Research on the optimal position of roadways in fully mechanized caving faces in mine-out areas of close distance coal seams

ZHANG Wei; ZHANG Guojun; SHI Yongguang; ZHEN Weijie; WANG Yuliang; LI Yihang; LI Yang

doi:10.13272/j.issn.1671-251x.2024070074

Volume 50 Issue 9

Aug. 2024

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Journal of Mine Automation > 2024 > 50(9): 90-97. > DOI: 10.13272/j.issn.1671-251x.2024070074

ZHANG Wei, ZHANG Guojun, SHI Yongguang, et al. Research on the optimal position of roadways in fully mechanized caving faces in mine-out areas of close distance coal seams[J]. Journal of Mine Automation，2024，50（9）：90-97. DOI: 10.13272/j.issn.1671-251x.2024070074

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Research on the optimal position of roadways in fully mechanized caving faces in mine-out areas of close distance coal seams

1.
Inner Mongolia Pingzhuang Coal Industry ( Group ) Co., Ltd., Chifeng 024000, China
2.
School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China

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Received Date: July 20, 2024
Revised Date: August 31, 2024
Available Online: August 15, 2024

Abstract

Abstract

Fully mechanized caving faces in close-distance coal seams involve extensive extraction spaces and high mining intensity. The extraction of roadways in lower coal seams is affected by stress concentration and support challenges resulting from the mining of upper seams. Hence, determining the optimal roadway position is crucial for effective support control in these settings. This study focused on the No. 2 coal seam and the No. 1-1 sub-seam at Xilutian Coal Mine. It evaluated both the stress reduction zone in the floor caused by upper seam extraction and the limit equilibrium zone during lower seam extraction, concluding that the optimal roadway position should be more than 22.79 meters away from the solid coal pillar. Theoretical calculations were used to analyze the stress distribution pattern in the floor following upper seam extraction, as well as the deformation and failure characteristics of the surrounding rock at various internal offsets. The results revealed: ① A pronounced difference between maximum and minimum stresses occurred closer to the floor of the mine-out area. ② With increasing internal offset, the surrounding rock stress and stress concentration coefficient initially decreased sharply, then increased slowly, and eventually stabilized, with relatively low values observed within the 20-25 meters internal offset range. ③ The plastic zone of the surrounding rock decreased and then increased, with minimal damage to the roadway rock observed at internal offsets of 20 and 25 meters. ④ Roadway deformation decreased as the internal offset increased, and surrounding rock displacement stabilized when the internal offset reached 25 meters. ⑤ The optimal internal offset for the roadway was determined to be 20-25 meters. Engineering applications confirmed that a 24-meter internal offset maintained both rock looseness and deformation within controllable limits, further validating this internal offset.
- close distance coal seam,
- fully mechanized caving face,
- roadway layout,
- surrounding rock damage,
- internal offset,
- floor stress

