煤层液态CO2相变致裂半径范围的影响因素研究

doi:10.16265/j.cnki.issn1003-3033.2021.04.008

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (4): 57-63.doi: 10.16265/j.cnki.issn1003-3033.2021.04.008

煤层液态CO₂相变致裂半径范围的影响因素研究

贾进章^1,2 教授, 李斌^**1,2, 王东明^1,2

1 辽宁工程技术大学安全科学与工程学院,辽宁阜新 123000;
2 辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,辽宁葫芦岛 125105

收稿日期:2021-01-20 修回日期:2021-03-16 出版日期:2021-04-28 发布日期:2021-12-20
通讯作者: **李斌(1989—),男,辽宁沈阳人,博士研究生,主要研究方向为安全评价及瓦斯灾害防治。E-mail:30727899@qq.com。
作者简介:贾进章 (1974—),男,河北石家庄人,博士,教授,主要从事矿井通风与瓦斯防治方面的研究。E-mail:jiajinzhang@163.com。
基金资助:
辽宁省自然科学基金资助(2019-MS-162); 辽宁特聘教授项目(551710007007); 辽宁省百千万人才工程项目(2019-45-15)。

Study on influencing factors of cracking radius range caused by liquid CO₂ phase transition in coal seams

JIA Jinzhang^1,2, LI Bin^1,2, WANG Dongming^1,2

1 College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;
2 Key Laboratory of Mine Power Disaster and Prevention of Ministry of Education, Liaoning Technical University, Huludao Liaoning 125105, China

Received:2021-01-20 Revised:2021-03-16 Online:2021-04-28 Published:2021-12-20

摘要/Abstract

摘要： 为提高煤层瓦斯抽采效率,减少矿井瓦斯灾害事故,掌握不同因素对液态CO₂相变致裂半径范围的影响特征,以液态CO₂气爆能量释放的三硝基甲苯(TNT)当量转化为基础,构建煤体爆破损伤演化模型;利用 LS-DYNA软件模拟煤层物性参数(煤层地应力σ、煤体抗拉强度S_t、瓦斯压力P_g)和孔径d对液态CO₂相变致裂半径L范围的影响;运用灰色关联分析理论,结合数值模拟结果分析爆破影响因素主次顺序。结果表明:液态CO₂相变致裂半径范围与瓦斯压力和钻孔孔径呈递增关系,与煤层地应力呈递减关系;地应力对致裂半径范围的影响程度最强,钻孔孔径次之,瓦斯压力影响程度相对较弱,煤体抗拉强度变化对致裂半径范围的影响甚微。

关键词: 液态CO₂相变致裂, 致裂半径范围, 影响因素, 三硝基甲苯(TNT)当量转化, 灰色关联分析

Abstract: In order to improve efficiency of gas drainage of coal seam and reduce accident of mine gas disasters, grasping characteristics of influence of different factors on cracking radius of liquid CO₂ phase change. Based on equivalent conversion of TNT released by liquid CO₂ gas explosion energy, evolution model of coal blasting damage was established. LS-DYNA software was used to simulate physical properties of coal seams(coal in-situ stress σ, coal tensile strength S_t, gas pressure P_g)and influence of pore size d on fracturing radius L of liquid CO₂ phase change. Primary and secondary order of blasting influencing factors was analyzed by using grey-relational-analysis theory. The results show that liquid CO₂ phase change fracturing radius has a positive relationship with gas pressure and borehole diameter, and has a negative relationship with coal seam in-situ stress. In-situ stress has the greatest influence on fracturing radius and borehole diameter has a strong influence on fracturing radius and gas pressure has a slight influence, change of coal tensile strength has little effect on fracturing radius range.

Key words: cracking caused by liquid CO₂ phase transformation, cracking radius range, influencing factor, trinitrotoluene (TNT) equivalent conversion, grey correlation analysis

中图分类号:

X936

贾进章, 李斌, 王东明. 煤层液态CO₂相变致裂半径范围的影响因素研究[J]. 中国安全科学学报, 2021, 31(4): 57-63.

