Evolution law of surrounding rock bearing circle and support technology of deep roadway

SHEN Shibao; SONG Song; MENG Shengshi; WU Yancheng; ZHENG Yining

Safety in Coal Mines > 2023 > 54(3): 131-139.

SHEN Shibao, SONG Song, MENG Shengshi, WU Yancheng, ZHENG Yining. Evolution law of surrounding rock bearing circle and support technology of deep roadway[J]. Safety in Coal Mines, 2023, 54(3): 131-139.

Citation:

PDF (5879 KB)

Evolution law of surrounding rock bearing circle and support technology of deep roadway

More Information

Published Date: March 19, 2023

Graphical Abstract

Abstract

Abstract

Taking Guotun Coal Mine -670 auxiliary horizontal track roadway as the engineering background, the stress change of roadway surrounding rock is analyzed through the mechanical model of bearing circle, and the stress change of roadway surrounding rock under different driving distances, lateral pressure coefficients and vertical stresses is studied by FLAC^3D software. The resales show that as the roadway expands to the deep, the bearing ring also shifts to the deep and the thickness increases, the stress of the roof and floor of the roadway changes greatly than that of the two sides, and the shape of the bearing ring changes from circle to ellipse; the control effect of bolts and anchor cables with different lengths on the bearing ring is analyzed; the bolts mainly control the inner boundary of the bearing ring to reduce the damage of the shallow part of the roadway surrounding rock, and the anchor cables mainly control the outer boundary of the bearing ring and affect the stress distribution of roadway surrounding rock. According to the bearing ring theory and the control effect of bolt and anchor cable on the bearing ring, the combined support scheme of “bolt net shotcrete + bolt + anchor cable” is proposed. The application show that the combined support technology of “bolt net shotcrete + bolt + anchor cable” has great technical advantages for the control of surrounding rock in deep roadway.
- deep roadway,
- bearing circle,
- stress variation,
- numerical simulation,
- combined support

FullText(HTML)

References (22)

