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Dynamic Tensile Strength of Coal under Dry and Saturated Conditions

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Abstract

The tensile failure characterization of dry and saturated coals under different impact loading conditions was experimentally investigated using a Split Hopkinson pressure bar. Indirect dynamic Brazilian disc tension tests for coals were carried out. The indirect tensile strengths for different bedding angles under different impact velocities, strain rates and loading rates are analyzed and discussed. A high-speed high-resolution digital camera was employed to capture and record the dynamic failure process of coal specimens. Based on the experimental results, it was found that the saturated specimens have stronger loading rate dependence than the dry specimens. The bedding angle has a smaller effect on the dynamic indirect tensile strength compared to the impact velocity. Both shear and tensile failures were observed in the tested coal specimens. Saturated coal specimens have higher indirect tensile strength than dry ones.

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References

  • Asprone D, Cadoni E, Prota A, Manfredi G (2009) Dynamic behavior of a Mediterranean natural stone under tensile loading. Int J Rock Mech Min Sci 46:514–520

    Article  Google Scholar 

  • ASTM D5142–09 (2009) Standard test methods for proximate analysis of the analysis sample of coal and coke by instrumental procedures. ASTM International, West Conshohocken

    Google Scholar 

  • Bieniawski ZT, Hawkes I (1978) Suggested methods for determining tensile strength of rock materials. Int J Rock Mech Min Sci Geomech Abstr 15:99–103

    Article  Google Scholar 

  • Broch E (1979) Changes in rock strength by water. In: Proceedings IV international society of rock mechanics. Montreux, pp 71–75

  • Burshtein LS (1969) Effect of moisture on the strength and deformability of sandstone. J Min Sci 5:573–576

    Google Scholar 

  • Cai M, Kaiser PK, Suorineni F, Su K (2007) A study on the dynamic behavior of the Meuse/Haute-Marne argillite. Phys Chem Earth Parts A/B/C 32:907–916. doi:10.1016/j.pce.2006.03.007

    Article  Google Scholar 

  • Chen R, Xia K, Dai F, Lu F, Luo SN (2009) Determination of dynamic fracture parameters using a semi-circular bend technique in split Hopkinson pressure bar testing. Eng Fract Mech 76:1268–1276. doi:10.1016/j.engfracmech.2009.02.001

    Article  Google Scholar 

  • Cho SH, Ogata Y, Kaneko K (2003) Strain-rate dependency of the dynamic tensile strength of rock. Int J Rock Mech Min Sci 40:763–777

    Article  Google Scholar 

  • Colback PSB, Wiid BL (1965) The influence of moisture content on the compressive strength of rock. In: Proceedings of the third Canadian rock mechanics symposium, pp 65–83

  • Dai F (2010) Dynamic tensile, flexural and fracture tests of anisotropic barre granite. Dissertation, University of Toronto

  • Dai F, Xia K, Tang L (2010) Rate dependence of the flexural tensile strength of Laurentian granite. Int J Rock Mech Min Sci 47:469–475

    Article  Google Scholar 

  • Dutta PK, Kim K (1993) High-strain-rate tensile behavior of sedimentary and igneous rocks at low temperatures. U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, NH

  • Fuenkajorn K, Kenkhunthod N (2010) Influence of loading rate on deformability and compressive strength of three Thai sandstones. Geotech Geol Eng 28:707–715

    Article  Google Scholar 

  • Goldsmith W, Sackman JL, Ewerts C (1976) Static and dynamic fracture strength of Barre granite. Int J Rock Mech Min Sci Geomech Abstr 13:303–309

    Article  Google Scholar 

  • Gong F-Q, Zhao G-F (2013) Dynamic indirect tensile strength of sandstone under different loading rates. Rock Mech Rock Eng. doi:10.1007/s00603-013-0503-7

    Google Scholar 

  • Han G (2003) Rock stability under different fluid flow conditions. Dissertation, University of Waterloo

  • Hawkins AB, Mcconnell BJ (1992) Sensitivity of sandstone strength and deformability to changes in moisture-content. Q J Eng Geol 25:115–130

    Article  Google Scholar 

  • Howe S, Goldsmith W, Sackman J (1974) Macroscopic static and dynamic mechanical properties of Yule marble. Exp Mech 14:337–346

    Article  Google Scholar 

  • Huang S, Xia K, Yan F, Feng X (2010) An experimental study of the rate dependence of tensile strength softening of Longyou sandstone. Rock Mech Rock Eng 43:677–683. doi:10.1007/s00603-010-0083-8

    Article  Google Scholar 

  • ISRM, International Society for Rock Mechanics (1978) Commission on Standardization of Laboratory and Field Tests. Suggested methods for determining tensile strength of rock materials. Int J Rock Mech Min Sci Geomech Abstr 15:99–103

  • Khan AS, Irani FK (1987) An experimental study of stress wave transmission at a metallic-rock interface and dynamic tensile failure of sandstone, limestone, and granite. Mech Mater 6:285–292

