基于物理模拟的煤与瓦斯突出主控因素及能量演化过程

唐一博; 袁亮; 薛俊华; 薛生

基于物理模拟的煤与瓦斯突出主控因素及能量演化过程

计量
- 文章访问数: 238
- HTML全文浏览量: 0
- PDF下载量: 0
出版历程
- 发布日期: 2017-11-19

Control Factors of Coal and Gas Outburst and Energy Evolution Based on Physical Simulation

摘要

摘要: 配制物理特性与原煤相似的型煤，结合自主研发的煤与瓦斯突出模拟系统，研究煤与瓦斯突出过程中的能量演化过程及突出主控因素。研究表明：突出实验存在临界压力（0.75 MPa），在瓦斯压力0.75～1.25 MPa，模拟地应力5～20 MPa的范围内，突出的煤体质量最大可达28.1%，最远达14.1 m。突出过程中，能量是不断衰减的，表现为高压腔体外端压力传感器率先感应，内侧明显滞后约0.1 s。正交实验表明，瓦斯压力是煤与瓦斯突出的主控因素，但地应力与水分含量同样发挥重要作用。水分由2%上升到7%的过程中，突出强度迅速降低，趋势呈非线性规律。
- 煤与瓦斯突出 /
- 物理模拟 /
- 主控因素 /
- 能量演化 /
- 瓦斯压力
Abstract: Briquette coal which has similar physical properties with raw coal was produced for this experiment. Energy evolution process and main factors of coal and gas outburst were researched by the self-made simulation system. The research shows that there is a critical pressure (0.75 MPa) in this outburst experiment. The weight of outburst coal reaches up to 28.1%, and the maximum distance is 14.1 m when the gas pressure and axial load is 0.75 MPa to 1.25 MPa and 5 MPa to 20 MPa, respectively. During the outburst process, the energy is constantly decay. The results show that the pressure sensors outside the high pressure cavity first responded, and the sensors at inner side delayed approximately 0.1 s. Orthogonal experiment shows that the gas pressure is the main factor controlling coal and gas outburst, but the stress and moisture content also play an important role. The outburst intensity rapid decreases with a nonlinear trend when the moisture content increases from 2% to 7%.
- coal and gas outburst /
- physical simulation /
- main factors /
- energy evolution /
- gas pressure

HTML全文

参考文献(16)

[1]	MBD Aguado, CG Nicieza.Control and prevention of gas outbursts in coal mines, Riosa Olloniego coalfield, Spain[J]. International Journal of Coal Geology, 2007, 69(4): 253-266.
[2]	Sobczyk, J.A comparison of the influence of adsorbed gases on gas stresses leading to coal and gas outburst[J]. Fuel, 2014, 115 (2): 288-294.
[3]	FH An, YP Cheng, L Wang, et al.A numerical model for outburst including the effect of adsorbed gas on coal deformation and mechanical properties[J]. Computers and Geotechnics, 2013, 54 (10): 222-231.
[4]	G Li, S Abouna.Comparing potentials for gas outburst in a Chinese anthracite and an Australian bituminous coal mine [J]. International Journal of Mining Science and Technology, 2014, 24 (3): 391-396.
[5]	SJ Peng, J Xu, HW Yang,et al.Experimental study on the influence mechanism of gas seepage on coal and gas outburst disaster[J]. Safety Science, 2012, 50(4): 816.
[6]	J Tora?觡o, S Torno, E Alvarez, et al. Application of outburst risk indices in the underground coal mines by sublevel caving[J]. International Journal of Rock Mechanics and Mining Sciences, 2012, 50 (1): 94-101.
[7]	S Choi, M Wold. A mechanistic study of coal and gas outbursts[M].Dc Rocks E U.s.symposium on Rock Mechanics, 2001: 343-350.
[8]	Tang Yibo. Methane drainage optimization by roof-borehole based on physical simulation[J]. Arabian Journal of Geosciences, 2015, 8(10): 7879-7886.
[9]	张淑同.煤与瓦斯突出模拟试验综述与展望[J].矿业安全与环保,2014,41 (1):83-86.
[10]	Xue S, Wang Y C, Xie J, et al.A coupled approach to simulate initiation of outbursts of coal and gas - Model development[J].International Journal of Coal Geology, 2011, 86(2-3): 222-230.
[11]	许江,刘东,尹光志,等.非均布荷载条件下煤与瓦斯突出模拟实验[J].煤炭学报,2012,37(5):836-842.
[12]	许江,陶云奇,尹光志,等.煤与瓦斯突出模拟试验台的改进及应用[J].岩石力学与工程学报,2009,28(9):1804-1809.
[13]	陈裕佳,蒋承林,吴爱军.揭煤突出模拟试验的相似条件研究[J].采矿与安全工程学报,2013,30(4):605-609.
[14]	李晓泉,尹光志,蔡波,等.煤与瓦斯延期突出模拟试验及机理[J].重庆大学学报,2011,34(4):13-19.
[15]	Zhou H, Yang Q, Cheng Y, et al.Methane drainage and utilization in coal mines with strong coal and gas outburst dangers: A case study in Luling mine, China[J]. Journal of Natural Gas Science and Engineering, 2014, 20 (2):357-365.
[16]	王汉鹏,张庆贺,袁亮,等.含瓦斯煤相似材料研制及其突出试验应用[J].岩土力学,2015,36(6):1676.

施引文献

资源附件(0)

计量

文章访问数: 238
HTML全文浏览量: 0
PDF下载量: 0
被引次数: 0

基于物理模拟的煤与瓦斯突出主控因素及能量演化过程

计量

出版历程

Control Factors of Coal and Gas Outburst and Energy Evolution Based on Physical Simulation

计量

出版历程

目录