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References

[1]	康红普,徐刚,王彪谋,等. 我国煤炭开采与岩层控制技术发展40 a及展望[J]. 采矿与岩层控制工程学报,2019,1(2):7-39. KANG Hongpu,XU Gang,WANG Biaomou,et al. Forty years development and prospects of underground coal mining and strata control technologies in China[J]. Journal of Mining and Strata Control Engineering,2019,1(2):7-39.
[2]	赵洪宝,刘一洪,李金雨,等. 孤岛煤柱下底板岩体损伤过程与分区破坏特征分析[J]. 中国矿业大学学报,2021,50(5):963-974. ZHAO Hongbao,LIU Yihong,LI Jinyu,et al. Analysis of damage process and zonal failure characteristics of rock mass under floor of isolated coal pillar[J]. Journal of China University of Mining & Technology,2021,50(5):963-974.
[3]	冯国瑞,郝晨良,王朋飞,等. 近距采空区下回采巷道非对称变形机理及控制对策[J]. 中国矿业大学学报,2022,51(4):617-631. DOI: 10.3969/j.issn.1000-1964.2022.4.zgkydxxb202204001 FENG Guorui,HAO Chenliang,WANG Pengfei,et al. Asymmetric deformation mechanism and control measures for mining roadway under gob in close proximity[J]. Journal of China University of Mining & Technology,2022,51(4):617-631. DOI: 10.3969/j.issn.1000-1964.2022.4.zgkydxxb202204001
[4]	潘坤,鞠文君,王俊超,等. 大倾角近距离煤层综采运输巷断面形状与支护参数优化[J/OL]. 煤炭科学技术:1-11[2024-06-20]. http://kns.cnki.net/kcms/detail/11.2402.td.20240509.1326.002.html. PAN Kun,JU Wenjun,WANG Junchao,et al. Optimization of cross-sectional shape and support parameters of headgate in fully mechanized coal seam with large dip angle and close distance[J/OL]. Coal Science and Technology:1-11[2024-06-20]. http://kns.cnki.net/kcms/detail/11.2402.td.20240509.1326.002.html.
[5]	王龙飞,常泽超,杨战标,等. 深井近距离煤层群采空区下回采巷道联合支护技术[J]. 采矿与安全工程学报,2018,35(4):686-692. WANG Longfei,CHANG Zechao,YANG Zhanbiao,et al. Combined support technology of roadway under mined gob of ultra-distance seams in deep mine[J]. Journal of Mining & Safety Engineering,2018,35(4):686-692.
[6]	赵象卓,高照宇,吴涛,等. 近距离煤层群上行开采工作面巷道布置研究[J]. 地下空间与工程学报,2019,15(1):194-201. ZHAO Xiangzhuo,GAO Zhaoyu,WU Tao,et al. Study on roadway layout of the ascending mining panels in closed distance coal seams[J]. Chinese Journal of Underground Space and Engineering,2019,15(1):194-201.
[7]	范文生. 高应力软岩条件下的错层位巷道布置系统研究[D]. 北京: 中国矿业大学(北京), 2013. FAN Wensheng. Research on the stagger arrangement roadway layout system in soft rock under the conditions of high stress[D]. Beijing: China University of Mining and Technology-Beijing, 2013.
[8]	王泓博,张勇,庞义辉. 近距离煤层下行跨煤柱开采巷道的合理布局[J]. 东北大学学报(自然科学版),2023,44(1):100-109. WANG Hongbo,ZHANG Yong,PANG Yihui. Rational layout of roadway for downward cross-pillar mining in close distance coal seams[J]. Journal of Northeastern University(Natural Science),2023,44(1):100-109.
[9]	吕凯,何富连,许旭辉,等. 考虑工作面出煤柱尺度效应的下位回采巷道布置优化[J]. 煤炭科学技术,2023,51(3):52-60. LYU Kai,HE Fulian,XU Xuhui,et al. Layout of roadway under goaf based on scale effect of mining cross upper coal pillar[J]. Coal Science and Technology,2023,51(3):52-60.
[10]	马力. 极近距离煤层下伏回采巷道分区支护技术及应用[J]. 煤炭工程,2024,56(3):51-56. MA Li. Zoning support technology for entries under contiguous coal seams and its application[J]. Coal Engineering,2024,56(3):51-56.
[11]	张宝优. 极近距离煤层错层位巷道布置方式及围岩控制技术研究[J]. 煤炭科学技术,2021,49(8):88-95. ZHANG Baoyou. Study on layout of staggered roadway and surrounding rock control technology for ultra contiguous coal seams[J]. Coal Science and Technology,2021,49(8):88-95.