JIA Jinzhang, LI Bin, WANG Dongming. Study on influencing factors of cracking radius range caused by liquid CO₂ phase transition in coal seams[J]. China Safety Science Journal, 2021, 31(4): 57-63.

参考文献

[1] 贾进章, 葛佳琪, 甄纹浩, 等. 水力压裂增透技术及应用研究[J]. 中国安全科学学报, 2020,30(10): 63-68.
JIA Jinzhang, GE Jiaqi, ZHEN Wenhao, et al. Research and application of anti-reflection technology of hydraulic fracturing [J]. China Safety Science Journal, 2020,30(10): 63-68.
[2] 赵丹, 李斌, 雷云, 等. 煤层复合射孔增透技术研究[J]. 中国安全科学学报, 2019,29(6): 109-115.
ZHAO Dan, LI Bin, LEI Yun, et al. Research on permeability enhancement of coal seam by compound perforation technology [J]. China Safety Science Journal, 2019,29(6): 109-115.
[3] MA Yankun, NIE Baisheng, HE Xueqiu, et al. Mechanism investigation on coal and gas outburst: an overview [J]. International Journal of Minerals Metallurgy and Materials, 2020,27(7): 872-887.
[4] 聂百胜, 杨涛, 李祥春, 等. 煤粒瓦斯解吸扩散规律实验[J]. 中国矿业大学学报, 2013,42(6): 975-981.
NIE Baisheng, YANG Tao, LI Xiangchun, et al. Research on diffusion of methane in coal particles [J]. Journal of China University of Mining Technology, 2013,42(6): 975-981.
[5] 许江, 程亮, 周斌, 等. 突出过程中煤-瓦斯两相流运移的物理模拟研究[J]. 岩石力学与工程学报, 2019,38(10): 1 945-1 953.
XU Jiang, CHENG Liang, ZHOU Bin, et al. Physical simulation of coal-gas two-phase flow migration in coal and gas outburst process [J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(10): 1 945-1 953.
[6] 董庆祥, 王兆丰, 韩亚北, 等. 液态CO₂相变致裂的TNT当量研究[J]. 中国安全科学学报, 2014,24(11): 84-88.
DONG Qingxiang,WANG Zhaofeng,HAN Yabei, et al. Research on TNT equivalent of liquid CO₂ phase-transition fracturing [J]. China Safety Science Journal, 2014, 24(11): 84-88.
[7] 雷云, 刘建军, 张哨楠. CO₂相变致裂本煤层增透技术研究[J]. 工程地质学报, 2017,25(1): 215-221.
LEI Yun, LIU Jianjun, ZHANG Shaonan. Permeability improvement technology by cracking coal seam with CO₂ phase transition [J]. Journal of Engineering Geology, 2017, 25(1): 215-221.
[8] FAR M S, WANG Yuan. Probabilistic analysis of crushed zone for rock blasting [J]. Computers and Geotechnics, 2016, 80: 290-300.
[9] ESEN S, ONEDERRA I, BILGIN H A. Modelling the size of the crushed zone around a blasthole [J]. International Journal of Rock Mechanics and Mining Sciences, 2003, 40(4): 485-495.
[10] 周西华, 门金龙, 宋东平, 等. 液态CO₂爆破煤层增透最优钻孔参数研究[J]. 岩石力学与工程学报, 2016, 35(3): 524-529.
ZHOU Xihua, MEN Jinlong, SONG Dongping, et al. Research on optimal borehole parameters of antireflection in coal seam by liquid CO₂ blasting [J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(3): 524-529.
[11] 吕鹏飞. 聚能爆破煤体增透及裂隙生成机理研究 [D]. 北京:中国矿业大学(北京), 2014.
LYU Pengfei. Research on coal body permeability increase and crack generation mechanism under cumulative blasting[D]. Beijing:China University of Mining & Technology-Beijing, 2014.
[12] 郭德勇, 赵杰超, 吕鹏飞, 等. 煤层深孔聚能爆破有效致裂范围探讨[J]. 工程科学学报, 2019, 41(5): 582-590.
GUO Deyong, ZHAO Jiechao, LYU Pengfei, et al. Effective fracture zone under deep-hole cumulative blasting in coal seam [J].Chinese Journal of Engineering, 2019, 41(5): 582-590.
[13] 周西华, 门金龙, 宋东平, 等. 煤层液态CO₂爆破增透促抽瓦斯技术研究[J]. 中国安全科学学报, 2015,25(2): 60-65.
ZHOU Xihua, MEN Jinlong, SONG Dongping, et al.Research on increasing coal seam permeability and promoting gas drainage with liquid CO₂ blasting[J]. China Safety Science Journal, 2015,25(2): 60-65.
[14] 陈俊桦, 张家生, 李新平. 考虑岩体完整程度的岩石爆破损伤模型及应用[J]. 岩土工程学报, 2016, 38(5): 857-866.
CHEN Junhua, ZHANG Jiasheng, LI Xinping. Model of rock blasting-induced damage considering integrity of rock mass and its application [J]. Chinese Journal of Geotechnical Engineering, 2016, 38(5): 857-866.
[15] 刘思峰, 党耀国, 方志耕, 等. 灰色系统理论及其应用[M]. 北京:科学出版社, 2010: 73-82.

