[1]李金奎,李学彬,刘东生,等.三软煤层巷道锚网喷联合支护的数值模拟[J].西安科技大学学报,2009,(03):270-273.
 LI Jin-kui,LI Xue-bin,LIU Dong-sheng,et al.Numerical simulation for bolting net spray composite support of three soft coal seam tunnel[J].Journal of Xi'an University of Science and Technology,2009,(03):270-273.
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三软煤层巷道锚网喷联合支护的数值模拟()
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2009年03期
页码:
270-273
栏目:
出版日期:
2009-06-11

文章信息/Info

Title:
Numerical simulation for bolting net spray composite support of three soft coal seam tunnel
文章编号:
1672-9315(2009)03-0270-04
作者:
李金奎1李学彬1刘东生1郑学军2
1.大连大学 生态地质环境研究院,辽宁 大连 116622; 2.龙口矿业集团梁家煤矿,山东 龙口 265700
Author(s):
LI Jin-kui1LI Xue-bin1LIU Dong-sheng1ZHENG Xue-jun2
1.Geological Environmental Institute, Dalian University, Dalian116622,China; 2. Longkou Mining Group Co. Ltd, Liangjia Mine, Longkou265700,China
关键词:
关键词: 三软煤层 数值模拟 巷道底鼓 混凝土喷层
Keywords:
three soft coal seam numerical simulation tunnel bottom swelling concrete spray layer
分类号:
TD353
文献标志码:
A
摘要:
摘 要: 通过数值模拟软件FLAC3D对梁家煤矿三软煤层4105工作面巷道锚网喷联合支护效果进行数值模拟,分析了联合支护后围岩位移应力分布和混凝土喷层及锚杆的力学特性。研究结果表明,三软煤层巷道锚网喷联合支护,有效地改善了围岩的应力状态,降低了顶板与两帮收敛速度与位移,但巷道底鼓较为明显,两帮锚杆承载明显大于顶板锚杆,底角锚杆最大,应确保底角锚杆的锚固效果,以限制底板和两帮的变形。锚网喷联合支护适应三软煤层变形特征,维持了巷道围岩稳定,满足梁家煤矿安全生产需要。
Abstract:
With the application of numerical simulation software FLAC3D, this paper has simulated the bolting net spray composite support of three soft coal seam 4105 face tunnel in Liangjia Mine, and analyzed wall rock displacement and stress distribution and the mechanical characteristics of concrete spray layer and bolt. The result indicates that three soft coal seam tunnel has been supported by the bolting net spray composite support, which improves wall rock stress and reduces the displacement speed and total displacement of the roof and sides, but tunnel has apparent bottom swelling phenomenon; the stress of sides bolt is greater than roof bolt and bottom corner bolt is biggest, should ensure bottom corner bolt's bolting effect to restrict the deform of tunnel bottom and sides. The bolting net spray composite support adapts to the deformation of three soft coal seam, maintains the stability of tunnel surrounding and meets Liangjia Mine safe production needs.

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备注/Memo

备注/Memo:
收稿日期: 2008-09-25 基金项目: 国家自然科学基金资助项目(5070400); 辽宁省高等学校科研计划项目(2008S006) 作者简介: 李金奎(1972-),男,黑龙江安达人,博士,主要从事岩体力学与工程、巷道控制等方面的教学和研究工作.
更新日期/Last Update: 2009-06-11