煤炭地下气化覆岩温度场和裂隙场变化机制模拟研究

赵明东; 董东林; 田康

煤炭地下气化覆岩温度场和裂隙场变化机制模拟研究

中国矿业大学(北京)地球科学与测绘工程学院,北京100083

基金项目: 国家自然科学基金(41172213，41272275);中央高校基本科研业务费专项资金(2009QD03)

详细信息

作者简介:
赵明东(1989—),男,山东潍坊人,博士研究生,主要从事采矿及矿山岩石力学方面的研究。

中图分类号: TD325
计量
- 文章访问数: 986
- HTML全文浏览量: 54
- PDF下载量: 527
- 被引次数: 0
出版历程
- 收稿日期: 2016-04-24
- 刊出日期: 2017-02-15

Change mechanism simulation study of the overlying strata temperature field and fracture field in UCG

College of Geoscience and Surveying Engineering,China University of Mining and Technology,Beijing 100083,China

摘要

摘要: 对我国内蒙古地区某煤炭地下气化研究区的气化煤层顶底板岩石试样进行了热物理参数的测定,并建立了各岩性岩石的比热容和导热系数随温度变化的拟合曲线方程,运用COMSOL Multiphysics软件对气化煤层覆岩的温度场情况进行了模拟,根据温度场的分布情况建立了阶段式的地下气化FLAC^3D力学模型,通过调节对应温度的泥岩力学参数,实现了对顶板泥岩的温度反演,并得到了气化研究区的覆岩裂隙发育特征.将相应位置的裂隙高度实测值与模拟值进行对比,在5%的置信区间下R²值达到0.91,验证了所建立的力学模型的可靠性.
- 煤炭地下气化 /
- 温度场 /
- 裂隙场 /
- COMSOL Multiphysics /
- FLAC^3D
Abstract: The thermodynamic parameters of surrounding rock of the coal seam in a certain gasification field in Inner Mongolia are measured,and the relationships of the heat capacity and thermal conductivity of the surrounding rock of the coal seam and the temperature were established.COMSOL Multiphysics was used to simulate the temperature field of overlying strata in this study area.According to the temperature field,the FLAC^3D model was established,the temperature was applied in the overlying strata by adjusting the mechanical parameters of mudstone,and obtained the gasification strata fissures characteristics in the study area.Compared the actual value of fissure height with the value of simulation,in the 5% confidence interval,R² is 0.91,the rationality of the mechanics model was verified.
- UCG /
- temperature field /
- fracture field /
- COMSOL Multiphysics /
- FLAC^3D

HTML全文

参考文献(33)