    Article  Google Scholar 

  • Li Z, Reddish D (2004) The effect of groundwater recharge on broken rocks. Int J Rock Mech Min Sci 41:280–285

    Article  Google Scholar 

  • Mclamore R, Gray KE (1967) Mechanical behavior of anisotropic sedimentary rocks. J. Eng. Ind. 89:62–67

    Article  Google Scholar 

  • Ogata Y, Jung W, Kubota S, Wada Y (2004) Effect of the strain rate and water saturation for the dynamic tensile strength of rocks. Explos Shock Wave Hyperveloc Phenom Mater 465–466:361–366

    Google Scholar 

  • Ray SK, Sarkar K, Singh TN (1999) Effect of cyclic loading and strain rate on the mechanical behaviour of sandstone. Int J Rock Mech Min Sci 36:543–549

    Article  Google Scholar 

  • Rossi P (1991) A physical phenomenon which can explain the mechanical behaviour of concrete under high strain rates. Mater Struct 24:422–424

    Article  Google Scholar 

  • Scholtès L, Donze F-V, Khanal M (2011) Scale effects on strength of geomaterials, case study: coal. J Mech Phys Solids 59:1131–1146

    Article  Google Scholar 

  • Wang QZ, Li W, Xie HP (2009) Dynamic split tensile test of flattened Brazilian disc of rock with SHPB setup. Mech Mater 41:252–260

    Article  Google Scholar 

  • Xia K, Yao W (2015) Dynamic rock tests using split Hopkinson (Kolsky) bar system-A review. J Rock Mech Geotech Eng 7:27–59

    Article  Google Scholar 

  • Xia K, Huang S, Jha AK (2010) Dynamic tensile test of coal, shale and sandstone using split Hopkinson pressure bar: a tool for blast and impact assessment. Int J Geotech Earthq Eng 1:24–37. doi:10.4018/jgee.2010070103

    Article  Google Scholar 

  • Yan F, Feng XT, Chen R, Xia K, Jin C (2012) Dynamic tensile failure of the rock interface between tuff and basalt. Rock Mech Rock Eng 45:341–348

    Article  Google Scholar 

  • Zhang QB, Zhao J (2013a) A review of dynamic experimental techniques and mechanical behaviour of rock materials. Rock Mech Rock Eng. doi:10.1007/s00603-013-0463-y

    Google Scholar 

  • Zhang QB, Zhao J (2013b) Effect of loading rate on fracture toughness and failure micromechanisms in marble. Eng Fract Mech 102:288–309

    Article  Google Scholar 

  • Zhang QB, Zhao J (2013c) Determination of mechanical properties and full-field strain measurements of rock material under dynamic loads. Int J Rock Mech Min Sci 60:423–439. doi:10.1016/j.ijrmms.2013.01.005

    Google Scholar 

  • Zhao J, Li HB, Wu MB, Li TJ (1999) Dynamic uniaxial compression tests on a granite. Int J Rock Mech Min Sci 36:273–277

    Article  Google Scholar 

  • Zhou YX, Xia K, Li XB, Li HB, Ma GW, Zhao J, Zhou ZL, Dai F (2012) Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials. Int J Rock Mech Min Sci 49:105–112. doi:10.1016/j.ijrmms.2011.10.004

    Article  Google Scholar 

Download references

Acknowledgments

The research is financially supported by the Major State Basic Research Development Program Fund (Grant Nos. 2010CB226801, 2010CB226804), National Natural Science Foundation of China (Grant No. 51174213), New Century Excellent Talents in Ministry of Education Support Program of China (No. NCET-10-0775), State Key Lab of Coal Resources and Safe Mining (No. SKLCRSM13KFA01), Fundamental Research Funds for the Central Universities and Fund of China Scholarship Council. The authors especially thank the State Key Laboratory for Geomechanics and Deep Underground Engineering of CUMTB for providing the SHPB experimental facilities and Prof. Gao-feng Zhao, Prof. Dianshu Liu for their suggestions and aid in analyzing the data.

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Authors and Affiliations

  1. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, 100083, China

    Yixin Zhao, Yaodong Jiang & Yaqiong Huang

  2. College of Resources and Safety Engineering, China University of Mining and Technology, Beijing, 100083, China

    Yixin Zhao & Kai Wang

  3. Department of Energy and Mineral Engineering, G3 Center and EMS Energy Institute, Pennsylvania State University, University Park, PA, 16802, USA

    Shimin Liu

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  1. Yixin Zhao
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  2. Shimin Liu
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  5. Yaqiong Huang
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Correspondence to Yixin Zhao.

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Zhao, Y., Liu, S., Jiang, Y. et al. Dynamic Tensile Strength of Coal under Dry and Saturated Conditions. Rock Mech Rock Eng 49, 1709–1720 (2016). https://doi.org/10.1007/s00603-015-0849-0

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  • DOI: https://doi.org/10.1007/s00603-015-0849-0

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