煤巷顶板厚层跨界锚固原理与应用研究

doi:10.13722/j.cnki.jrme.2020.0970

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Abstract Surrounding rock control of deep mining roadways is a key research direction of bolt support in the future. Taking the coal roadways of Hulusu coal mine in three different periods as the engineering background，this paper analyzes the characteristics of roof progressive failure through drilling imaging，and points out the problems of insufficient coordination and low construction efficiency of combined support. To better study these problems，a single thick layer support system is proposed. Discrete element numerical simulation is used to study the evolution law of roadway displacement and surrounding rock fractures supported by bolts of different lengths and to clarify the correlation mechanism between the bolt length and the surrounding rock damage. The study reveals the principle of thick-layer transboundary anchoring in which the damage area near the bolt tip moves upward and gradually weakens with increasing the bolt length. A thick layer anchoring system and cross-boundary long anchoring technology are developed to realize continuous stress transmission in both horizontal and vertical directions by using long bolts on the roof in time. The results were applied in the 21205 working face of Hulusu coal mine. As is proved，the new technology significantly improves the driving speed of coal roadways，and reduces the development depth of roof fractures to within 0.61 m of the shallow anchorage zone. Meanwhile，the technology can also effectively curb the long-term large-scale“V”type rib spalling problem and control the large deformation of surrounding rock of coal roadways with deep composite roof.

Key words： mining engineering coal roadway roof thick layer cross-boundary anchorage bolt length driving speed

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	Articles by authors
	XIE Zhengzheng1
	2
	ZHANG Nong1
	2
	3
	HAN Changliang1
	2
	AN Yanpei1
	2

Cite this article:

XIE Zhengzheng1,2,ZHANG Nong1, et al. Research on principle and application of roof thick layer cross-boundary anchorage in coal roadways[J]. , 2021, 40(6): 1195-1208.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0970 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I6/1195

