›› 2010, Vol. 31 ›› Issue (6): 1977-1982.

• Numerical Analysis • Previous Articles     Next Articles

Research of reasons and controlling for floor burst in coal mine roadway

XU Xue-feng1, 2, 3，DOU Lin-ming1, 2，LIU Jun4，CUI Xiao-hui4，ZHANG Yin-liang4，YAO Xi-yuan4   

  1. 1. State Key Laboratory of Coal Resources and Mine Safety, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China; 2. School of Mines, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China; 3. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China; 4. Yuejin Coal Mine of Yima Coal Mining Group, Yima, Henan 472300, China
  • Received:2009-10-23 Online:2010-06-10 Published:2010-06-25

PDF (Chinese)

2439

Abstract:

The horizontal stress in the floor of roadway plays an important role in floor burst. According to the theory and characteristics of floor burst, a mechanical model is set up; and the dangerous coefficient of floor burst is also initially given. The research results show that the dangerous coefficient of floor burst is directly proportional to the depth, the horizontal tectonic stress , the square of width of roadway and the coefficient of hard roof abutment pressure, and inversely proportional to the elastic modulus of rock and the square of the thickness of soft rock of floor when the Poisson’s ratio is invariable. Through numerical simulation, the distribution laws of horizontal stress rising and vertical stress reducing in the floor are found out. When the stress is more than the breaking point of the floor coal seam, floor burst will happen with the influence of blast firing or roof breaking quickly. According to the research, the intensity weakening theory for floor burst is established. The measure of blasting for stress-relief in the floor is applied to the haulage gateway of 25110 coal face in Yuejin Coal Mine, and has gained good effect. The study conclusions provide theoretical foundation and ways for floor burst prevention in similar conditions.

Key words: floor burst, horizontal stress, dangerous coefficient of floor burst, numerical simulation, blasting for stress-relief in floor

CLC Number: 

