Patterns of zonal disintegration and structural control of surrounding rock of deep roadway with different sections

XU Lei; GUO Shuai; Davide Elmo; LIU Honglin; HONG Zijie; XIAO Tongqiang

doi:10.11779/CJGE20220375

Volume 45 Issue 4

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Chinese Journal of Geotechnical Engineering > 2023 > 45(4): 720-729. > DOI: 10.11779/CJGE20220375

XU Lei, GUO Shuai, Davide Elmo, LIU Honglin, HONG Zijie, XIAO Tongqiang. Patterns of zonal disintegration and structural control of surrounding rock of deep roadway with different sections[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(4): 720-729. DOI: 10.11779/CJGE20220375

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Patterns of zonal disintegration and structural control of surrounding rock of deep roadway with different sections

1.
School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China
2.
Henan Key Laboratory of Underground Engineering and Disaster Prevention (Henan Polytechnic University), Jiaozuo 454000, China
3.
The Norman B. Keevil Institute of Mining Engineering, University of British Columbia, Vancouver V6T 1Z4, Canada
4.
College of Geology and Mines Engineering, Xinjiang University, Urumqi 830046, China
5.
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China

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Received Date: March 30, 2022
Available Online: April 16, 2023

Graphical Abstract

Abstract

Abstract

The patterns of zonal disintegration and stability structures of surrounding rock of the equivalent excavation rectangular, straight wall semi-circle arch and circular sections under isotropic isostatic conditions are studied through the theoretical analysis, field measurement and simulation analysis. The conclusions are drawn as follows: the patterns of zonal disintegration of three sections are different. The zonal disintegration of rectangular section exhibits ""distribution; and the straight wall semicircle arch and circular section show "" and "petal" shaped distributions. The displacement characteristics of three sections are similar; the shallow part of the displacement isoline has an upright "egg shell" shape and the deep part has a "bowl" shape. The abutment pressure decreases at the main fracture surface, concentrates at the head of the main fracture surface in the outermost layer, and increases at the complete rock layer between fracture surfaces, showing a zoning concentration. The abutment pressure propagates outward with the characteristics of "wave trough-wave crest-wave trough" that gradually increases. The chord length of an ideal square fracture surface has a relationship of ${a_{n{\text{ + 1}}}} = \sqrt {\text{2}} {a_n}$ (n=1, 2, 3, 4). After the zonal disintegration of the shallow surrounding rock is formed, it is equivalent to the pseudo-excavation of deep surrounding rock. Three sections have the bearing structures of multi-layer "" shaped surrounding rock. The principle of roadway stability is to promote the interdependence and co-bearing of multi-layer bearing structures. The specific measures include encrypted, thickened, lengthened bolt (cable)supporting structures. The relationship between shallow and deep multi-layer bearing structures is established. The stable anchor solid is formed in the shallow part to promote the stability of the surrounding rock in the deep part. The precise grouting should be employed to repair the main fracture surface of the surrounding rock and to limit the slip of the main fracture surface.
- zonal disintegration,
- surrounding rock structure,
- deep roadway,
- fracture pattern

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References (15)

