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[1]郭军杰,程晓阳.循环载荷下煤样渗透特性试验研究[J].中国安全生产科学技术,2017,13(6):92-97.[doi:10.11731/j.issn.1673-193x.2017.06.015]
　GUO Junjie,CHENG Xiaoyang.Experimental study on permeability characteristics of coal samples under cyclic loading[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(6):92-97.[doi:10.11731/j.issn.1673-193x.2017.06.015]
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循环载荷下煤样渗透特性试验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年6期
页码:
92-97
栏目:
现代职业安全卫生管理与技术
出版日期:
2017-06-30

文章信息/Info

Title:
Experimental study on permeability characteristics of coal samples under cyclic loading
文章编号:
1673-193X(2017)-06-0092-06
作者:
郭军杰1; 2; 3; 程晓阳4
1.河南工程学院 安全工程学院，河南 郑州 451191；2.深井瓦斯抽采与围岩控制技术国家地方联合工程实验室，河南理工大学，河南 焦作 454000；3.西南石油大学 地球科学与技术学院，四川 成都 610500；4.河南理工大学 能源科学与工程学院，河南 焦作 454000
Author(s):
GUO Junjie1; 2; 3;  CHENG Xiaoyang4
1. School of Safety Engineering, Henan Institute of Engineering, Zhengzhou Henan 451191, China; 2. State and Local Joint Engineering Laboratory for Gas Drainage & Ground Control of Deep Mines, Henan Polytechnic University, Jiaozuo Henan 454000, China; 3. School of Geoscience and Technology, Southwest Petroleum University, Chengdu Sichuan 610500, China; 4. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454000, China
关键词:
循环载荷; 应力水平; 渗透率; 幂函数; 指数函数
Keywords:
cyclic loading;  stress level;  permeability;  power function;  exponential function
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2017.06.015
文献标志码:
A
摘要:
以原煤煤样为研究对象，采用自主研发的三轴应力渗流实验系统，进行等幅循环加、卸载的渗透率测试，研究煤样疲劳损伤过程中渗透率对应力水平的响应特征。结果表明：上、下限应力点处渗透率随循环次数出现降低-稳定-升高3个阶段，整体呈“U”型，并且随着上限应力水平的升高，曲线有向“V”型发展的趋势。拟合结果显示：在渗透率降低阶段，渗透率与循环次数呈幂指数函数关系；在渗透率升高阶段，渗透率与循环次数呈指数函数关系，并且渗透率随循环次数的降低和升高速率与上限应力水平正相关。
Abstract:
Taking the raw coal samples as the research object, the permeability tests under the constant amplitude cycle loading and unloading were conducted by using the self-developed triaxial stress seepage experiment system, and the response characteristics of permeability to the stress level in the fatigue damage process of coal samples were studied. The results showed that the permeabilities in the upper and lower limit stress points presented three stages of decreasing, stabilizing and increasing with the increase of cycle numbers, showing a "U" type as a whole, and the curves developed to "V" type with the increase of the upper limit stress level. The fitting results showed that the relationship between the permeability and the cycle number was the power function in the stage of permeability decreasing, while it was the exponential function in the stage of permeability increasing, and the decreasing and increasing rates of permeability with the cycle number were positively correlated to the upper limit stress level.

参考文献/References:

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相似文献/References:

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备注/Memo

备注/Memo:
深井瓦斯抽采与围岩控制技术国家地方联合工程实验室开放基金项目(G201615)；国家安全生产监督管理总局项目(henan-014-2013AQ)
更新日期/Last Update: 2017-07-11