Skip to main content

Advertisement

SpringerLink
Log in

Experimental investigation of mechanical properties, impact tendency, and brittleness characteristics of coal mass under different gas adsorption pressures

  • ORIGINAL ARTICLE
  • Published:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources Aims and scope Submit manuscript

Abstract

Understanding the mechanical properties of coal after gas and coal interaction can better guide the mining technology of gas-bearing coal seams and drainage technology of coalbed methane. In this study, triaxial compression tests of coal mass under different gas adsorption pressures are carried out to evaluate the mechanical properties, impact tendency, and brittleness of coal with different gas adsorption pressures. Results show that due to the adsorption of gas, the mechanical parameters, such as elastic modulus and strength of coal are significantly decreased. In addition to the effect of fluid pressure, the decrease of elastic energy absorbed by coal, the increase of ductile deformation and the change of molecular structure of coal particles caused by gas adsorption also significantly affect the mechanical properties of coal. The influence of gas adsorption pressure on energy input becomes gradually evident when the coal enters the stage of plastic deformation and yield failure. Then the deformation and stress bearing capacity of coal are affected, and the energy accumulation and dissipation process of coal are further affected. The gas adsorption pressure generally develops the energy absorption density and elastic energy density of three characteristic points (initial damage point, volume expansion point and peak stress point), but reduces the dissipation energy density of these points. Gas adsorption reduces the storage of deformation energy of coal, strengthens the energy dissipation, and develops the plastic failure characteristics of coal. It is not prone to appear sudden brittle failure in coal mass. Although high pressure reduces the risk of rock burst, it increases the risk of gas outburst. The chemical effects of pore/fracture fluid caused by the combined action of adsorbed and free gas lead to the further decline in coal brittleness, thus changing the deformation and failure mode of coal.

Article highlights

  • The elastic modulus, strength and other mechanical parameters of coal are changed due to the effect of gas.

  • High gas adsorption pressure reduces the energy input density of coal, and improves the dissipated energy density of coal.

  • The impact tendency of coal mass show a downward trend with the increase in gas adsorption pressure.

  • The interaction between gas and coal weakens the brittleness of coal.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15

Similar content being viewed by others

References

  • Aziz NI, Li MW (1999) The effect of sorbed gas on the strength of coal—an experimental study. Geotech Geol Eng 17(3–4):387–402

    Article  Google Scholar 

  • Dou LM, He XQ (2001) Prevention theory and technology of rockburst. China University of Mining and Technology Press, Xuzhou

    Google Scholar 

  • Feng T, Xie XB, Wang WX (2000) Brittleness of rocks and brittleness indexes for describing rockburst proneness. Min Metall Eng 20(4):18–19

    Google Scholar 

  • Gruszkiewicz MS, Naney MT, Blencoe JG, Cole DR, Pashin JC, Carroll RE (2009) Adsorption kinetics of CO2, CH4, and their equimolar mixture on coal from the Black Warrior Basin, West-Central Alabama. Int J Coal Geol 77(1–2):23–33

    Article  Google Scholar 

  • Hou P, Xue Y, Gao F, Dou F, Su S, Cai C, Zhu C (2022) Effect of liquid nitrogen cooling on mechanical characteristics and fracture morphology of layer coal under Brazilian splitting test. Int J Rock Mech Min Sci 151:105026

    Article  Google Scholar 

  • Jin L, Xuefu X (1993) Study of outburst-proneness of coal seam via experiments and fuzzy comprehensive judgement. J Chongqing Univ 16(6):114–119

    Google Scholar 

  • Karacan CÖ (2007) Swelling-induced volumetric strains internal to a stressed coal associated with CO2 sorption. Int J Coal Geol 72(3–4):209–220

    Article  Google Scholar 

  • Li M, Mao X, Lu A, Tao J, Zhang G, Zhang L, Li C (2014) Effect of specimen size on energy dissipation characteristics of red sandstone under high strain rate. Int J Min Sci Technol 24(2):151–156

    Article  Google Scholar 

  • Li Y, She L, Wen L, Zhang Q (2020) Sensitivity analysis of drilling parameters in rock rotary drilling process based on orthogonal test method. Eng Geol 270:105576

    Article  Google Scholar 

  • Li Y, Min K, Zhang Y, Wen L (2021a) Prediction of the failure point settlement in rockfill dams based on spatial-temporal data and multiple-monitoring-point models. Eng Struct 243:112658