煤层液态CO₂相变致裂半径范围的影响因素研究

Study on influencing factors of cracking radius range caused by liquid CO₂ phase transition in coal seams

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	赵楚凡, 米传民, 周志鹏, 方晶. 基于组合关联分析模型的电力人身事故关键致因链筛选[J]. 中国安全科学学报, 2022, 32(4): 99-106.
[2]	姜延航, 白刚, 周西华, 王思琪, 王连华, 范超军. 煤层注CO₂驱替CH₄影响因素试验研究[J]. 中国安全科学学报, 2022, 32(4): 113-121.
[3]	乔洁, 徐鑫, 刘传攀, 赵俊玮, 刘永涛. 驾驶人危险感知能力影响因素及干预方式综述^*[J]. 中国安全科学学报, 2022, 32(2): 34-41.
[4]	刘海娟, 陈菊, 赫子铭. 新冠疫情期间大学生心理健康状况及影响因素研究[J]. 中国安全科学学报, 2021, 31(5): 168-173.
[5]	王海洋, 赵树磊, 陈祥, 王杰, 周宴民. 我国隧道瓦斯事故统计及影响因素分析[J]. 中国安全科学学报, 2021, 31(4): 34-40.
[6]	刘林, 梅强, 常志朋. 国内70年来员工不安全行为研究:发展阶段、研究热点及趋势分析[J]. 中国安全科学学报, 2021, 31(3): 1-12.
[7]	张萌, 刘宏磊, 乔文光, 高勋. 排土场稳定性影响因素显著性研究[J]. 中国安全科学学报, 2021, 31(2): 69-75.
[8]	张磊, 彭金栓, 陈晓利. 驾驶分心行为量表设计与影响因素分析^*[J]. 中国安全科学学报, 2021, 31(11): 39-46.
[9]	陈刘瑜, 李希建, 毕娟, 华攸金, 魏泽云. 基于AHP-TOPSIS的冲击型煤与瓦斯突出倾向性预测[J]. 中国安全科学学报, 2020, 30(4): 47-52.
[10]	郑霞忠, 仝立杨, 陈国梁. 建筑业安全生产水平时空演变及影响因素分析[J]. 中国安全科学学报, 2020, 30(1): 27-34.
[11]	王志刚. 基于事故统计分析的牵引供电系统运行安全研究^*[J]. 中国安全科学学报, 2019, 29(S2): 41-46.
[12]	李程睿, 赵明, 尹盼盼, 刘美池, 马乐陶. 高速铁路客运站安全评价^*[J]. 中国安全科学学报, 2019, 29(S2): 149-153.
[13]	花玲玲, 郑伟. 基于复杂网络理论的铁路事故致因分析^*[J]. 中国安全科学学报, 2019, 29(S1): 114-119.
[14]	王世恒, 王万玉. 加强专用铁路运营安全管理研究^*[J]. 中国安全科学学报, 2019, 29(S1): 138-144.
[15]	温廷新, 李洋子. 基于预处理的AFOA-ELM冲击地压危险预测模型[J]. 中国安全科学学报, 2019, 29(8): 29-34.