[1]王翠霞,李树刚.煤体孔隙结构分形特征对瓦斯解吸规律的影响研究[J].西安科技大学学报,2016,(03):308-314.[doi:10.13800/j.cnki.xakjdxxb.2016.0302]
 WANG Cui-xia,LI Shu-gang.Pore structure characteristics and its influence on gas desorption of low rank coal[J].Journal of Xi'an University of Science and Technology,2016,(03):308-314.[doi:10.13800/j.cnki.xakjdxxb.2016.0302]
点击复制

煤体孔隙结构分形特征对瓦斯解吸规律的影响研究(/HTML)
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2016年03期
页码:
308-314
栏目:
出版日期:
2016-06-30

文章信息/Info

Title:
Pore structure characteristics and its influence on gas desorption of low rank coal
文章编号:
1672-9315(2016)03-0308-07
作者:
王翠霞李树刚
西安科技大学 能源学院,陕西 西安 710054
Author(s):
WANG Cui-xiaLI Shu-gang
College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China
关键词:
煤体 孔隙结构 分形特征 瓦斯 解吸
Keywords:
coal pore structure fractal feature gas desorption
分类号:
X 936; TD 712
DOI:
10.13800/j.cnki.xakjdxxb.2016.0302
文献标志码:
A
摘要:
为研究煤体的孔隙结构分形特征对含瓦斯煤解吸规律的影响,采用压汞法测定实验煤样的孔隙结构特征,基于分形理论及实验测定结果,按照孔隙的复杂程度不同对其进行分类。采用自主研发的大煤样多气一体化实验系统对煤样进行动态恒压解吸实验,基于实验结果对煤体孔隙结构分形特征对解吸规律的影响进行了分析。研究结果表明:实验煤样的微孔、小孔的连通性比较差,是由于其孔型以封闭性及半开放形孔为主; 而对于中孔和大孔主要以开放性孔隙为主,连通性较好,有利于瓦斯的运移; 按照煤体孔隙分形结构特征可将孔隙划分为孔径大于140 nm的渗流孔和孔径小于140 nm的吸附孔; 瓦斯解吸初速度随渗流孔分形维数的增大而减小,渗流孔孔隙的分布和连通情况对瓦斯的解吸起到至关重要的作用,而吸附孔分形维数与瓦斯解吸初速度之间没有明显的相关关系。
Abstract:
In order to research the effect of fractal characteristics of the coal pore structure on coal gas desorption rules,the fractal characteristics of the experimental coal samples were measured with mercury intrusion method.Based on the fractal theory and experimental determination results,the pores were classified according to its complex degree.The dynamic constant pressure desorption experiments were done by using big coal sample gas integrated experiment system which was independently developed.Then the effect of fractal characteristics of the coal pore structure on coal gas desorption rules was analyzed based on the experimental results.The research results show that the connectivity of microporous and keyhole is poor,that is because the pass of them is given priority to closed and half open shape hole,but the mesopore and macroporous is mainly open pore with good connectivity and it's conducive to gas migration.The pores can be divided into seepage-flow pores that the pore size is above 140 nm and absorption poresthat the pore size is less than or equal to 140 nm according to the fractal characteristics of coal pore.The methane desorption initial velocity would decreases with the increase of fractal dimension of seepage-flow pores.The distribution of the seepage pore and its connected situation play an important role in gas desorption,but there is no obvious correlation between the fractal dimension of adsorption pores and the gas desorption initial velocity.

参考文献/References:

