海下强膨胀软岩动压巷道恒阻让压耦合支护技术研究

doi:10.13722/j.cnki.jrme.2017.0976

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摘要

为解决北皂煤矿强膨胀软岩回采巷道在超前动压力作用下引起的开挖初期变形量大、全断面持续大变形、U型钢支架破坏严重等问题，采用微观物化分析、地应力测试等手段，揭示围岩强度低、强膨胀性、强吸水软化、围岩应力四周来压、支护与围岩变形不耦合的失稳机制，提出恒阻锚杆支护方法，并揭示恒阻锚杆可通过高阻、高预紧力、可变形让压结构特征支护强膨胀软岩的支护机制，最终提出锚梁结构强化顶板+恒阻锚杆加固两帮+注浆锚固支护底角的恒阻让压耦合支护方案，并采用数值模拟进行支护效果对比分析。现场试验表明：恒阻让压耦合支护能够较大幅度减小巷道围岩变形量和超前动压影响范围，其中变形量最大282 mm，超前动压影响距离70 m，分别较普通螺纹钢锚杆+锚梁支护变形量减小64.8%、动压影响距离减小10 m，较U型钢架棚壁后浇筑混凝土支护变形量减小54.7%，动压影响范围减小20 m。在同类软岩巷道中具有良好的推广应用价值。

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	蔡峰1
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	王炯1
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	周峰4

关键词 ：采矿工程, 海下软岩, 运输巷道, 恒阻锚杆, 数值模拟, 耦合支护

Abstract：

To solve the problems such as large deformation at the initial stage of excavation，large deformation of the whole section and serious destruction of U steel support caused by the dynamic pressure in the strong swelling soft rock roadway in the Beizao coal mine，the instability mechanism of low strength，strong expansion，strong water absorption softening，surrounding rock pressure，non coupling between support and surrounding rock deformation is revealed by means of microscopic physical analysis and in-situ stress test. The constant resistance bolt support method was put forward，and the support mechanism of the constant resistance anchor bolt can be supported by the high resistance，high pre tightening force，deformation and pressure release structure to support the strong swelling soft rock. Finally constant resistance supporting scheme for pressure coupling consisted of the anchor beam structure strengthening roof + constant resistance anchor reinforcing for two sides + grouting anchorage reinforcing bottom was proposed. Numerical simulation is used to compare and analyze the supporting effect. The test results show that the constant resistance pressure coupling support can greatly reduce the deformation of roadway surrounding rock and the influence range of leading dynamic pressure，the maximum deformation is 282 mm，ahead of the dynamic pressure distance is 70 m. Compared with the ordinary steel bolt and anchor beam support deformation，the deformation reduced by 64.8% and the dynamic pressure influence distance reduced by 10 m，compared with the U type steel frame shed，the deformation reduced by 54.7%，and the dynamic pressure influence range decreased by 20 m. It has good popularization and application value in similar soft rock roadway.

Key words： mining engineering soft rock under sea constant resistance bolt numerical simulation coupling support

引用本文:

蔡峰1，2，3，孙晓明1，2，王炯1，2，周峰4. 海下强膨胀软岩动压巷道恒阻让压耦合支护技术研究[J]. 岩石力学与工程学报, 2017, 36(S2): 3957-3964.
CAI Feng1，2，3，SUN Xiaoming1，2，WANG Jiong1，2，ZHOU Feng4. Constant resistance coupling support technology of dynamic pressure roadway under sea with strongly swelling soft rock. , 2017, 36(S2): 3957-3964.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2017.0976 或 https://rockmech.whrsm.ac.cn/CN/Y2017/V36/IS2/3957