[12]	戴文祥,孔令海,张宁博,等. 特厚煤层掘进巷道强矿压显现机理及防治技术研究[J]. 煤炭科学技术,2017,45(8):74-79. DAI Wenxiang,KONG Linghai,ZHANG Ningbo,et al. Research on strong strata behaviours mechanism and prevention technology of heading roadway in extra-thick coal seam[J]. Coal Science and Technology,2017,45(8):74-79.
[13]	戴文祥,潘卫东,李猛,等. 近距离煤层强扰动巷道布置与支护技术研究[J]. 煤炭科学技术,2020,48(12):61-67. DAI Wenxiang,PAN Weidong,LI Meng,et al. Study on layout and support technology of strongly disturbed roadway in contiguous coal seam[J]. Coal Science and Technology,2020,48(12):61-67.
[14]	郑俊林,刘水,邓芹. 近距离煤层群开采下位煤层回采巷道合理布置的研究[J]. 煤炭技术,2023,42(8):75-78. ZHENG Junlin,LIU Shui,DENG Qin. Research on reasonable layout of mining roadway in lower coal seam in close distance coal seam group[J]. Coal Technology,2023,42(8):75-78.
[15]	张杰,孙建平,何义峰,等. 近距离煤层底板应力分布规律及巷道布局研究[J/OL]. 煤炭科学技术:1-13[2024-06-20]. http://kns.cnki.net/kcms/detail/11.2402.TD.20240315.1112.001.html. ZHANG Jie,SUN Jianping,HE Yifeng,et al. Study on floor stress distribution law and roadway layout of close distance coal seams[J/OL]. Coal Science and Technology:1-13[2024-06-20]. http://kns.cnki.net/kcms/detail/11.2402.TD.20240315.1112.001.html.
[16]	王志强,高健勋,武超,等. 近距离煤层上行开采巷道优化布置及煤层卸压效果试验分析[J]. 中国安全生产科学技术,2020,16(3):61-67. WANG Zhiqiang,GAO Jianxun,WU Chao,et al. Testing analysis on optimized layout of ascending mining roadway and effect of coal seam pressure relief in close distance coal seam[J]. Journal of Safety Science and Technology,2020,16(3):61-67.
[17]	王志强,郭磊,苏泽华,等. 倾斜中厚煤层错层位外错式巷道布置及相邻巷道联合支护技术[J]. 煤炭学报,2020,45(2):542-555. WANG Zhiqiang,GUO Lei,SU Zehua,et al. Layout and combined support technology of alternate exterior stagger arrang- ement roadway and adjacent roadways in inclined and medium-thick coal seam[J]. Journal of China Coal Society,2020,45(2):542-555.
[18]	刘超,赵国贞,王帅. 近距离煤层下位煤层巷道内外错布置及应力分布规律研究[J]. 矿业研究与开发,2022,42(12):63-69. LIU Chao,ZHAO Guozhen,WANG Shuai. Study on the internal and external staggered arrangement of roadway in lower coal seam and stress distribution law in close-distance coal seam[J]. Mining Research and Development,2022,42(12):63-69.
[19]	刘洪涛,韩洲,韩子俊,等. 近距离煤层下行采动应力场分布规律与巷道合理位置研究[J]. 煤炭科学技术,2024,52(5):1-10. DOI: 10.12438/cst.20221554 LIU Hongtao,HAN Zhou,HAN Zijun,et al. Research on the distribution law of downward mining stress field in close-distance coal seam and reasonable location of the roadway[J]. Coal Science and Technology,2024,52(5):1-10. DOI: 10.12438/cst.20221554
[20]	刘洪涛,韩子俊,韩洲,等. 叠合采动下围岩破坏区非均匀扩展机理及巷道稳定控制[J]. 采矿与安全工程学报,2024,41(3):522-532. LIU Hongtao,HAN Zijun,HAN Zhou,et al. Mechanism of non-uniform expansion and stability control in surrounding rock failure zone due to superimposed mining[J]. Journal of Mining & Safety Engineering,2024,41(3):522-532.
[21]	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. QIAN Minggao,SHI Pingwu,XU Jialin. Mine pressure and strata control[M]. Xuzhou:China University of Mining and Technology Press,2010.

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LI Yang

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School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China

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Research on the optimal position of roadways in fully mechanized caving faces in mine-out areas of close distance coal seams