NUMERICAL MODELLING OF GAS PUMPING IN INNER IN-TERLOCKED TAIL ROADWAY OF COAL MINE BASED ON COUPLED FRACTURE-SEEPAGE MODEL
1
Kunming University of Science and Technology
2
Beijing Prevention and Treatment Hospital of Occupation Disease for Chemical Industry
Mining Science 2021;28:33-45
KEYWORDS
TOPICS
ABSTRACT
This paper focuses on modelling of pumping high overrun gas in an upper corner and fully mechanized caving face of a coal mine with extra-thick seam. The process of roof fracture and fall in goaf is analyzed. Then the numerical model of the immediate roof and main roof collapse in goaf is established. On the basis of the numerical model, FLUENT is employed to simulate the gas seepage process in the accumulation of the rock and coal in goaf. In addition, the influence of the inner interlocked tail roadway at different positions for the gas concentration in goaf is analyzed. To calibrate the proposed numerical model, it is implemented to a coal mine. It is concluded that numerical results are similar to those in the coal mine.
REFERENCES (17)
1.
CHEN J., He H., ZHANG Y., 2011, Dynamic and static analysis of mechanism of loosen zone in sur-rounding rock of tunnels, Chinese Journal of Geotechnical Engineering, 33 (12), 1964–1969.
2.
DING H.-c., JIANG Z.-a., HAN Y.-l., 2008, Numerical simulation and application of boreholes along coal seam for methane drainage, Journal of University of Science and Technology Beijing, 30 (11), 1205–1210.
3.
Gang, W. (2011). Strength pumping gas technology of sever outburst coal seam with low permeability [J]. Journal of Liaoning Technical University (Natural Science) 5.
4.
Hou, Z., H. Ji and X. Weng (2010). Application of synthetic gas control methods in fully mechanized face of mine tashan. Journal of Liaoning Technical University (Natural Science)(3): 6.
5.
Hu, Q., Y. Liang and J. Liu (2007). CFD simulation of goaf gas flow patterns. Journal of China Coal Society 32(7): 719-723.
6.
JIA, B.-c. and Z.-y. LIU,(2008). Gas Controlling in Upper Corner of Coal Face with U Type Ventila-tion System [J]. Coal Technology 5.
7.
Jian-zhong, L. (2004). "Optimization of top corner gas content prediction and control method [J]. Coal Science and Technology 2.
8.
Lang, Z., F. Xisheng and C. Changxuan (2013). Theory and simu⁃ lation on over limit control of gas concentration in upper corner of U type ventilation in underground mine. Coal Science and Technology 41(8): 129-132.
9.
LI, F. and Q. SHAN (2011). Research on vertical buried pipe gas drainage in roadsides govern gas in upper corner [J]. Journal of Heilongjiang Institute of Science and Technology 1.
10.
LIN, H., S. LI, L. SUO, M. HUANG and P. ZHAO (2014). Numerical simulation on reasonable posi-tion of strike high roadway with FLUENT. Journal of Liaoning Technical University (Natural Science)(2): 6.
11.
Lou, J. (2008). Research on the deformation mechanism and the location optimization of high-level entry for gas extraction. Xuzhou: China University of Mining & Technology.
12.
LUO, H., Q. JIANG and X. LI (2012). Experiments on gas control with inner interlocked tail road and long drillings along roof strike [J]. Journal of Liaoning Technical University (Natural Science) 5.
13.
Wang, G., M. Wu, R. Wang, H. Xu and X. Song (2017). Height of the mining-induced fractured zone above a coal face. Engineering Geology 216: 140-152.
14.
Wang, W., Y.-p. Cheng, H.-f. Wang, W. Li and L. Wang (2015). Coupled disaster-causing mecha-nisms of strata pressure behavior and abnormal gas emissions in underground coal extraction. Environ-mental earth sciences 74(9): 6717-6735.
15.
XU, J.-l., B.-j. YU, J.-f. LOU and D.-p. WANG (2007). Characteristics of gas emission at super-length fully-mechanized top coal caving face. Journal of China University of Mining and Technology 17(4): 447-452.
16.
YANG, S.-J., T. CHENG, Q. XU, W.-L. LV and J. HUANG (2011). Theoretical analysis and numer-ical simulation of influence of the change of negative pressure and air volume of inner interlocked tail road on coal spontaneous combustion. Journal of China Coal Society 36(2): 308-312.
17.
ZHI-YU, W. (2004). The Application of Inner Interlocked Tail Road in 2308 Comprehensively Mining Sub-level Work Face at Si He Coal Mine [J]. Journal of North China Institute of Science and Technology 4.
| eISSN: | 2353-5423 |
| ISSN: | 2300-9586 |
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