    Article  Google Scholar 

  • Li Y, Dong L, Wu N, Nouri A, Liao H, Chen Q, Liu C (2021b) Influences of hydrate layered distribution patterns on triaxial shearing characteristics of hydrate-bearing sediments. Eng Geol 294:106375

    Article  Google Scholar 

  • Liu BX, Huang JL, Wang ZY, Liu L (2009) Study on damage evolution and acoustic emission character of coal-rock under uniaxial compression. Chin J Rock Mech Eng 28(S1):3234–3238

    Google Scholar 

  • Liu Q, Zhang R, Wang M, Wei S, Zhang Z, Gao M, Zhang Z (2017) Physical properties of coal from different depths. J China Coal Soc 42(8):2101–2109

    Google Scholar 

  • Liu Y, Yin G, Li M, Zhang D, Deng B, Liu C, Lu J (2019) Anisotropic mechanical properties and the permeability evolution of cubic coal under true triaxial stress paths. Rock Mech Rock Eng 52(8):2505–2521

    Article  Google Scholar 

  • Liu J, Xue Y, Zhang Q, Wang H, Wang S (2022) Coupled thermo-hydro-mechanical modelling for geothermal doublet system with 3D fractal fracture. Appl Therm Eng 200:117716

    Article  Google Scholar 

  • Ma ZY, Dang FN, Liao HJ (2014) Numerical study of the dynamic compaction of gravel soil ground using the discrete element method. Granul Matter 16(6):881–889

    Article  Google Scholar 

  • Perera MSA, Sampath KHSM (2020) Modelling of free and adsorbed CO2-induced mechanical property alterations in coal. Int J Coal Geol 217:103348

    Article  Google Scholar 

  • Ranathunga AS, Perera MSA, Ranjith PG, Bui H (2016) Super-critical CO2 saturation-induced mechanical property alterations in low rank coal: an experimental study. J Supercrit Fluids 109:134–140

    Article  Google Scholar 

  • Shi JQ, Durucan S, Shimada S (2014) How gas adsorption and swelling affects permeability of coal: a new modelling approach for analysing laboratory test data. Int J Coal Geol 128:134–142

    Article  Google Scholar 

  • Tang LZ, Pan CL, Wang W (2002) Surplus energy index for analysing rock burst proneness. J Cent South Univ Technol (china) 33(2):129–132

    Google Scholar 

  • Tao S, Chen S, Pan Z (2019) Current status, challenges, and policy suggestions for coalbed methane industry development in China: a review. Energy Sci Eng 7(4):1059–1074

    Article  Google Scholar 

  • Wasantha PLP, Ranjith PG, Shao SS (2014) Energy monitoring and analysis during deformation of bedded-sandstone: use of acoustic emission. Ultrasonics 54(1):217–226

    Article  Google Scholar 

  • Xiao X, Wang L, Xu J, Lv X, Guo P, Pan Y (2020) Damage characteristics and catastrophic failure mechanism of coal induced by gas adsorption under compression. J Rock Mech Geotech Eng 12(3):587–595

    Article  Google Scholar 

  • Xie H, Li L, Peng R, Ju Y (2009) Energy analysis and criteria for structural failure of rocks. J Rock Mech Geotech Eng 1(1):11–20

    Article  Google Scholar 

  • Xie H, Gao F, Ju Y, Xie L, Yang Y, Wang J (2015) Novel idea of the theory and application of 3D volume fracturing for stimulation of shale gas reservoirs. Chin Sci Bull 61(1):36–46

    Google Scholar 

  • Xue Y, Liu J, Ranjith PG, Liang X, Wang S (2021) Investigation of the influence of gas fracturing on fracturing characteristics of coal mass and gas extraction efficiency based on a multi-physical field model. J Pet Sci Eng 206:109018

    Article  Google Scholar 

  • Xue Y, Liu J, Ranjith PG, Zhang Z, Gao F, Wang S (2022a) Experimental investigation on the nonlinear characteristics of energy evolution and failure characteristics of coal under different gas pressures. Bull Eng Geol Environ 81(1):38

    Article  Google Scholar 

  • Xue Y, Liu J, Liang X, Wang S, Ma Z (2022b) Ecological risk assessment of soil and water loss by thermal enhanced methane recovery: numerical study using two-phase flow simulation. J Clean Prod 334:130183

    Article  Google Scholar 

  • Yang SQ, Yang J, Xu P (2020a) Analysis on pre-peak deformation and energy dissipation characteristics of sandstone under triaxial cyclic loading. Geomech Geophys Geo-Energy Geo-Resour 6(1):1–15

