Abstract
The pore characteristics of coal have an important influence on the dynamic disaster of coal mine. Considering the disaster caused by large deformation of coal-rock mass, the influence of pore deformation and pore distribution also needs further study simultaneously. In this paper, the pore characteristics of gas outburst coal and bursting liability coal are analyzed and compared. The pore structure, the pore volume, and the pore compressibility associated with different dynamic disasters were comprehensively analyzed. The experimental data of mercury intrusion were corrected by liquid nitrogen adsorption experiment data, and the distribution of pore volume was obtained. Moreover, the fractal dimension of partial micropore was calculated, and the pore compressibility of coal was determined according to the fractal dimension. The results show that there are great differences in the pore characteristics between outburst coal and impact proneness coal, which are also one of the factors leading to different disasters in coal mine.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bhuiyan IU, Mouzon J, Forsmo SPE, Hedlund J (2011) Quantitative image analysis of bubble cavities in iron ore green pellets. Powder Technol 214(3):306–312
Chen XD, Xu LY, Wu SX (2016) Influence of pore structure on mechanical behavior of concrete under high strain rates. J Mater Civ Eng 28(2):1–8
Fu XH, Qin Y, Zhang WH (2005) Research of coal pore fractal classification and natural classification based on the coal-bed gas migration. Chin Sci Bull 50:51–55
Fu H, Tang D, Xu T, Xu H, Tao S, Li S, Yin ZY, Chen BL, Zhang C, Wang LL (2017) Characteristics of pore structure and fractal dimension of low-rank coal: a case study of Lower Jurassic Xishanyao coal in the southern Junggar Basin, NW China. Fuel 193:254–264
Jiang YD, Zhao YX, He MC, Peng SP (2007) Investigation on mechanism of coal mine bumps based on mesoscopic experiments. Chinese J Rock Mech and Eng 26(5):901-907 (in Chinese)
Jiang YD, Pan YS, Jiang FX, Dou LM, Ju Y (2014) State of the art review on mechanism and prevention of coal bumps in China. J China Coal Soc 39(2):205–213 (in Chinese)
Kaufmann J, Loser R, Leemann A (2009) Analysis of cement-bonded materials by multi-cycle mercury intrusion and nitrogen sorption. J Colloid Interface Sci 336:730–737
Lai J, Wang G (2015) Fractal analysis of tight gas sandstones using high-pressure mercury intrusion techniques. J Nat Gas Sci Eng 24:185–196
Li YH, Lu GQ, Rudolph V (1999) Compressibility and fractal dimension of fine coal particles in relation to pore structure characterisation using mercury porosimetry. Part Part Syst Charact 16(1):25–31
Li ZW, Lin BQ, Hao ZY, Gao YB, Liu FF (2013) Fractal characteristics of porosity for porous media in coal mass. J Mining Safety Eng 30(3):437–442 (in Chinese)
Li ZT, Liu DM, Cai YD, Yao YB, Wang H (2015) Pore structure and compressibility of coal matrix with elevated temperatures by mercury intrusion porosimetry. Energy Explor Exploit 33(6):809–826
Li HT, Zhou HW, Jiang YD, Wang HW (2016) An evaluation method for the bursting characteristics of coal under the effect of loading rate. Rock Mech Rock Eng 49(8):1–11
Ma H (2014) Mercury intrusion porosimetry in concrete technology: tips in measurement, pore structure parameter acquisition and application. J Porous Mater 21(2):207–215
Mahajan OP (1984) Physical characterization of coal. Powder Technol 40(1–3):1–15
Okolo GN, Everson RC, Neomagus HWJP, Roberts MJ, Sakurovs R (2015) Comparing the porosity and surface areas of coal as measured by gas adsorption, mercury intrusion and SAXS techniques. Fuel 141(141):293–304
Qu ZH, Wang GGX, Jiang B, Rudolph V, Dou XZ, Li M (2010) Experimental study on the porous structure and compressibility of tectonized coals. Energy Fuel 24(5):2964–2973
Song XX, Tang YG, Li W, Zeng FG, Xiang JH (2014) Pore structure in tectonically deformed coals by small angle X-ray scattering. J China Coal Soc 39(4):719–724 (in Chinese)
Walker PL Jr, Mahajan OP (1993) Pore structure in coals. Energy Fuel 7(4):905–918
Wang L, Cheng LB, Cheng YP, Yin GZ, Xu C, Jin K, Yang QL (2014) Characteristics and evolutions of gas dynamic disaster under igneous intrusions and its control technologies. J Nat Gas Sci Eng 18:164–174
Wang JC, Jiang FX, Meng XJ, Wang XY, Zhu ST, Feng Y (2016) Mechanism of rock burst occurrence in specially thick coal seam with rock parting. Rock Mech Rock Eng 49(5):1953–1965
Wyrzykowski M, Kiesewetter R, Kaufmann J, Baumann R, Lura P (2014) Pore structure of mortars with cellulose ether additions – mercury intrusion porosimetry study. Cem Concr Compos 53(10):25–34
Funding
This work was supported by the State Key Research Development Program of China (2016YFC0801401), the Scientific Research Foundation of State Key Lab of Coal Mine Disaster Dynamics and Control (2011DA105287—FW201508), and the Fundamental Research Funds for the Central Universities of China (2010QL02).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhu, J., Zhang, B., Zhang, Y. et al. Coal pore characteristics in different coal mine dynamic disasters. Arab J Geosci 11, 499 (2018). https://doi.org/10.1007/s12517-018-3859-x
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s12517-018-3859-x