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[1]周西华,张潇文,白刚,等.考虑水渗流作用的顺层抽采模拟及参数优化研究[J].中国安全生产科学技术,2018,14(10):112-118.[doi:10.11731/j.issn.1673-193x.2018.10.018]
　ZHOU Xihua,ZHANG Xiaowen,BAI Gang,et al.Study on simulation of alongseam gas extraction considering water seepage effect and parameter optimization[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(10):112-118.[doi:10.11731/j.issn.1673-193x.2018.10.018]
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考虑水渗流作用的顺层抽采模拟及参数优化研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年10期
页码:
112-118
栏目:
职业安全卫生管理与技术
出版日期:
2018-10-31

文章信息/Info

Title:
Study on simulation of alongseam gas extraction considering water seepage effect and parameter optimization
文章编号:
1673-193X(2018)-10-0112-07
作者:
周西华1; 2; 3; 张潇文1; 2; 3; 白刚1; 2; 3; 边强4; 赵璐璐4
(1.辽宁工程技术大学 安全科学与工程学院，辽宁 阜新 123000；2.矿山热动力灾害与防治教育部重点实验室，辽宁 阜新 123000；3.辽宁工程技术大学 煤炭资源安全开采与洁净利用工程研究中心，辽宁 阜新 123000；4. 晋煤集团赵庄煤业有限责任公司，山西 长治 046605)
Author(s):
ZHOU Xihua1; 2; 3;  ZHANG Xiaowen1; 2; 3;  BAI Gang1; 2; 3;  BIAN Qiang4;  ZHAO Lulu4
(1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;2. Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Fuxin Liaoning 123000, China;3. Research Center of Coal Resources Safe Mining and Clean Utilization, Liaoning Technical University, Fuxin Liaoning 123000, China;4. Zhaozhuang Coal Limited Company, Jincheng Coal Group, Changzhi Shanxi 046605, China)
关键词:
水渗流; 流固耦合; 相对渗透率; 抽采负压; 钻孔间距
Keywords:
water seepage;  fluidsolid coupling;  relative permeability;  extraction negative pressure;  borehole spacing
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2018.10.018
文献标志码:
A
摘要:
为研究水渗流作用对顺层钻孔抽采的影响，为抽采工艺参数优化提供理论依据，建立了考虑水渗流场的气水两相流固耦合方程，并利用COMSOL Multiphysics软件对赵庄矿1309工作面顺层钻孔的抽采负压与钻孔间距进行参数优化。研究结果表明：随着抽采时间增加，煤层水压与水相相对渗透率均快速下降后趋于稳定不变，气相相对渗透率先升高后不变，煤层瓦斯压力在抽采过程中逐步降低；抽采负压改变对煤层相对渗透率几乎无影响；在相同预抽时间里，抽采影响半径与抽采负压呈指数函数关系，抽采负压由15 kPa提高到27 kPa，可降低煤层瓦斯压力，有效影响半径扩散明显，超过27 kPa变化不再明显；钻孔间距设置为4.5 m可在预抽期内满足抽采要求且节约施工成本。
Abstract:
In order to study the influence of water seepage effect on the alongseam borehole gas extraction, and provide the theoretical basis for the optimization of extraction process parameters, the gaswater twophase fluidsolid coupling equation considering the water seepage field was established, and the parameters of extraction negative pressure and borehole spacing for the alongseam borehole in 1309 working face of Zhaozhuang Mine were optimized by using the COMSOL Multiphysics software. The results showed that with the increase of extraction time, both the water pressure of coal seam and the water phase relative permeability decreased rapidly and then tended to be stable and unchanged, the gas phase relative permeability increased first and then remained unchanged, and the gas pressure of coal seam decreased gradually in the extraction process. The change of extraction negative pressure had almost no influence on the relative permeability of coal seam. In the same pre extraction time, the influence radius of extraction had a relationship of exponential function with the extraction negative pressure, when the extraction negative pressure increased from 15 kPa to 27 kPa, the gas pressure of coal seam decreased, and the effective influence radius diffused obviously, but the change was not obvious when exceeding 27 kPa. The requirements of extraction in the preextraction period could be satisfied and the construction cost could be saved when the borehole spacing was set to be 4.5 m.

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备注/Memo

备注/Memo:
收稿日期： 2018-08-06
基金项目： 国家自然科学基金项目(51274115)；辽宁省教育厅重点项目(LJCL001）
作者简介： 周西华，博士，教授，主要研究方向为矿井瓦斯灾害防治、火灾防治。
通信作者： 张潇文，硕士研究生，主要研究方向为矿井瓦斯灾害防治。
更新日期/Last Update: 2018-11-07