[1] Rodrigues C F,Lenos M J.The measurement of coal porosity with different gases[J].International Journal of Coal Geology,2002,48(3):245-281.
[2] 李小川.多孔介质导热过程的分形研究[D].南京:东南大学,2009. LI Xiao-chuan.Study on heat conduction in porous media by fractal graphite[D].Nanjing:Southeast University,2009.
[3] 林海飞,程 博,李树刚,等.新疆阜康矿区煤层孔隙结构特征的氮吸附实验研究[J].西安科技大学学报,2015,35(6):721-726. LIN Hai-fei,CHENG Bo,LI Shu-gang,et al.Nitrogen adsorption experimental study on pore structure characteristics of coal seams in Xinjiang Fukang mining area[J].Journal of Xi'an University of Science and Technology,2015,35(6):721-726.
[4] 王启立,胡亚非,何 敏,等.石墨多孔介质孔隙度与比表面积的分形描述[J].煤炭学报,2010,35(10):1 725-1 729. WANG Qi-li,HU Ya-fei,HE Min,et al.Fractal description of porosity and specific surface area for po-rous media of graphite[J]Journal of China Coal Society,2010,35(10):1 725-1 729.
[5] 李子文,林柏泉,郝志勇,等.煤体多孔介质孔隙度的分形特征研究[J].采矿与安全工程学报,2013,30(3):437-443. LI Zi-wen,LIN Bai-quan,HAO Zhi-yong,et al.Fractal characteristics of porosity for porous media in coal mass[J].Journal of Mining & Safety Engineering,2013,30(3):437-443.
[6] 张红日,杨思敬.煤的低温氮吸附实验研究[J].山东矿业学院学报,1993,12(3):245-249. ZHANG Hong-ri,YANG Si-jing.Research into the nitrogen adsorption tast of coal under low temperature[J].Journal of Shangdong Mining Institure,1993,12(3):245-249.
[7] 傅雪海,秦 勇,薛秀廉.分形理论在煤储层物性研究中的应用[J].煤,2000,9(4):1-3. FU Xue-hai,QIN Yong,XUE Xiu-lian.Application of fractal theory on thysical troperties in coal reservoirs[J].Coal,2000,9(4):1-3.
[8] 桑树勋,朱炎铭,张石殷.煤吸附气体的固气作用机理[J].天然气工业,2005,25(1):13-15. SANG Shu-xun,ZHU Yan-ming,ZHANG Shi-yin.Solid-gas interaction mechanism of coal adsorbed gas[J].Natural Gas Industry,2005,25(1):13-15.
[9] 孟宪明.煤孔隙结构和煤对气体吸附特性研究[D].济南:山东科技大学,2007. MENG Xian-ming.Study on the pore structure of coals and characteristics of gases adsorpttion coals[D].Jinan:Shandong University of Science & Technology,2007.
[10]杨晓娜.多相介质体系中二元混合气体吸附-解吸的实验研究[D].焦作:河南理工大学,2009. YANG Xiao-na.Study on dual gas mixture adsorption and desorption experiment in multiphase medium system[D].Jiaozuo:Henan Polytechnic University,2009.
[11]孔令荣,黄宏伟,张冬梅,等.不同固结压力下饱和软粘土孔隙分布试验研究[J].地下空间与工程学报,2007,3(6):1 036-1 040. KONG Ling-rong,HUANG Hong-wei,ZHANG Dong-mei,et al.Experiment study on relationship between pore distribution and different stress levels due to consolidation of soft clays[J].Chinese Journal of Underground Space and Engineering,2007,3(6):1 036-1 040.
[12]戚灵灵,王兆丰,杨宏民,等.基于低温氮吸附法和压汞法的煤样孔隙研究[J].煤炭科学技术,2012,40(8):36-40. QI Ling-ling,WANG Zhao-feng,YANG Hong-min,et al.Study on porosity of coal samples based on low temperature nitrogen adsorption method and mercury porosimetry[J].Coal Science and Technology,2012,40(8):36-40.
[13]王 坤.焦坪矿区瓦斯赋存特征与抽放方法研究[D].西安:西安科技大学,2009. WANG Kun.Study on occurrence characteristics of gas and drainage method in Jiaoping mining area[D].Xi'an:Xi'an University of Science & Technology,2009.
[14]孙 波,王魁军.煤的分形孔隙结构特征的研究[J].煤矿安全,1999(3):87-94. SUN Bo,WANG Kui-jun.Research into the fractal character of pore structures in coal[J].Safety in Coal Mines,1999(3):87-94.
[15]沈金松,张宸恺.应用分形理论研究鄂尔多斯ZJ油田长6段储层孔隙结构的非均质性[J].西安石油大学学报,2015,14(6):19-23. SHEN Jin-song,ZHANG Chen-kai.Research on the pore structure heterogeneity of 6 section reservoir in Erdos oil field with fractal theory[J].Journal of Xi'an Shiyou University,2015,14(6):19-23.
[16]陈振标,张超谟,张占松.利用NMRT2谱分布研究储层岩石孔隙分形结构性[J].岩性油气藏,2008(1):19-23. CHEN Zhen-biao,ZHANG Chao-mo,ZHANG Zhan-song.Research on rock pore structural fractal reservoir with NMRT2 spectral distribution[J].Lithologic Reservoirs,2008(1):19-23.
[17]杨其銮,王佑安.煤屑瓦斯扩散理论及其应用[J].煤炭学报,1986(3):87-94. YANG Qi-luan,WANG You-an.Theory of methane diffusion from coal cuttings and its application[J].Journal of China Coal Society,1986(3):87-94.
[18]王兆丰.空气、水和泥浆介质中煤的瓦斯解吸规律与应用研究[D].徐州:中国矿业大学,2001. WANG Zhao-feng.Study on the gas desorption laws of coal in the media of air,water and drilling mud and their applications[D].Xuzhou:China University of Mining and Technology,2001.

