基于蠕变效应的穿层钻孔封孔参数优化与试验研究

doi:10.16265/j.cnki.issn 1003-3033.2021.07.014

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (7): 97-104.doi: 10.16265/j.cnki.issn 1003-3033.2021.07.014

基于蠕变效应的穿层钻孔封孔参数优化与试验研究

张钧祥^1,2,3 讲师, 刘彦伟³ 教授, 任培良⁴ 高级工程师, 韩红凯³ 讲师, 左伟芹³ 副教授

1 中原工学院能源与环境学院,河南郑州 451191;
2 河南理工大学深井瓦斯抽采与围岩控制技术国家地方联合工程实验室,河南焦作 454003;
3 河南理工大学河南省瓦斯地质与瓦斯治理重点实验室省部共建国家重点实验室培育基地,河南焦作 454003;
4 义马煤业集团孟津煤矿有限责任公司,河南洛阳 471142

收稿日期:2021-04-06 修回日期:2021-06-11 出版日期:2021-07-28
作者简介:张钧祥 (1989—),男,河南洛阳人,博士,讲师,主要从事矿山安全与灾害防治方面的研究。E-mail: zjx@zut.edu.cn。
基金资助:
国家自然科学基金资助(51774119);深井瓦斯抽采与围岩控制技术国家地方联合工程实验室开放基金资助(SJF202002);河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地开放基金资助(WS2020A15);河南省高校重点科研项目基础专项(19zx003)。

Optimization and experimental study of sealing parameters of crossing boreholes based on creep effect

ZHANG Junxiang^1,2,3, LIU Yanwei³, REN Peiliang⁴, HAN Hongkai³, ZUO Weiqin³

1 School of Energy & Environment Engineering, Zhongyuan University of Technology, Zhengzhou Henan 451191, China;
2 State and Local Joint Engineering Laboratory for Gas Drainage & Ground Control of Deep Mines, Henan Polytechnic University, Jiaozuo Henan 454003, China;
3 State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo Henan 454003, China;
4 Yima Coal Industry Group Mengjin Coal Mine Co., Ltd., Luoyang Henan 471142, China

Received:2021-04-06 Revised:2021-06-11 Published:2021-07-28

摘要/Abstract

摘要： 为解决穿层钻孔封孔难度大、瓦斯抽采效率低的问题,视煤岩体为弹塑性介质,在考虑蠕变效应下建立巷道围岩力学模型;根据Dracy定律,推导浆液流动控制方程,以渗透率变化为桥梁,构建巷道围岩变形与浆液流动的耦合模型;利用COMSOL软件解算该理论模型。数值模拟结果表明:巷道围岩塑性软化区范围由初始时刻4.69 m不断扩大,在100天时稳定于15.19 m;浆液扩展半径随注浆压力的增加而持续增大,当注浆压力高于2.8 MPa后,浆液扩展半径变化较小,逐渐趋于稳定。试验钻孔平均瓦斯体积分数为56.49%,是传统工艺下钻孔平均瓦斯体积分数的3.46倍,在抽采后期仍能维持较高的抽采水平。

关键词: 蠕变效应, 穿层钻孔, 封孔参数, 耦合模型, 数值模拟

Abstract: In order to address problems of difficult sealing of crossing borehole and low efficiency of gas drainage, with coal rock being regarded as elastic-plastic medium, a mechanical model of roadway surrounding rock was established considering creep effect. Then, control equation of grout flow was derived according to Dracy's law, and a coupling model of surrounding rock deformation and grout flow was constructed with permeability change as a bridge. Finally, the model was resolved by using COMSOL software. The numerical simulation results show that plastic softening zone around roadway expands from 4.69 m initially to be basically stable at 15.19 m in 100 days. And grout radius expands continuously with increase of grouting pressure, and tends to be stable when the pressure is higher than 2.8 MPa. Moreover, the average gas concentration of test boreholes reaches to 56.49%, which is 3.46 times that of traditional technology and still maintains a great drainage level in later period.

Key words: creep effect, crossing borehole, sealing parameter, coupling model, numerical simulation

中图分类号:

X936

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.

ZHANG Junxiang, LIU Yanwei, REN Peiliang, HAN Hongkai, ZUO Weiqin. Optimization and experimental study of sealing parameters of crossing boreholes based on creep effect[J]. China Safety Science Journal, 2021, 31(7): 97-104.

