孔隙压力和温度对煤岩中氮气渗流影响的实验研究
Experimental study on effect of pore pressure and temperature on nitrogen flow in coal rock
-
摘要: 为了探讨孔隙压力和温度对氮气在煤岩中渗流特性的影响,在恒定有效应力的基础上,利用自主研发的煤岩渗透率实验装置,分别进行了不同孔隙压力和温度下的渗流实验。结果表明:在恒定有效应力下,渗透率与孔隙压力和温度均呈负幂指数关系,煤岩渗透率均随着温度或者孔隙压力的升高先快速降低后逐渐平缓,分别得到实验煤岩孔隙压力和温度对煤岩氮气渗透作用的临界值,并拟合得到渗透率与温度和孔隙压力之间的关系。Abstract: In order to investigate the influence of pore pressure and temperature on the permeability of coal rocks, based on the constant effective stress, the experiment of coal rock permeability at different pore pressures and temperatures are carried out with the self-developed coal permeability experiment device. It shows that under constant effective stress conditions, coal rock permeability has a negative power exponential relationship with pore pressure and temperature. With the increase of pore pressure or temperature, the permeability shows a similar change law, which first decreases rapidly and then tends to gently. The critical values of the test coal rock pore pressure and temperature on coal rock nitrogen permeability are obtained; and the relationship between permeability and temperature and pore pressure was obtained.
-
Keywords:
- permeability /
- nitrogen /
- effective stress /
- gas pressure /
- temperature
-
-
[1] 张丹丹.温度对原煤与型煤渗流特性的影响分析[J].煤矿安全,2018,49(4):152-155. ZHANG Dandan. Effect analysis of temperature on seepage characteristics between moulded coal and raw coal[J]. Safety in Coal Mines, 2018, 49(4): 152-155.
[2] 杨凯,林柏泉,朱传杰,等.温度和围压耦合作用下煤样渗透率变化的试验研究[J].煤炭科学技术,2017, 45(12):121-126. YANG Kai, LIN Baiquan, ZHU Chuanjie, et al. Experiment study on permeability variation of coal samples under coupling effect of temperature and confined pressure[J]. Coal Science and Technology, 2017, 45(12): 121-126.
[3] 陈术源,秦勇,申建,等.高阶煤渗透率温度应力敏感性试验研究[J].煤炭学报,2014,39(9):1845. CHEN Shuyuan, QIN Yong, SHEN Jian, et al. Temperature-stress sensitivity of high-rank coal permeability[J]. Journal of China Coal Society, 2014, 39(9): 1845.
[4] 李波波,杨康,李建华,等.力热耦合作用下煤岩吸附及渗透特性的试验研究[J].煤炭学报,2018,43(10):2857-2865. LI Bobo, YANG Kang, LI Jianhua, et al. Experimental study on the adsorption and permeability characteristics of coal under the coupling of stress and temperature[J].Journal of China Coal Society, 2018, 43(10): 28570.
[5] 徐佑林,吴旭坤.瓦斯压力对煤体吸附特性及结构影响实验研究[J].煤矿安全,2019,50(8):1-4. XU Youlin, WU Xukun. Experimental study on influence of gas pressure on adsorption characteristics and structure of coal[J]. Safety in Coal Mines, 2019, 50(8): 1-4.
[6] 袁梅,杜育芹,许石青,等.孔隙压力及温度对含瓦斯原煤渗透率影响的试验研究[J].煤矿安全,2017,48(10):1-4. YUAN Mei, DU Yuqin, XU Shiqing, et al. Experimental study on effect of pore pressure and temperature on permeability of raw coal containing gas[J]. Safety in Coal Mines, 2017, 48(10): 1-4.
[7] 许江,曹偈,李波波,等.煤岩渗透率对孔隙压力变化响应规律的试验研究[J].岩石力学与工程学报,2013, 32(2):225-230. XU Jiang, CAO Jie, LI Bobo, et al. Experimental research on response law of permeability of coal to pore pressure[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(2): 225-230.
[8] 尹光志,李小双,赵洪宝,等.瓦斯压力对突出煤瓦斯渗流影响试验研究[J].岩石力学与工程学报,2009, 28(4):687-702. YIN Guangzhi, LI Xiaoshuang, ZHAO Hongbao, et al. Experimental study of effect of gas pressure on gas seepage of outburst coal[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(4): 687-702.