相似文献/References:

[1]邓 军,邓 寅,张玉涛,等.含水率对煤二次氧化自燃特性影响的实验研究[J].西安科技大学学报,2016,(04):451.[doi:10.13800/j.cnki.xakjdxxb.2016.0401]
 DENG Jun,DENG Yin,ZHANG Yu-tao,et al.Experimental research on coal sample secondary oxidation and spontaneous combustion properties with moisture contents[J].Journal of Xi'an University of Science and Technology,2016,(03):451.[doi:10.13800/j.cnki.xakjdxxb.2016.0401]
[2]汤小燕,张伟杰,龚爱华,等.扶余油田注水开发过程中储层孔隙结构变化特征[J].西安科技大学学报,2016,(04):507.[doi:10.13800/j.cnki.xakjdxxb.2016.0409]
 TANG Xiao-yan,ZHANG Wei-jie,GONG Ai-hua,et al.Reservoir pore structure and evolution characteristics in the process of water injection development in Fuyu Oilfield[J].Journal of Xi'an University of Science and Technology,2016,(03):507.[doi:10.13800/j.cnki.xakjdxxb.2016.0409]
[3]高 洁,孙 卫,段瑞芳.苏里格气田苏东南地区盒8段储层孔隙结构研究[J].西安科技大学学报,2017,(02):194.[doi:10.13800/j.cnki.xakjdxxb.2017.0208]
 GAO Jie,SUN Wei,DUAN Rui-fang.Reservoir pore structure in He 8 formation of the southeastern Sulige Gasfield[J].Journal of Xi'an University of Science and Technology,2017,(03):194.[doi:10.13800/j.cnki.xakjdxxb.2017.0208]
[4]曹红霞,吴海燕,尚 婷,等.延安地区马家沟组风化壳型储层孔隙结构及分类评价[J].西安科技大学学报,2018,(03):426.[doi:10.13800/j.cnki.xakjdxxb.2018.0312]
 CAO Hong-xia,WU Hai-yan,SHANG Ting,et al.Pore structure and classification evaluation of the weathered crust type reservoir of the Majiagou Formation in Yan'an Area[J].Journal of Xi'an University of Science and Technology,2018,(03):426.[doi:10.13800/j.cnki.xakjdxxb.2018.0312]
[5]郭艳琴,冯娟萍,欧阳征健,等.姚店油田北区长6油层组储层特征与分类评价[J].西安科技大学学报,2010,(02):197.
 GUO Yan-qin,FENG Juan-ping,OUYANG Zheng-jian,et al.Characteristics and assessment of Chang 6 sandstone reservoirs in Yaodian Oil Field[J].Journal of Xi'an University of Science and Technology,2010,(03):197.
[6]李志强,唐旭.水射流卸压增渗及抽采瓦斯效果的渗流力学数值解[J].西安科技大学学报,2012,(04):464.
 LI Zhi-qiang,TANG Xu.Stress relief and permeability increasing by water jet and numerical method of seepage mechanics equation for gas extraction effect[J].Journal of Xi'an University of Science and Technology,2012,(03):464.
[7]崔利凯,孙建孟,黄 宏,等.高石梯-磨溪区块碳酸盐岩储层孔隙连通性综合评价[J].西安科技大学学报,2019,(04):0.[doi:10.13800/j.cnki.xakjdxxb.2019.0411]
 CUI Li-kai,SUN Jian-meng,HUANG Hong,et al.Comprehensive evaluation of pore connectivity in carbonate reservoirs of Gaoshiti-Moxi block[J].Journal of Xi'an University of Science and Technology,2019,(03):0.[doi:10.13800/j.cnki.xakjdxxb.2019.0411]

备注/Memo

备注/Memo:
基金项目:国家自然科学基金(51404188); 中国博士后科学基金(2015M572584); 陕西省博士后科研项目(陕人社函[2015]948号); 陕西省教育厅科学研究计划专项项目(14JK1463); 西安科技大学能源学院青年教工创新项目(2014-NY-006)
通讯作者:王翠霞(1985-),女,山东淄博人,博士研究生,E-mail:anqanhaiying@126.com
更新日期/Last Update: 2016-05-15