  • TU 451
[1] LI Fan-fan, CHEN Wei-zhong, LEI Jiang, YU Hong-dan, MA Yong-shang, . Study of mechanical properties of claystone based on plastic damage [J]. Rock and Soil Mechanics, 2020, 41(1): 132-140.
[2] XIA Kun, DONG Lin, PU Xiao-wu, LI Lu. Earthquake response characteristics of loess tableland [J]. Rock and Soil Mechanics, 2020, 41(1): 295-304.
[3] GUO Yuan-cheng, LI Ming-yu, ZHANG Yan-wei, . Incremental analytical method for prestressed anchor and soil nail wall composite support system [J]. Rock and Soil Mechanics, 2019, 40(S1): 253-258.
[4] 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.
[5] LIU Hong-yan. Influence of macroscopic and mesoscopic flaws on mechanical behavior of rock mass and slope stability [J]. Rock and Soil Mechanics, 2019, 40(S1): 431-439.
[6] JIN Ai-bing, LIU Jia-we, ZHAO Yi-qing, WANG Ben-xin, SUN Hao, WEI Yu-dong, . Mechanical characteristics analysis of granite under unloading conditions [J]. Rock and Soil Mechanics, 2019, 40(S1): 459-467.
[7] HAN Zheng, SU Bin, LI Yan-ge, WANG Wei, WANG Wei-dong, HUANG Jian-ling, CHEN Guang-qi, . Smoothed particle hydrodynamic numerical simulation of debris flow process based on Herschel-Bulkley-Papanastasiou constitutive model [J]. Rock and Soil Mechanics, 2019, 40(S1): 477-485.
[8] WU Mei-su, ZHOU Cheng, WANG Lin, TAN Chang-ming, . Numerical simulation of the influence of roots and fissures on hydraulic and mechanical characteristics of the soil [J]. Rock and Soil Mechanics, 2019, 40(S1): 519-526.
[9] WU Jin-liang, HE Ji, . Composite element model for dynamic excavation simulation of rock slope [J]. Rock and Soil Mechanics, 2019, 40(S1): 535-540.
[10] WU Feng-yuan, FAN Yun-yun, CHEN Jian-ping, LI Jun, . Simulation analysis of dynamic process of debris flow based on different entrainment models [J]. Rock and Soil Mechanics, 2019, 40(8): 3236-3246.
[11] SUN Feng, XUE Shi-feng, PANG Ming-yu, TANG Mei-rong, ZHANG Xiang, LI Chuan, . 3D simulation of fracture growth from perforation to near-wellbore in horizontal wells based on continuum damage model [J]. Rock and Soil Mechanics, 2019, 40(8): 3255-3261.
[12] MU Rui, PU Shao-yun, HUANG Zhi-hong, LI Yong-hui, ZHENG Pei-xin, LIU Yang, LIU Ze, ZHENG Hong-chao, . Determination of ultimate bearing capacity of uplift piles in combined soil and rock masses [J]. Rock and Soil Mechanics, 2019, 40(7): 2825-2837.
[13] JIN Jun-chao, SHE Cheng-xue, SHANG Peng-yang. A nonlinear creep model of rock based on the strain softening index [J]. Rock and Soil Mechanics, 2019, 40(6): 2239-2246.
[14] ZHANG Bo, LI Yao, YANG Xue-ying, ZHU Piao-yang, ZHU Chun-di, LIU Zi-hao, LIU Wen-jie, LUO Zhi-heng, . Design and application of a hydraulic pressure supply device for hydraulic fracturing experiments [J]. Rock and Soil Mechanics, 2019, 40(5): 2022-2028.
[15] ZHANG Cong, LIANG Jing-wei, YANG Jun-sheng, CAO Lei, XIE Yi-peng, ZHANG Gui-jin, . Research on the diffusion mechanism and application of pulsate grouting in embankment and dam [J]. Rock and Soil Mechanics, 2019, 40(4): 1507-1514.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LIU Xiao，TANG Hui-ming，LIU Yu. A new model for landslide displacement prediction based on set pair analysis and fuzzy-Markov chain[J]. , 2009, 30(11): 3399 -3405 .
[2] HU Da-wei, ZHOU Hui, XIE Shou-yi, ZHANG Kai, SHAO Jian-fu, FENG. Study of Biot’s coefficients of marble during plastic deformation phase[J]. , 2009, 30(12): 3727 -3732 .
[3] SHI Xu-chao，HAN Yang. Water absorption test of soft clay after rebound under unloading[J]. , 2010, 31(3): 732 -736 .
[4] ZHU Jian-ming，PENG Xin-po，YAO Yang-ping，XU Jin-hai. Application of SMP failure criterion to computing limit strength of coal pillars[J]. , 2010, 31(9): 2987 -2990 .
[5] YUAN Xi-zhong, LI Ning , ZHAO Xiu-yun, YANG Yin-tao. Analysis of sensitivity of frozen ground bearing capacity to climate change in Northeast China permafrost regions[J]. , 2010, 31(10): 3265 -3272 .
[6] BAI Bing, LI Xiao-chun, SHI Lu, TANG Li-zhong. Slope identity of elastoplastic stress-strain curve and its verification and application[J]. , 2010, 31(12): 3789 -3792 .
[7] TANG Li-min. Regularization algorithm of foundation settlement prediction model[J]. , 2010, 31(12): 3945 -3948 .
[8] LI Zhan-hai，ZHU Wan-cheng，FENG Xia-ting，LI Shao-jun，ZHOU Hui，CHEN Bing-rui. Effect of lateral pressure coefficients on damage and failure process of horseshoe-shaped tunnel[J]. , 2010, 31(S2): 434 -441 .
[9] CAI Hui-teng, WEI Fu-quan, CAI Zong-wen. Study of silty clay dynamic characteristics in Chongqing downtown area[J]. , 2009, 30(S2): 224 -228 .
[10] SONG Ling　, LIU Feng-yin　, LI Ning　. On mechanism of rotary cone penetration test[J]. , 2011, 32(S1): 787 -0792 .
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