考虑有效应力的煤与瓦斯突出过程分析

doi:10.16265/j.cnki.issn1003-3033.2017.09.022

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (9): 129-133.doi: 10.16265/j.cnki.issn1003-3033.2017.09.022

考虑有效应力的煤与瓦斯突出过程分析

唐巨鹏教授, 丁佳会, 路江伟, 于宁

辽宁工程技术大学力学与工程学院,辽宁阜新 123000

收稿日期:2017-06-05 修回日期:2017-08-11 出版日期:2017-09-20 发布日期:2020-11-16
作者简介:唐巨鹏 (1976—),男,辽宁锦州人,博士,教授,博士生导师,主要从事矿山灾害力学、煤与瓦斯突出相关理论及试验研究。E-mail:jupengt@126.com。
基金资助:
国家重点研发计划(2016YFC0600901);国家自然科学基金面上项目资助(51374119);辽宁省高等学校优秀人才支持计划(LR2015028);辽宁省自然科学基金资助(2014020156)。

Analysis of coal and gas outburst process considering effective stress

TANG Jupeng, DING Jiahui, LU Jiangwei, YU Ning

School of Mechanics and Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China

Received:2017-06-05 Revised:2017-08-11 Online:2017-09-20 Published:2020-11-16

摘要/Abstract

摘要： 为深入研究煤与瓦斯突出过程,通过分析揭煤工作面前方原始应力区、应力集中区及卸压区应力状态,推导出不同分区有效应力关系理论表达式;以PFC^3D与FLAC^3D程序为平台,用数值模拟方法验证揭煤工作面前方不同分区有效应力理论公式的正确性。结果表明:揭煤工作面前方不同分区有效应力理论值与模拟结果吻合较好,与至揭煤面距离成三次多项式关系;煤与瓦斯突出过程中,突出区域先急剧扩大后平稳增长,且突出区域呈“口小腔大”孔洞形态;煤岩裂隙扩展过程分为3个阶段,每阶段裂隙数量增长率均呈先增后减趋势。

关键词: 煤与瓦斯突出, 有效应力, 数值模拟, 裂隙扩展, 突出区域

Abstract: In order to further study the process of coal and gas outburst, the stress states were analyzed for the original stress region, the stress concentration region and the pressure relief region in front of the uncovering coal face. Effective stress expressions were deduced for the regions. And the effective stress expressions were verified by using the numerical simulation method of PFC^3D, FLAC^3D program. The results show that the calculation results of the effective stress are close to the theoretical results, that there is a cubic polynomial correlation between the effective stress values and distance from uncovering coal face, that the outburst region rapidly expands at first and then steadily increases in the process of coal and gas outburst, that the outburst region is a hole with a small mouth a large cavity, and that the crack propagation process of coal and rock mass are divided into three stages, and the growth rate of number of cracks increases at first and then decreases at each stage.

Key words: coal and gas outburst, effective stress, numerical simulation, crack propagation, outburst region

中图分类号:

X936

唐巨鹏, 丁佳会, 路江伟, 于宁. 考虑有效应力的煤与瓦斯突出过程分析[J]. 中国安全科学学报, 2017, 27(9): 129-133.

TANG Jupeng, DING Jiahui, LU Jiangwei, YU Ning. Analysis of coal and gas outburst process considering effective stress[J]. China Safety Science Journal, 2017, 27(9): 129-133.

