大断面煤巷围岩变形特征及支护技术研究

doi:10.19286/j.cnki.cci.2021.10.008

Abstract
Figure/Table
References (14)
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract For Wuyang Mine 7810 large section roadway with top heading, FLAC3D numerical simulation software was used to establish the excavation model, and the deformation characteristics of the roadway surrounding rock were studied. The results showed that when the coal seam roadway mining, the deformation of the two sides > the deformation of the bottom plate > the deformation of the top plate, and when the roadway was supported, the strength of the top plate support can be reduced appropriately. Based on the research results, "2-2" step-by-step arrangement of roof anchor cable and the anchor cable spacing were adopted. The results of the field application showed that the maximum displacement of the top and bottom slabs was 35 mm and the maximum displacement of the two sides was 24 mm, both of which were less than 40 mm, the surrounding rock of the roadway was stable and the support effect was good, which provided reference for the roadway support under similar geological conditions.

Key words： large section driving along the roof deformation characteristics support mod

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Liu Lianchao

Cite this article:

Liu Lianchao. Study on deformation characteristics and support technology of coal surrounding rock in large cross section[J]. CCI, 2021, 44(10): 24-27.

URL:

http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2021.10.008 OR http://www.mtyhg.com.cn/EN/Y2021/V44/I10/24

1 ] 柴肇云，康天合，李义宝，等. 特厚煤层大断面切眼锚索支护的作用[ J ]. 煤炭学报，2008，33（ 7 ）：732 - 737. [ 2 ] 单仁亮，李兆龙，鲍永生，等. 大断面厚顶煤回采巷道锚杆索协同支护技术研究[ J ]. 矿业研究与开发，2020，40（ 1 ）：70 - 75. [ 3 ] 何富连，王晓明，谢生荣. 特大断面破裂煤巷顶板弹性基础梁模型研究[ J ]. 煤炭科学技术，2014，42（ 1 ）：34 - 36，142. [ 4 ] 肖丹，赵恩彪. 大断面巷道软弱厚煤层顶板稳定性控制与对策研究[ J ]. 矿业安全与环保，2017，44（ 6 ）：31 - 35. [ 5 ] 谢生荣，潘浩. 大跨度煤巷双跨桁架锚索控制机理及应用[ J ]. 矿业科学学报，2018，3（ 2 ）：148 - 155. [ 6 ] 谢生荣，陈冬冬，曾俊超，等. 考虑两侧煤柱与弹性煤体基础的基本顶板初次破断特征[ J ]. 煤炭学报，2019，44（ 1 ）：115 - 126. [ 7 ] 谢生荣，陈冬冬，曾俊超，等. 基本顶板结构初次破断与全区域反弹时空关系[ J ]. 煤炭学报，2019，44（ 9 ）：2 650 - 2 663. [ 8 ] 陈冬冬，何富连，曾俊超，等. 弹性基础边界基本顶板结构周期破断与全区域反弹时空关系[ J ]. 岩石力学与工程学报，2019，38（ 6 ）：1 172 - 1 187. [ 9 ] 陈冬冬，谢生荣，何富连，等. 长边两侧采空（煤柱）弹性基础边界基本顶薄板初次破断[ J ]. 煤炭学报，2018，43（ 12 ）：3 273 - 3 285. [ 10 ] 郭良，黄成麟，张春雷. 高水平应力下大断面巷道围岩破坏机理及支护方案[ J ]. 煤矿安全，2018，49（ 9 ）：266 - 230. [ 11 ] 赵科，张剑. 厚煤层大断面巷道支护技术研究[ J ]. 煤炭科学技术，2019，47（ 3 ）：101 - 105. [ 12 ] 彭杨皓，张书鹏，张艺源，等. 煤矿大断面托顶煤巷道围岩变形破坏机理[ J ]. 煤矿安全，2019，50（ 5 ）：263 - 268. [ 13 ] 王文才，王政，尹旭. 大断面回采巷道围岩耦合支护技术[ J ]. 煤矿安全，2019，50（ 7 ）：277 - 281. [ 14 ] 朱飞. 大断面煤巷破碎围岩支护技术研究[ J ]. 煤炭工程，2019，51（ 10 ）：112 - 115.