[1]	李文军,焦子阳,刘丽丽,等.甲醇萃取对大雁褐煤孔隙结构的影响[J].煤炭转化,2009,32(4):5-7.
[2]	Li Wenjun,Jiao Ziyang,Liu Lili,et al.Effect of methanol extraction on pore character of Dayan lignite [J].Coal Conversion,2009,32(4):5-7.
[3]	梁杰,朗庆田,余力,等.缓倾斜薄煤层地下气化试验研究[J].煤炭学报,2003,28(2):126-130.
[4]	Liang Jie,Lang Qingtian,Yu Li,et al.Study on underground gasification test of gently inclined thin seam [J].Journal of China Coal Society,2003,28(2):126-130.
[5]	崔勇,梁杰,王张卿.煤炭地下气化过程数值模拟研究进展[J].煤炭科学技术,2014,42(1):112-116.
[6]	Cui Yong,Liang Jie,Wang Zhangqing.Research development of numerical simulation on underground coal gasification process [J].Coal Science and Technology,2014,42(1):112-116.
[7]	陈峰,潘霞,刘洪涛,等.O_2/CO₂煤炭地下气化模型试验[J].煤炭学报,2013,38(S2):495-500.
[8]	Chen Feng,Pan Xia,Liu Hongtao,et al.O₂/CO₂ underground coal gasification model test [J].Journal of China Coal Society,2013,38(S2):495-500.
[9]	朱铭,徐道一,孙文鹏,等.国外煤炭地下气化技术发展历史与现状[J].煤炭科学技术,2013,41(5):4-9.
[10]	Zhu Ming,Xu Daoyi,Sun Wenpeng,et al.History and present status of underground coal gasification technology in overseas countries [J].Coal Science and Technology,2013,41(5):4-9.
[11]	崔勇,梁杰,王旋.基于非稳态渗流传递的煤炭地下气化数值模拟[J].煤炭学报,2014,39(S1):231-238.
[12]	Cui Yong,Liang Jie,Wang Xuan.Numerical simulation on UCG process based on non-steady flow in porous media transport [J].Journal of China Coal Society,2014,39(S1):231-238.
[13]	王媛媛,刘洪涛,李金刚,等.煤炭地下气化“三带”痕量元素析出规律模拟试验研究[J].煤炭学报,2012,37(12):2092-2096.
[14]	Wang Yuanyuan,Liu Hongtao,Li Jingang,et al.Experimental study on leaching behavior of trace elements in the residues of “three zones”from underground coal gasification [J].Journal of China Coal Society,2012,37(12):2092-2096.
[15]	刘淑琴,陈峰,庞旭林,等.煤炭地下气化反应过程分析及稳定控制工艺[J].煤炭科学技术,2015,43(1):125-128.
[16]	Liu Shuqin,Chen Feng,Pang Xulin,et al.Analysis on reaction process of underground coal gasification and stable control technique [J].Coal Science and Technology,2015,43(1):125-128.
[17]	陆银龙,王连国,唐芙蓉,等.煤炭地下气化过程中温度-应力耦合作用下燃空区覆岩裂隙演化规律[J].煤炭学报,2012,37(8):1292-1298.
[18]	Lu Yinlong,Wang Lianguo,Tang Furong,et al.Fracture evolution of overlying strata over combustion cavity under thermal mechanical interaction during underground coal gasification [J].Journal of China Coal Society,2012,37(8):1292-1298.
[19]	梁杰,崔勇,王张卿,等.煤炭地下气化炉型及工艺[J].煤炭科学技术,2013,41(5):10-15.
[20]	Liang Jie,Cui Yong,Wang Zhangqing,et al.Gasifier type and technique of underground coal gasification [J].Coal Science and Technology,2013,41(5):10-15.
[21]	席建奋,王张卿,梁鲲,等.煤炭地下气化模型试验研究现状与发展[J].煤炭科学技术,2015,43(4):131-136.
[22]	Xi Jianfen,Wang Zhangqing,Liang Kun,et al.Research status and development trend of model experiment for underground coal gasification [J].Coal Science and Technology,2015,43(4):131-136.
[23]	席建奋,梁杰,王张卿,等.煤炭地下气化温度场动态扩展对顶板热应力场及稳定性的影响[J].煤炭学报,2015,40(8): 1949-1955.
[24]	Xi Jianfen,Liang Jie,Wang Zhangqing,et al.Effect of temperature field dynamic expansion of underground coal gasification on thermal stress field and stability of roof [J].Journal of China Coal Society,2015,40(8): 1949-1955.
[25]	刘淑琴,周蓉,潘佳,等.煤炭地下气化选址决策及地下水污染防控[J].煤炭科学技术,2013,41(5):23-27.
[26]	Liu Shuqin,Zhou Rong,Pan Jia,et al.Location selection and groundwater pollution prevention and control regarding underground coal gasification [J].Coal Science and Technology,2013,41(5):23-27.
[27]	Mackinnon R J,Carey G F.Moving‐grid finite element modelling of thermal ablation and consolidation in porous media[J].International Journal for Numerical Methods in Engineering,1993,36(5):717-744.
[28]	Yang T,Thomas L.Structural mechanics simulations associated with UCG [D].USA: The Graduate School of West Virginia University,1978.
[29]	谭启.弹性与非线性状态下层状岩石高温热应力场数值对比分析[J].矿业研究与开发,2011(3):58-61.
[30]	Tan Qi.Numerical comparison analysis of thermal stress field of stratified rock in elastic or non-linear states under high temperature [J].Mining Research and Development,2011(3):58-61.
[31]	唐芙蓉,王连国,贺岩,等.煤炭地下气化场覆岩运动规律的数值模拟研究[J].煤炭工程,2013,45(5):79-82.
[32]	Tang Furong,Wang Lianguo,He Yan,et al.Study on numerical simulation of overburden strata movement law above underground coal gasification filed [J].Coal Engineering,2013,45(5):79-82.
[33]	韦尔蒂.动量、热量和质量传递原理[M].北京:化学工业出版社,2005.

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 986
HTML全文浏览量: 54
PDF下载量: 527
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

煤炭地下气化覆岩温度场和裂隙场变化机制模拟研究

作者简介:
赵明东(1989—),男,山东潍坊人,博士研究生,主要从事采矿及矿山岩石力学方面的研究。

计量

Change mechanism simulation study of the overlying strata temperature field and fracture field in UCG

计量

目录

留言板

煤炭地下气化覆岩温度场和裂隙场变化机制模拟研究

作者简介: 赵明东(1989—),男,山东潍坊人,博士研究生,主要从事采矿及矿山岩石力学方面的研究。

计量

出版历程

Change mechanism simulation study of the overlying strata temperature field and fracture field in UCG

计量

出版历程

目录

作者简介:
赵明东(1989—),男,山东潍坊人,博士研究生,主要从事采矿及矿山岩石力学方面的研究。