›› 2013, Vol. 34 ›› Issue (10): 2847-2856.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Model test study of surrounding rock deformation and failure mechanism of deep roadway with thick top coal

LI Wei-teng1, 2, LI Shu-cai1, WANG Qi1, 2, 3, RUAN Guo-qiang3, ZUO Jin-zhong3, LIU Wen-jiang3, WANG De-chao1, WANG Hong-tao1   

  1. 1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 2. State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; 3. Yankuang Group Company Limited, Zoucheng, Shandong 273500, China
  • Received:2012-09-21 Online:2013-10-09 Published:2013-10-18

PDF (Chinese)

1818

Abstract: In order to research the surrounding rock deformation and failure mechanism of deep thick top coal roadway, taking Zhaolou coal mine in Juye mining area as engineering background, a large scale model test is carried out, the stress and displacement evolution laws of surrounding rock supported by pressure relief anchor cable box beam supporting programs are researched. And the results show: the vertical stress release is more intense in roof and floor of the roadway than that in the side wall, while the horizontal stress is the opposite; central of roadway roof is the main position of vertical stress release. By being compared with field test results, three main deformation and failure characters of the surrounding rock of deep thick top coal roadway are summarized: the deformation and failure of roof is more serious than that of side wall and floor; deformation and failure of roadway roof occurrs mainly in the coal below coal-rock interface; central of roadway roof is the key position of the deformation and failure. The corresponding mechanism is analyzed: the factors such as soft and broken features of roof coal, its poor self-supporting ability, vertical stress releasing more severe in roof and its central, poor force state of rectangle roadway, cause low radial stress of surrounding rock in roof, serve bulking deformation, bending deformation and roof separation, and worsen the roof force structure, finally, they lead to controlling trouble of roadway roof.

Key words: roadway with thick top coal, pressure relief anchor cable box beam, model test, deformation and failure, mechanism, key position

CLC Number: 