References

[1]	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. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202003006.htm 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) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202003006.htm
[2]	王明洋, 陈昊祥, 李杰, 等. 深部巷道分区破裂化计算理论与实测对比研究[J]. 岩石力学与工程学报, 2018, 37(10): 2209-2218. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201810001.htm WANG Mingyang, CHEN Haoxiang, LI Jie, et al. Theoretical research on zonal disintegration of rock masses around deep tunnels and comparisons with in situ observations[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(10): 2209-2218. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201810001.htm
[3]	王猛, 牛誉贺, 于永江, 等. 主应力演化影响下的深部巷道围岩变形破坏特征试验研究[J]. 岩土工程学报, 2016, 38(2): 237-244. doi: 10.11779/CJGE201602006 WANG Meng, NIU Yuhe, YU Yongjiang, et al. Experimental research on characteristics of deformation and failure of surrounding rock of roadway in deep mine under influence of principal stress evolution[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(2): 237-244. (in Chinese) doi: 10.11779/CJGE201602006
[4]	ADAMS A J, JAGER G R. Petroscopic observations of rock fracturing ahead of stope faces in deep-level gold mines[J]. Journal of the Southern African Institute of Mining and Metallurgy, 1980, 80(6): 204-209.
[5]	SHEMYAKIN E I, FISENKO G L, KURLENYA M V, et al. Zonal disintegration of rocks around underground workingsPart Ⅱ: rock fracture simulated in equivalent materials[J]. Soviet Mining, 1986, 22(4): 223-232. doi: 10.1007/BF02500845
[6]	李世平. 权台矿3109综采区煤巷锚杆试验观测报告: 兼论煤巷锚杆特点与锚杆参数选择的新观点[J]. 中国矿业学院学报, 1979, 8(3): 22-61. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD197903001.htm LI Shiping. Observation of coal roadway roof bolt tests at 3109 mechanized section at Quantai Mine: characterstics of coal roadway roof bolts and new viewpoints on the choice of roof bolt parameters[J]. Journal of China University of Mining & Technology, 1979, 8(3): 22-61. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD197903001.htm
[7]	贺永年. 软岩巷道围岩松动带及其状态分析[J]. 煤炭学报, 1991, 16(2): 63-70. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB199102009.htm HE Yongnian. Analysis of loose zone around the roadway in soft rock[J]. Journl of China Coal Society, 1991, 16(2): 63-70. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB199102009.htm
[8]	安瓦尔∙ 恰夫晒夫. 深部围岩的塑性变形及分区破裂化现象[Z]. 北京: 2008. DR Aleksandr. Plastic deformation and zonal disintegration of deep surrounding rock[Z]. Beijing: 2008. (in Chinese)
[9]	李术才, 王汉鹏, 钱七虎, 等. 深部巷道围岩分区破裂化现象现场监测研究[J]. 岩石力学与工程学报, 2008, 27(8): 1545-1553. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200808005.htm LI Shucai, WANG Hanpeng, QIAN Qihu, et al. In-situ monitoring research on zonal disintegration of surrounding rock mass in deep mine roadways[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(8): 1545-1553. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200808005.htm
[10]	张强勇, 张绪涛, 向文, 等. 不同洞形与加载方式对深部岩体分区破裂影响的模型试验研究[J]. 岩石力学与工程学报, 2013, 32(8): 1564-1571. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201308008.htm ZHANG Qiangyong, ZHANG Xutao, XIANG Wen, et al. Model test study of zonal disintegration in deep rock mass under different cavern shapes and loading conditions[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(8): 1564-1571. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201308008.htm
[11]	袁亮, 顾金才, 薛俊华, 等. 深部围岩分区破裂化模型试验研究[J]. 煤炭学报, 2014, 39(6): 987-993. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201406001.htm YUAN Liang, GU Jincai, XUE Junhua, et al. Model test research on the zonal disintegration in deep rock[J]. Journal of China Coal Society, 2014, 39(6): 987-993. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201406001.htm
[12]	陈建功, 周陶陶, 张永兴. 深部洞室围岩分区破裂化的冲击破坏机制研究[J]. 岩土力学, 2011, 32(9): 2629-2634, 2644. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201109013.htm CHEN Jiangong, ZHOU Taotao, ZHANG Yongxing. Shock failure mechanism of zonal disintegration within surrounding rock in deep chamber[J]. Rock and Soil Mechanics, 2011, 32(9): 2629-2634, 2644. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201109013.htm
[13]	唐春安, 张永彬. 岩体间隔破裂机制及演化规律初探[J]. 岩石力学与工程学报, 2008, 27(7): 1362-1369. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200807010.htm TANG Chun'an, ZHANG Yongbin. Discussion on mechanism and evolution laws of fracture spacing in rock mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(7): 1362-1369. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200807010.htm
[14]	高富强, 康红普, 林健. 深部巷道围岩分区破裂化数值模拟[J]. 煤炭学报, 2010, 35(1): 21-25. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201001006.htm GAO Fuqiang, KANG Hongpu, LIN Jian. Numerical simulation of zonal distrigation of surrounding rock mass in deep mine roadways[J]. Journal of China Coal Society, 2010, 35(1): 21-25. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201001006.htm
[15]	宫凤强, 罗勇, 刘冬桥. 深部直墙拱形隧洞围岩板裂破坏的模拟试验研究[J]. 岩土工程学报, 2019, 41(6): 1091-1100. doi: 10.11779/CJGE201906013 GONG Fengqiang, LUO Yong, LIU Dongqiao. Simulation tests on spalling failure in deep straight-wall-top-arch tunnels[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(6): 1091-1100. (in Chinese) doi: 10.11779/CJGE201906013

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