Stress distribution and support optimization of the surrounding rock of deep rectangular roadways

被引：0
|
作者：
Yang N. [1 ,2 ]
Zhao M. [1 ,2 ]
Huang Y. [3 ]
机构：
[1] School of Architecture and Construction, Jiangsu Vocational Institute of Architectural Technology, Xuzhou
[2] Jiangsu Collaborative Innovation Center for Building Energy Saving and Construction Technology, Xuzhou
[3] State key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology(Beijing), Beijing
来源：
Journal of Mining and Strata Control Engineering | 2023年 / 5卷 / 06期
关键词：
complex variable theory; numerical simulation; rectangular roadway; support optimization;
D O I：
10.13532/j.jmsce.cn10-1638/td.2023.06.001
中图分类号：
学科分类号：
摘要：
The rectangular cross-sectional structure of roadways is prone to stress concentration，and it is therefore necessary to analyze the roadway stability and propose targeted support optimization. A stress analysis model of the surrounding rock in rectangular roadway，in the 5302 working face in Zhaolou Coal Mine，was established in this study based on the complex function theory. The stress distribution of the surrounding rock with different buried depth，width height ratio，and rock mechanical parameters was quantified. The optimization scheme of reinforcing roof by bolt and reinforcing roadway walls by grouting was proposed，and FLAC3D numerical simulation verification and field tests were carried out. The results showed that the optimized scheme could effectively improve the mechanical properties of the broken surrounding rock and increase the self-supporting capacity of the roadway surrounding rock. Compared with the original scheme，the control effect of the proposed optimization scheme was more significant with the average deformation of the roadway walls reducing by 32.9%. © 2023 Editorial Office of Journal of Mining and Strata Control Engineering. All rights reserved.
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  • [1] DONG Zhaoxing, LIU Gang, Tunnel engineering, (2013)
  • [2] ZHAO Haoliang, WANG Song, ZHANG Zhiqiang, Et al., Surrounding rock movement of layered double flexible formwork wall retaining roadway under extra thickness coal seam and support optimization[J], Journal of Mining and Strata Control Engineering, 4, 5, (2022)
  • [3] XIAO Peng, YU Haiyang, WANG Dong, Et al., Technology and application of active support replacing passive support in advance section of backfill mining[J], Journal of Shandong University of Science and Technology(Natural Science), 41, 3, pp. 41-49, (2022)
  • [4] CHEN Yanguang, LU Shiliang, Surrounding rock control of coal roadway in China, pp. 226-228, (1994)
  • [5] JIANG Chengyu, LIU Yong, HAN Lianchang, Et al., Deformation chavacteri-stics and support technology of high-stress soft rock roadway in deep mine[J], Coal Engineering, 53, 1, pp. 47-51, (2021)
  • [6] LIU Husheng, LUAN Hengjie, QIAO Jinlin, Et al., Failure mechanism and strengthening support technology of gangue-containing coal roadway sidewall, Journal of Mining and Strata Control Engineering, 4, 3, (2022)
  • [7] HUO H, BOBET A, FERNNDEZ G, Et al., Analytical solution for deep rectangular structures subjected to far -field shear stresses[J], Tunnelling and Underground Space Technology Incorporating Trench-less Technology Research, 21, 6, pp. 613-625, (2006)
  • [8] KANG Hongpu, Temporal scale analysis on coal mining and strata control technologies, Journal of Mining and Strata Control Engineering, 3, 1, (2021)
  • [9] ZHANG Zhiguo, HUANG Maosong, XI Xiaoguang, Et al., Complex variable solutions for soil and liner deformation due to tunneling in clays[J], International Journal of Geomechanics, 18, 7, pp. 0401807401-0401807419, (2018)
  • [10] MUSKHELISHVILI N I., Some basic problems of the mathematical theory of elasticity[M], (1954)
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