Abstract
Geological sequestration of greenhouse gases has gained extensive attentions in recent years, but the degradation law of mechanical parameters and the acoustic emission (AE) characteristics of coal under triaxial loading with CO2 injection are still unclear. In this work, a self-balancing triaxial apparatus was independently developed to successfully obtain the degradation law of coal mechanical properties and AE characteristics caused by CO2 injection under triaxial loading. The test results show that: (1) the triaxial compressive strength and elastic modulus of coal samples decrease with the increase of CO2 injection pressure. The maximum decrease of triaxial compressive strength of coal sample is 21.25% (injection pressure is 1.2 MPa, confining pressure is 1.5 MPa), and that of elastic modulus is 4.44% (injection pressure is 1.2 MPa, confining pressure is 1.5 MPa). (2) The AE activities of coal samples during triaxial compression can be divided into four stages: quiet period, steady increase period, surge period and stable period. The AE activities are well coupled with the stress–strain curve and the failure of coal. These results provide a basis for CO2 geological storage, theoretical research and disaster prevention and control.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aminu MD, Nabavi SA, Rochelle CA, Manovic V (2017) A review of developments in carbon dioxide storage. Appl Energ 208:1389–1419. https://doi.org/10.1016/j.apenergy.2017.09.015
Association CNC (2009) Methods for determination of physical and mechanical properties of coal and rock Part 1: General Provisions for sampling. Standards Press of China, Beijing
Bismayer U (2017) Early warning signs for mining accidents: Detecting crackling noise. Am Mineral 102:3–4. https://doi.org/10.2138/am-2017-5969
Butt SD, Mukherjee C, Lebans G (2000) Evaluation of acoustic attenuation as an indicator of roof stability in advancing headings. Int J Rock Mech Min 37:1123–1131. https://doi.org/10.1016/S1365-1609(00)00048-4
Cuéllar-Franca RM, Azapagic A (2015) Carbon capture, storage and utilisation of technologies: A critical analysis and comparison of their life cycle environmental impacts. J Co2 Util 9:82–102. https://doi.org/10.1016/j.jcou.2014.12.001
Gutenberg B, Richter CF (1994) Frequency of earthquakes in California. B Seismol Soc Am 34:185–188. https://doi.org/10.1038/156371a0
Jessen K, Tang GQ, Kovscek AR (2008) Laboratory and simulation investigation of enhanced coalbed methane recovery by gas injection. Transport Porous Med 73:141–159. https://doi.org/10.1007/s11242-007-9165-9
Jing L (2003) A review of techniques, advances and outstanding issues in numerical modelling for rock mechanics and rock engineering. Int J Rock Mech Min 40:283. https://doi.org/10.1016/s1365-1609(03)00013-3
Li YH, Liu JP, Zhao XD, Yang YJ (2009) Study on b-value and fractal dimension of acoustic emission during rock failure process. Rock and Soil Mechanics. https://doi.org/10.1016/S1874-8651(10)60073-7
Liang YP, Li QM, Gu YL, Zou QL (2017) Mechanical and acoustic emission characteristics of rock: effect of loading and unloading confining pressure at the postpeak stage. J Nat Gas Sci Eng 44:54–64. https://doi.org/10.1016/j.jngse.2017.04.012
Majewska Z, Majewski SA, Zi Tek J (2013) Swelling and acoustic emission behaviour of unconfined and confined coal during sorption of CO2. Int J Coal Geol 116–117:17–25. https://doi.org/10.1016/j.coal.2013.06.001
Majewska Z, Mortimer Z (2006) Chaotic behaviour of acoustic emission induced in hard coal by gas sorption-desorption. Acta Geophys 54:50–59. https://doi.org/10.2478/s11600-006-0005-z
Majewska Z, Zi Tek J (2008) Acoustic emission and volumetric strain induced in coal by the displacement sorption of methane and carbone dioxide. Acta Geophys 56:372–390. https://doi.org/10.2478/s11600-008-0007-0
Meng M, Qiu ZS (2018) Experiment study of mechanical properties and microstructures of bituminous coals influenced by supercritical carbon dioxide. Fuel 219:223–238. https://doi.org/10.1016/j.fuel.2018.01.115
Pan JN, Lv MM, Hou QL, Han YZ, Wang K (2019) Coal microcrystalline structural changes related to methane adsorption/desorption. Fuel 239:13–23. https://doi.org/10.1016/j.fuel.2018.10.155
