浅埋近距离一侧采空煤柱下切眼位置对推出煤柱压架灾害的影响规律

doi:10.13722/j.cnki.jrme.2014.10.008

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Abstract The crushing of supporting structures frequently occurs in the mining out coal pillar at the side of the upper goaf and in close distance to the working front of the shallow seams. The influence of the positions of hole-cut beneath the coal pillar was studied based on the mining practices at 4 working faces in Shigetai coal mine，Shendong mine area，China. A method of determining the cut-hole position was proposed to avoid the support crushing. As the positions of cut-hole are getting farther away from the edge of the coal pillar，the mode of the key stratum(KS) above the coal pillar varies in pushing out the coal pillar. The key stratum is stable initially，then starts to break like the cantilever. The periodic breaking occurred after the initial breaking leads to finally the occurrence of support crushing. Besides，if there is a KS in seams in close distance，this KS will affect the mode of breaking of the KS above the coal pillar. Total of 7 types in two categories of cut-hole positions were derived. The positions of cut-hole were proposed to ensure that the KS above the coal pillar would not break or its breakage would not cause the failure of supports.

Key words： mining engineering shallow seam close distance seams goaf-side coal pillar support crushing cut-hole position key stratum(KS)

Received: 07 October 2013

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.10.008 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I10/2018

[1] 鞠金峰. 浅埋近距离煤层出煤柱开采压架机理及防治研究[博士学位论文][D]. 徐州：中国矿业大学，2013.(JU Jinfeng. Mechanisms and prevention of support crushing disaster while mining out of the upper coal pillar in close distance shallow seams[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2013.(in Chinese)) [2] 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)：1 321–1 330. (JU Jinfeng，XU Jialin，ZHU Weibing，et al. Mechanism of support crushing while mining out of upper goaf-side coal pillar in close distance seams of Shendong mining area[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(7)：1 321–1 330.(in Chinese)) [3] 刘海波. 综采工作面回撤通道矿压异常及应对措施[J]. 煤炭与化工，2013，36(3)：84–85.(LIU Haibo. Abnormal mining pressure in fully mechanized working face retreat channel solution[J]. Coal and Chemical Industry，2013，36(3)：84–85.(in Chinese)) [4] 许家林，钱鸣高. 覆岩关键层位置的判别方法[J]. 中国矿业大学学报，2000，29(5)：463–467.(XU Jialin，QIAN Minggao. Method to distinguish key strata in overburden[J]. Journal of China University of Mining and Technology，2000，29(5)：463–467.(in Chinese)) [5] 钱鸣高，缪协兴，许家林，等. 岩层控制的关键层理论[M]. 徐州：中国矿业大学出版社，2003：10–42.(QIAN Minggao，MIAO Xiexing，XU Jialin，et al. Study of key strata theory in ground control[M]. Xuzhou：China University of Mining and Technology Press，2003：10–42.(in Chinese)) [6] 许家林，朱卫兵，王晓振，等. 浅埋煤层覆岩关键层结构分类[J]. 煤炭学报，2009，34(7)：865–870.(XU Jialin，ZHU Weibing，WANG Xiaozhen，et al. Classification of key strata structure of overlying strata in shallow coal seam[J]. Journal of China Coal Society，2009，34(7)：865–870.(in Chinese)) [7] 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，2010：84–90.(QIAN Minggao，SHI Pingwu，XU Jialin. Ground pressure and strata control[M]. Xuzhou：China University of Mining and Technology Press，2010：84–90.(in Chinese)) [8] 钱鸣高，缪协兴，何富连. 采场“砌体梁”结构的关键块分析[J]. 煤炭学报，1994，19(6)：557–563.(QIAN Minggao，MIAO Xiexing，HE Fulian. Analysis of key block in the structure of voussoir beam in long wall mining[J]. Journal of China Coal Society，1994，19(6)：557–563.(in Chinese)) [9] 鞠金峰，许家林，朱卫兵，等. 近距离煤层工作面出倾向煤柱动载矿压机理研究[J]. 煤炭学报，2010，35(1)：15–20.(JU Jinfeng，XU Jialin，ZHU Weibing，et al. Mechanism of strong strata behaviors during the working face out of the upper dip coal pillar in contiguous seams[J]. Journal of China Coal Society，2010，35(1)：15–20.(in Chinese)) [10] 鞠金峰，许家林，朱卫兵，等. 大柳塔煤矿22103综采面压架机理及防治技术[J]. 煤炭科学技术，2012，40(2)：4–7.(JU Jinfeng，XU Jialin，ZHU Weibing，et al. Hydraulic powered support jammed mechanism and prevention technology of fully mechanized coal mining face 22103 in Daliuta mine[J]. Coal Science and Technology，2012，40(2)：4–7.(in Chinese)) [11] 鞠金峰，许家林，朱卫兵，等. 近距离煤层采场过上覆T形煤柱矿压显现规律[J]. 煤炭科学技术，2010，38(10)：5–8.(JU Jinfeng，XU Jialin，ZHU Weibing，et al. Strata behavior law of coal mining face with short distance to above seam passing through upper seam T crossing coal pillar[J]. Coal Science and Technology，2010，38(10)：5–8.(in Chinese)) [12] 鞠金峰，许家林. 倾向煤柱边界超前失稳对工作面出煤柱动载矿压的影响[J]. 煤炭学报，2012，37(7)：1 080–1 087.(JU Jinfeng，XU Jialin. Influence of leading instability in the upper dip coal pillar boundary to the strong strata behaviors while mining out of the pillar[J]. Journal of China Coal Society，2012，37(7)：1 080–1 087. (in Chinese)) [13] 陈苏社. 大柳塔煤矿5-2煤7.0 m支架综采面矿压规律研究[硕士学位论文][D]. 徐州：中国矿业大学，2012.(CHEN Sushe. Strata behavior regularity in fully mechanized face with 7.0 m height support in 5-2 coal seam of Daliuta coal mine[M. S. Thesis][D]. Xuzhou：China University of Mining and Technology，2012.(in Chinese)) [14] 李鸿昌，钱鸣高. 孔庄矿上行开采的研究[J]. 中国矿业学院学报，1982，(2)：12–24.(LI Hongchang，QIAN Minggao. A study of ascending mining method at Kongzhuang mine[J]. Journal of China University of Mining and Technology，1982，(2)：12–24.(in Chinese)) [15] 李鸿昌. 矿山压力的相似模拟试验[M]. 徐州：中国矿业大学出版社，1988：93–95.(LI Hongchang. Similar simulation experiment in ground pressure[M]. Xuzhou：China University of Mining and Technology Press，1988：93–95.(in Chinese))