[1]杨毅然,来兴平,单鹏飞.急倾斜特厚煤层顶板非对称平顶型拱结构对比分析[J].西安科技大学学报,2017,(04):485-491.[doi:10.13800/j.cnki.xakjdxxb.2017.0406]
 YANG Yi-ran,LAI Xing-ping,SHAN Peng-fei.Contrastive analysis of the asymmetrical flat-topped arch structure in steeply inclined thick coal seams[J].Journal of Xi'an University of Science and Technology,2017,(04):485-491.[doi:10.13800/j.cnki.xakjdxxb.2017.0406]
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急倾斜特厚煤层顶板非对称平顶型拱结构对比分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2017年04期
页码:
485-491
栏目:
出版日期:
2017-07-30

文章信息/Info

Title:
Contrastive analysis of the asymmetrical flat-topped arch structure in steeply inclined thick coal seams
文章编号:
1672-9315(2017)04-0485-07
作者:
杨毅然1来兴平123单鹏飞123
1.西安科技大学 能源学院,陕西 西安 710054; 2.教育部 西部矿井开采及灾害防治重点实验室,陕西 西安 710054; 3.陕西省岩层控制重点实验室,陕西 西安 710054
Author(s):
YANG Yi-ran1LAI Xing-ping123SHAN Peng-fei123
1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi'an 710054,China; 3.Shaanxi Provincial Key Laboratory of Ground Controlling,Xi'an 710054,China
关键词:
急倾斜特厚煤层(群) 非对称平顶型拱结构 数值计算 支架载荷
Keywords:
Key words:steeply inclined and extra thick coal seams(group) asymmetrical flat-topped arch structure numerical calculation support load
分类号:
TD 322
DOI:
10.13800/j.cnki.xakjdxxb.2017.0406
文献标志码:
A
摘要:
急倾斜特厚煤层(倾角大于45°)水平分段综放开采与缓倾斜煤层综放开采后的悬空顶板在赋存状态和受力环境上均存在明显差异,导致2种情况下顶板失稳垮落后所形成的顶板结构区别较大。以乌鲁木齐矿区急倾斜特厚煤层顶板结构演化规律为研究目标,采用理论分析、数值计算和现场监测等综合方法,揭示急倾斜特厚煤层非对称平顶型拱结构随煤岩层赋存角度变化的演化规律。结果表明:急倾斜特厚煤层顶板垮落后能够形成平顶型拱结构,并且随煤层倾角增大,非对称平顶型拱结构的拱高、高跨比和半拱跨度比均减小,拱顶位置向地表浅部方向移动,顶板垮落范围和垮落岩体的体积减小,支架承受载荷降低。
Abstract:
Abstract:Great differences have existed between both the occurrence and force condition of roof structure in steeply inclined and extra thick coal seam and gently inclined coal seam after their excavation,which result in various structures being formed when the roof losing stabilization under the two circumstances.This paper employs comprehensive methods such as theoretical analysis,numerical simulation and field data comparison,et al,aiming at the stability of supports employed in steeply inclined and extra thick coal seams of Urumqi mine region,revealing the dynamical evolution of the asymmetrical flat-topped arch structure in the roof of steeply inclined and extra thick coal seam.The research results show thatflat-topped arch structure could be formed after collapse of the roof of steeply inclined thick coal seams,andparameters such as arch height,length and crown keep declining with the increase of coal seam angle.Theposition of arch crown moves towards the shallow surface,roof falling range and caving rock mass decrease,and bearing load of the support reduces.

