42(1):1-4.
    [8]鲍永生.复杂特厚煤层综放工作面煤柱应力分布规律研究[J].煤炭科学技术,2014,42(3):21-24.
    [9]张海峰.浅埋深特厚煤层综放工作面矿压显现规律研究[J].煤炭科学技术,2014,42(S1):21-23.
    [10]高鸿宇,冯国瑞.特厚煤层大断面开切眼支护研究[J].煤炭科学技术,2014,42(S1):61-63.
    [11]别小飞,翟新献,张帅.千秋煤矿特厚煤层综放工作面矿压显现规律研究[J].煤炭科学技术,2013,41(S0):80-82.
    [12]王吉生,柴肇云,康天合,等.综放全厚开采20m特厚中硬煤层数值模拟研究[J].太原理工大学学报,2007,38(2):175-179.
    [13]康天合,柴肇云,李义宝等.底层大采高综放全厚开采20m特厚中硬煤层的物理模拟研究[J].岩石力学与工程学报,2007,26(5):1065-1072.
    [14]段王拴,高喜才,窦娟.坚硬特厚煤层综放工作面覆岩破坏运动规律[J].西安科技大学学报,2008,28(2):211-214.
    [15]刘锦荣.特厚煤层综放采场直接顶关键层及支架适应性[J].煤炭科学技术,2009,37(6):1-4.
    [16]王国法,庞义辉,刘俊峰.特厚煤层大采高综放开采机采高度的确定与影响[J].煤炭学报,2012,37(11):1777-1782.
    [17]伍永平,高喜才,解盘石,等.坚硬特厚煤层顶分层综采工作面支承压力分布特征研究[J].矿业安全与环保,2010,37(4):8-10.
    [18]成云海,姜福兴,庞继禄.特厚煤层综放开采采空区侧向矿压特征及应用[J].煤炭学报,2012,37(7):1088-1093.
    [19]孔令海,姜福兴,刘杰,等.特厚煤层综放工作面区段煤柱合理宽度的微地震监测[J].煤炭学报,2009,34(7):871-874.
    [20]司鑫炎,王文庆,邵文岗.沿空双巷合理煤柱宽度的数值模拟研究[J].采矿与安全工程学报,2012,29(2):215-219.
    [21]李安静.平朔井工三矿区段煤柱宽度优化研究[J].煤炭科学技术,2012,40(4):45-48.
    [22]韩承强,张开智,徐小兵,等.区段小煤柱破坏规律及合理尺寸研究[J].采矿与安全工程学报,2007,24(3):370-373.
    [23]康继忠,樊少武,吴宝杨.综放工作面区段煤柱合理宽度优化研究[J].煤炭科学技术,2012,40(10):37-40.
    [24]陈绍杰,郭惟嘉,程国强,等.深部条带煤柱蠕变支撑效应研究[J].采矿与安全工程学报,2012,29(1):48-53.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心