References

[1]	周辉，渠成堃，王竹春，等．深井巷道掘进围岩演化特征模拟与扰动应力场分析[J]．岩石力学与工程学报，2017，36（8）：1821－1831. ZHOU Hui, QU Chengkun, WANG Zhuchun, et al. Simulating the variation of surrounding rock and analyzing the disturbed stress field during excavation of deep mine roadway[J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36（8）: 1821-1831.
[2]	王康健，鲁海峰，张元．不同地应力环境下巷道破坏变形特征数值模拟研究[J]．煤炭技术，2021，40（9）：5－10. WANG Kangjian, LU Haifeng, ZHANG Yuan. Numerical simulation of roadway failure and deformation characteristics under different in-situ stress environment[J]. Coal Technology, 2021, 40（9）: 5-10.
[3]	钱志良．变厚煤层沿空留巷变形破坏原因及规律[J]．煤矿安全，2019，50（4）：181－185. QIAN Zhiliang. Causes and laws of deformation and failure of roadway along gob in thickened coal seam[J]. Safety in Coal Mines, 2019, 50（4）: 181-185.
[4]	张立新，杨贤江．吕家坨煤矿巷道变形机理及其控制方法[J]．煤矿安全，2010，41（3）：95－96. ZHANG Lixin, YANG Xianjiang. Study on roadway deformation laws and control methods in Lvjiatuo coal mine[J]. Safety in Coal Mines, 2010, 41（3）: 95-96.
[5]	许振鲁，平立芬．深部锚喷巷道全断面注浆加固技术的研究与应用[J]．煤矿机械，2018，39（12）：124－127. XU Zhenlu, PING Lifen. Research and application of full section grouting reinforcement technology in deep anchoring roadway[J]. Coal Mine Machinery, 2018, 39（12）: 124-127.
[6]	郭军杰，孙光中．锚喷支护巷道围岩承载结构研究[J]．矿业安全与环保，2010，37（3）：38－40. GUO Junjie, SUN Guangzhong. Study on load-beating structure of surrounding rock of roadway supported by rock-bolting and shotcreting[J]. Mining Safety & Environmental Protection, 2010, 37（3）: 38-40.
[7]	王政行，柏建彪，马长乐，等．余吾煤业轨道大巷破碎围岩控制技术[J]．煤矿安全，2012，43（4）：49－52. WANG Zhenghang, BAI Jianbiao, MA Changle, et al. Control technology for broken surrounding rock in main roadway of Yuwu coal industry[J]. Safety in Coal Mines, 2012, 43（4）: 49-52.
[8]	张斌川．基于能量平衡理论的深部软岩巷道支护技术研究[D]．北京：中国矿业大学（北京），2015.
[9]	高明仕，张农，窦林名，等．基于能量平衡理论的冲击矿压巷道支护参数研究[J]．中国矿业大学学报，2007（4）：426－430. GAO Mingshi, ZHANG Nong, DOU Linming, et al. Study of roadway support parameters subjected to rock burst based on energy balance theory[J]. Journal of China University of Mining & Technology, 2007（4）: 426-430.
[10]	李占金，何满潮，唐强达．高水平应力条件下锚网索耦合支护机理分析与应用[J]．中国矿业，2008（7）：65－68. LI Zhanjin, HE Manchao, TANG Qiangda. Analysis and application of bolt and mesh reinforcement and anchor wire coupling support mechanism under high horizontal site-stress[J]. China Mining Magazine, 2008（7）: 65-68.
[11]	孙晓明，何满潮，杨晓杰．深部软岩巷道锚网索耦合支护非线性设计方法研究[J]．岩土力学，2006（7）：1061－1065. SUN Xiaoming, HE Manchao, YANG Xiaojie. Research on noninear mechanics design method of bolt-net-anchor coupling support for deep soft rock tunnel[J]. Rock and Soil Mechanics, 2006（7）: 1061-1065.
[12]	董海蝉，孙晓明，何满潮．锚网索耦合支护技术在南屯煤矿综放切眼支护中的应用[J]．建井技术，2003（1）：4－8. DONG Haichan, SUN Xiaoming, HE Manchao. Application of bolt, steel mesh and anchor combined support to open-off cut of fully mechanized longwall mining face with top coal caving technology[J]. Mine Construction Technology, 2003（1）: 4-8.
[13]	康红普．巷道围岩的承载圈分析[J]．岩土力学，1996（4）：84－89. KANG Hongpu. Analysis on load-bearing ring in surrounding rock of roadway[J]. Rock and Soil Mechanics, 1996（4）: 84-89.
[14]	于凤海，赵同彬，胡善超，等．大松动圈围岩锚网索联合支护参数确定方法探讨[J]．岩土力学，2016，37（7）：2021－2027. YU Fenghai, ZHAO Tongbin, HU Shanchao, et al. Discussion on determination method of anchor-net-cable coupling support parameters of surrounding rock in a large broken zone[J]. Rock and Soil Mechanics, 2016, 37（7）: 2021-2027.
[15]	李宪伟，王连国，侯化强，等．深井大断面软岩巷道数值模拟研究及注浆支护实践[J]．矿业安全与环保, 2012，39（1）：46-48.
[16]	郭平，沈大富．深部巷道支护方案优化设计及数值模拟研究[J]．矿业安全与环保，2021，48（4）：87－91. GUO Ping, SHEN Dafu. Optimization design and numerical simulation of support scheme for deep mine roadway[J]. Mining Safety & Environmental Protection, 2021, 48（4）: 87-91.
[17]	牛建春，高家平，张胜军，等．深部软岩巷道围岩稳定性综合分析及支护实践[J]．矿业安全与环保，2015， 42（2）：68－71. NIU Jianchun, GAO Jiaping, ZHANG Shengjun, et al. Comprehensive analysis on surrounding rock stability of deep soft rock roadway and support practice[J]. Mining Safety & Environmental Protection, 2015, 42（2）: 68-71.
[18]	魏夕合，王平，翟潘，等．深部软岩巷道失稳原因与高强全锚注支护试验[J]．煤矿安全，2018，49（11）：69－72. WEI Xihe, WANG Ping, ZHAI Pan, et al. Reason of instability of deep soft rock roadway and test of high strength and full anchor support[J]. Safety in Coal Mines, 2018, 49（11）: 69-72.
[19]	李树清．深部煤巷围岩控制内、外承载结构耦合稳定原理的研究[D]．长沙：中南大学，2008.
[20]	朱学军，杜兵，赵方敏．深部高应力巷道矿压显现与控制[J]．矿山压力与顶板管理，2000（3）：64－66. ZHU Xuejun, DU Bing, ZHAO Fangmin. The behaviour of ground pressure and its controlling method in deep and high stress roadway[J]. Ground Pressure and Strata Control, 2000（3）: 64-66.
[21]	周宏伟，谢和平，左建平．深部高地应力下岩石力学行为研究进展[J]．力学进展，2005（1）：91－99. ZHOU Hongwei, XIE Heping, ZUO Jianping. Developments in researches on mechanical behaviors of rocks under the condition of high ground pressure in the depths[J]. Advances in Mechanics, 2005（1）: 91-99.
[22]	苏永华，梁斌，刘少峰，等．基于组合拱理论隧道锚喷支护稳定可靠度求解的一维积分方法[J]．岩石力学与工程学报，2015，34（12）：2446－2454. SU Yonghua, LIANG Bin, LIU Shaofeng, et al. One-dimensional integral method of reliability analysis for structural stability of tunnel lining consisting of rock bolts and shotcrete based on build-up arch theory[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34（12）: 2446-2454.

