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| Analysis of reasonable coal pillar width along gob-side roadway of thick coal seam based on block discrete element |
| Jiang Zhigang |
| Kailuan(Group) Limited Liability Corporation, Tangshan 063000， China |
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Abstract Gob-side entry is an important technology for green and efficient mining of coal resources. The mine pressure of gob-side entry in thick coal seam is more intense and unique. No. 2375 Face of Fangezhuang Mine was taken as the engineering background, the stability of surrounding rock of gob-side entry in thick coal seam under different width of coal pillar was simulated and analyzed by using the block discrete element calculation program UDEC, and the reasonable coal pillar width was determined to be 5.5 m under the geological conditions of the mine. The field practice showed that after using the width coal pillar to protect the roadway, the roadway section rate met the production requirements, and the rationality of the design parameters was verified. The relevant research results could provide reference for the design of gob-side entry in thick coal seam under similar occurrence conditions.
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| 1 ] 张浩春. 注浆加固技术在小煤柱沿空掘巷中的应用[ J ]. 煤炭与化工，2022，45（ 12 ）：19 - 21，24.
[ 2 ] 叶 飞，严 斌，张小宇. 巨厚煤层临空巷道大变形控制支护优化技术研究[ J ]. 煤炭与化工，2022，45（ 3 ）：45 - 47.
[ 3 ] 文 涛. 强应力扰动下回采巷道支护方案设计及工业性试验[ J ]. 煤炭与化工，2020，43（ 7 ）：26 - 27，122.
[ 4 ] 马敬龙，张道福，宁 杉，等. 综采动压沿空巷道合理掘巷时间研究[ J ]. 煤炭技术，2019，38（ 2 ）：5 - 8.
[ 5 ] 范军平，金子奥. 沿空掘巷合理煤柱宽度及支护技术研究[ J ]. 煤炭技术，2019，38（ 2 ）：11 - 14.
[ 6 ] 苏 超，郭 萌，鲁 健. 松软厚煤层沿空掘巷窄煤柱护巷合理宽度确定[ J ]. 煤炭技术，2018，37（ 9 ）：103 - 106.
[ 7 ] 王志强，石 磊，孙中文，等. 厚煤层巷道煤柱留设及沿空巷道围岩控制机理研究[ J ]. 煤矿安全，2018，49（ 8 ）：48 - 52.
[ 8 ] 王志强，苏 越，石 磊，等. 错层位外错式沿空掘巷机理及相邻巷道的立体化联合支护技术[ J ]. 煤炭学报，2018，43（ S1 ）：12 - 20.
[ 9 ] 李生鑫，杜朝阳，翟春佳. 特厚煤层综放工作面沿空巷道合理煤柱宽度与围岩控制[ J ]. 煤矿安全，2018，49（ 5 ）：147 - 150.
[ 10 ] 邢天海，王 波，王 军，等. 深部厚煤层沿空掘巷留设煤柱加固试验研究[ J ]. 煤炭技术，2019，38（ 1 ）：33 - 36. |
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