参考文献/References:

[1] 谢和平,周宏伟,刘建锋,等.不同开采条件下采动力学行为研究[J].煤炭学报,2011,36(7):1 067-1 074. XIE He-ping,ZHOU Hong-wei,LIU Jian-feng,et al.Mining-induced mechanical behavior in coal seams under different mining layout[J].Journal of China Coal Society,2011,36(7):1 067-1 074.
[2]何满潮,袁 越,王晓雷,等.新疆中生代复合型软岩大变形控制技术及其应用[J].岩石力学与工程学报,2013,32(3):433-441. HE Man-chao,YUAN Yue,WANG Xiao-lei,et al.Control technology for large deformation of Mesozoic compound soft rock in Xinjiang and its application[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(3):433-441.
[3]王宁波,张 农,崔 峰,等.急倾斜特厚煤层综放工作面采场运移与巷道围岩破裂特征[J].煤炭学报,2013,38(8):1 312-1 318. WANG Ning-bo,ZHANG Nong,CUI Feng,et al.Characteristics of stope migration and roadway surrounding rock fracture forfully-mechanized top-coal caving face in steeply dipping and extra-thick coal seam[J].Journal of China Coal Society,2013,38(8):1 312-1 318.
[4]WANG Jin-hua,YU Bin,KANG Hong-pu,et al.Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams[J].International Journal of Coal Science and Technology,2015, 2(2):97-161.
[5]石平五,张幼振.急斜煤层放顶煤开采“跨层拱”结构分析[J].岩石力学与工程学报,2006,25(1):79-82. SHI Ping-wu,ZHANG You-zhen.Structural analysis of arch of spanning strata of top coal caving in steep seam[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(1):79-82.
[6]伍永平,潘 杰,解盘石,等.大倾角煤层坚硬顶板预裂弱化的数值分析[J].西安科技大学学报,2010,30(1):7-13. WU Yong-ping,PAN Jie,XIE Pan-shi,et al.Numerical analysis of hard roof segment pre-blasting in steep coal seams[J].Journal of Xi'an University of Science and Technology,2010,30(1):7-13.
[7]王金安,冯锦艳,蔡美峰.急倾斜煤层开采覆岩裂隙演化与渗流的分形研究[J].煤炭学报,2008,33(2):162-165. WANG Jin-an,FENG Jin-yan,CAI Mei-feng.Fractal analysis on the crack evolution and fluid flow in the overburden strata caused by high steep thick coal seam mining[J].Journal of China Coal Society,2008,33(2):162-165.
[8]LI Xiao-meng,WANG Zhao-hui,ZHANG Jin-wang.Stability of roof structure and its control in steeply inclined coal seams[J].International Journal of Mining Science and Technology,2017,27(2):359-364.
[9]鞠文君,李文洲.急斜特厚煤层水平分段开采基本顶断裂力学模型[J].煤炭学报,2008,33(6):606-608. JU Wen-jun,LI Wen-zhou.Fractural mechanical model of main roof along inclined for full-mechanized top-coal caving in steep extra-thick coal seam[J].Journal of China Coal Society,2008,33(6):606-608.
[10]Das A J,Mandal P K,Bhattacharjee R,et al. Evaluation of stability of underground workings for exploitation of an inclined coal seam by the ubiquitous joint model[J].International Journal of Rock Mechanics and Mining Sciences,2017,93:101-114.
[11]邵小平,石平五,贺桂成,等.急斜放顶煤开采顶板卸载拱结构分析[J].北京科技大学学报,2007,29(5):447-451. SHAO Xiao-ping,SHI Ping-wu,HE Gui-cheng,et al.Analysis on unloaded arch structure of roof in mining steep seams using horizontal section top-coal caving[J].Journal of University of Science and Technology Beijing,2007,29(5):447-451.
[12]MENG Xiang-rui,GAO Zhao-ning,WANG Xiang-qian.Study on stress distribution and failure criterion of the roof for the severely inclined coal seam under long wall working[J].Journal of Coal Science and Engineering,2012,18(2):118-122.

备注/Memo

备注/Memo:
基金项目:国家重点基础研究发展计划(973)项目(2015CB251602); 国家重点基础研究发展计划(973)项目前期研究专项(2014CB260404) 通讯作者:杨毅然(1990-),男,山东单县人,博士研究生,E-mail: yangyirandr@yeah.net
更新日期/Last Update: 1900-01-01