[1]	戴华阳，廖孟光，孟宪营，等. 峰峰矿区九龙矿水库下采煤安全性分析[J]. 煤炭学报，2014，39(增2)：295-300.(DAI Huayang，LIAO Mengguang，MENG Xianying，et al. Analysis of the security of mining under the reservoir in Jiulong coal mine of Fengfeng mining area[J]. Journal of China Coal Society，2014，39(Supp.2)：295-300.(in Chinese))
[2]	樊振丽. 纳林河复合水体下厚煤层安全可采性研究[博士学位论文][D]. 北京：中国矿业大学(北京)，2013.(FAN Zhenli. Mining safety research of thick coal seam under aquifers and surface water in nalinhe mine area[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology，Beijing，2013.(inChinese))
[3]	胡巍，徐智敏，王文学，等. 海下采煤软弱覆岩导水断裂带发育高度研究[J]. 煤炭学报，2013，38(8)：1 338-1 344.(HU Wei，XU Zhimin，WANG Wenxue，et al. Research on development of water flowing fractures in soft overlying strata for coal mining under sea[J].Journal of China Coal Society，2013，38(8)：1 338-1 344.(in Chinese))
[4]	李永明. 水体下急倾斜煤层充填开采覆岩稳定性及合理防水煤柱研究[博士学位论文][D]. 徐州：中国矿业大学，2012. (LI Yongming. Research onstability of overlying strata and reasonable waterproof coal pillar with backfilling mining in steep seam under water body [Ph. D. Thesis][D]. Xuzhou：China University ofMining and Technology，2012. (in Chinese))
[5]	SUI W H，LIU J Y，YANG S G. et al. Hydrogeologicalanalysis and salvage of a deep coalmine after an underground water inrush[J].Environmental Earth Sciences，2011，62(4)：735-749.
[6]	何满潮，谢和平，彭苏萍，等. 深部开采岩体力学研究[J].岩石力学与工程学报，2005，24(16)：2 803-2 813.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2803-2813.(in Chinese))
[7]	王金华. 我国煤巷锚杆支护技术的新发展[J].煤炭学报，2007，32(2)：113-118.(WANG Jinhua. New development of rock bolting technology for coal roadway in China[J]. Journal of China Coal Society，2007，32(2)：113-118.(in Chinese))
[8]	康红普，王金华，林健. 煤矿巷道锚杆支护应用实例分析[J]. 岩石力学与工程学报，2010，29(4)：649-664.(KANG Hongpu，WANG Jinhua，LIN Jian. Case studies of rock bolting in coal mine roadways[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(4)：649-664.(in Chinese))
[9]	余伟健，高谦，朱川曲. 深部软弱围岩叠加拱承载体强度理论及应用研究[J]. 岩石力学与工程学报，2010，29(10)：2 134-2 142.(YU Weijian，GAO Qian，ZHU Chuanqu. Study of strength theory andapplication of overlap arch bearing body for deep soft surroundingrock[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：2 134-2 142.(in Chinese))
[10]	赵家巍，柏建彪，卞卡，等.深井软岩巷道均衡让压控制技术[J].煤炭科学技术，2013，41(4)：40-44.(ZHAO Jiawei，BAI Jianbiao，BIAN Ka，et al.Balanced yield control technology of soft rock roadway in deep mine[J].Coal Science and Technology，2013，41(4)：40-44.(in Chinese))
[11]	何满潮，孙晓明. 中国煤矿软岩巷道工程支护设计与施工指南[M].北京：科学出版社，2004：22-39. (HE Manchao，SUN Xiaoming. China coal mine soft rock engineering supporting design and construction guide[M]. Beijing：Science Press，2004：22-39.(in Chinese))
[12]	崔希海，高延法，范庆忠.巷道围岩最优恒阻支护计算方法[J]. 岩土工程学报，2006，28(5)：674-678.(CUI Xihai，GAO Yanfa，FAN Qingzhong. Optimum calculating method for constant resistant supporting of roadway[J].Chinese Journal of Geotechnical Engineering，2006，28(5)：674-678.(in Chinese))
[13]	吴拥政，康红普，吴建星，等. 矿用预应力钢棒支护成套技术开发及应用[J]. 岩石力学与工程学报，2015，34(增1)：3230-3236.(WU Yongzheng，KANG Hongpu，WU Jianxing，et al. Development and application of mine prestressed steel bars supporting technology[J].Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.1)：3230-3236.(in Chinese))
[14]	张国锋，于世波，李国峰.巨厚煤层三软回采巷道恒阻让压互补支护研究[J]. 岩石力学与工程学报，2011，30(8)：1619-1626.(ZHANG Guofeng，YU Shibo，LI Guofeng. Research on constant resistance and complementary supporting sysytem of threee soft tertiary gallery[J]. Chinese Journal Rock Mechanics and Engineering，2011，30(8)：1619-1626.(in Chinese))
[15]	王连国，李明远，王学知.深部高应力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)：2889-2893.(WANG Lianguo，LI Mingyuan，WANG Xuezhi.Study on mechanisms and technology for bolting and grouting in special soft rock roadway under high stress[J].Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2889-2893.(in Chinese))
[16]	王文波. 海下覆岩岩性结构特征及隔水性能研究[J]. 煤矿开采，2010，15(3)：10-13.(WANG Wenbo. Research on lithology characteristic and water-resisting property of overlying strata under sea area[J]. Coal Mining Technology，2010，15(3)：10-13.(in Chinese))
[17]	付志亮，牛学良，宁伟，等. 海下第三系软岩巷道蠕变控制及支护机制研究[J]. 地下空间与工程学报，2007，3(增1)：1 192-1 194. (FU Zhiliang，NIU XUEliang，NING Wei，et al. Study on creep control and supporting mechanism of tertiary soft rock roadway in the sea[J]. Chinese Journal of Underground Space and Engineering，2007，3(Supp.1)：1192-1194.(in Chinese))
[18]	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 engeineering application of anchor bolt wth constant resistance and large deformation[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1 297-1 308.(in Chinese))
[19]	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 Xiaomining，WANG Dong，WANG Cong，et al. Tensile properties and application of constantresistance and large deformation bolts[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1 765-1 771.(in Chinese))
[20]	张国锋，王二雨，许丽莹.煤矿高恒阻大变形锚索受力特性、规律及应用研究[J]. 岩石力学与工程学报，2016，35(10)：2 033-2042.(ZHANG Guofeng，WANGEryu，XULiying. Mechanical characteristics of high constant resistance and large deformation anchor rope in coal mines[J]. Chinese Journal Rock Mechanics and Engineering，2016，35(10)：2 033-2 042.(in Chinese))
[21]	连传杰，徐卫亚，王志华. 一种新型让压管锚杆的变形特性及其支护作用机制分析[J].防灾减灾工程学报，2008，28(2)：242-247.(LIAN Chuanjie，XUWeiya，WANGZhihua. Analysis of deforamtion characteristic and supporting mechanism of a new-typed yielding anchor bolt[J]. Journal of DisasterPrevention and Mitigation Engineering，2008，28(2)：242-247.(in Chinese))
[22]	胡传亭，郭爱民，乔理学.虎溪矿井深部回采巷道变形让压锚杆的应用[J].煤炭科学技术，2009，37(8)：18-23.(HU Chuanting，GUO Aimin，QIAO Lixue. Application of deformation and yield bolt to deep mining gateway of Huxi mine[J].Coal Science and Technology，2009，37(8)：18-23.(in Chinese))