参考文献

[1] 刘见中, 孙海涛, 雷毅, 等. 煤矿区煤层气开发利用新技术现状及发展趋势[J]. 煤炭学报, 2020, 45(1): 258-267.
LIU Jianzhong, SUN Haitao, LEI Yi, et al. Current situation and development trend of coalbed methane development and utilization technology in coal mine area[J]. Journal of China Coal Society, 2020, 45(1): 258-267.
[2] 李宏, 马金魁, 邓其根. 顶板灰岩瓦斯涌出异常分析及治理技术[J]. 中国安全科学学报, 2019, 29(8): 81-86.
LI Hong, MA Jinkui, DENG Qigen. Analysis and treatment technology of gas emission anomaly from roof limestone[J]. China Safety Science Journal, 2019, 29(8): 81-86.
[3] ZHANG Junxinag, LI Bo, ZHANG Conghui, et al. Nonlinear viscoelastic-plastic creep model based on coal multistage creep tests and experimental validation[J]. Energies, 2019, 12(18): 3 468-3 473.
[4] 祁云, 齐庆杰, 吕有厂, 等. 易自燃煤层顺层抽采钻孔封孔参数优化研究[J].中国安全科学学报, 2019, 29(3): 120-126.
QI Yun, QI Qingjie, LYU Youchang, et al. Study on optimization of borehole sealing parameters based on extraction drilling spontaneous combustion control[J]. China Safety Science Journal, 2019, 29(3): 120-126.
[5] DANESH N N, CHEN Zhongwei, AMINOSSADATI S M, et al. Impact of creep on the evolution of coal permeability and gas drainage performance[J]. Journal of Natural Gas Science and Engineering, 2016, 33: 469-482.
[6] XIA Tongqiang, ZHOU Fubao, LIU Jishan, et al. Evaluation of the pre-drained coal seam gas quality[J]. Fuel, 2014, 130: 296-305.
[7] WANG Long, WANG Zhaofeng, LIU Hai, et al. An improvement sealing method for gas pressure measurement by drilling a reducing-nipple borehole[J]. Energy Science and Engineering, 2018, 6(5): 595-606.
[8] ZHANG Kai, SUN Kai, YU Bangyong, et al. Determination of sealing depth of in-seam boreholes for seam gas drainage based on drilling process of a drifter[J]. Engineering Geology, 2016, 210: 115-123.
[9] 王振锋, 周英, 孙玉宁, 等. 新型瓦斯抽采钻孔注浆封孔方法及封堵机理[J]. 煤炭学报, 2015, 40(3): 588-595.
WANG Zhenfeng, ZHOU Ying, SUN Yuning, et al. Novel gas extraction borehole grouting sealing method and sealing mechanism[J]. Journal of China Coal Society, 2015, 40(3): 588-595.
[10] 程志恒. 底抽巷穿层钻孔封孔深度与布孔间距优化研究[J]. 煤炭科学技术, 2017, 45(2): 76-82.
CHENG Zhiheng. Study on optimization of strata passing borehole sealing depth andborehole layout space in floor gas drainage gateway[J]. Coal Science and Technology, 2017, 45(2): 76-82.
[11] 章光, 吴金刚, 杨龙杰. 非等压应力场上向长距离穿层瓦斯抽采钻孔密封长度研究[J]. 岩石力学与工程学报, 2018, 37(增1): 3 422-3 431.
ZHANG Guang, WU Jin'gang, YANG Longjie. Determination of the sealing length of upward long crossing boreholes for gas drainage under unequal stress fields[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(S1): 3 422-3 431.
[12] 周福宝, 李金海, 昃玺, 等. 煤层瓦斯抽放钻孔的二次封孔方法研究[J]. 中国矿业大学学报, 2009, 38(6): 764-768.
ZHOU Fubao, LI Jinhai, ZE Xi, et al. A study of the second hole sealing method to improve gas drainage in coal seams[J]. Journal of China University of Mining & Technology, 2009, 38(6): 764-768.
[13] ZHAI Cheng, YU Xu, NI Guanhua, et al. Microscopic properties and sealing performance of new gas drainage drilling sealing material[J]. International Journal of Mining Science and Technology, 2013, 23(4): 475-480.
[14] 胡胜勇, 刘红威. 煤层瓦斯抽采钻孔漏气机理及应用研究进展[J]. 煤矿安全, 2016, 47(5): 175-178.
HU Shengyong, LIU Hongwei. Leakage mechanism of coal seam gas drainage borehole and its application research progress[J]. Safety in Coal Mines, 2016, 47(5): 175-178.
[15] ZHANG Junxiang, LI Bo, SUN Yuning. Dynamic leakage mechanism of gas drainage borehole and engineering application [J].International Journal of Mining Science and Technology, 2018, 28: 505-512.
[16] 刘超, 赵亚婕, 杨铭扬. 注浆孔与围岩裂隙不同位置关系下岩体劈裂特征数值模拟分析[J]. 煤矿安全, 2018, 49(10): 203-206.
LIU Chao, ZHAO Yajie, YANG Mingyang. numerical simulation analysis of rock mass splitting characteristics under different locations between grouting hole and surrounding rock fractures[J]. Safety in Coal Mines, 2018, 49(10): 203-206.
[17] 张浩浩, 李胜, 范超军, 等. 煤岩渗透率各向异性模型及瓦斯抽采模拟研究[J]. 中国安全科学学报, 2018, 28(12): 109-115.
ZHANG Haohao, LI Sheng, FAN Chaojun, et al. Study on model for coal rock permeability anisotropy and simulation of gas extraction[J]. China Safety Science Journal, 2018, 28(12): 109-115.

基于蠕变效应的穿层钻孔封孔参数优化与试验研究

Optimization and experimental study of sealing parameters of crossing boreholes based on creep effect

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