[9] 李康,杨典森,陈卫忠,等.不同应力和孔隙压力作用下致密煤岩渗透率演化规律[J].太原理工大学学报,2019,50(3):265. LI Kang, YANG Diansen, CHEN Weizhong, et al. Study on permeability evolution of tight coal under different stress and pore pressure conditions[J]. Journal of Taiyuan University of Technology, 2019, 50(3): 265.
[10] 杨新乐,张永利,李成全,等.考虑温度影响下煤层气解吸渗流规律试验研究[J].岩土工程学报,2008,30(12):1811-1814. YANG Xinle, ZHANG Yongli, LI Chengquan, et al. Experimental study on desorption and seepage rules of coal-bed gas considering temperature conditions[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(12): 1811-1814.
[11] 黄旭超.含瓦斯煤热-气-应力耦合模型的应用研究[J].煤炭科学技术,2018,46(S1):146-152. HUANG Xuchao. Study and application on thermo-gas-mechanical coupling model of gas-bearing coal[J]. Coal Science and Technology, 2018, 46(S1): 146-152.
[12] 荣腾龙,周宏伟,王路军,等.三向应力条件下煤体渗透率演化模型研究[J].煤炭学报,2018,43(7):1930-1937. RONG Tenglong, ZHOU Hongwei, WANG Lujun, et al. Coal permeability model for gas movement under the three-dimensional stress[J]. Journal of China Coal Society, 2018, 43(7): 1930-1937.
[13] 魏建平,秦恒洁,王登科,等.含瓦斯煤渗透率动态演化模型[J].煤炭学报,2015,40(7):1555-1561. WEI Jianping, QIN Hengjie, WANG Dengke, et al. Dynamic permeability model for coal containing gas[J]. Journal of China Coal Society, 2015, 40(7): 1555-1561.
[14] 魏建平,李波,王凯,等.受载含瓦斯煤渗透性影响因素分析[J].采矿与安全工程学报,2014,31(2):322. WEI Jianping, LI Bo, WANG Kai, et al. Influencing factors on permeability of loaded gas-bearing coal mass[J]. Journal of Mining and Safety Engineering, 2014, 31(2): 322.
[15] 姜德义,袁曦,陈结,等.吸附气体对突出煤渗流特性的影响[J].煤炭学报,2015,40(9):2091. JIANG Deyi, YUAN Xi, CHEN Jie, et al. Effect of adsorptional gases on permeability of outburst coal[J]. Journal of China Coal Society, 2015, 40(9): 2091.
[16] 周军平,鲜学福,李晓红,等.吸附不同气体对煤岩渗透特性的影响[J].岩石力学与工程学报,2010,29(11):2256-2262. ZHOU Junping, XIAN Xuefu, LI Xiaohong, et al. Effect of different adsorptional gas on permeability of coal[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(11): 2256-2262.
[17] 韩颖,刘少飞.深部煤层渗透性能主控因素研究进展及展望[J].煤矿安全,2018,49(4):12-15. HAN Ying, LIU Shaofei. Research Progress and prospect of main controlling factors of permeability performance in deep coal seam[J]. Safety in Coal Mines, 2018, 49(4): 12-15.
[18] 东振,申瑞臣,薛华庆,等.考虑滑脱效应的低阶煤动态渗透率预测新模型[J].岩土力学,2019,40(11):4270-4278. DONG Zhen, SHEN Ruichen, XUE Huaqing, et al. A new model for predicting low-rank coal dynamic permeability considering slippage effect[J]. Rock and Soil Mechanics, 2019, 40(11): 4270-4278.
-
期刊类型引用(2)
1. 杨进，谢雄刚，丁锐，曹文梁，熊欣标. 高温场下矿井煤层钻孔瓦斯抽排效果研究. 煤矿安全. 2024(07): 9-14 . 
本站查看
2. 周银波，李晓丽，李晗晟，王佳乐，毛淑星，王世杰. 煤体吸附变形对3种气体渗透率演化的影响. 煤矿安全. 2021(11): 16-21 . 本站查看
其他类型引用(7)
计量
- 文章访问数: 51
- HTML全文浏览量: 0
- PDF下载量: 1
- 被引次数: 9
下载:
