改进支架结构强度演化规律分析

doi:10.13722/j.cnki.jrme.2014.1730

摘要
图/表
参考文献(20)
相关文章 (15)

全文: PDF (5007 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要针对膨胀、极软岩巷道特殊支护要求，以研发高强度棚式支架为目的，采用结构力学弯矩解析的方法，对不同侧压系数下支架弯矩分布规律，以及改变底拱高度、增加底板横梁、增加顶板横梁、同时增加顶底板横梁、增加顶底板横梁+斜撑5类改进结构弯矩分布规律进行分析。研究结果表明：不同侧压系数下拱顶、拱底弯矩较大，其为支架破坏的主要弱面；改变底拱高度对拱底强度影响较大。在原始支架的基础上，增加底板横梁对提高拱底强度作用明显，但对拱顶强度影响较小；增加顶板横梁对提高拱顶强度作用明显，但对拱底强度影响较小；增加顶底板横梁后，拱顶、拱底强度均得到明显提高，靠近顶底位置的两横梁加固方案其拱顶、拱底强度系数分别提高到3.51和2.715；在顶底板横梁的基础上增加斜撑进一步加固后，顶拱正“V”+底拱倒“V”组合加固结构中拱顶、拱底强度系数分别提高到3.719和2.889。考虑经济效益及现场施工影响，确定靠近顶底位置的两横梁加固方案为较理想结构形式。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	李青海1
	2
	史卫平3
	文志杰4
	曲广龙1
	2

关键词 ：采矿工程, 支架结构, 方案设计, 弯矩解析, 关键位置, 强度系数

Abstract：According to special supporting requirements in swelling，extremely soft rock roadway，for the purpose of developing shed support with high-strength，relying on moment analysis of structural mechanics，we analyzed the supports moment distribution under different lateral pressure coefficient. And we also analyzed moment distribution in 5 improved structures of different height in bottom arch，original support with floor beam，original support with roof beam，original support with floor and roof beams，original support with floor，roof beams and other ribs. The results showed that under different lateral pressure coefficient，top and bottom arch demonstrated larger moment and were the main weak plane when support destructed. There was greater impact on strength of bottom arch as height of bottom arch increasing. Based on original support，strength of bottom arch was enhanced obviously when floor beam added，but little effect on top arch and strength of top arch was enhanced obviously when roof beam added，but little effect on bottom arch. Strength of top and bottom arch were enhanced obviously when roof and floor beams added，and the strength coefficient of top and bottom arch was improved to 3.51 and 2.715 when the roof beam closed to top and floor beam closed to bottom. Based on roof and floor beams，braces added in top and bottom arch further，the strength coefficient of top and bottom arch was improved to 3.719 and 2.889 under combination structure of “V” in vault and “” in dome. Consider the economic benefits and the impact of construction on site，we gained the ideal support structure with roof beam closed to top and floor beam closed to bottom.

Key words： mining engineering support structure program design moment analysis key positions strength coefficient

引用本文:

李青海1，2，史卫平3，文志杰4，曲广龙1，2. 改进支架结构强度演化规律分析[J]. 岩石力学与工程学报, 2015, 34(S2): 4295-4307.
LI Qinghai1，2，SHI Weiping3，WEN Zhijie4，QU Guanglong1，2. ANALYSIS OF STRENGTH EVOLUTION LAW OF IMPROVED SUPPORT STRUCTURES. , 2015, 34(S2): 4295-4307.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2014.1730 或 https://rockmech.whrsm.ac.cn/CN/Y2015/V34/IS2/4295

[1]	何满潮，郭志飚. 恒阻大变形锚杆力学特性及其工程应用[J]. 岩石力学与工程学报，2014，33(7)：1 297-1 308.(HE Manchao，GUO Zhibiao. Mechanical property and engineering application of anchor bolt with constant resistance and large deformation[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1297-1308.(in Chinese))
[2]	孙晓明，王冬，王聪，等. 恒阻大变形锚杆拉伸力学性能及其应用研究[J]. 岩石力学与工程学报，2014，33(9)：1 765-1 771. (SUN Xiaoming，WANG Dong，WANG Cong，et al. Tensile properties and application of constant resistance and large deformation bolts[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1765-1771.(in Chinese))
[3]	康红普，王金华，林健. 高预应力强力支护系统及其在深部巷道中的应用[J]. 煤炭学报，2007，32(12)：1 233-1 238.(KANG Hongpu，WANG Jinhua，LIN Jian. High pretensioned stress and intensive bolting system and its application in deep roadways[J]. Journal of China Coal Society，2007，32(12)：1 233-1 238.(inChinese))
[4]	康红普，林健，吴拥政. 全断面高预应力强力锚索支护技术及其在动压巷道中的应用[J]. 煤炭学报，2009，34(9)：1 153-1 159. (KANG Hongpu，LIN Jian，WU Yongzheng. High pretension stress and intensive cable bolting technology setin full section and application in entry affected by dynamic pressure[J]. Journal ofChina Coal Society，2009，34(9)：1153-1159.(in Chinese))
[5]	张农，王成，高明仕，等. 淮南矿区深部煤巷支护难度分级及控制对策[J]. 岩石力学与工程学报，2009，28(12)：2 421-2 428. (ZHANG Nong，WANG Cheng，GAO Mingshi，et al. Roadway support difficulty classification and controlling techniques for huainan deep coal mining[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(12)：2421-2428.(in Chinese))
[6]	连传杰，徐卫亚，王亚杰，等. 新型高强预应力让压锚杆巷道支护性能的数值模拟[J]. 岩土力学，2010，31(7)：2 329-2 335.(LIAN Chuanjie，XU Weiya，WANG Yajie，et al. Numerical simulation of entry performance supported by a new high strength and high pretension yieldable bolts[J]. Rock and Soil Mechanics，2010，31(7)：2329-2335.(in Chinese))
[7]	李冲，徐金海，吴锐. 深井软岩巷道锚索-网壳衬砌耦合支护机制与实践[J]. 采矿与安全工程学报，2011，28(2)：193-197.(LI Chong，XU Jinhai，WU Rui. Mechanism and practice of coupling support technology with anchor-net shell lining in deep mine roadway in soft strata[J]. Journal of Mining andSafety Engineering，2011，28(2)：193-197.(in Chinese))
[8]	高延法，王波，王军，等. 深井软岩巷道钢管混凝土支护结构性能试验及应用[J]. 岩石力学与工程学报，2010，29(增1)：2 604-2 609. (GAO Yanfa，WANG Bo，WANG Jun，et al. Test on structural property and application of concrete-filled steel tube support of deep mine and soft rock roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.1)：2 604-2 609.(in Chinese))
[9]	王波. 软岩巷道变形机制分析与钢管混凝土支架支护技术研究[博士学位论文][D]. 北京：中国矿业大学，2009.(WANG Bo. Analysis on the laws of tunnel deformation in soft rock and the supporting technology of concrete-filled steel tube support[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology，2009.(in Chinese))
[10]	李术才，王琦，李为腾，等. 深部厚顶煤巷道让压型锚索箱梁支护系统现场试验对比研究[J]. 岩石力学与工程学报，2012，31(4)：656-666.(LI Shucai，WANG Qi，LI Weiteng，et al. Comparative field test study of pressure relief anchor box beam support system in deep thick top coal roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(4)：656-666.(in Chinese))
[11]	王琦，李术才，李为腾，等. 深部煤巷高强让压型锚索箱梁支护系统研究[J]. 采矿与安全工程学报，2013，30(2)：173-180.(WANG Qi，LI Shucai，LI Weiteng，et al. Research and application of pressure relief anchor box beam support system in deep coal roadway[J]. Journal of Mining and Safety Engineering，2013，30(2)：173-180.(in Chinese))
[12]	谢广祥，常聚才. 深井巷道控制围岩最小变形时空耦合一体化支护[J]. 中国矿业大学学报，2013，42(2)：183-187.(XIE Guangxiang，CHANG Jucai. Study of space-time coupled and integrative supporting method of controlling the minimum deformation of surrounding rock in deep mine roadway[J]. Journal of China University of Mining andTechnology，2013，42(2)：183-187.(in Chinese))
[13]	王连国，李明远，王学知. 深部高应力极软岩巷道锚注支护技术研究[J]. 岩石力学与工程学报，2005，24(16)：2 889-2 893.(WANG Lianguo，LI Mingyuan，WANG Xuezhi. Study on mechanisms and technology for bolting and grouting in special soft rock roadways under high stress[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2889-2893.(in Chinese))
[14]	谢文兵，荆升国，王涛，等. U型钢支架结构稳定性及其控制技术[J]. 岩石力学与工程学报，2010，29(增2)：3 743-3 748.(XIE Wenbing，JING Shengguo，WANG Tao，et al. Structural stability of U-steel support and its control technology[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.2)：3743-3748.(in Chinese))
[15]	荆升国. 高应力破碎软岩巷道棚-索协同支护围岩控制机制研究[博士学位论文][D]. 徐州：中国矿业大学，2009.(JING Shengguo. Study on control mechanism of cooperating support of frame and anchor cable in soft fragmentized surrounding rock roadway with high stress[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2009.(in Chinese))
[16]	牛双建，靖洪文，张忠宇，等. 深部软岩巷道围岩稳定控制技术研究及应用[J]. 煤炭学报，2011，36(6)：914-919.(NIU Shuangjian，JING Hongwen，ZHANG Zhongyu，et al. Study on control technology of surrounding rocks in deep soft roadway and its application[J]. Journal of China Coal Society，2011，36(6)：914-919.(in Chinese))
[17]	余伟健，高谦. 高应力巷道围岩综合控制技术及应用研究[J]. 煤炭科学技术，2010，38(2)：1-4.(YU Weijian，GAO Qian. Surrounding rock comprehensive control technology and application to mine high stress roadway[J]. Coal Science and Technology，2010，38(2)：1-4.(in Chinese))
[18]	李青海. 查干淖尔一号井软岩巷道失稳机制及其控制研究[博士学位论文][D]. 北京：中国矿业大学，2013.(LI Qinghai. Study on instability mechanism of soft rock roadway and its control in no.1 mineof Chagannuoer[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology，2013.(in Chinese))
[19]	龙驭球，包世华. 结构力学教程[M]. 北京：高等教育出版社，2006：274-280.(LONG Yuqiu，BAO Shihua. Structural mechanics tutorial[M]. Beijing：Higher Education Press，2006：274-280.(in Chinese))
[20]	金朝阳. 现代采矿工程设计全书[M]. 北京：当代中国音像出版社，2010：141-142.(JIN Chaoyang. Modern mining engineering design book[M]. Beijing：Contemporary Chinese Audiovisual Press，2010：141-142.(in Chinese))