    Google Scholar 

  • Yang SQ, Chen M, Huang YH, Jing HW, Ranjith PG (2020b) An experimental study on fracture evolution mechanism of a non-persistent jointed rock mass with various anchorage effects by DSCM, AE and X-ray CT observations. Int J Rock Mech Min Sci 134:104469

    Article  Google Scholar 

  • Yang SQ, Yin PF, Ranjith PG (2020c) Experimental study on mechanical behavior and brittleness characteristics of Longmaxi Formation shale in Changning, Sichuan Basin, China. Rock Mech Rock Eng 53(5):2461–2483

    Article  Google Scholar 

  • Yao Q, Tang C, Xia Z, Liu X, Zhu L, Chong Z, Hui X (2020) Mechanisms of failure in coal samples from underground water reservoir. Eng Geol 267:105494

    Article  Google Scholar 

  • Yin G, Li M, Wang JG, Xu J, Li W (2015) Mechanical behavior and permeability evolution of gas infiltrated coals during protective layer mining. Int J Rock Mech Min Sci 80:292–301

    Article  Google Scholar 

  • Zhu F, Pan C, Guo R (2002) A new rock burst proneness index- effective impact energy index. Ground Pressure Strata Control 3:83–84

    Google Scholar 

  • Zhu JB, Zhou T, Liao ZY, Sun L, Li XB, Chen R (2018) Replication of internal defects and investigation of mechanical and fracture behaviour of rock using 3D printing and 3D numerical methods in combination with X-ray computerized tomography. Int J Rock Mech Min Sci 106:198–212

    Article  Google Scholar 

  • Zhu JB, Kang JQ, Elsworth D, Xie HP, Ju Y, Zhao J (2021) Controlling induced earthquake magnitude by cycled fluid injection. Geophys Res Lett 48(19):e2021GL092885

    Article  Google Scholar 

  • Zhou T, Zhu JB, Ju Y, Xie HP (2019) Volumetric fracturing behavior of 3D printed artificial rocks containing single and double 3D internal flaws under static uniaxial compression. Eng Fract Mech 205:190–204

    Article  Google Scholar 

  • Zhou T, Zhu J, Xie H (2020) Mechanical and volumetric fracturing behaviour of three-dimensional printing rock-like samples under dynamic loading. Rock Mech Rock Eng 53(6):2855–2864

    Article  Google Scholar 

  • Zhang Q, Cui YJ, Zhong LW, Zhang QL, Jiang WP, Li YH (2008) Temperature-pressure comprehensive adsorption model for coal adsorption of methane. J China Coal Soc 33(11):1272–1278

    Google Scholar 

  • Zhang ZZ, Gao F, Liu ZJ (2010) Research on rock burst proneness and its microcosmic mechanism of granite considering temperature effect. Chin J Rock Mech Eng 29(8):1591–1602

    Google Scholar 

  • Zhang Z, Zhang R, Wu S, Deng J, Zhang Z, Xie J (2019) The stress sensitivity and porosity sensitivity of coal permeability at different depths: a case study in the Pingdingshan mining area. Rock Mech Rock Eng 52(5):1539–1563

    Article  Google Scholar 

Download references

Acknowledgements

This study is sponsored by the National Natural Science Foundation of China (12002270 and 51909204), the Key Research and Development Program of Shaanxi Province, China (2022ZDLSF07-06), the Youth Talent Promotion Project of the Xi’an Association for Science and Technology (095920211334) and the China Postdoctoral Science Foundation (2020M683686XB, 2021T140553 and 2021M692600).

Author information

Authors and Affiliations

  1. State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an, 710048, China

    Yi Xue, Jia Liu & Songhe Wang

  2. Deep Earth Energy Laboratory, Department of Civil Engineering, Monash University, Melbourne, VIC, 3800, Australia

    P. G. Ranjith

  3. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, 221006, China

    Feng Gao & Zhizhen Zhang

Authors
  1. Yi Xue
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Jia Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. P. G. Ranjith
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Feng Gao
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Zhizhen Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Songhe Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Jia Liu.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Xue, Y., Liu, J., Ranjith, P.G. et al. Experimental investigation of mechanical properties, impact tendency, and brittleness characteristics of coal mass under different gas adsorption pressures. Geomech. Geophys. Geo-energ. Geo-resour. 8, 131 (2022). https://doi.org/10.1007/s40948-022-00439-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s40948-022-00439-6

Keywords

Search

Navigation