Pan ZJ, Ye JP, Zhou FB, Tan YL, Connell LD, Fan JJ (2018) CO2 storage in coal to enhance coalbed methane recovery: a review of field experiments in China. Int Geol Rev 60:754–776. https://doi.org/10.1080/00206814.2017.1373607
Perera MSA, Ranjith PG, Viete DR (2013) Effects of gaseous and super-critical carbon dioxide saturation on the mechanical properties of bituminous coal from the Southern Sydney Basin. Appl Energ 110:73–81. https://doi.org/10.1016/j.apenergy.2013.03.069
Pirzada MA, Zoorabadi M, Lamei Ramandi H, Canbulat I, Roshan H (2018) CO2 sorption induced damage in coals in unconfined and confined stress states: a micrometer to core scale investigation. Int J Coal Geol 198:167–176. https://doi.org/10.1016/j.coal.2018.09.009
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. https://doi.org/10.1016/j.supflu.2015.11.010
Ranjith PG, Jasinge D, Choi SK, Mehic M, Shannon B (2010) The effect of CO2 saturation on mechanical properties of Australian black coal using acoustic emission. Fuel Guildford 89:2110–2117. https://doi.org/10.1016/j.fuel.2010.03.025
Sampath KHSM, Perera MSA, Dong-yin L, Ranjith PG, Matthai SK (2018) Characterization of dynamic mechanical alterations of supercritical CO2-interacted coal through gamma-ray attenuation, ultrasonic and X-ray computed tomography techniques. J Petrol Sci Eng 174. https://doi.org/10.1016/j.petrol.2018.11.044
Schwander T, von Borzyskowski LS, Burgener S, Cortina NS, Erb TJ (2016) A synthetic pathway for the fixation of carbon dioxide in vitro. Science 354:900–904. https://doi.org/10.1126/science.aah5237
Wang HP, Zhang YQ, Yuan L, Yu GF, Wang W, Zuo YJ (2019) Analysis of influence law and temperature effect of initial released gas expansion energy of the coal grain. J Mining Safety Eng 36:1052–1060. https://doi.org/10.13545/j.cnki.jmse.2019.05.024
Wang K, Du F, Wang GD (2017) The influence of methane and CO2 adsorption on the functional groups of coals: insights from a fourier transform infrared investigation. J Nat Gas Sci Eng 45:358–367. https://doi.org/10.1016/j.jngse.2017.06.003
Yuan L, Zhang Y, Zhao JF, Song YC, Chi Y (2020) Molecular simulation of equal density temperature in CCS under geological sequestration conditions. Greenhouse Gases Sci Technol 10:90–102. https://doi.org/10.1002/ghg.1929
Zagorščak R, Thomas HR (2018) Effects of subcritical and supercritical CO2 sorption on deformation and failure of high-rank coals. Int J Coal Geol 199:113–123. https://doi.org/10.1016/j.coal.2018.10.002
Zeng ZW, Ma J, Liu LQ, Liu TC (1995) AE b-value dynamic features during rockmass fracturing and their significances. Seismol Geol 001:7–12. https://doi.org/10.1088/0256-307X/12/7/010
Zhang KZ, Cheng YP, Li W, Wu DM, Liu ZD (2017) Influence of supercritical CO2 on pore structure and functional groups of coal: Implications for CO2 sequestration. J Nat Gas Sci Eng 40:288–298. https://doi.org/10.1016/j.jngse.2017.02.031
Zhang LM, Ma SQ, Ren MY, Jiang SQ, Wang ZQ, Wang JL (2015) Acoustic emission frequency and b value characteristics in rock failure process under various confining pressures. Chin J Rock Mech Eng 034:2057–2063. https://doi.org/10.13722/j.cnki.jrme.2015.1044
Zhang X, Ranjith PG, Ranathunga AS, Li D (2018) Variation of mechanical properties of bituminous coal under CO2 and H2O saturation. J Nat Gas Sci Eng 61:158–168. https://doi.org/10.1016/j.jngse.2018.11.010
Funding
This research was funded by Natural Science Foundation of Shandong Province (ZR2017MEE023, 2019GSF111036), National Natural Science Foundation of China (51427804).
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Data Availability
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Consent to Participate
We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed.
Consent for Publication
We confirm that we have given due consideration to the protection of intellectual property associated with this work and that there are no impediments to publication, including the timing of publication, with respect to intellectual property.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Wang, H., Liu, Z., Wang, S. et al. Experimental Study on Mechanical Properties Degradation and Acoustic Emission Characteristics of Coal Rock Caused by CO2 Injection. Geotech Geol Eng 40, 2063–2075 (2022). https://doi.org/10.1007/s10706-021-02011-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-021-02011-7