参考文献

[1] 朱志洁,张宏伟,韩军,等. 基于PCA-BP神经网络的煤与瓦斯突出预测研究[J].中国安全科学学报, 2013,23(4):45-50.
ZHU Zhijie, ZHANG Hongwei, HAN Jun, et al. Prediction of coal and gas outburst based on PCA-BP neural network[J].China Safety Science Journal,2013,23(4):45-50.
[2] 于不凡,王佑安.煤矿瓦斯灾害防治及利用技术手册[M]. 北京:煤炭工业出版社, 2005:1-4.
[3] 王刚,程为民,谢军,等. 煤与瓦斯突出过程中煤体瓦斯的作用研究[J].中国安全科学学报, 2010, 20(9):116-120.
WANG Gang, CHENG Weimin, XIE Jun, et al. Study on the effect of gas in the coal and gas outburst[J]. China Safety Science Journal, 2010, 20(9):116-120.
[4] 李中锋. 煤与瓦斯突出机理及其发生条件评述[J]. 煤炭科学技术, 1997,25(11):44-47.
LI Zhongfeng. Coal and gas outburst mechanism and its occurrence condition[J]. Coal Science and Technology, 1997,25(11):44-47.
[5] 李胜,罗明坤,范超军,等. 采煤工作面煤与瓦斯突出危险性智能判识技术[J].中国安全科学学报,2016,26(10):76-81.
LI Sheng, LUO Mingkun, FAN Chaojun, et al. Research on coal and gas outburst risk intelligent recognition in mining face[J].China Safety Science Journa1, 2016,26(10):76-81.
[6] ALEKSEEV A D, NEDODAYEV N V, STARIKOV G P. Destruction of coal saturated with gas under triaxial stress field on distressing:modeling of outbursts of coal and gas [J]. Institute Problem Mekhaniki AN USSR (Preprint),1980,139:30.
[7] 孟祥跃,丁雁生,陈力,等. 煤与瓦斯突出的二维模拟实验研究[J]. 煤炭学报, 1996, 21(1): 57-61.
MENG Xiangyue, DING Yansheng, CHEN Li, et al. 2D simulation test of coal and gas outburst[J]. Journal of China Coal Society, 1996, 21(1): 57-61.
[8] 许江,刘东,尹光志,等. 非均布荷载条件下煤与瓦斯突出模拟实验[J].煤炭学报,2012,37(5):836-842.
XU Jiang, LIU Dong, YIN Guangzhi, et al. Simulation experiment of coal and gas outburst under non-uniform load[J]. Journal of China Coal Society, 2012,37(5):836-842.
[9] 谢和平,周宏伟,刘建锋,等. 不同开采条件下采动力学行为研究[J].煤炭学报, 2011,36(7): 1 067-1 074.
XIE Heping, ZHOU Hongwei, LIU Jianfeng, et al.Mining-induced mechanical behavior in coal seams under different mining layouts[J].Journal of China Coal Society,2011,36(7): 1 067-1 074.
[10] 易俊,姜永东,鲜学福. 应力场、温度场瓦斯渗流特性实验研究 [J].中国矿业, 2007,16(5):113-116.
YI Jun,JIANG Yongdong,XIAN Xuefu. An experimental research on the characters of methane seepage in stress field and temperature field[J]. China Mining Magazine 2007,16(5):113-116.
[11] 高瑞元,蒋承林,孟京京.石门揭煤过程颗粒流模拟的探讨[J].煤矿安全, 2014, 45(1):147-150.
GAO Ruiyuan, JIANG Chenglin, MENG Jingjing. Investigation of particle flow simulation during uncovering coalcross-cut[J].Safety in Coal Mines, 2014, 45(1): 147-150.
[12] 蒋承林. 煤壁突出孔洞的形成机理研究[J]. 岩石力学与工程学报, 2000,19(2):225-228.
JIANG Chenglin. Study on forming mechanism of coal outburst hole[J].Chinese Journal of Rock Mechanics and Engineering, 2000,19(2):225-228.
[13] 胡千庭.煤与瓦斯突出的力学作用机理[M].北京:科学出版社, 2013:272-278.

[1]	李刚, 刘海振, 杨庆贺, 牛伟锋. 带压开采煤层底板破坏特征与突水风险分析[J]. 中国安全科学学报, 2022, 32(5): 68-76.
[2]	郑艾辰, 向晋扬, 黄锋, 金成昊, 刘星辰. 空洞对隧道结构安全影响试验与模拟[J]. 中国安全科学学报, 2022, 32(5): 119-126.
[3]	游波, 毛聪, 施式亮, 刘何清, 鲁义, 李敏. 矿用通风服微空间环境变化特征研究[J]. 中国安全科学学报, 2022, 32(5): 185-193.
[4]	冯巩, 夏元友, 王智德, 严敏嘉. 基于位移信息融合的露天矿边坡动态预警方法[J]. 中国安全科学学报, 2022, 32(3): 116-122.
[5]	鲁义, 杨帆, 刘欢, 陈健, 王金鹏, 李文辉. 气凝胶消防救援服内衬的热阻计算^*[J]. 中国安全科学学报, 2022, 32(1): 201-207.
[6]	张钧祥, 刘彦伟, 任培良, 韩红凯, 左伟芹. 基于蠕变效应的穿层钻孔封孔参数优化与试验研究[J]. 中国安全科学学报, 2021, 31(7): 97-104.
[7]	丁厚成, 连志虚, 邓权龙, 蒋仲安, 杨利炜, 葛梦圆. 振弦栅与高压喷雾协同作用下除尘特性研究^*[J]. 中国安全科学学报, 2021, 31(6): 106-112.
[8]	荆德吉, 贾鑫, 张天, 孟祥曦, 马明星, 王志恒. 落煤过程中涡旋吹吸式除尘技术数值模拟及试验[J]. 中国安全科学学报, 2021, 31(6): 121-127.
[9]	隆能增, 袁梅, 王关亮, 王清辉, 许石青, 李鑫灵. 煤与瓦斯突出微震-瓦斯互动响应预警研究[J]. 中国安全科学学报, 2021, 31(4): 125-132.
[10]	朱豪豪, 郭海林, ZHUMAKELDI A. 外力作用下管道内表面缺陷处裂纹扩展研究[J]. 中国安全科学学报, 2021, 31(3): 66-72.
[11]	臧泽升, 李忠辉, 钮月, 刘帅杰, 宋晶晶, 张全聪. 不同瓦斯压力下煤体力学特性试验研究[J]. 中国安全科学学报, 2021, 31(3): 90-95.
[12]	姜学鹏, 陈欣格, 郭昆. 侧部点式排烟隧道火灾临界风速研究[J]. 中国安全科学学报, 2021, 31(3): 105-111.
[13]	王亮, 孙毅民, 褚鹏, 赵伟, 邹双英. 基于时空分布特征的煤层瓦斯测压准确性研究[J]. 中国安全科学学报, 2021, 31(2): 40-47.
[14]	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.
[15]	曲国娜, 李红健, 贾廷贵, 强倩, 王来贵. 煤堆自燃特征的试验研究与数值模拟^*[J]. 中国安全科学学报, 2021, 31(12): 69-77.

考虑有效应力的煤与瓦斯突出过程分析

Analysis of coal and gas outburst process considering effective stress

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