[1] 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)：2 803–2 813.(in Chinese))
[2] 康红普，姜鹏飞，黄炳香，等. 煤矿千米深井巷道围岩支护–改性–卸压协同控制技术[J]. 煤炭学报，2020，45(3)：845–864.(KANG Hongpu，JIANG Pengfei，HUANG Bingxiang，et al. Roadway strata control technology by means of bolting-modification-destressing in synergy in 1000 m deep coal mines[J]. Journal of China Coal Society，2020，45(3)：845–864.(in Chinese))
[3] 黄炳香，张农，靖洪文，等. 深井采动巷道围岩流变和结构失稳大变形理论[J]. 煤炭学报，2020，45(3)：911–926.(HUANG Bingxiang，ZHANG Nong，JING Hongwen，et al. Large deformation theory of rheology and structural instability of the surrounding rock in deep mining roadway[J]. Journal of China Coal Society，2020，45(3)：911–926.(in Chinese))
[4] 何满潮. 深部软岩工程的研究进展与挑战[J]. 煤炭学报，2014，39(8)：1 409–1 417.(HE Manchao. Progress and challenges of soft rock engineering in depth[J]. Journal of China Coal Society，2014，39(8)：1 409–1 417.(in Chinese))
[5] 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.(in Chinese))
[6] 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 Hupu，LIN Jian，WU Yongzheng. High pretensioned stress and intensive cable bolting technology set in full section and application in entry affected by dynamic pressure[J]. Journal of China Coal Society，2009，34(9)：1 153–1 159.(in Chinese))
[7] 靖洪文，付国彬，郭志宏. 深井巷道围岩松动圈影响因素实测分析及控制技术研究[J]. 岩石力学与工程学报，1999，18(1)：71–75. (JIN Hongwen，FU Guobin，GUO Zhihong. Measurement and analysis of influential factors of broken zone of deep roadways and study on its control technique[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(1)：71–75.(in Chinese))
[8] 张农，高明仕. 煤巷高强预应力锚杆支护技术与应用[J]. 中国矿业大学学报，2004，33(5)：34–37.(ZHANG Nong，GAO Mingshi. High-strength and pretension support of coal roadway and its application[J]. Journal of China University of Mining and Technology，2004，33(5)：34–37.(in Chinese))
[9] 张农，韩昌良，谢正正. 煤巷连续梁控顶理论与高效支护技术[J]. 采矿与岩层控制工程学报，2019，1(2)：48–55.(ZHANG Nong，HAN Changliang，XIE Zhengzheng. Theory of continuous beam control and high efficiency supporting technology in coal roadway[J]. Journal of Mining and Strata Control Engineering，2019，1(2)：48–55.(in Chinese))
[10] 郑西贵. 煤矿巷道锚杆锚索托锚力演化机理及围岩控制技术[博士学位论文][D]. 徐州：中国矿业大学，2013.(ZHENG Xigui. Evolution mechanism of coalmine roadway supporting anchoring force of bolt and cable and surrounding rock control technology[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2013.(in Chinese))
[11] 李德忠，夏新川，韩家根. 深井回采巷道锚网、锚索联合支护技术[J]. 矿山压力与顶板管理，2003，(4)：33–34.(LI Dezhong，XIA Xinchuan，HAN Jiagen. Combined support technology of bolt mesh and anchor cable in deep mining roadway[J]. Ground Pressure and Strata Control，2003，(4)：33–34.(in Chinese))
[12] 王金华. 全煤巷道锚杆锚索联合支护机理与效果分析[J]. 煤炭学报，2012，37(1)：1–7.(WANG Jinhua. Analysis on mechanism and effect of rock bolts and cables in gateroad with coal seam as roof[J]. Journal of China Coal Society，2012，37(1)：1–7.(in Chinese))
[13] 李桂臣，张农，刘召辉，等. 煤巷预应力桁架锚杆支护技术[J]. 采矿与安全工程学报，2007，24(2)：150–154.(LI Guichen，ZHANG Nong，LIU Zhaohui，et al. Analysis on mechanism and effect of rock bolts and cables in gateroad with coal seam as roof[J]. Journal of China Coal Society，2007，24(2)：150–154.(in Chinese))
[14] 严红. 特厚煤层巷道顶板变形机理与控制技术[博士学位论文][D]. 北京：中国矿业大学(北京)，2013.(YAN Hong. Mechanism of roof deformation and its control in roadways with extra thick coal seam[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology(Beijing)，2013.(in Chinese))
[15] 张农，李学华，高明仕. 迎采动工作面沿空掘巷预拉力支护及工程应用[J]. 岩石力学与工程学报，2004，23(12)：2 100–2 105. (ZHANG Nong，LI Xuehua，GAO Mingshi. Pretensioned support of roadway driven along next gob and heading adajacent advancing coal face and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(12)：2 100–2 105.(in Chinese))
[16] 潘锐，程桦，王雷，等. 深部巷道锚注支护效果及组合式高强锚注控制技术研究[J]. 采矿与安全工程学报，2020，37(3)：461–472.(PAN Rui，CHENG Hua，WANG Lei，et al. Analysis of the bolt-grouting support in deep roadway and combined high-strength bolt-grouting control technology[J]. Journal of Mining and Safety Engineering，2020，37(3)：461–472.(in Chinese))
[17] 潘锐，王琦，王雷，等. 深井巷道锚注补强力学效应及支护参数研究[J]. 采矿与安全工程学报，2018，35(2)：267–275.(PAN Rui，WANG Qi，WANG Lei，et al. Research on mechanical effect and parameters of bolt-grouting reinforcement for deep roadway[J]. Journal of Mining and Safety Engineering，2018，35(2)：267–275.(in Chinese))
[18] 谢正正，张农，王朋，等. 长期载荷作用下柔性锚杆力学特性研究及工程应用[J]. 煤炭学报，2020，45(9)：3 096–3 106.(XIE Zhengzheng，ZHANG Nong，WANG Peng，et al. Mechanical characteristics and field application of flexible bolt under long-term load[J]. Journal of China Coal Society，2020，45(9)：3 096–3 106.(in Chinese))
[19] 祁和刚，于健浩. 深部高应力区段煤柱留设合理性及综合卸荷技术[J]. 煤炭学报，2018，43(12)：3 257–3 264.(QI Hegang，YU Jianhao. Rationality and comprehensive unloading technology of deep high stress section coal pillars[J]. Journal of China Coal Society，2018，43(12)：3 257–3 264.(in Chinese))
[20] 吴拥政，吴建星，王峰. 巷道掘支锚连续平行作业机理及其应用[J]. 煤炭科学技术，2016，44(6)：39–44.(WU Yongzheng，WU Jianxing，WANG Feng. Mechanism and application of excavation，support and bolting continuous parallel operation in roadway[J]. Coal Science and Technology，2016，44(6)：39–44.(in Chinese))
[21] 吴淼，李瑞，王鹏江，等. 基于数字孪生的综掘巷道并行工艺技术初步研究[J]. 煤炭学报，2020，45(增1)：506–513.(WU Miao，LI Rui，WANG Pengjiang，et al. Preliminary study on the parallel technology of fully mechanized roadway based on digital twin[J]. Coal Science and Technology，2020，45(Supp.1)：506–513.(in Chinese))
[22] GAO F Q. Simulation of failure mechanisms around underground coal mine openings using discrete element modeling[Ph. D. Thesis][D]. Vancouver：Simon Fraser University，2013.