[1]	MA Wenwei. Study on surrounding rock control technology of roadway in large mining height hard roof face[J]. Safety in Coal Mines, 2022, 53(8): 94-103.
[2]	LYU Weibin, LU Kai, REN Zhuoxin, LIAN Qiang. Study on deformation law of surrounding rock of gob side-entry retaining by roof cutting and pressure relief[J]. Safety in Coal Mines, 2022, 53(6): 212-217.
[3]	DENG Xiaogang, LUAN Hengjie, LIU Jianrong. Numerical study on surrounding rock control effect of gob-side entry retaining by roof cutting and pressure relief[J]. Safety in Coal Mines, 2021, 52(9): 239-244.
[4]	YUN Ming, ZHENG Hongyun, LI Tingchun, ZHAO Renle, WU Shanyuan, ZHU Qingwen. Support design and mine pressure measurement of 1102 working face in Qiuji Coal Mine[J]. Safety in Coal Mines, 2021, 52(3): 127-132,136.
[5]	LIU Yiping, DONG Changwei, GUO Biao. Laws of Mine Pressure and Surrounding Rock Control of Roof Cutting Non-pillar Mining Method in Qidong Mine[J]. Safety in Coal Mines, 2019, 50(1): 165-169.
[6]	YANG Cunzhi. Stability Analysis and Support Technology of Surrounding Rock of Coal Roadway with Composite Roof[J]. Safety in Coal Mines, 2018, 49(1): 218-221.
[7]	ZHAO Chunguang, LI Nannan, WANG Chuangye. Numerical Simulation of Stope Tendency Mine Pressure Laws Under Different Inclination of Coal and Rock[J]. Safety in Coal Mines, 2014, 45(10): 198-200.
[8]	YIN Da-fa. Surrounding Rock Power Disaster Monitoring and Warning System in Coal Mine[J]. Safety in Coal Mines, 2012, 43(12): 105-107.
[9]	ZHANG Shuan-cai. 强矿压小煤柱分层掘进巷道高强联合支护技术[J]. Safety in Coal Mines, 2012, 43(10): 86-88.
[10]	MA Chang-le, GENG Yao-qiang, YUAN Peng-fei. Roadway Strength Bolting Supporting Technology under High Stress and Soft Rock Roof of Yuwu Coal Industry[J]. Safety in Coal Mines, 2012, 43(4): 45-48.

Cited By

Get Citation

PDF

XML

Article views (17) PDF downloads (39)

Turn off MathJax

Article Contents

Abstract

References

Evolution law of surrounding rock bearing circle and support technology of deep roadway

Abstract

References

Related Articles

Catalog

Evolution law of surrounding rock bearing circle and support technology of deep roadway

Abstract

References

Related Articles

Catalog

Export File

Citation

Format

Content