  • TD 353
[1] SUN Rui, YANG Feng, YANG Jun-sheng, ZHAO Yi-ding, ZHENG Xiang-cou, LUO Jing-jing, YAO Jie, . Investigation of upper bound adaptive finite element method based on second-order cone programming and higher-order element [J]. Rock and Soil Mechanics, 2020, 41(2): 687-694.
[2] LI Jian, CHEN Shan-xiong, YU Fei, JIANG Ling-fa, DAI Zhang-jun. Discussion on mechanism of reinforcing high and steep slope with prestressed anchor cable [J]. Rock and Soil Mechanics, 2020, 41(2): 707-713.
[3] WANG Guo-hui, CHEN Wen-hua, NIE Qing-ke, CHEN Jun-hong, FAN Hui-hong, ZHANG Chuan, . Impacts of pit excavation on foundation piles in deep silty soil by centrifugal model tests [J]. Rock and Soil Mechanics, 2020, 41(2): 399-407.
[4] SHI Li, HU Dong-dong, CAI Yuan-qiang, PAN Xiao-dong, SUN Hong-lei, . Preliminary study of real-time pore water pressure response and reinforcement mechanism of air-booster vacuum preloading treated dredged slurry [J]. Rock and Soil Mechanics, 2020, 41(1): 185-193.
[5] YU Li, LÜ Cheng, DUAN Ru-yu, WANG Ming-nian, . Upper bound limit analysis of three-dimensional collapse mechanism of shallow buried soil tunnel under pore pressure based on nonlinear Mohr-Coulomb criterion [J]. Rock and Soil Mechanics, 2020, 41(1): 194-204.
[6] LOU Ye, ZHANG Guang-qing. Experimental analysis of fracturing fluid viscosity on cyclic hydraulic fracturing [J]. Rock and Soil Mechanics, 2019, 40(S1): 109-118.
[7] YU Yi-fan, WANG Ping, WANG Hui-juan, XU Shu-ya, GUO Hai-tao, . Physical model test of seismic dynamic response to accumulative landslide [J]. Rock and Soil Mechanics, 2019, 40(S1): 172-180.
[8] HE Fa-guo, LÜ Ran, SU Hua-zhong, ZHOU Jin, ZHANG Jing-ke, WANG Nan, . Durability test and reinforced mechanism on adding SH materials into soil of archaeological sites [J]. Rock and Soil Mechanics, 2019, 40(S1): 297-307.
[9] YAN Guo-qiang, YIN Yue-ping, HUANG Bo-lin, ZHANG Zhi-hua, DAI Zhen-wei, . Formation mechanism and deformation characteristics of Jinjiling landslide in Wushan, Three Gorges Reservoir region [J]. Rock and Soil Mechanics, 2019, 40(S1): 329-340.
[10] LEI Hua-yang, HU Yao, LEI Shuang-hua, QI Zi-yang, XU Ying-gang, . Analysis of microstructure characteristics of air-booster vacuum preloading for ultra-soft dredger fills [J]. Rock and Soil Mechanics, 2019, 40(S1): 32-40.
[11] ZHU Lei, HUANG Run-qiu, CHEN Guo-qing, YAN Ming, . Mechanical model and evolution of fracture system with a gentle dip angle in rock slope [J]. Rock and Soil Mechanics, 2019, 40(S1): 53-62.
[12] DING Chang-dong, ZHANG Yang, YANG Xiang-tong, HU Da-wei, ZHOU Hui, LU Jing-jing, . Permeability evolution of tight sandstone under high confining pressure and high pore pressure and its microscopic mechanism [J]. Rock and Soil Mechanics, 2019, 40(9): 3300-3308.
[13] CHEN Yu-long, UCHIMURA Taro, . Early warning of rainfall-induced landslides based on elastic wave velocity [J]. Rock and Soil Mechanics, 2019, 40(9): 3373-3386.
[14] WANG Qin-ke, MA Jian-lin, CHEN Wen-long, YANG Yan-xin, HU Zhong-bo, . Centrifugal model tests and calculation method of uplift bearing capacity of rock-socketed pedestal pile overburden soil [J]. Rock and Soil Mechanics, 2019, 40(9): 3405-3415.
[15] LU Liang, SHI Tong-hui, YANG Dong, . Control effect of uneven settlement of subgrade by composited method of replacement load shedding and reinforced embankment [J]. Rock and Soil Mechanics, 2019, 40(9): 3474-3482.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LI Ying-yong，ZHANG Ding-li，ZHANG Hong-bo，SONG Xiu-guang. Research on failure mechanism and effects of prestressed anchor cables for reinforcing slopes[J]. , 2010, 31(1): 144 -150 .
[2] LIANG Jian-wei, FANG Ying-guang, GU Ren-guo. Analysis of microelectric field effect of seepage in tiny-particle clay[J]. , 2010, 31(10): 3043 -3050 .
[3] WANG Li-yan，JIANG Peng-ming，LIU Han-long. Mechanism analysis of residual liquefied deformation of breakwater during earthquake[J]. , 2010, 31(11): 3556 -3562 .
[4] LI Xiu-zhen，WANG Cheng-hua，DENG Hong-yan. A comparison of distance and Fisher discrimination methods applied to identifying potential landslides[J]. , 2011, 32(1): 186 -192 .
[5] KONG Xiang-xing, XIA Cai-chu, QIU Yu-liang, ZHANG Li-ying, GONG Jian-wu. Study of construction mechanical behavior of parallel-small spacing metro tunnels excavated by shield method and cross diaphragm (CRD) method in loess region[J]. , 2011, 32(2): 516 -524 .
[6] WANG Zhen-hong，ZHU Yue-ming，WU Quan-huai，ZHANG Yu-hui. Thermal parameters of concrete by test and back analysis[J]. , 2009, 30(6): 1821 -1825 .
[7] JIANG Xue-liang ，YANG Hui ，CAO Ping. FLAC3D analysis of interaction between goaf and opencut mining slope with 3D geological model using SURPAC[J]. , 2011, 32(4): 1234 -1240 .
[8] CHEN Li-hua , LIN Zhi , LI Xing-ping. Study of efficacy of systematic anchor bolts in highway tunnels[J]. , 2011, 32(6): 1843 -1848 .
[9] WANG Song-he，QI Ji-lin. Experimental study of relaxation characteristics of warm permafrost[J]. , 2012, 33(6): 1660 -1666 .
[10] WANG Yu ，JIA Zhi-gang ，LI Xiao ，WANG Can ，YU Hong-ming . Fuzzy random reliability analysis of slope based on fuzzy point estimate method[J]. , 2012, 33(6): 1795 -1800 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd